Electronic equipment, protective sleeve and audio playing system

Abstract

The invention discloses electronic equipment, a protective sleeve and an audio playing system, and relates to the technical field of electronics. The electronic equipment comprises a shell, the shell is provided with a first side and a second side which are opposite, the second side of the shell is provided with a first sound guide hole, the shell is further provided with a plurality of end faces clamped between the first side and the second side, and at least one end face is provided with a second sound guide hole; the display surface of the display module is arranged towards the first side of the shell; the first sound production module is arranged close to the first sound guide hole, and the sound output side of the first sound production module faces the second side of the shell; and the second sound production module is arranged close to the second sound guide hole, and the sound output side of the second sound production module faces the second sound guide hole.

Description

Technical Field

[0001] This application belongs to the field of electronic technology, specifically relating to an electronic device, a protective case, and an audio playback system. Background Technology

[0002] With the continuous iteration and upgrading of electronic products such as mobile phones and tablets, and the continuous improvement of user demands, the design of existing electronic products is becoming increasingly thinner and lighter. However, due to thickness limitations, the thickness of various components in electronic products also needs to be thinner and thinner. A typical example is the speaker module, which, after being designed to be thinner and lighter, will have its audio performance significantly affected, making it unable to meet users' ultimate pursuit of audio-visual experience.

[0003] In the existing technology, the speakers of electronic devices adopt a side-emitting sound scheme that minimizes the thickness of the unit. By attaching the speaker module to the inside of the mid-frame, the sound output direction of the speaker is changed through the front cavity channel formed by the speaker, foam and screen. The sound generated by the diaphragm vibration is guided to the sound outlet on the side of the mid-frame. That is, the airflow in the front cavity of the speaker is bent at 90 degrees through the front cavity channel. When the airflow is large, it is easy to generate distortion and noise, which in turn affects the low-frequency performance of the audio. Summary of the Invention

[0004] The purpose of this application is to provide an electronic device, a protective case, and an audio playback system that can solve the problem that existing electronic device speaker solutions are prone to distortion and noise, affecting low-frequency audio performance.

[0005] In a first aspect, embodiments of this application provide an electronic device, comprising:

[0006] The housing has a first side and a second side opposite to each other. A first sound guide hole is provided on the second side of the housing. The housing also has a plurality of end faces sandwiched between the first side and the second side, and at least one of the end faces is provided with a second sound guide hole.

[0007] The display module has its display surface facing the first side of the housing.

[0008] A first sound-emitting module is disposed near the first sound guide hole, with the sound-emitting side of the first sound module facing the second side of the housing;

[0009] The second sound-emitting module is positioned close to the second sound guide hole, with the sound output side of the second sound-emitting module facing the second sound guide hole.

[0010] Secondly, embodiments of this application propose a protective sleeve for a first part that is detachably connected to an electronic device as described in the first aspect. The protective sleeve further includes a second part that can be bent relative to the first part to support the first part. When the second part is in a first working state, the second part is bent to form a first cavity, and the first sound guide hole communicates with the first cavity.

[0011] Thirdly, embodiments of this application propose an audio playback system, including an electronic device as described in the first aspect and a protective case as described in the second aspect.

[0012] In embodiments of this application, the electronic device includes: a housing having a first side and a second side opposite to each other, the second side of the housing having a first sound guide hole, the housing also having a plurality of end faces sandwiched between the first side and the second side, at least one of the end faces having a second sound guide hole; a display module, the display surface of the display module being disposed facing the first side of the housing; a first sound-emitting module, disposed near the first sound guide hole, the sound-emitting side of the first sound-emitting module facing the second side of the housing; a second sound-emitting module, disposed near the second sound guide hole, the sound-emitting side of the second sound module facing the second sound guide hole. A protective sleeve includes a first portion for detachable connection with the electronic device, the protective sleeve further including a second portion that can be bent relative to the first portion to support the first portion; when the second portion is in a first working state, the second portion is bent to form a first cavity, the first sound guide hole communicating with the first cavity.

[0013] In this way, by redesigning the electronic device and its protective case, a sound-generating module is added to the back of the electronic device housing, and a sound guide hole is opened near the sound output side of the sound-generating module. Furthermore, the design allows the second part of the matching protective case to bend and form a first cavity. This enables the added sound guide hole in the second part to communicate with the first cavity in one working state, thereby guiding sound to the front of the device's back and into the first cavity, where acoustic resonance occurs, enhancing low frequencies. This solution optimizes the airflow direction, reduces the flow velocity and pressure at the front cavity's sound output hole, allowing for higher airflow and further maximizing the performance of the speaker components, thus improving the low-frequency audio performance of the electronic device.

[0014] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0015] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0016] Figure 1 This is an exploded view of an electronic device according to an embodiment of this application;

[0017] Figure 2 This is an exploded view of an electronic device and a protective sleeve in an unfolded state according to an embodiment of this application;

[0018] Figure 3 This is a detailed structural diagram of the protective sleeve for the electronic device and its support according to an embodiment of this application;

[0019] Figure 4 This is a three-dimensional cross-sectional view of the protective sleeve in the state of the electronic device and the bracket according to an embodiment of this application;

[0020] Figure 5 This is a schematic diagram of an electronic device and a protective case integrated according to an embodiment of the present application, wherein the second part of the protective case is in a second working state.

[0021] Figure 6 This is a schematic diagram of an electronic device and a protective case integrated according to an embodiment of the present application, wherein the second part of the protective case is in a third working state.

[0022] Figure 7 This is a schematic diagram of an electronic device and a protective case integrated according to an embodiment of the present application, wherein the second part of the protective case is in a first working state.

[0023] Figure 8 This is an exploded view of the protective sleeve according to an embodiment of this application;

[0024] Figure 9 This is a schematic diagram of the internal structure of the protective sleeve bracket according to an embodiment of this application;

[0025] Figure 10 This is a schematic diagram of the relative positions of the magnet and the Hall sensor in the second working state of the second part of the protective sleeve according to an embodiment of this application;

[0026] Figure 11 This is a schematic diagram showing the relative positions of the magnet and the Hall sensor in the third working state of the second part of the protective sleeve according to an embodiment of this application;

[0027] Figure 12 This is a schematic diagram showing the corresponding positions of the magnet and the Hall sensor in the first working state of the second part of the protective sleeve according to an embodiment of this application;

[0028] Figure 13 This is a flowchart of an audio playback method according to an embodiment of this application;

[0029] Figure 14 This is an example flowchart of an audio playback method according to an embodiment of this application.

[0030] Figure 15 This is a schematic diagram illustrating the triggering principle of the distance detector according to an embodiment of this application;

[0031] Figure 16 This is a comparison chart of audio performance simulation data of electronic devices according to embodiments of this application. Detailed Implementation

[0032] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0033] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and do not limit the number of objects; for example, a first object can be one or more. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0034] In the description of this application, it should be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0035] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0036] To make the implementation schemes of this application clearer, the relevant background technology involved in this application will be introduced below:

[0037] With the development of communication technology and the improvement of user demands, mobile phones and other electronic devices have increasingly become important ways for people to obtain information. Among them, tablets, based on larger screens and better audio performance than mobile phones, have significantly improved the experience of office work and entertainment, and therefore their popularity is also increasing. In order to achieve a more immersive office and entertainment experience, users are demanding larger screen sizes for electronic devices, while at the same time demanding thinner and lighter devices. To reconcile these two contradictions, the only option is to demand thinner devices.

[0038] Due to thickness limitations, the thickness of various components in electronic devices is required to be increasingly thinner, including speaker modules. The extreme pursuit of speaker module thickness has resulted in limitations on the device's audio performance, which contradicts users' pursuit of the ultimate audio-visual experience.

[0039] Traditional electronic device speakers employ a side-emitting design that minimizes the thickness of the speaker unit. By attaching the speaker module inside the mid-frame, the sound output direction of the speaker is changed through the front cavity channel formed by the speaker, foam, and screen, guiding the sound generated by the diaphragm vibration to the sound outlet on the side of the mid-frame.

[0040] In addition, most electronic devices now come with matching magnetic protective cases, which can protect the devices from damage such as drops and scratches on the screen.

[0041] However, the above-mentioned existing technologies have the following drawbacks:

[0042] 1) The airflow in the front cavity of the speaker is bent at 90 degrees through the front cavity channel. When the airflow is large, it is easy to produce distortion and noise. The airflow velocity is the main factor limiting the low frequency performance of audio, and the low frequency is one of the most important indicators in the user's audio experience. Therefore, the limitation of the maximum airflow affects the further development of the speaker unit's performance.

[0043] 2) Current protective cases have only one function: protection.

[0044] To address this, this application redesigns the structure of the electronic device and its protective case. A sound-emitting module is placed on the back of the electronic device, and corresponding holes are made on the protective case to reduce the flow pressure at the front cavity sound outlet, ensuring that the speaker components perform their full potential and improving the low-frequency audio performance of the device. When the protective case is used as a support, the space enclosed by the rolled-up protective case serves as the front cavity resonant cavity, generating resonance at low frequencies. Simultaneously, a distance detector, such as a Hall sensor, senses the posture of the protective case and performs sound effect optimization for different sound-emitting cavities, further improving audio performance.

[0045] This application mainly involves the following two improvements:

[0046] 1) The subwoofer emits sound from the front, optimizing airflow;

[0047] 2) The resonant cavity formed by the protective sleeve further improves the low-frequency performance of the equipment and enhances the user experience.

[0048] The electronic device, protective case, and audio playback method provided in this application will be described in detail below with reference to the accompanying drawings and through specific embodiments and application scenarios.

[0049] Please see Figure 1 and Figure 2 , Figure 1 and Figure 2 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. Figure 1 and Figure 2 As shown, the electronic device 100 includes:

[0050] The housing 11 has a first side 101 and a second side 102 opposite to each other. The second side 102 of the housing 11 is provided with a first sound guide hole 111. The housing 11 also has a plurality of end faces sandwiched between the first side 101 and the second side 102, and at least one of the end faces is provided with a second sound guide hole 112.

[0051] Display module 12, the display surface of display module 12 is disposed facing the first side 101 of housing 11;

[0052] The first sound-emitting module 131 is disposed near the first sound guide hole 111, and the sound-emitting side of the first sound-emitting module 13 faces the second side 102 of the housing 11.

[0053] The second sound-emitting module 132 is positioned close to the second sound guide hole 112, with the sound-emitting side of the second sound-emitting module 132 facing the second sound guide hole 112.

[0054] In this application embodiment, electronic device 100 can refer to any portable electronic device equipped with audio playback function and display screen, such as mobile phone, tablet, or PDA. In particular, given the improved design of the matching protective case, electronic device 100 can refer to tablet.

[0055] like Figure 1 and Figure 2 As shown, the electronic device 100 includes, but is not limited to, components such as housing 11, display module 12, first sound module 131, and second sound module 132. Exemplarily, it may also include other modules such as motherboard 171, sub-board 172, flexible printed circuit (FPC) 173, camera 18, spring loaded contact (POGO) module 191, antenna module 192, distance detector 14, battery 110, and screw 120.

[0056] The housing 11, also known as the middle frame, is used to support and house other components, serving to provide waterproofing, dustproofing, and support and fixation. The housing 11 has a first side 101 and a second side 102. The first side 101 can be understood as the front side of the housing 11, and the second side 102 can be understood as the back side of the housing 11.

[0057] The display module 12 is the screen of the electronic device. As a visual interaction channel for users, it can generally be a liquid crystal display module (LCM). The display surface of the display module 12 is set facing the first side 101 of the housing 11, that is, the display module 12 is located on the first side 101 of the housing 11.

[0058] The first sound-emitting module 131 can be a BOX module, such as Figure 3 and Figure 4 As shown, the module may include a speaker body 1311, a front shell 1312, a rear shell 1313, and front and rear cavities. This module can convert electrical signals into sound signals. It should be noted that the number of first sound-emitting modules 131 is not limited; there can be one or more. The first sound-emitting module 131 is placed on the back of the housing 11, that is, it can be set close to the second side of the housing 11. Specifically, the front cavity of the first sound-emitting module 131 faces directly towards the back of the housing 11, that is, the sound-emitting side of the first sound-emitting module 131 faces the second side 102 of the housing 11. The second side 102 of the housing 11 has a first sound guide hole 111 at the setting position near the first sound-emitting module 131, which allows the sound of the first sound module 131 to be emitted through the front of the first sound guide hole 111 (relative to the first sound module 131).

[0059] In this way, by diverting the flow through the front sound outlet of the first sound module 131 located on the back of the housing 11, the flow velocity pressure at the front sound outlet is reduced, allowing higher airflow to pass through, further enhancing the overall performance of the device, and improving the low-frequency performance of the electronic device 100 when playing audio.

[0060] Optionally, the first sound-emitting module 131 is positioned opposite to the first sound guide hole 111.

[0061] In some embodiments, the first sound-emitting module 131 and the first sound guide hole 111 can be arranged opposite each other, so that the sound of the first sound-emitting module 131 can be output through the first sound guide hole 111, thus ensuring the audio playback effect of the first sound-emitting module 131.

[0062] Optionally, such as Figure 1 and Figure 2 As shown, the housing 11 has a first end 1011 and a second end 1012 opposite to each other, the end face of the first end 1011 and the end face of the second end 1012 are sandwiched between the first side 101 and the second side 102; the first sound guide hole 111 is disposed near the first end 1011, and / or, the first sound-emitting module 131 is a subwoofer unit.

[0063] For example, such as Figure 2 As shown, the first end 1011 is the bottom end of the housing 11, the second end 1012 is the top end of the housing 11, the first sound guide hole 111 is located near the first end 1011, and the first sound module 131 can be a subwoofer unit to specifically improve the low-frequency audio performance of the electronic device 100.

[0064] Optionally, such as Figure 3 and Figure 4 As shown, a first foam 151 is disposed between the front shell 1311 of the first sound-generating module 131 and the shell 11, and a matching dustproof mesh is disposed on the first foam 151. Specifically, the first foam 151 is the front cavity foam of the first sound-generating module 131, sandwiched between the first sound-generating module 131 and the shell 11, and a dustproof mesh, specifically a dustproof mesh cloth, is disposed on the first foam 151. In this way, the cavity of the first sound-generating module 131 can be sealed and waterproofed and dustproofed. It should be noted that, as Figure 4 As shown, a buffer foam 152 may also be provided between the display module 12 and the first sound-emitting module 131.

[0065] In some embodiments, the first sound-emitting module 131 can be positioned on the back of the housing 11 near the first end 1011. Taking a mobile phone or tablet as an example, the first end 1011 is the end with the long side. When the protective case 200 is installed, the first end 1011 is also the side near the middle connection between the two parts of the protective case 200. In this way, when the electronic device 100 is equipped with the protective case 200, and the protective case 200 is in a support state, that is, when the second part 22 of the protective case 200 is in the first working state, the protective case 200 is rolled up on the back of the electronic device 100 to form a resonant cavity. The first sound-emitting module 131 is then surrounded within this resonant cavity, so that the sound emitted by the first sound-emitting module 131 enters the resonant cavity through the first sound guide hole 111 of the housing 11 and the fourth sound guide hole 211 on the protective case 200, and resonates within the resonant cavity, thereby improving the low-frequency performance of the electronic device 100 when playing audio.

[0066] For example, the overall posture of the electronic device 100 and the protective case 200 when they are installed as a single unit is as follows: Figure 5 As shown in the figure, the position of the sound outlet 30 formed by the overlap of the first sound guide hole 111 on the electronic device 100 and the fourth sound guide hole 211 on the first part 21 of the protective cover 200 is illustrated in the figure. The overall posture of the protective cover 200 when unfolded is as follows: Figure 6 As shown in the figure, the position of the third sound guide hole 221 on the second part 22 of the protective cover 200 is illustrated in the figure. The overall posture of the protective cover 200 when it is used as a support is as follows. Figure 7 As shown, in this posture, the second part 22 of the protective cover 200 is rolled up on the back of the electronic device 100 to form a first cavity 201. At this time, the sound outlet 30 formed by the overlap of the first sound guide hole 111, the fourth sound guide hole 211, and the third sound guide hole 221 is surrounded by the first cavity 201. The first cavity 201 serves as the sound channel of the first sound module 131. The sound emitted by the first sound module 131 enters the first cavity 201 from the sound outlet 30 and resonates within the first cavity 201, thereby improving the low-frequency performance of the electronic device 100 when playing audio.

[0067] It should be noted that in practical applications, the improvement is not limited to low-frequency performance. By designing and adjusting the dimensions of the sound-generating module, the sound guide hole, and the resonant cavity, it is also possible to improve the mid-to-high frequency performance of audio. The first cavity 201, in addition to... Figure 7 The triangular shape shown in the illustration can also be other shapes, which can be achieved by designing the winding method and posture of the second part 22 of the protective cover 200.

[0068] It should be noted that, in this embodiment of the application, the electronic device 100 may also retain a sound-emitting module that emits sound from the side of the housing 11, that is, the electronic device 100 further includes a second sound-emitting module 132, and the number of the second sound-emitting modules 132 may be one or more. In addition, the housing 11 also has a plurality of end faces sandwiched between the first side 101 and the second side 102, and at least one of the end faces is provided with a second sound guide hole 112, wherein the number of the second sound-emitting modules 132 corresponds to the number of the second sound guide holes 112, and each second sound-emitting module 132 is disposed close to the corresponding second sound guide hole 112, such that the sound-emitting side of the second sound-emitting module 132 faces the second sound guide hole 112, and the sound emitted by the second sound-emitting module 132 is led out to the outside of the device through the corresponding second sound guide hole 112.

[0069] Specifically, the second sound-emitting module 132 can also be a BOX module, which can also include a speaker body, a front shell, a rear shell, and front and rear cavities, etc., capable of converting electrical signals into sound signals. It should be noted that the number of second sound-emitting modules 132 is not limited; there can be one or more. For example, such as... Figure 1 and Figure 2 As shown, there are four second sound-emitting modules 132. The second sound-emitting modules 132 are disposed on the end side of the housing 11. When there are multiple modules, they are distributed around the periphery of the housing 11. In specific applications, at least one second sound-emitting module 132 can be placed at the edge of the housing 11, consistent with conventional solutions. Sound emitted by the second sound-emitting module 132 is guided to the side of the housing 11 through a sound-guiding hole on the end face of the housing 11.

[0070] In other words, in some embodiments, the number of the first sound-emitting module 131 and the second sound-emitting module 132 can be a total of 5, or 6, or other numbers. Optionally, Figure 1 and Figure 2 The following example uses only five components. In this way, by combining the first sound module 131 and the second sound module 132, the stereo playback effect of the electronic device 100 can be better guaranteed.

[0071] In some embodiments, the second sound module 132 may be arranged opposite to the second sound guide hole 112, so that the sound of the second sound module 132 can be output through the opposite second sound guide hole 112, thus ensuring the audio playback effect of the second sound module 132.

[0072] In some embodiments, the first sound-emitting module 131 can be arranged opposite to the first sound guide hole 111, and the second sound-emitting module 132 can be arranged opposite to the second sound guide hole 112, so that the sound of the first sound-emitting module 131 can be output through the first sound guide hole 111, and the sound of the second sound-emitting module 132 can be output through the second sound guide hole 112, thus ensuring the audio playback effect of the first sound-emitting module 131 and the second sound-emitting module 132.

[0073] It should be noted that each second sound-emitting module 132 can also be fitted with sealing foam and dustproof mesh between itself and the housing 11 to achieve cavity sealing and waterproof and dustproof functions.

[0074] The motherboard 171 is the electrical functional carrier of the entire electronic device, realizing the electrical connection of the whole machine. Processors, controllers and other chips can be installed on it.

[0075] Sub-board 172 is used to implement Universal Serial Bus (USB) and connection functions for headphones or other peripherals, and is connected to motherboard 171 via FPC173.

[0076] The camera 18 is a photoelectric conversion device that can convert light signals into electrical signals and send them to the motherboard 171.

[0077] The POGO module 191 is used to connect the entire electronic device 100 to peripherals. Optionally, an antenna module or the like can also be integrated on it.

[0078] Antenna module 192 is the radio frequency part, which enables electronic device 100 to communicate with the outside world.

[0079] Battery 110 provides power to all electronic devices.

[0080] Optionally, the electronic device 100 also includes a connection component 16 for detachable connection with an external device.

[0081] The connecting component 16 can be a magnetic component, such as a magnet, or other connecting structural components. The external device can refer to a protective case, accessory cover, or other peripheral device. For example, the connecting component 16 is a magnet, and the external device is a protective case 200 that matches the electronic device 100. That is, the housing 11 can also be equipped with a magnet to achieve the adsorption effect of the protective case 200 that matches the electronic device 100.

[0082] Optionally, such as Figure 1 and Figure 2As shown, the housing 11 has a first end 1011 and a second end 1012 opposite to each other. The end face of the first end 1011 and the end face of the second end 1012 are sandwiched between the first side 101 and the second side 102. The first sound guide hole 111 is disposed close to the first end 1011.

[0083] In the case where the connecting assembly 16 includes a first magnetic element 16, the first magnetic element 16 is disposed near the first end 1011 of the housing 11;

[0084] When the connecting assembly 16 includes two first magnetic elements 16, one first magnetic element 16 is disposed near the first end 1011 of the housing 11, and the other first magnetic element 16 is disposed near the second end 1012 of the housing 11; or

[0085] In the case where the connecting component 16 includes N first magnetic elements 16, where N is a positive integer greater than 2, at least N / 2 first magnetic elements 16 are disposed near the first end 1011 of the housing 11.

[0086] For example, such as Figure 2 As shown, the first end 1011 is the bottom end of the housing 11, the second end 1012 is the top end of the housing 11, and the first sound guide hole 111 is located near the first end 1011.

[0087] The connecting component 16 may specifically be a first magnetic element 16, such as a magnet, and there may be one or more of them. When the connecting component 16 includes only one first magnetic element 16, the first magnetic element 16 may be positioned close to the first end 1011 of the housing 11 to facilitate a relatively stable magnetic connection between the electronic device and the protective cover 200. When the connecting component 16 includes two first magnetic elements 16, the two first magnetic elements 16 may be positioned close to the first end 1011 and the second end 1012 of the housing 11, respectively, that is, one of the first magnetic elements 16 is close to the first end 1011 of the housing 11. In this configuration, another first magnetic element 16 is positioned near the second end 1012 of the housing 11 to ensure a more secure magnetic connection between the electronic device and the protective sleeve 200. When the connecting assembly 16 includes two or more first magnetic elements 16, more than half of the first magnetic elements 16 can be positioned near the first end 1011 of the housing 11, and the other first magnetic elements 16 can be positioned near the second end 1012 of the housing 11. This ensures that the first magnetic elements 16 are evenly distributed around the periphery of the housing 11, which is beneficial for achieving a more stable and reliable magnetic connection between the electronic device and the protective sleeve 200.

[0088] For example, such as Figure 3 As shown, the connecting assembly 16 includes four first magnetic elements 16, which are evenly distributed at different positions on the first end 1011 and the second end 1012 of the housing 11.

[0089] The distance detector 14, also known as a distance sensor, can be implemented using a Hall sensor. It can detect the proximity of the magnet on the protective cover 200. When the magnetic induction intensity exceeds the threshold, an interrupt signal is triggered and sent to the processor of the electronic device 100. The processor then performs the corresponding operation. It should be noted that the number and placement of the distance detectors 14 can be set according to the actual application requirements. For example, there can be 2, 3, or other numbers.

[0090] Specifically, in some embodiments, optionally, such as Figure 1 and Figure 2 As shown, the housing 11 has a first end 1011 and a second end 1012 opposite to each other. The end face of the first end 1011 and the end face of the second end 1012 are sandwiched between the first side 101 and the second side 102. The first sound guide hole 111 is disposed near the first end 1011. The electronic device 100 also includes a first distance detector 141, which is disposed near the first end 1011.

[0091] In other embodiments, optionally, such as Figure 1 and Figure 2 As shown, the electronic device 100 also includes a second distance detector 142, which is disposed near the second end 1012.

[0092] The first distance detector 141 and / or the second distance detector 142 are used to detect the usage status of the protective cover 200 installed on the electronic device 100.

[0093] Specifically, the first distance detector 141 and the second distance detector 142 can be sensors used to detect the proximity distance between the protective case 200 and a specific location on the electronic device 100. In practical applications, a Hall sensor can be selected, which works in conjunction with a magnet on the protective case 200 to achieve proximity distance detection, thereby detecting the real-time attitude of the protective case 200, i.e., its usage state, such as closed state, unfolded state, or stand state. Of course, in addition to the Hall sensor detection method, infrared proximity, ultrasonic, gold finger, and Near Field Communication (NFC) detection methods can also be used.

[0094] like Figure 1 , Figure 2 , Figures 10 to 12As shown, the first distance detector 141 can be set at the first end 1011 of the housing 11, that is, at the same end as the first sound-emitting module 131. The first distance detector 141 can be used to detect whether the second part 22 of the protective cover 200 is close to the first end 1011 of the electronic device 100. Specifically, it can detect the first working state of the second part 22 of the protective cover 200. The number of the first distance detectors 141 can be set according to actual needs. For example, it can be 1, 2 or other numbers.

[0095] Optionally, there are two first distance detectors 141, which are respectively disposed at a first position and a second position at the first end 1011 of the housing 11, and the first position and the second position can be adjacent to each other. That is, in some embodiments, there can be two first distance detectors 141, such as one Hall sensor being disposed at each of two close positions at the first end 1011 of the electronic device housing 11, in order to improve detection reliability and detection accuracy.

[0096] like Figure 1 , Figure 2 , Figures 10 to 12 As shown, the second distance detector 142 can be disposed at the second end 1012 of the housing 11, that is, on the opposite side of the first distance detector 141. Taking a mobile phone or tablet as an example, the first end 1011 and the second end 1012 are the two long sides, respectively. Specifically, the second end 1012 can be the long side on the right side of the back. When the protective case 200 is installed, the second end 1012 is also the side closer to the opening of the protective case 200. The second distance detector 142 is used to detect whether the second part 22 of the protective case 200 is close to the second end 1012 of the electronic device 100. Specifically, it can detect the second working state of the second part 22 of the protective case 200. The number of second distance detectors 142 can be set according to actual needs. For example, it can be one, two, or other numbers.

[0097] In addition, by combining the first distance detector 141 and the second distance detector 142, the third working state of the second part 22 of the protective cover 200 can be detected, which corresponds to the protective cover 200 being in an unfolded state. For example, if neither the first distance detector 141 nor the second distance detector 142 detects that the second part 22 of the protective cover 200 is close to the first end 1011 or the second end 1012, it is determined that the protective cover 200 is in a flat unfolded state, but is not rolled up to the back of the electronic device 100 as a support.

[0098] It should be noted that the first working state is when the second part 22 is rolled up to the back of the electronic device 100 to serve as a support; the second working state is when the second part 22 is unfolded and folded relative to the first part 21 to cover the display module 12 of the electronic device; and the third working state is when the second part 22 is unfolded and unfolded relative to the first part 21 to expose the display module 12 of the electronic device. In other words, in the first working state, the protective cover 200 is in a support state; in the second working state, the protective cover 200 is in a closed state; and in the third working state, the protective cover 200 is in a flat, unfolded state.

[0099] For example, the protective case 200 is in such Figure 7 In the first usage state shown, the second part 22 is in the first working state. At this time, the second part 22 is wound up and fitted relative to the first part 21, so that the protective sleeve 200 is in the support state; the protective sleeve 200 is in such a state as Figure 5 In the second usage state shown, the second part 22 is in the second working state. At this time, the second part 22 is unfolded, and the first part 21 and the second part 22 are stacked, so that the protective cover 200 is closed to protect the electronic device display module 12; the protective cover 200 is in such a state as Figure 6 In the third usage state shown, the second part 22 is in the third working state. At this time, the second part 22 is unfolded, and the first part 21 and the second part 22 are side by side, so that the protective cover 200 is laid out flat.

[0100] In summary, this application embodiment adds a first sound-emitting module 131, such as a subwoofer unit, to the back of the electronic device based on the existing speaker front cavity channel of the electronic device. By designing the second part 22 of the protective sleeve 200, a first cavity 201 can be formed by winding around the back of the electronic device. The sound emitted by the first sound-emitting module 131 is guided to the first cavity 201 through the first sound guide hole 111, and acoustic resonance is generated in the first cavity 201 to achieve the effect of low frequency enhancement.

[0101] An electronic device 100 according to an embodiment of this application includes: a housing having a first side and a second side facing each other, the second side of the housing having a first sound guide hole, the housing also having a plurality of end faces sandwiched between the first side and the second side, at least one of the end faces having a second sound guide hole; a display module having a display surface facing the first side of the housing; a first sound-emitting module being disposed near the first sound guide hole, the sound-emitting side of the first sound-emitting module facing the second side of the housing; and a second sound-emitting module being disposed near the second sound guide hole, the sound-emitting side of the second sound module facing the second sound guide hole. Thus, by redesigning the structure of the electronic device and the protective case, a sound-emitting module is added to the back side of the electronic device housing, and a sound guide hole is opened near the sound-emitting side of the sound-emitting module. Furthermore, by designing the second part of the matching protective case to bend and form a first cavity, the added sound guide hole in the second part can communicate with the first cavity in one working state, thereby enabling sound to be guided to the front of the back of the device and to the first cavity, where acoustic resonance is generated, achieving low-frequency enhancement. This design optimizes the airflow direction and reduces the flow velocity and pressure at the front cavity outlet, allowing for higher airflow and further enhancing the overall performance of the speaker components, thereby improving the low-frequency audio performance of electronic devices.

[0102] Please see Figure 8 and Figure 9 , Figure 8 and Figure 9 This is a schematic diagram of the structure of a protective sleeve provided in an embodiment of this application. The protective sleeve is adapted to the electronic device 100 described in the foregoing embodiment. Figure 8 and Figure 9 As shown, the protective cover 200 includes a first portion 21 for detachable connection with the electronic device described in the foregoing embodiment, and also includes a second portion 22 that can be bent relative to the first portion 21 to support the first portion 21;

[0103] When the second part 22 is in the first working state, the second part 22 is bent to form the first cavity 201, and the first sound guide hole 111 is connected to the first cavity 201.

[0104] In this embodiment of the application, the protective case 200 is a product designed to be used in conjunction with the electronic device 100, such as... Figure 8 As shown, the protective sleeve 200 structure consists of an upper shell 210, a bracket 220, and a lower shell 230, from top to bottom.

[0105] Among them, the upper shell 210 and the lower shell 230 are the outer skin of the protective cover 200, which serves to improve visual appeal and aesthetics.

[0106] The bracket 220 is the middle layer of the protective sleeve 200, which provides support for the overall shape.

[0107] like Figure 9 As shown, the protective case 200 can be divided into two parts: a first part 21 and a second part 22. The first part 21 and the second part 22 can be bent relative to each other. When the first part 21 and the second part 22 are bent relative to each other, the protective case 200 is in a closed state. When the first part 21 and the second part 22 are laid flat and unfolded, the protective case 200 is in an unfolded state. When the electronic device 100 and the protective case 200 are installed as a single unit, the first part 21 serves as a lower cover fixedly installed on the back of the electronic device 100, and the second part 22 serves as an upper cover covering the display module 12 of the electronic device 100, forming... Figure 5 The structural form shown.

[0108] Specifically, the second part 22 has at least a first working state, and when in the first working state, the second part 22 is bent to form a first cavity 201, and the first sound guide hole 111 is connected to the first cavity 201. That is, after the first sound-emitting module 131 emits sound through the first sound guide hole 111, it directly enters the first cavity 201, generating low-frequency resonance in the first cavity 201, thereby improving the low-frequency playback performance of the electronic device 100. It can be seen that the first working state is a curled state, which can be specifically understood as the form in which the second part 22 is used as a support.

[0109] For example, such as Figure 3 , Figure 4 and Figure 7 As shown, in the first working state of the second part 22, the second part 22 can be rolled up to form a curled shape. Specifically, this can be achieved by setting a three-section foldable structure, or other curled shapes. In the curled shape, the second part 22 can form a first cavity 201, which can be used as a low-frequency resonant cavity of the first sound module 131 of the electronic device 100 in the support posture to improve the low-frequency performance of audio.

[0110] Optionally, when the second part 22 is in the second working state, the second part 22 is flattened and bent relative to the first part 21 to cover the display module 12.

[0111] In some embodiments, the second part 22 also has a second working state, in which the second part 22 is flattened and bent relative to the first part 21, and the second part 22 covers the display module 12. That is to say, the second working state is the state in which the second part 22 is unfolded and folded relative to the first part 21, and the protective cover 200 is in a closed state.

[0112] Optionally, such as Figure 9As shown, the second part 22 is provided with a third sound guide hole 221. When the second part 22 is in the first working state, the first sound guide hole 111 and the third sound guide hole 221 are connected so that the first sound guide hole 111 is connected to the first cavity 201.

[0113] In some embodiments, in order to ensure the audio playback effect when the protective cover 200 is used as a support, a third sound guide hole 221 can be provided at the corresponding position of the second part 22 to match the position of the first sound guide hole 111 provided on the housing 11. This ensures that when the second part 22 is wound around the back of the first part 21 and fits against it, the third sound guide hole 221 and the first sound guide hole 111 can basically overlap and communicate, thereby ensuring that the first sound guide hole 111 can communicate with the first cavity 201.

[0114] Optionally, the first part 21 is provided with a fourth sound guide hole 211. When the first part 21 is detachably connected to the electronic device, the first sound guide hole 111 communicates with the fourth sound guide hole 211.

[0115] In some embodiments, in accordance with the location of the first sound guide hole 111 on the electronic device 100, a fourth sound guide hole 211 can be opened at the corresponding position of the first part 21 of the protective cover 200, so that when the protective cover 200 and the electronic device 100 are installed as one unit, the fourth sound guide hole 211 coincides with the first sound guide hole 111, forming... Figure 5 The sound outlet 30 is shown in the figure. In this way, it can be ensured that even when the electronic device 100 is equipped with a protective cover 200, the first sound module 131 located on the back of the housing 11 can still achieve front sound output, ensuring that the first sound module 131 performs its full function, thereby ensuring the low-frequency performance of the electronic device 100 when playing audio.

[0116] It should be noted that, corresponding to the first sound guide hole 111 on the electronic device 100 being located at the first end 1011 of the housing 11, the fourth sound guide hole 211 can be located on the side of the first part 21 corresponding to the first end 1011, that is, on the side of the first part 21 closer to the second part 22, that is, the fourth sound guide hole 211 is located near the connection position between the first part 21 and the second part 22. The specific location can be as follows: Figure 8 As shown.

[0117] To achieve the magnetic installation function or posture detection of the protective case 200, a sensing element such as a magnet can be provided on the bracket 220 of the protective case 200. In some embodiments, optionally, the housing 11 of the electronic device has a first end 1011 and a second end 1012, with the end face of the first end 1011 and the end face of the second end 1012 sandwiched between the first side 101 and the second side 102, and the first sound guide hole 111 is disposed near the first end 1011; the electronic device also includes a first distance detector 141, which is disposed near the first end 1011.

[0118] The second part 22 is provided with a first sensor 222 that can cooperate with the first distance detector 141. When the second part 22 is in the first working state, the first sensor 222 is opposite to the first distance detector 141.

[0119] For example, such as Figure 8 and Figure 9 As shown, a first sensor 222 can be provided at the middle position of the outer edge of the second part 22. The number of first sensors 222 can be one or more, specifically adapted to the number of first distance detectors 141 provided on the first side of the housing 11 of the electronic device 100. Two are shown in the figure.

[0120] The first sensing element 222 can be a magnet or other device that can be sensed by the distance detector 141. The first sensing element 222 is mainly used to cooperate with the first distance detector 141 in the electronic device 100 to realize proximity distance detection. Specifically, it can realize the curling posture detection of the protective cover 200 and detect whether the second part 22 is in the first working state.

[0121] Optionally, the housing 11 of the electronic device has a first end 1011 and a second end 1012 facing each other, the end face of the first end 1011 and the end face of the second end 1012 are sandwiched between the first side 101 and the second side 102, and the first sound guide hole 111 is disposed near the first end 1011; the electronic device also includes a second distance detector 1012, and the second distance detector 142 is disposed near the second end 1012;

[0122] The second part 22 is provided with a first sensor 222 that can cooperate with the second distance detector 142. When the second part 22 is in the second working state, the second part 22 is flattened and bent relative to the first part 21 to cover the display module 12. The first sensor 222 is opposite to the second distance detector 142.

[0123] The first sensor 222 can also be used in conjunction with the second distance detector 142 in the electronic device 100 to realize proximity distance detection. Specifically, it can realize the posture detection of the protective cover 200 and detect whether the second part 22 is in the second working state.

[0124] For example, in the initial state, such as Figure 5 As shown, a second distance detector 142 is provided at a corresponding position on the electronic device 100. When the protective cover 200 is closed, the first sensor 222 at the corresponding position approaches the second distance detector 142, such as... Figure 10 As shown, the second distance detector 142 triggers an interrupt signal, which is sent to the processor of the electronic device 100. After receiving the interrupt signal, the processor performs a screen-off operation and enters state one. It should be noted that the first sensor 222 on the protective case 200 can reuse the magnet already arranged in the electronic device 100 for detecting the closed state of the protective case, or it can be set separately.

[0125] After the protective case 200 is opened, the second distance detector 142 detects that the first sensor 222 has moved away, triggering an interrupt signal sent to the processor of the electronic device 100. The processor then performs a screen-on operation, entering state two. Figure 11 As shown. If the first distance detector 141 does not detect the first sensor 222 approaching, it is assumed that the protective sleeve 200 remains in an unfolded or reversed state. Figure 11 As shown.

[0126] If the user uses the protective case 200 as a stand, such as Figure 12 As shown, at this time, the electronic device 100 detects that the protective sleeve 200 is in a rolled-up posture. Specifically, at this time, the relative positions of the first sensor 222, the first distance detector 141, and the second distance detector 142 are as follows: Figure 12 As shown. When the second distance detector 142 is below the trigger threshold and the first distance detector 141 reaches the trigger threshold, it is considered that the first sensing element 222 is close to the first distance detector 141. At this time, the protective sleeve 200 is in a rolled-up posture and is used as a support for the electronic device 100. At this time, a large cavity, namely the first cavity 201, is formed on the back of the protective sleeve 200. This application uses this cavity as the low-frequency resonant cavity of the first sound-emitting module 131. The sound emitted by the first sound-emitting module 131 enters the first cavity 201 after passing through the housing 11, the first sound guide hole 111, the fourth sound guide hole 211, and the third sound guide hole 221, and resonates in the first cavity 201, thereby improving the low-frequency performance.

[0127] Optionally, such as Figure 9 As shown, the first part 21 is provided with an opening 212. When the second part 22 is in the first working state, the opening 212 is opposite to the first sensing element 222.

[0128] That is, in some embodiments, such as Figure 9 As shown, openings 212 are provided at corresponding positions on the first part 21 of the protective sleeve 200 to match the setting position of the first sensor 222 on the second part 22. The number of openings 212 is matched with the number of the first sensor 222, such as two in each case. The size of the openings 212 is matched with the size of the first sensor 222 to ensure that when the second part 22 of the protective sleeve 200 is rolled up to the back of the electronic device 100 and attached to the first part 21 in the first working state, the first sensor 222 is not basically blocked by the first part 21. This ensures that the first sensor 222 can be sensitively and accurately sensed by the first distance detector 141 on the electronic device 100, thereby improving the detection accuracy of the posture of the protective sleeve 200 bracket.

[0129] Optionally, the first distance detector 141 is a Hall sensor to ensure high detection sensitivity and accuracy, and the first sensing element 222 can be a magnetic element, such as a magnet.

[0130] Optionally, such as Figure 9 As shown, the first part 21 is provided with at least one second magnetic element 213 for detachable connection with the electronic device 100.

[0131] When the protective cover 200 is installed on the electronic device 100, the second magnetic component 213 and the first magnetic component 16 of the electronic device 100 are attracted to each other.

[0132] The second magnetic component 213 can be a magnetic component such as a magnet, used to fix the protective sleeve 200 to the electronic device 100 and facilitate communication.

[0133] In some embodiments, at least one second magnetic element 213 may be provided on the periphery of the first portion 21 of the protective sleeve 200 to achieve adsorption and fixation with the electronic device 100. It should be noted that the number of second magnetic elements 213 is not fixed; it can be one, four, or other numbers. The specific number can be adapted to the number of first magnetic elements 16 provided on the housing 11 of the electronic device 100, such as four in each case. Figure 9 The illustration takes the example of four second magnetic components 213 distributed around the periphery of the first part 21. For example, the first part 21 of the protective cover 200 is provided with four second magnetic components 213, which correspond to the four first magnetic components 16 assembled on the housing 11 of the electronic device 100, thereby realizing the adsorption and fixation of the protective cover 200 and the electronic device 100.

[0134] It should be noted that in this embodiment, the protective cover 200 may not be just a protective cover structure, but may also be a device such as a magnetic keyboard, that is, it has the functions of both a protective cover and a keyboard.

[0135] According to an embodiment of this application, a protective case 200 adapted to an electronic device includes a first part 21 for detachable connection with the electronic device. The protective case 200 also includes a second part 22 that can be bent relative to the first part 21 to support the first part 21. When the second part 22 is in a first working state, the second part 22 is bent to form a first cavity 201, and the first sound guide hole 111 communicates with the first cavity 201. In this way, by designing the second part of the matching protective case to bend to form the first cavity, the second part can achieve communication between the added sound guide hole and the first cavity in a working state, thereby enabling sound to be directed to the front of the back of the device for sound emission, ensuring that the electronic device can perform the full performance of the speaker components, and further guiding the sound to the first cavity, generating acoustic resonance in the cavity, achieving low-frequency enhancement, and improving the low-frequency audio performance of the electronic device.

[0136] Please see Figures 5 to 7 This application also provides an audio playback system, including the electronic device 100 and the protective case 200 as described in the foregoing embodiments.

[0137] Optionally, the electronic device 100 is detachably connected to the protective case 200. When the second part 22 is in the first working state, the first sound module 131 plays an audio file through the first cavity 201. When the second part 22 is in the second working state, the second part 22 is flattened and bent relative to the first part 21 to cover the display module 12, and the second sound module 132 plays an audio file.

[0138] In the second working state, the protective cover 200 is folded and closed. At this time, the audio can be played through the second sound module 132. Specifically, the sound of the audio file played by the second sound module 132 is guided to the sound outlet on the side of the electronic device for playback to obtain a better stereo effect. This can be understood as normal playback sound effect.

[0139] Optionally, the housing 11 of the electronic device 109 has a first end 1011 and a second end 1012 facing each other, with the end face of the first end 1011 and the end face of the second end 1012 sandwiched between the first side 101 and the second side 102, and the first sound guide hole 111 disposed near the first end 1011; the electronic device 100 also includes a first distance detector 141 disposed near the first end 1011;

[0140] The second part 22 is provided with a first sensor 222 that can cooperate with the first distance detector 141. When the second part 22 is in the first working state, the first sensor 222 is opposite to the first distance detector 141, and the first sound module 131 plays an audio file through the first cavity 201.

[0141] In the first working state, the protective cover 200 is used as a support. At this time, the audio can be played through the first sound module 131. Specifically, the sound of the audio file played by the first sound module 131 is guided to the first cavity 201 for playback to obtain better low-frequency performance and enhance the low-frequency effect of audio playback. This can be understood as enhancing the optimized playback sound effect.

[0142] Optionally, the electronic device 100 also includes a second distance detector 142 that can cooperate with the first sensor 222, the second distance detector 142 being disposed close to the second end 1012;

[0143] When the second part 22 is in the second working state, the second part 22 is flattened and bent relative to the first part 21 to cover the display module 12. The first sensor 222 is opposite to the second distance detector 142, and the second sound module 132 plays an audio file.

[0144] It should be noted that this embodiment is a system-side implementation method corresponding to the aforementioned electronic device and protective case structure embodiment. The specific implementation method can be found in the relevant descriptions in the aforementioned embodiments, and the same beneficial effects can be achieved. To avoid repetition, it will not be described again here.

[0145] Please see Figure 13 , Figure 13 The flowchart of the audio playback method provided in this application embodiment is applied to the electronic device 100 described in the foregoing embodiment, and the electronic device 100 is equipped with the protective case 200 described in the foregoing embodiment. Figure 13 As shown, the method includes the following steps:

[0146] Step 1301: When the electronic device 100 is playing audio, check the usage status of the protective case 200;

[0147] Step 1302: When the protective case 200 is in the first use state, the audio is played by calling the first sound effect parameter. The first use state is when the second part of the protective case 200 is rolled up to the back of the electronic device 100 to be used as a support for the electronic device 100.

[0148] Step 1303: When the protective case 200 is not in the first use state, the audio is played by calling the second sound effect parameter. The audio playback performance corresponding to the first sound effect parameter is better than the audio playback performance corresponding to the second sound effect parameter.

[0149] It is understood that the first usage state corresponds to the first working mode described above.

[0150] The specific detection method for the usage status of the protective case 200 can be through a distance detector such as a Hall sensor, or it can be through infrared proximity, ultrasonic waves, gold fingers, NFC and other detection methods.

[0151] It should be noted that this embodiment is a method implementation method corresponding to the aforementioned electronic device and protective case structure embodiment. The specific implementation method can be found in the relevant descriptions in the aforementioned embodiments and can achieve the same beneficial effects. To avoid repetition, it will not be described again here.

[0152] Optionally, the detection of the usage status of the protective cover 200 includes:

[0153] The usage status of the protective cover 200 is detected by the first distance detector 141 and / or the second distance detector 142 of the electronic device 100;

[0154] Specifically, when the first sensor 222 of the protective cover 200 is detected to be close by the first distance detector 141, it is determined that the protective cover 200 is in the first use state;

[0155] When the first sensor 222 is detected to be approaching by the second distance detector 142, it is determined that the protective cover 200 is in a second use state, which is a closed state;

[0156] If the first sensor 222 is not approached by the first distance detector 141 and the first sensor 222 is not approached by the second distance detector 142, it is determined that the protective cover 200 is not in the third use state, which is the state in which the second part 22 and the first part 21 of the protective cover 200 are in a relatively unfolded state.

[0157] It is understandable that the second usage state corresponds to the second working mode.

[0158] For example, in the initial state, such as Figure 5 As shown, a second distance detector 142 is located at a corresponding position on the electronic device 100. When the protective cover 200 is closed, the first sensor 222 at the corresponding position approaches the second distance detector 142 (as in a third Hall). Figure 10As shown, the second distance detector 142 triggers an interrupt signal, which is sent to the processor of the electronic device 100. Upon receiving the interrupt signal, the processor performs a screen-off operation, entering state one. It should be noted that the first sensor 222 on the protective case 200 can reuse the magnet already installed in the electronic device 100 for detecting the closed state of the protective case, or it can be set separately. If the user performs multimedia playback on the electronic device 100 at this time, sound effect parameter A is invoked; sound effect parameter A can be a standard sound effect parameter.

[0159] After the protective case 200 is opened, the second distance detector 142 detects that the first sensor 222 has moved away, triggering an interrupt signal sent to the processor of the electronic device 100. The processor then performs a screen-on operation, entering state two. Figure 11 As shown. If the first distance detector 141 (such as the first Hall and the second Hall) does not detect the first sensor 222 approaching, it is assumed that the protective sleeve 200 remains in an unfolded or reversed state. Figure 11 As shown. If the user performs a multimedia playback operation on the electronic device 100 at this time, the sound effect parameter A will still be called.

[0160] If the user uses the protective case 200 as a stand, such as Figure 12 As shown, at this time, the electronic device 100 detects that the protective sleeve 200 is in a rolled-up posture. Specifically, at this time, the relative positions of the first sensor 222, the first distance detector 141, and the second distance detector 142 are as follows: Figure 12 As shown. When the second distance detector 142 is below the trigger threshold and the first distance detector 141 reaches the trigger threshold, it is considered that the first sensing element 222 is close to the first distance detector 141. At this time, the protective sleeve 200 is in a rolled-up posture and is used as a support for the electronic device 100. At this time, a large cavity, namely the first cavity 201, is formed on the back of the protective sleeve 200. This application uses this cavity as the low-frequency resonant cavity of the first sound-emitting module 131. The sound emitted by the first sound-emitting module 131 enters the first cavity 201 after passing through the housing 11, the first sound guide hole 111, the fourth sound guide hole 211, and the third sound guide hole 221, and resonance is generated in the first cavity 201 to improve the low-frequency performance. At the same time, specially optimized audio parameters B are used for multimedia playback. Audio parameters B are optimized based on sound effect parameters A, and the sound loudness, bass and other sound effects are better.

[0161] The above example flowchart can be seen as follows: Figure 14 As shown.

[0162] The triggering conditions for the first distance detector 141 and the second distance detector 142 can be as follows: Figure 15 The meaning is as shown.

[0163] Using acoustic simulation tools, the structure of this application was simulated, and comparative data measured at a distance of 30cm from the center of the screen at a distance of 100cm from the electronic device were obtained, as shown below. Figure 16 As shown in the figure, the black curve represents the acoustic frequency response without the resonant cavity, while the red curve represents the frequency response with the resonant cavity added. It can be seen that the low-frequency and mid-frequency performance is significantly improved after adding the resonant cavity, reaching more than 3dB.

[0164] In this embodiment, by superimposing the first sound guide hole on the back of the electronic device 100 and the third and fourth sound guide holes and the first resonant cavity on the protective cover 200, and by adding special tuning of the sound effect parameters, the audio performance of the electronic device can be further improved and the user experience can be enhanced.

[0165] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0166] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An electronic device, characterized in that, include: The housing has a first side and a second side opposite to each other. A first sound guide hole is provided on the second side of the housing. The housing also has a plurality of end faces sandwiched between the first side and the second side, and at least one of the end faces is provided with a second sound guide hole. The display module has its display surface facing the first side of the housing. A first sound-emitting module is disposed near the first sound guide hole, with the sound-emitting side of the first sound module facing the second side of the housing; The second sound-emitting module is positioned close to the second sound guide hole, with the sound output side of the second sound-emitting module facing the second sound guide hole.

2. The electronic device according to claim 1, characterized in that, It also includes a connection assembly for detachable connection with an external device; the housing has a first end and a second end opposite to each other, the end face of the first end and the end face of the second end are sandwiched between the first side and the second side, and the first sound guide hole is disposed close to the first end; In the case where the connecting assembly includes a first magnetic element, the first magnetic element is disposed near a first end of the housing; In the case where the connecting assembly includes two first magnetic elements, one of the first magnetic elements is disposed near a first end of the housing, and the other first magnetic element is disposed near a second end of the housing; or When the connecting assembly includes N first magnetic elements, where N is a positive integer greater than 2, at least N / 2 of the first magnetic elements are disposed near the first end of the housing.

3. The electronic device according to claim 1, characterized in that, The housing has a first end and a second end opposite to each other, with the end face of the first end and the end face of the second end sandwiched between the first side and the second side, and the first sound guide hole is disposed near the first end; the electronic device further includes a first distance detector, which is disposed near the first end.

4. The electronic device according to claim 3, characterized in that, The electronic device further includes a second distance detector, which is disposed close to the second end.

5. The electronic device according to claim 1, characterized in that, The first sound-emitting module is positioned opposite to the first sound guide hole. The housing has a first end and a second end opposite to each other, with the end face of the first end and the end face of the second end sandwiched between the first side and the second side; the first sound guide hole is disposed near the first end, and / or the first sound-emitting module is a subwoofer unit.

6. A protective case, characterized in that, The protective sleeve includes a first portion for detachable connection with an electronic device as claimed in any one of claims 1 to 5, and further includes a second portion that can be bent relative to the first portion to support the first portion; when the second portion is in a first working state, the second portion is bent to form a first cavity, and the first sound guide hole communicates with the first cavity.

7. The protective sleeve according to claim 6, characterized in that, When the second part is in the second working state, the second part is flattened and bent relative to the first part to cover the display module.

8. The protective sleeve according to claim 6, characterized in that, The second part is provided with a third sound guide hole. When the second part is in the first working state, the first sound guide hole and the third sound guide hole are connected to each other so that the first sound guide hole is connected to the first cavity.

9. The protective sleeve according to claim 6, characterized in that, The first part is provided with a fourth sound guide hole. When the first part is detachably connected to the electronic device, the first sound guide hole is connected to the fourth sound guide hole.

10. The protective sleeve according to claim 6, characterized in that, The housing of the electronic device has a first end and a second end opposite to each other, the end face of the first end and the end face of the second end are sandwiched between the first side and the second side, and the first sound guide hole is disposed near the first end; the electronic device also includes a first distance detector, which is disposed near the first end; The second part is provided with a first sensor that can cooperate with the first distance detector. When the second part is in the first working state, the first sensor is opposite to the first distance detector.

11. The protective sleeve according to claim 7 or 10, characterized in that, The housing of the electronic device has a first end and a second end opposite to each other, the end face of the first end and the end face of the second end are sandwiched between the first side and the second side, and the first sound guide hole is disposed near the first end; the electronic device also includes a second distance detector, which is disposed near the second end; The second part is provided with a first sensor that can cooperate with the second distance detector. When the second part is in the second working state, the second part is flattened and bent relative to the first part to cover the display module. The first sensor is opposite to the second distance detector.

12. An audio playback system, characterized in that, Includes the electronic device as claimed in any one of claims 1 to 5 and the protective case as claimed in any one of claims 6 to 11.

13. The audio playback system according to claim 12, characterized in that, The electronic device is detachably connected to the protective cover. When the second part is in the first working state, the first sound module plays an audio file through the first cavity. When the second part is in the second working state, the second part is flattened, the second part is bent relative to the first part to cover the display module, and the second sound module plays an audio file.

14. The audio playback system according to claim 12, characterized in that, The housing of the electronic device has a first end and a second end opposite to each other, the end face of the first end and the end face of the second end are sandwiched between the first side and the second side, and the first sound guide hole is disposed near the first end; the electronic device also includes a first distance detector, which is disposed near the first end; The second part is provided with a first sensor that can cooperate with the first distance detector. When the second part is in the first working state, the first sensor is opposite to the first distance detector, and the first sound module plays an audio file through the first cavity.

15. The audio playback system according to claim 12, characterized in that, The electronic device further includes a second distance detector that can cooperate with the first sensor, the second distance detector being disposed close to the second end; When the second part is in the second working state, the second part is flattened, the second part is bent relative to the first part to cover the display module, the first sensor is opposite to the second distance detector, and the second sound module plays an audio file.

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