Electronic device

Abstract

The application discloses an electronic device, comprising: a shell, a cavity is arranged in the shell, the shell is further provided with a first sound outlet and a second sound outlet, the first sound outlet and the second sound outlet are both communicated with the cavity; a loudspeaker is arranged in the cavity, the loudspeaker comprises a front cavity cover plate, a first diaphragm and a loudspeaker single body, the first front cavity is enclosed between the front cavity cover plate, the first diaphragm and the loudspeaker single body, the first front cavity is communicated with the first sound outlet, and the first diaphragm is communicated with the cavity and the first front cavity; a receiver is arranged in the cavity, the second front cavity is enclosed between the receiver and the cavity wall of the cavity, and the second front cavity is communicated with the second sound outlet; wherein the signal phase of the excitation signal of the loudspeaker is synchronous with the signal phase of the excitation signal of the receiver.

Description

Technical Field

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

[0002] In related technologies, a speaker and a receiver are installed inside the casing of a mobile phone, with a rear cavity formed between the receiver and the casing. In dual-speaker mode, when operating at high power, the large amplitude and strong airflow pushing effect will generate a large airflow impact in the rear cavity. This airflow impact is transmitted to the phone casing, causing the casing to vibrate and resulting in a noticeable casing vibration phenomenon, which affects the user experience. Summary of the Invention

[0003] This application aims to provide an electronic device that at least solves one of the problems in the prior art where the mobile phone casing vibrates significantly and exhibits obvious casing vibration when the mobile phone is in dual-speaker mode.

[0004] To solve the above-mentioned technical problems, this application is implemented as follows:

[0005] On one hand, embodiments of this application propose an electronic device, including: a housing, a cavity within the housing, and a first sound outlet and a second sound outlet, both of which communicate with the cavity; a loudspeaker disposed within the cavity, the loudspeaker including a front cavity cover, a first diaphragm, and a loudspeaker unit, the front cavity cover, the first diaphragm, and the loudspeaker unit enclosing a first front cavity, the first front cavity communicating with the first sound outlet, and the first diaphragm communicating with the cavity and the first front cavity; and a receiver disposed within the cavity, the receiver and the cavity wall enclosing a second front cavity, the second front cavity communicating with the second sound outlet; wherein, the signal phase of the excitation signal of the loudspeaker is synchronized with the signal phase of the excitation signal of the receiver.

[0006] In embodiments of this application, the electronic device includes a housing, a speaker, and a receiver. The housing contains a cavity for housing the speaker and the receiver. The housing has a first sound outlet and a second sound outlet. The speaker has a first front cavity. A second front cavity is formed between the receiver and the cavity wall. The first front cavity communicates with the first sound outlet, and the second front cavity communicates with the second sound outlet. When the electronic device is operating, some airflow can flow from the first front cavity to the first sound outlet, and some airflow can flow from the second front cavity to the second sound outlet.

[0007] Furthermore, the loudspeaker includes a front cavity cover, a first diaphragm, and a loudspeaker driver. The front cavity cover, the first diaphragm, and the loudspeaker driver enclose a first front cavity. The first diaphragm connects the cavity and the first front cavity; that is, the first end face of the first diaphragm can form part of the cavity wall of the first front cavity, and the second end face of the first diaphragm can form part of the cavity wall of the cavity. The first end face and the second end face of the first diaphragm are correspondingly arranged. Part of the airflow in the first front cavity can flow to the cavity via the first diaphragm.

[0008] The excitation signal phase of the loudspeaker is synchronized with the excitation signal phase of the receiver; that is, the electrical excitation received by the loudspeaker and the receiver is in phase. When the electronic device is in dual-speaker mode, the loudspeaker radiates the sound field from the first sound outlet, and the receiver radiates the sound field from the second sound outlet.

[0009] Taking the speaker vibrating upwards (from the display screen of the housing towards the battery cover of the housing) as an example, the receiver also needs to vibrate upwards (from the battery cover of the housing towards the display screen of the housing) to create an in-phase sound source.

[0010] The speaker and receiver operate simultaneously, moving in phase. The airflow generated in the first front cavity is transmitted to the housing cavity through the first diaphragm. The first diaphragm moves upward under the impact of the airflow in the first front cavity, creating a local high pressure at its top. The receiver vibrates upward, creating a local low pressure at the corresponding position in the receiver's rear cavity (wherein, a portion of the cavity wall between the receiver and the bottom of the receiver forms the receiver's rear cavity, which is connected to the first front cavity via the first diaphragm; in other words, a portion of the housing cavity forms the receiver's rear cavity). Since fluids always tend to flow from high-pressure zones to low-pressure zones, the airflow at the top of the first diaphragm and the bottom of the receiver can form a loop. This reduces the impact of the airflow on the electronic device's housing, thereby reducing housing vibration. This solves the housing vibration problem in dual-speaker mode in related technologies.

[0011] It is understandable that in the dual-speaker mode of electronic devices, since the receiver and the speaker move in phase, the outer side of the first diaphragm and the bottom of the receiver can form airflow impacts with opposite phases. As anti-phase dipole flows, the two can cancel each other out in the cavity of the housing, thereby reducing the housing vibration.

[0012] 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

[0013] 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:

[0014] Figure 1 This is a cross-sectional view of an electronic device according to an embodiment of this application;

[0015] Figure 2 This is a schematic diagram of the airflow direction when an electronic device according to an embodiment of this application is in operation;

[0016] Figure 3 This is a cross-sectional view of a loudspeaker according to an embodiment of this application;

[0017] Figure 4 This is a schematic diagram of the structure of a loudspeaker according to an embodiment of this application;

[0018] Figure 5 This is an exploded view of a loudspeaker according to an embodiment of this application;

[0019] Figure 6 This is a schematic diagram comparing the shell vibration amplitude of electronic devices in related technologies and the electronic device of this application.

[0020] Figure label:

[0021] Figures 1 to 5 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0022] 100 Electronic device, 110 Housing, 112 Chamber, 114 First sound outlet, 116 Second sound outlet, 118 Battery cover, 120 Display screen, 130 Speaker, 132 Front cavity cover, 134 First diaphragm, 136 Speaker driver, 138 First front cavity, 140 Opening, 142 Rear cavity cover, 144 Rear cavity of speaker, 146 Second diaphragm, 150 Receiver, 152 Bottom of receiver, 154 Third diaphragm, 160 Second front cavity, 170 Rear cavity of receiver. Detailed Implementation

[0023] 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.

[0024] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "multiple" means two or more. Furthermore, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0025] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0026] 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.

[0027] The following is combined with Figures 1 to 6 This application describes an electronic device 100 according to an embodiment of the present application.

[0028] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5As shown, an electronic device 100 according to some embodiments of this application includes: a housing 110, a cavity 112 provided inside the housing 110, and a first sound outlet 114 and a second sound outlet 116, both of which communicate with the cavity 112; and a speaker 130 disposed within the cavity 112, the speaker 130 including a front cavity cover 132, a first diaphragm 134, and a speaker unit 136. A first front cavity 138 is formed by the speaker units 136, which is connected to a first sound outlet 114. A first diaphragm 134 is connected to a chamber 112 and a first front cavity 138. A receiver 150 is disposed in the chamber 112. A second front cavity 160 is formed by the receiver 150 and the cavity wall of the chamber 112, which is connected to a second sound outlet 116. The signal phase of the excitation signal of the speaker 130 is synchronized with the signal phase of the excitation signal of the receiver 150.

[0029] In this embodiment, the electronic device 100 includes a housing 110, a speaker 130, and a receiver 150. The housing 110 has a chamber 112 for housing the speaker 130 and the receiver 150. The housing 110 has a first sound outlet 114 and a second sound outlet 116. The speaker 130 has a first front cavity 138. A second front cavity 160 is formed between the receiver 150 and the cavity wall of the chamber 112. The first front cavity 138 communicates with the first sound outlet 114, and the second front cavity 160 communicates with the second sound outlet 116. When the electronic device 100 is operating, some airflow can flow from the first front cavity 138 to the first sound outlet 114, and some airflow can flow from the second front cavity 160 to the second sound outlet 116.

[0030] Furthermore, the loudspeaker 130 includes a front cavity cover 132, a first diaphragm 134, and a loudspeaker driver 136. The front cavity cover 132, the first diaphragm 134, and the loudspeaker driver 136 enclose a first front cavity 138. The first diaphragm 134 connects the chamber 112 and the first front cavity 138. That is, the first end face of the first diaphragm 134 can form part of the cavity wall of the first front cavity 138, and the second end face of the first diaphragm 134 can form part of the cavity wall of the chamber 112. The first end face and the second end face of the first diaphragm 134 are correspondingly arranged. Part of the airflow in the first front cavity 138 can flow to the chamber 112 via the first diaphragm 134.

[0031] The excitation signal phase of the loudspeaker 130 is synchronized with the excitation signal phase of the receiver 150, that is, the electrical excitation received by the loudspeaker 130 and the receiver 150 is in phase. When the electronic device 100 is in dual loudspeaker 130 mode, the loudspeaker 130 radiates a sound field from the first sound outlet 114, and the receiver 150 radiates a sound field from the second sound outlet 116.

[0032] Taking the speaker 130 vibrating upward (from the display screen 120 of the housing 110 towards the battery cover 118 of the housing 110) as an example, the receiver 150 needs to vibrate upward (from the battery cover 118 of the housing 110 towards the display screen 120 of the housing 110) to construct an in-phase sound source.

[0033] The speaker 130 and receiver 150 operate simultaneously, and the speaker 130 and receiver 150 move in the same phase. The airflow formed at the first front cavity 138 can be transmitted to the cavity 112 of the housing 110 through the first diaphragm 134. The first diaphragm 134 moves upward due to the impact of the airflow in the first front cavity 138, forming a local high pressure at the top of the first diaphragm 134. The receiver 150 vibrates upward, forming a local low pressure at the corresponding position of the rear cavity 170 of the receiver (wherein, a portion of the cavity wall of the cavity 112 and the bottom 152 of the receiver form the rear cavity 170 of the receiver, and the rear cavity 170 of the receiver and the first front cavity 138 are connected through the first diaphragm 134. In other words, a portion of the cavity 112 of the housing 110 forms the rear cavity 170 of the receiver). Since fluids always tend to flow from high-pressure zones to low-pressure zones, the airflow at the top of the first diaphragm 134 and the bottom 152 of the receiver can form a loop. This reduces the impact of the airflow on the housing 110 of the electronic device 100, thereby reducing housing vibration. This solves the housing vibration problem in the dual-speaker 130 mode in related technologies.

[0034] It is understandable that in the dual speaker 130 mode of the electronic device 100, since the receiver 150 and the speaker 130 move in phase, the outer side of the first diaphragm 134 and the bottom 152 of the receiver can form an airflow impact with opposite phase. As an anti-phase dipole flow, the two can cancel each other out in the cavity 112 of the housing 110, thereby reducing the housing vibration.

[0035] Specifically, Figure 2 The arrows in the diagram indicate the direction of airflow.

[0036] Specifically, such as Figure 6 As shown, the electronic device 100 of this application significantly reduces the shell vibration phenomenon caused by low-frequency sound waves. At higher frequencies, due to the shorter wavelength, the sound wave energy is small and dissipates quickly. At this time, the shell vibration phenomenon of the electronic device 100 of this application is not obvious compared with electronic devices in related technologies.

[0037] Specifically, the front cavity cover plate 132 is provided with stiffening plates, which are bent to form part of the cavity wall of the first front cavity 138.

[0038] Specifically, electronic device 100 can be a mobile terminal such as a mobile phone, wearable device, tablet computer, laptop computer, mobile computer, augmented reality device (also known as AR device), virtual reality device (also known as VR device), and handheld game console, etc.

[0039] In some embodiments, such as Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, the front cavity cover plate 132 has an opening 140, and the first diaphragm 134 is located at the opening 140.

[0040] In this embodiment, the cooperation structure of the front cavity cover 132 and the first diaphragm 134 is further defined. Specifically, the front cavity cover 132 is provided with an opening 140, and the first diaphragm 134 is provided at the opening 140. The first diaphragm 134 is connected to the wall of the opening 140, so that part of the airflow in the first front cavity 138 can flow through the first diaphragm 134 to the rear cavity 170 of the receiver.

[0041] That is, the front cavity cover 132 and the first diaphragm 134 cooperate to achieve a composite structure of rigid cover and flexible diaphragm. The first front cavity 138 has the function of guiding air to the first sound outlet 114 and also the function of guiding air to the rear cavity 170 of the receiver. Without increasing the stacking pressure and production cost of the electronic device 100, the goal of reducing shell vibration of the electronic device 100 in the dual speaker 130 mode is achieved.

[0042] Specifically, the front cavity cover plate 132 has an opening 140 in the middle.

[0043] Specifically, the first diaphragm 134 is glued to the first sound outlet 114 of the front cavity cover 132. The speaker unit 136 is glued to the front cavity cover 132.

[0044] In some embodiments, such as Figure 1 As shown, the housing 110 includes a battery cover 118 and a first diaphragm 134 located between the battery cover 118 and the speaker unit 136.

[0045] In this embodiment, the housing 110 includes a battery cover 118, defining the fit between the battery cover 118, the first diaphragm 134, and the speaker unit 136. Specifically, the first diaphragm 134 is located between the battery cover 118 and the speaker unit 136, meaning that the first diaphragm 134 and the speaker unit 136 are arranged along the thickness direction of the housing 110. This arrangement makes reasonable use of the internal space of the electronic device 100. Based on the existing structure of the speaker 130, by improving the structure of the front cavity cover plate 132 of the speaker 130, the effect of reducing the shell vibration of the electronic device 100 is ensured, without increasing the occupancy rate of the speaker 130 on the thickness space of the electronic device 100, and without affecting the thickness dimension of the electronic device 100.

[0046] In some embodiments, such as Figure 1 As shown, the electronic device 100 also includes a display screen 120, the distance from the speaker 130 to the battery cover 118 is greater than the distance from the speaker 130 to the display screen 120, and the distance from the receiver 150 to the battery cover 118 is greater than the distance from the receiver 150 to the display screen 120.

[0047] In this embodiment, the housing 110 also includes a display screen 120. The distance from the speaker 130 to the battery cover 118 is greater than the distance from the speaker 130 to the display screen 120, and the distance from the receiver 150 to the battery cover 118 is greater than the distance from the receiver 150 to the display screen 120. This arrangement ensures the volume of the receiver's rear cavity 170 and ensures that the airflow in the first front cavity 138 can effectively flow to the receiver's rear cavity 170 through the first diaphragm 134. If the distance from the speaker 130 to the battery cover 118 is less than the distance from the speaker 130 to the display screen 120, and / or the distance from the receiver 150 to the battery cover 118 is less than the distance from the receiver 150 to the display screen 120, then the receiver's rear cavity 170 will be compressed, resulting in a smaller unit flow area in the receiver's rear cavity 170. This will increase the deflection of the airflow, thereby increasing the airflow loss and increasing the operating noise of the electronic device 100.

[0048] In some embodiments, such as Figure 1 and Figure 2 As shown, a first sound outlet 114 is provided on the side wall of the housing 110, and a second sound outlet 116 and a display screen 120 are located on the same side of the housing 110.

[0049] In this embodiment, the positional relationship between the first sound outlet 114 and the second sound outlet 116 is further defined. The first sound outlet 114 is provided on the side wall of the housing 110, that is, the first sound outlet 114 is located on the side of the housing 110. The second sound outlet 116 and the display screen 120 are located on the same side of the housing 110, that is, the second sound outlet 116 is located on the side of the housing 110 away from the battery cover 118. This arrangement can ensure the volume of the rear cavity 170 of the receiver and provide effective and reliable structural support for reducing the shell vibration effect of the electronic device 100 in the dual speaker 130 mode.

[0050] In some embodiments, such as Figure 1 As shown, along the thickness direction perpendicular to the housing 110, the speaker 130 is located on one side of the receiver 150.

[0051] In this embodiment, the positional relationship between the speaker 130 and the receiver 150 is further defined. The speaker 130 is located on one side of the receiver 150 along the thickness direction perpendicular to the housing 110. This arrangement does not increase the occupancy rate of the speaker 130 and receiver 150 on the thickness space of the electronic device 100, and can ensure the volume of the rear cavity 170 of the receiver, thus ensuring the effectiveness and feasibility of reducing the housing vibration effect.

[0052] Furthermore, when the electronic device 100 is in dual-speaker 130 mode, the receiver 150 and the speaker 130 operate in phase, forming a dipole flow with opposite phase in the thickness direction perpendicular to the housing 110. This counteracts the airflow impact generated by the receiver's rear cavity 170 when the receiver 150 operates with large amplitude. This reduces housing vibration in dual-speaker 130 mode without increasing the stacking pressure and production cost of the electronic device 100.

[0053] Specifically, such as Figure 1 As shown, the distance from the receiver 150 to the top of the housing 110 is less than the distance from the speaker 130 to the top of the housing 110. That is, the receiver 150 is closer to the top of the housing 110, and the speaker 130 is closer to the bottom of the housing 110.

[0054] Specifically, the speaker 130 is secured to the bottom of the electronic device 100 by fasteners (e.g., fasteners including screws, bolts, or rivets). The receiver 150 is secured to the top of the electronic device 100 by adhesive and pressure.

[0055] In some embodiments, such as Figure 1 , Figure 3 and Figure 5As shown, the loudspeaker 130 also includes: a rear cavity cover 142, which is connected to the front cavity cover 132, and a loudspeaker unit 136 located between the front cavity cover 132 and the rear cavity cover 142. The loudspeaker unit 136 separates the area between the rear cavity cover 142 and the front cavity cover 132 into a first front cavity 138 and a rear cavity 144 of the loudspeaker.

[0056] In this embodiment, the loudspeaker 130 further includes a rear cavity cover 142, which is connected to the front cavity cover 132. The rear cavity cover 142 and the front cavity cover 132 define a space for accommodating the loudspeaker unit 136. The loudspeaker unit 136 cooperates with the cavity wall of the rear cavity cover 142 and / or the cavity wall of the front cavity cover 132 to separate the area between the rear cavity cover 142 and the front cavity cover 132 into a first front cavity 138 and a rear cavity 144 of the loudspeaker.

[0057] Specifically, the rear cavity cover 142 is located between the display screen 120 and the front cavity cover 132 of the housing 110.

[0058] Specifically, the front cavity cover plate 132 and the rear cavity cover plate 142 are connected by ultrasonic welding.

[0059] In some embodiments, such as Figure 1 and Figure 3 As shown, the loudspeaker 130 also includes a second diaphragm 146 disposed on the loudspeaker unit 136, and the second diaphragm 146 is in communication with the first front cavity 138.

[0060] In some embodiments, such as Figure 1 and Figure 3 As shown, the receiver 150 also includes a third diaphragm 154, which is connected to the second front cavity 160.

[0061] Specifically, taking the downward vibration of the third diaphragm 154 as an example, in the dual speaker 130 mode, the speaker 130 and the receiver 150 work simultaneously. The airflow impact formed at the first front cavity 138 can be transmitted to the cavity 112 of the housing 110 through the first diaphragm 134. Since the second diaphragm 146 and the third diaphragm 154 move in the same phase, airflow impacts with opposite phases can be formed on the outside of the first diaphragm 134 and the bottom 152 of the receiver. As anti-phase dipole flows, the two can cancel each other out in the cavity 112 to reduce the housing vibration.

[0062] Specifically, taking the upward movement of the second diaphragm 146 on the speaker unit 136 as an example, the third diaphragm 154 of the receiver 150 needs to move upward to construct an in-phase sound source. At this time, the airflow inside the housing 110 of the electronic device 100 is as follows... Figure 2 As shown. Figure 2As shown, the first diaphragm 134 moves upward under the impact of the airflow in the first front cavity 138, forming a local high pressure at its top. The third diaphragm 154 of the receiver 150 moves upward, forming a local low pressure at the corresponding position in its rear cavity. Since fluids always tend to flow from high-pressure zones to low-pressure zones, the airflow at the top of the first diaphragm 134 and the bottom 152 of the receiver can form a loop, reducing the impact of the airflow on the overall housing 110, thereby reducing housing vibration.

[0063] 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.

[0064] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. An electronic device, comprising: The application relates to a speakerphone, which comprises a shell, a chamber in the shell, a first sound outlet and a second sound outlet in the shell, a speaker in the chamber, a receiver in the chamber, and a display screen. The speaker comprises a front cavity cover plate, a first diaphragm and a speaker unit, and a first front cavity is formed among the front cavity cover plate, the first diaphragm and the speaker unit. The first front cavity is connected with the first sound outlet, and the first diaphragm is connected with the chamber and the first front cavity. The signal phase of the excitation signal of the speaker is synchronized with the signal phase of the excitation signal of the receiver. In the case that the speaker vibrates in the direction from the display screen of the shell to the battery cover of the shell, the receiver vibrates in the direction from the battery cover of the shell to the display screen of the shell. The first diaphragm moves upward under the impact of the airflow in the first front cavity, and a local high pressure is formed at the top of the first diaphragm.

2. The electronic device of claim 1, wherein, The receiver vibrates upward, and a local low pressure is formed at the corresponding position of the back cavity of the receiver.

3. The electronic device of claim 1 or 2, wherein, The top of the first diaphragm and the bottom of the receiver form an airflow loop.

4. The electronic device of claim 3, wherein, The front cavity cover plate is provided with an opening, and the first diaphragm is arranged at the opening. The shell comprises a battery cover, and the first diaphragm is located between the battery cover and the speaker unit.

5. The electronic device of claim 4, wherein, The application further relates to a display screen.

6. The electronic device of claim 1 or 2, wherein, The distance from the speaker to the battery cover is greater than the distance from the speaker to the display screen, and the distance from the receiver to the battery cover is greater than the distance from the receiver to the display screen.

7. The electronic device of claim 6, wherein, The first sound outlet, the second sound outlet and the display screen are located on the same side of the shell.

8. The electronic device of claim 1 or 2, wherein, The speaker is located on one side of the receiver along the thickness direction of the shell. The distance from the receiver to the top of the shell is less than the distance from the speaker to the top of the shell.

9. The electronic device of claim 1 or 2, wherein, The speaker further comprises a back cavity cover plate connected with the front cavity cover plate. The speaker unit is located between the front cavity cover plate and the back cavity cover plate, and separates the area between the front cavity cover plate and the back cavity cover plate into the first front cavity and a back cavity of the speaker.

10. The electronic device of claim 1 or 2, wherein, The speaker further comprises a second diaphragm arranged on the speaker unit and connected with the first front cavity. The receiver further comprises a third diaphragm connected with the second front cavity.

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