WO2024160134A1

WO2024160134A1 - Electronic device

Info

Publication number: WO2024160134A1
Application number: PCT/CN2024/074164
Authority: WO
Inventors: 李伟; 邹瑜忠
Original assignee: 维沃移动通信有限公司
Priority date: 2023-01-31
Filing date: 2024-01-26
Publication date: 2024-08-08
Also published as: CN115967900A

Abstract

Embodiments of the present application relate to the field of electronics, and provide an electronic device. The electronic device comprises a frame body, a screen, and an acoustic assembly. The screen is disposed on the frame body. The acoustic assembly is connected to the frame body, and the acoustic assembly is located between the frame body and the screen. The acoustic assembly comprises a housing, a first vibrating diaphragm and a second vibrating diaphragm. The first vibrating diaphragm and the second vibrating diaphragm are disposed on the housing, and there is a rear cavity between the first vibrating diaphragm and the second vibrating diaphragm. When the acoustic assembly works in a loudspeaker mode and the acoustic assembly is in a first volume scene, the first vibrating diaphragm moves relative to the second vibrating diaphragm in the direction away from the second vibrating diaphragm.

Description

Electronic devices

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority to Chinese patent application 202310070251.6 filed on January 31, 2023, the entire contents of which are incorporated herein by reference.

Technical Field

The present application belongs to the field of electronics, and in particular, relates to an electronic device.

Background Art

With the rapid development of electronic technology, electronic devices such as smart phones and tablet computers are becoming more and more popular and gradually become an indispensable part of people's daily life. In order to meet people's higher and higher requirements for electronic devices.

With the development of technology, users are pursuing higher audio performance of electronic devices such as mobile phones, especially the low-frequency effect of speakers of electronic devices. However, in order to save space inside electronic devices, electronic devices do not have enough space to increase the size of the speaker's back cavity, which makes it difficult for speakers to obtain good low-frequency effects.

Summary of the invention

The embodiment of the present application provides an electronic device, which can at least solve the problem of poor low-frequency effect in electronic devices.

An embodiment of the present application provides an electronic device, including a frame, a screen and an acoustic component; the screen is arranged in the frame; the acoustic component is connected to the frame, and the acoustic component is located between the frame and the screen, the acoustic component includes a shell, a first diaphragm and a second diaphragm, the first diaphragm and the second diaphragm are arranged in the shell, and a first back cavity is provided between the first diaphragm and the second diaphragm, wherein, when the acoustic component operates in a speaker mode and the acoustic component is in a first volume scene, the first diaphragm moves relative to the second diaphragm in a direction away from the second diaphragm.

The electronic device provided in the embodiment of the present application includes a frame, a screen and an acoustic component. The acoustic component includes a shell, a first diaphragm and a second diaphragm, with a first back cavity between the first diaphragm and the second diaphragm. When the acoustic component works in the speaker mode and is in the first volume scene, the second diaphragm can vibrate normally to make sound, and the first diaphragm moves relative to the second diaphragm in a direction away from the second diaphragm. The movement of the first diaphragm increases the volume of the first back cavity between the first diaphragm and the second diaphragm, thereby increasing the volume of the total back cavity of the acoustic component, improving the sound performance of the acoustic component, and improving the low-frequency effect of the sound output, making the sound rounder and fuller. In addition, the increase in the total back cavity volume can also achieve the purpose of saving power and increase the use time of electronic equipment.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solution of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

FIG1 is a schematic diagram of the structure of an electronic device in a first volume scenario according to an embodiment of the present application;

FIG2 is a schematic diagram of the structure of an electronic device in a non-first volume scenario according to an embodiment of the present application;

FIG3 is a schematic diagram of the structure of an acoustic component of an electronic device according to an embodiment of the present application;

FIG4 is an exploded schematic diagram of an acoustic component of an electronic device according to an embodiment of the present application;

FIG5 is a schematic structural diagram of a frame of an electronic device according to an embodiment of the present application;

FIG6 is a schematic diagram of a partial structure of an electronic device according to an embodiment of the present application;

FIG. 7 is a schematic diagram of an exploded view of an electronic device according to an embodiment of the present application.

Description of reference numerals:
100. Electronic equipment;
10. frame; 11. limiting portion; 111. through slot; 12. second sound outlet;
20. Screen;
30. Acoustic component; 31. Shell; 311. First shell; 312. Second shell; 32. First diaphragm; 33. Second diaphragm; 34. First rear cavity; 35. Second rear cavity;
40. First front cavity;
50. First sound outlet;
60, second front cavity;
70. a first sealing member;
80. Second sealing member;
90. Back cover; 91. Main board; 92. Sub-board; 93. Battery; 94. Speaker;
x, first direction.

DETAILED DESCRIPTION

The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least part of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

In the description of the present application, it should be noted that, unless otherwise specified, "plurality" means more than two; the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of the present application. In the description of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

In order to solve the existing technical problems, the embodiment of the present application provides an electronic device 100 and an electronic device. In order to better understand the present application, the electronic device 100 of the embodiment of the present application is described in detail below in conjunction with Figures 1 to 7.

The following first introduces the electronic device provided in the embodiments of the present application.

Please refer to FIG. 1 to FIG. 3 , FIG. 1 is an electronic device according to an embodiment of the present application in a first volume scene FIG. 2 is a schematic diagram of the structure of an electronic device in a non-first volume scenario according to an embodiment of the present application; FIG. 3 is a schematic diagram of the structure of an acoustic component of an electronic device according to an embodiment of the present application.

As shown in FIGS. 1 to 3 , the present application provides an electronic device 100, comprising a frame 10, a screen 20 and an acoustic component 30. The screen 20 is disposed in the frame 10. The acoustic component 30 is connected to the frame 10, and the acoustic component 30 is located between the frame 10 and the screen 20. The acoustic component 30 comprises a shell 31, a first diaphragm 32 and a second diaphragm 33. The first diaphragm 32 and the second diaphragm 33 are disposed in the shell 31, and a first rear cavity 34 is provided between the first diaphragm 32 and the second diaphragm 33, wherein when the acoustic component 30 works in a speaker mode and the acoustic component 30 is in a first volume scene, the first diaphragm 32 moves relative to the second diaphragm 33 in a direction away from the second diaphragm 33.

The frame 10 is a peripheral component of the electronic device 100 , and the frame 10 is a basic installation component of the electronic device 100 . The frame 10 can provide an installation foundation and protection for components such as the screen 20 and the acoustic component 30 , and can also provide support for part of the screen 20 .

It should be noted that the shape, size and material of the frame 10 can be set according to actual needs. For example, the frame 10 can be circular, rectangular or triangular, etc., which is not limited here.

In the embodiment of the present application, the frame 10 can be an integral structure, for example, it can be integrally formed by compression molding, bending, cold pressing, etc. The frame 10 can also be a split structure, for example, including a first frame and a second frame, and the first frame and the second frame are spliced to form the frame 10.

The screen 20 can be used as a display component of the electronic device 100 to feed back some information of the electronic device 100 to the user, and the user can also operate through the screen 20 to input relevant information. The screen 20 is connected to the frame 10, for example, the screen 20 is bonded to the frame 10.

The acoustic component 30 is a device of the electronic device 100 that can emit sound. The acoustic component 30 is located between the frame 10 and the screen 20, and the acoustic component 30 is connected to the frame 10. Specifically, the acoustic component 30 can be connected to the frame 10 by bonding, connecting with a connector, plugging, snapping, etc. The acoustic component 30 includes a shell 31, a first diaphragm 32, and a second diaphragm 33. The shell 31 is the shell of the acoustic component 30. The first diaphragm 32 and the second diaphragm 33 are the sound generating parts of the acoustic component 30. The first diaphragm 32 and the second diaphragm 33 are arranged in the shell 31 and connected to the shell 31. The acoustic component 30 includes two sound waves, for example, a first sound wave and a second sound wave. The first sound wave comes from the sound wave generated by the vibration of the first diaphragm 32, and the second sound wave comes from the sound wave generated by the vibration of the second diaphragm 33. Specifically, the housing 31 includes a first sound cavity and a second sound cavity that are arranged relatively to each other. The first sound wave is output from the first sound cavity, and the second sound wave is output from the second sound cavity. The output direction of the first sound wave is different from the output direction of the second sound wave. Therefore, the acoustic component 30 achieves a two-way sound output effect, thereby realizing that the acoustic component 30 can work in different modes, such as a speaker mode, a receiver mode, etc.

In the embodiment of the present application, there is a first back cavity 34 between the first diaphragm 32 and the second diaphragm 33. As the electronic device 100 is miniaturized, the internal space layout of the electronic device 100 becomes more and more compact, and the volume of the total back cavity of the acoustic component 30 is limited by the internal space of the electronic device 100. The available space of the total back cavity of the acoustic component 30 is also becoming increasingly tight, and the volume of the total back cavity determines the sound performance of the acoustic component 30. The smaller the volume of the total back cavity, the poorer the sound performance of the electronic device 100, especially the low-frequency effect.

In the embodiment of the present application, the vibration of the first diaphragm 32 can form a first sound wave, and the vibration of the second diaphragm 33 can form a second sound wave. The vibration direction of the first diaphragm 32 and the vibration direction of the second diaphragm 33 can be the same or different. When the acoustic component 30 works in the receiver mode, at least one of the first diaphragm 32 and the second diaphragm 33 vibrates, so that the acoustic component 30 is in a different sound scene, that is, the first diaphragm 32 vibrates and forms a first sound wave, and the second diaphragm 33 vibrates and forms a second sound wave. The first sound wave and the second sound wave have the same phase. In this case, the first sound wave and the second sound wave with the same phase are respectively transmitted from the electronic device 100 and superimposed to achieve the purpose of enhancement, and finally realize the generation of a larger sound; or, the second diaphragm 33 vibrates and forms a second sound wave, and the first diaphragm 32 does not vibrate. At this time, only the second sound wave sounds. In this case, the generation of a smaller sound in the receiver mode is achieved.

In an embodiment of the present application, when the acoustic component 30 operates in the speaker mode and is in a first volume scene, the second diaphragm 33 vibrates normally and forms a second sound wave, and the first diaphragm 32 moves relative to the second diaphragm 33 in a direction away from the second diaphragm 33, so that the volume of the first rear cavity 34 between the first diaphragm 32 and the second diaphragm 33 is increased as a whole, thereby improving the sound performance and further improving the low-frequency effect of the electronic device 100.

In the embodiment of the present application, when the acoustic component 30 is in the first volume scene, the first diaphragm 32 moves in a direction away from the second diaphragm 33 with respect to the second diaphragm 33. A force, such as pressure or tension, may be applied to the second diaphragm 33 to make the second diaphragm 33 move in a direction away from the second diaphragm 33. A static magnetic field may also be applied to the second diaphragm 33 to make the second diaphragm 33 move in a direction away from the first diaphragm 33. Directional movement of the second diaphragm 33. The first volume scene of the present application is a low volume scene or a medium volume scene when working in the speaker mode. In addition, the acoustic component 30 can also be in other volume scenes, such as the second volume scene, the third volume scene, ..., etc., and the volume of each volume scene is different.

The electronic device 100 provided in the embodiment of the present application includes a frame 10, a screen 20 and an acoustic component 30, wherein the acoustic component 30 includes a shell 31, a first diaphragm 32 and a second diaphragm 33, wherein a first back cavity 34 is provided between the first diaphragm 32 and the second diaphragm 33, and when the acoustic component 30 operates in the speaker mode and the acoustic component 30 is in the first volume scene, the second diaphragm 33 can vibrate normally to make a sound, and the first diaphragm 32 moves relative to the second diaphragm 33 in a direction away from the second diaphragm 33, and the movement of the first diaphragm 32 increases the volume of the first back cavity 34 between the first diaphragm 32 and the second diaphragm 33, thereby increasing the volume of the total back cavity of the acoustic component 30, improving the sound performance of the acoustic component 30, and improving the low-frequency effect of the sound output, making the sound rounder and fuller. In addition, the increase in the total back cavity volume can also achieve the purpose of saving power and increase the service life of the electronic device 100.

In some optional embodiments, as shown in Figures 1 and 2, the first diaphragm 32 is arranged on the side of the shell 31 facing the screen 20, and the first diaphragm 32, the screen 20, the frame 10, and the shell 31 together form a first front cavity 40, wherein during the movement of the first diaphragm 32 in a direction away from the second diaphragm 33, the volume of the first front cavity 40 decreases.

In the embodiment of the present application, the first diaphragm 32 is disposed on the side of the housing 31 facing the screen 20. The first diaphragm 32, the screen 20, the frame 10, and the housing 31 enclose a first front cavity 40. The vibration of the first diaphragm 32 can form a first sound wave, which is transmitted to the outside of the electronic device 100 through the first front cavity 40, thereby achieving sound generation. The first diaphragm 32 moves relative to the second diaphragm 33 in a direction away from the second diaphragm 33. The movement of the first diaphragm 32 increases the volume of the first rear cavity 34 between the first diaphragm 32 and the second diaphragm 33, and reduces the volume of the first front cavity 40 enclosed by the first diaphragm 32, the screen 20, the frame 10, and the housing 31. It can be understood that the movement of the first diaphragm 32 changes the volume of both the first rear cavity 34 and the first front cavity 40.

In an embodiment of the present application, during the movement of the first diaphragm 32 , the difference in volume change of the first front cavity 40 is equal to the difference in volume change of the first rear cavity 34 , or the difference in volume change of the first front cavity 40 is greater than the difference in volume change of the first rear cavity 34 .

In the embodiment of the present application, the electronic device 100 is provided with a first sound outlet 50 and a second sound outlet The first sound outlet 12, the first sound outlet 50 and the second sound outlet 12 are both used for sound emission. Specifically, the first sound wave generated by the vibration of the first diaphragm 32 will propagate to the outside of the electronic device 100 through the first front cavity 40 and the first sound outlet in sequence. The second sound wave generated by the vibration of the second diaphragm 33 will propagate to the outside of the electronic device 100 through the second sound outlet. The first sound outlet 50 can be opened on the frame 10, and can also be opened at the connection between the frame 10 and the screen 20. The second sound outlet 12 can be opened on the frame 10, and can also be opened at the connection between the frame 10 and the screen 20.

In these optional embodiments, the first diaphragm 32 moves in a direction away from the second diaphragm 33 to increase the volume of the first rear cavity 34 and correspondingly reduce the volume of the first front cavity 40, so that the space inside the electronic device 100 is fully utilized, and the increase in the volume of the first rear cavity 34 does not lead to a change in the overall space of the electronic device 100, which is conducive to the miniaturization of the electronic device 100. In addition, when in the first volume scene, the second sound wave emitted by the vibration of the second diaphragm 33 is the dominant sound-generating component, so the change in the volume of the first front cavity 40 does not affect the normal sound of the acoustic component 30 in the first volume scene.

Referring to FIG. 4 and FIG. 5 in combination, FIG. 4 is a schematic diagram of the exploded view of the acoustic component of the electronic device according to the embodiment of the present application; and FIG. 5 is a schematic diagram of the structure of the frame of the electronic device according to the embodiment of the present application.

In some optional embodiments, as shown in Figures 1, 4 and 5, the frame 10 is provided with a limiting portion 11, the limiting portion 11 is arranged on a side of the frame 10 away from the screen 20, the shell 31 is connected to the limiting portion 11, the limiting portion 11 is provided with a through groove 111, the through groove 111 is connected to the first front cavity 40, and the through groove 111 can avoid the first diaphragm 32.

Exemplarily, the frame 10 is provided with a limiting portion 11, which is arranged on a side of the frame 10 away from the screen 20. Specifically, the limiting portion 11 can be a groove that is recessed inward on one side of the frame 10, and the shell 31 partially extends into the groove. A part of the shell 31 is cooperated with the shell 31, so that the shell 31 and the limiting portion 11 form a mosaic structure. The mosaic structure can play a positioning role and simplify the assembly process of the shell 31 and the limiting portion 11. At the same time, the mosaic structure can also increase the connection area and increase the stability of the contact.

Optionally, one of the limiting portion 11 and the housing 31 may be provided with a positioning groove, and the other may be provided with a positioning boss, and the positioning groove and the positioning boss are positioned and matched. This arrangement can increase the connection stability between the frame 10 and the acoustic component 30.

In these optional embodiments, there is a first rear portion between the first diaphragm 32 and the second diaphragm 33. The first rear cavity 34 is additionally provided without adding any new components, so that the acoustic assembly 30 occupies a smaller space. In the process of increasing the volume of the first rear cavity 34, the through groove 111 can prevent the first diaphragm 32 from moving, and the limiting portion 11 forms a barrier with other components, thereby reducing the impact on other components, thereby improving the user experience.

In some optional embodiments, when the acoustic component 30 is in a first volume scene, the first diaphragm 32 is located in a DC magnetic field or a DC electric field, and the first diaphragm 32 moves in the through slot 111 in a direction away from the second diaphragm 33 to a preset position.

In an embodiment of the present application, by applying a DC magnetic field or a DC electric field, the first diaphragm 32 moves in a direction away from the second diaphragm 33. When the DC magnetic field or the DC electric field disappears, that is, when the acoustic component 30 is in a non-first volume scenario, the first diaphragm 32 can return to its initial state.

Exemplarily, a DC magnetic field or a DC electric field is applied to place the acoustic component 30 in a first volume scenario, and the first diaphragm 32 moves from an initial position in a direction away from the second diaphragm 33. When the first diaphragm 32 moves to a preset position, a DC magnetic field or a DC electric field is continuously input, and the first diaphragm 32 is maintained in this preset position. When no DC magnetic field or DC electric field is applied, that is, when the acoustic component 30 is not in the first volume scenario, the first diaphragm 32 returns to its initial position, and therefore does not affect the acoustic component 30 in other volume scenarios or other working modes.

Optionally, the preset position is a maximum position of movement of the first diaphragm 32 .

In some embodiments of the present application, a DC signal is applied to the first diaphragm 32 through a driving chip, the first diaphragm 32 is located in a DC magnetic field, and the first diaphragm 32 moves in a direction away from the first diaphragm 32. The maximum movement distance of the first diaphragm 32 is X mm. Since the movement of the first diaphragm 32 increases the volume of the first rear cavity 34, the movement of the first diaphragm 32 in a direction away from the first diaphragm 32 is equivalent to an increase in the volume of the first rear cavity 34 by a volume V, as shown in formula (1):
V＝L*Y*X， (1)

Wherein, V is the increased volume of the first rear cavity 34 , L is the length of the first diaphragm 32 , Y is the width of the first diaphragm 32 , and X is the maximum movement distance of the first diaphragm 32 .

In these optional embodiments, a DC magnetic field or a DC electric field is applied to cause the first diaphragm 32 to move in a direction away from the second diaphragm 33. Therefore, the acoustic component 30 can be placed in different volume scenes simply by having one diaphragm be in different magnetic fields, which has the advantages of simple, convenient, and efficient control.

In some optional embodiments, a gap between the screen 20 and the frame 10 forms a first sound outlet 50 , and the first sound outlet 50 is connected to the first front cavity 40 .

In the embodiment of the present application, the opening shape of the first sound outlet 50 is rectangular, circular, trapezoidal, etc.

In these optional embodiments, there is a gap between the screen 20 and the frame 10, and the gap can be used as the first sound outlet 50. In this way, the assembly gap is used as the first sound outlet 50, which can make full use of the existing structure of the electronic device 100, and there is no need to open the first sound outlet 50 on the frame 10. In addition, the assembly gap is usually small in size, and using the assembly gap as the first sound outlet 50 can reduce the intrusion of foreign matter into the interior of the electronic device 100.

Please refer to FIG6 , which is a partial structural diagram of an electronic device according to an embodiment of the present application.

In some optional embodiments, as shown in FIG1 and FIG6 , the frame 10 is provided with a second sound outlet 12 . The second diaphragm 33 and the first diaphragm 32 are spaced apart and arranged opposite to each other, and the second diaphragm 33 , the frame 10 , and the housing 31 enclose a second front cavity 60 , which is communicated with the second sound outlet 12 .

In the embodiment of the present application, the second diaphragm 33 and the first diaphragm 32 are spaced apart and arranged opposite to each other, and the second diaphragm 33 and the first diaphragm 32 have consistent vibration directions.

In the embodiment of the present application, the second sound wave emitted by the vibration of the second diaphragm 33 is propagated to the outside of the electronic device 100 through the second front cavity 60 and the second sound outlet 12 in sequence.

In some optional embodiments, as shown in FIG. 3 and FIG. 4 , the housing 31 includes a first housing 311 and a second housing 312. The first housing 311 is connected to the limiting portion 11, and the first housing 311 is connected to the first diaphragm 32. The first diaphragm 32, the screen 20, the frame 10, and the first housing 311 enclose a first front cavity 40. The second housing 312 is connected to the first housing 311, and the second housing 312 is connected to the second diaphragm 33. The second diaphragm 33, the frame 10, and the second housing 312 enclose a second front cavity 60.

In an embodiment of the present application, the shell 31 includes a first shell 311 and a second shell 312, the first shell 311 has a first sound cavity, the first diaphragm 32 is arranged in the first sound cavity and connected to the first diaphragm 32, the second shell 312 has a second sound cavity, the second diaphragm 33 is arranged in the second sound cavity and connected to the second diaphragm 33, the second shell 312 is connected to the first shell 311, and the second diaphragm 33 is spaced apart from the first diaphragm 32.

Optionally, the acoustic component 30 includes a first housing 311, a second housing 312, a first diaphragm 32 The first diaphragm 32 and the second diaphragm 33 form a double diaphragm sound output component. The double diaphragm sound output component is first installed on the first shell 311, and then the first shell 311 and the second shell 312 are sealed and connected by ultrasonic sealing.

In these optional embodiments, the housing 31 is a split structure, which includes a first housing 311 and a second housing 312. The first housing 311, the first diaphragm 32, the screen 20, and the frame 10 form a first front cavity 40, and the second housing 312, the second diaphragm 33, and the frame 10 form a second front cavity 60, so that the acoustic component 30 can output sound in both directions, which facilitates the acoustic component 30 to switch between the receiver mode and the speaker mode. Moreover, the split structure design is conducive to the assembly of the acoustic component 30.

In some optional embodiments, as shown in FIG. 3 and FIG. 4 , the first shell 311 , the second shell 312 , the first diaphragm 32 , and the second diaphragm 33 form a second rear cavity 35 , and the second rear cavity 35 is connected to the first rear cavity 34 .

In the embodiment of the present application, the second diaphragm 33 and the first diaphragm 32 are spaced apart and arranged opposite to each other, a first rear cavity 34 is provided between the second diaphragm 33 and the first diaphragm 32, and the first housing 311, the second housing 312, the second diaphragm 33 and the first diaphragm 32 form a second rear cavity 35. The second rear cavity 35 is connected to the first rear cavity 34.

Optionally, the second rear cavity 35 is the total rear cavity of the acoustic component 30. During the movement of the first diaphragm 32 relative to the second diaphragm 33 in a direction away from the second diaphragm 33, the gap between the second diaphragm 33 and the first diaphragm 32 increases, and therefore, during the movement of the second diaphragm 33, the volume of the first rear cavity 34 between the second diaphragm 33 and the first diaphragm 32 is mainly increased, thereby increasing the volume of the second rear cavity 35.

In these optional embodiments, such a configuration can reduce changes in the overall structure of the acoustic component 30 and reduce the overall space occupied by the acoustic component 30.

In some optional embodiments, as shown in FIG1 , the second housing 312 is provided with an end surface extending toward the second sound outlet 12, and the end surface abuts against the frame 10. The electronic device 100 further includes a first seal 70 and a second seal 80, wherein the first seal 70 is arranged around the limiting portion 11, the first seal 70 is located between the first housing 311 and the limiting portion 11, and the second seal 80 is located between the end surface and the frame 10.

In the embodiment of the present application, the first sealing member 70 is selected from one of double-sided tape, foam or silicone.

In the embodiment of the present application, the second sealing member 80 is selected from one of double-sided tape, foam or silicone.

In these optional embodiments, the first front cavity 40, the second front cavity 60 and other inner cavities in the electronic device 100 are sealed and isolated by the first seal 70 and the second seal 80. Moreover, the first seal 70 is located between the first shell 311 and the limiting portion 11, so that the first seal 70 is arranged close to the first diaphragm 32, and the second seal 80 is located between the end surface of the second shell 312 and the frame body 10, so that the second seal 80 is arranged close to the second diaphragm 33. Therefore, the first diaphragm 32 and the second diaphragm 33 can be shock-absorbing.

In some optional embodiments, when the acoustic component 30 operates in the speaker mode and is in the second volume scene, the first sound wave formed by the vibration of the first diaphragm 32 and the second sound wave formed by the vibration of the second diaphragm 33 are in the same phase, and the volume of the second volume scene is greater than the volume of the first volume scene.

Specifically, the acoustic component 30 includes two sound waves, such as a first sound wave and a second sound wave, wherein the first sound wave comes from the sound wave generated by the vibration of the first diaphragm 32, and the second sound wave comes from the sound wave generated by the vibration of the second diaphragm 33. The first diaphragm 32 vibrates and forms a first sound wave, which is transmitted from the first sound outlet 50 through the first front cavity 40. The second diaphragm 33 vibrates and forms a second sound wave, which is transmitted from the second sound outlet 12 through the second front cavity 60. The first sound wave and the second sound wave have the same phase and are superimposed on each other, thereby realizing the second volume scene, that is, the high-pitched scene, in the speaker mode. The second diaphragm 33 vibrates and forms a second sound wave, which is transmitted from the second sound outlet 12 through the second front cavity 60, and the first diaphragm 32 does not vibrate. At this time, only the second sound wave sounds, thereby realizing the first volume scene, that is, the mid-bass scene, in the speaker mode. Therefore, the volume of the second volume scene is greater than the volume of the first volume scene.

In these optional embodiments, when the acoustic component 30 operates in the speaker mode and is in the second volume scene, the first sound wave formed by the vibration of the first diaphragm 32 and the second sound wave formed by the second diaphragm 33 have the same phase, and the first sound wave and the second sound wave with the same phase are superimposed on each other to achieve volume enhancement. Therefore, the volume of the second volume scene is greater than the volume of the first volume scene.

In some optional embodiments, when the acoustic assembly 30 works in the receiver mode, the phase difference between the first sound wave formed by the vibration of the first diaphragm 32 and the second sound wave formed by the vibration of the second diaphragm 33 is The opposite position.

Specifically, the acoustic component 30 includes two sound waves, such as a first sound wave and a second sound wave, wherein the first sound wave comes from the sound wave generated by the vibration of the first diaphragm 32, and the second sound wave comes from the sound wave generated by the vibration of the second diaphragm 33. The first diaphragm 32 vibrates and forms a first sound wave, which is transmitted from the first sound outlet 50 through the first front cavity 40. The second diaphragm 33 vibrates and forms a second sound wave, which is transmitted from the second sound outlet 12 through the second front cavity 60. When the acoustic component 30 works in the receiver mode, the first sound wave formed by the vibration of the first diaphragm 32 and the second sound wave formed by the second diaphragm 33 have opposite phases, resulting in the first sound wave and the second sound wave canceling each other, causing the sound to short-circuit, thereby achieving a smaller volume output by the acoustic component 30, so that the sound of the user answering the call at a close distance and the content of the call are not easily heard by other people far away, thereby solving the problem of sound leakage and better protecting the privacy of the call.

Please refer to FIG. 7 , which is an exploded schematic diagram of an electronic device according to an embodiment of the present application.

In some optional embodiments, as shown in FIG. 1 and FIG. 7 , the electronic device 100 further includes a back cover 90 , which covers the frame 10 , and the back cover and the frame 10 form a receiving cavity, and at least part of the acoustic component 30 is disposed in the receiving cavity.

In some optional embodiments, the electronic device 100 also includes a main board 91 and a sub-board 92, which are arranged between the back cover and the frame 10, and the main board 91 and the sub-board 92 are arranged along a first direction x, and the first direction x is perpendicular to the thickness direction of the electronic device 100. The battery 93 can be connected to the main board, and the battery is arranged between the main board 91 and the sub-board 92. A speaker 94 is provided between the sub-board 92 and the back cover 90, and the sound emission directions of the speaker 94 and the acoustic component 30 can be the same or different.

In the embodiments of the present application, the electronic device may be a mobile phone, a tablet computer, a laptop computer, a PDA, a vehicle-mounted electronic device, a wearable device, an ultra-mobile personal computer (UMPC), a netbook, or a personal digital assistant (PDA), etc.

Other structures and operations of the electronic device according to the embodiments of the present application are known to those skilled in the art and will not be described in detail here.

Other configurations and operations of the electronic device according to the embodiments of the present application are well known to those skilled in the art and will not be described in detail herein. In the description of this specification, reference will be made to the terms “one embodiment”, “some embodiments”, “exemplary”, “in the embodiments of the present application”, and “in the embodiments of the present application”. The description of "includes" or "includes" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

An electronic device, comprising:

Frame;

A screen, wherein the screen is arranged on the frame;

an acoustic component, wherein the acoustic component is connected to the frame and is located between the frame and the screen, the acoustic component comprises a shell, a first diaphragm and a second diaphragm, the first diaphragm and the second diaphragm are arranged in the shell, and a first back cavity is provided between the first diaphragm and the second diaphragm,

Wherein, when the acoustic component operates in a speaker mode and is in a first volume scene, the first diaphragm moves relative to the second diaphragm in a direction away from the second diaphragm.
The electronic device according to claim 1, wherein:

The first diaphragm is disposed on a side of the housing facing the screen, and the first diaphragm, the screen, the frame, and the housing together form a first front cavity.

In which, when the first diaphragm moves in a direction away from the second diaphragm, the volume of the first front cavity decreases.
The electronic device according to claim 2, wherein:

The frame is provided with a limiting part, which is arranged on a side of the frame away from the screen, the shell is connected to the limiting part, the limiting part is provided with a through groove, the through groove is connected to the first front cavity, and the through groove can avoid the first diaphragm.
The electronic device according to claim 3, wherein:

When the acoustic component is in a first volume scene, the first diaphragm is located in a DC magnetic field or a DC electric field, and the first diaphragm moves in the through slot in a direction away from the second diaphragm to a preset position.
The electronic device according to claim 4, wherein:

A gap between the screen and the frame forms a first sound outlet, and the first sound outlet is communicated with the first front cavity.
The electronic device according to claim 3, wherein:

The frame is provided with a second sound outlet;

The second diaphragm and the first diaphragm are spaced apart and arranged opposite to each other. The second diaphragm, the frame and the shell together form a second front cavity. The second front cavity is communicated with the second sound outlet.
The electronic device according to claim 6, wherein the housing comprises:

A first shell, wherein the first shell is connected to the limiting portion, and the first shell is connected to the first diaphragm, and the first diaphragm, the screen, the frame, and the first shell are enclosed to form a first front cavity;

The second shell is connected to the first shell, and the second shell is connected to the second diaphragm. The second diaphragm, the frame and the second shell are enclosed to form a second front cavity.
The electronic device according to claim 7, wherein:

The first shell, the second shell, the first diaphragm and the second diaphragm form a second rear cavity, and the second rear cavity is communicated with the first rear cavity.
The electronic device according to claim 7, wherein:

The second shell is provided with an end surface extending toward the second sound outlet, and the end surface abuts against the frame body.

The electronic device further comprises a first sealing member and a second sealing member, wherein the first sealing member is arranged around the limiting portion and is located between the first housing and the limiting portion, and the second sealing member is located between the end surface and the frame.
The electronic device according to claim 1, wherein:

When the acoustic component operates in the speaker mode and is in a second volume scene, the first sound wave formed by the vibration of the first diaphragm and the second sound wave formed by the vibration of the second diaphragm are in phase with each other, and the volume of the second volume scene is greater than the volume of the first volume scene.
The electronic device according to claim 1, wherein:

When the acoustic component operates in a receiver mode, a first sound wave formed by the vibration of the first diaphragm and a second sound wave formed by the vibration of the second diaphragm are in opposite phases.