Electronic device

Abstract

The embodiment of the utility model provides electronic equipment, and belongs to the technical field of electronic equipment. The electronic equipment comprises a first cavity, a first opening, a shell assembly, a loudspeaker single body and a passive vibration part. Wherein the shell assembly is provided with a second opening, the passive vibration piece is fixedly connected to the shell assembly, the loudspeaker monomer is located in the first cavity and divides the first cavity into a second cavity and a third cavity, the second cavity is communicated with the external space of the electronic equipment through the first opening, and the third cavity is communicated with the external space of the electronic equipment through the second opening. And the third cavity is communicated with the external space of the electronic equipment through the second opening. The passive vibration piece is used as a secondary sound source, so that the loudness can be improved.

Description

Technical Field

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

[0002] A loudspeaker is an electronic device that converts electrical signals into sound signals, widely used in electronic devices such as mobile phones, tablets, and laptops. In related technologies, a loudspeaker includes a vibration system and a magnetic circuit system. The vibration system consists of a voice coil and a diaphragm connected together. The magnetic field generated by the magnetic circuit system interacts with the magnetic field generated by the voice coil when it is energized, causing the voice coil to vibrate up and down, which in turn drives the diaphragm to vibrate and produce sound. However, loudspeakers in this technology suffer from low loudness. Utility Model Content

[0003] This application provides an electronic device that can solve the problem of low loudness of speakers in the prior art.

[0004] This application provides an electronic device including a first cavity, a first opening, a housing assembly, a speaker unit, and a passive vibrating element. The housing assembly has a second opening, the passive vibrating element is fixedly connected to the housing assembly, the speaker unit is located inside the first cavity and divides the first cavity into a second cavity and a third cavity, the second cavity communicates with the external space of the electronic device through the first opening, and the third cavity communicates with the external space of the electronic device through the second opening.

[0005] When the electronic device provided in this application embodiment is working, the speaker unit generates a first sound wave that propagates to the second cavity and a second sound wave that propagates to the third cavity. The first sound wave enters the external space of the electronic device through the first opening. The second sound wave in the third cavity propagates to the passive vibrating element. The passive vibrating element vibrates under the drive of the second sound wave and generates a third sound wave. The third sound wave is in phase with the first sound wave. The first sound wave and the third sound wave can be superimposed on each other in the far field, which can increase the loudness.

[0006] In some possible implementations, in the frequency range of 20Hz to 500Hz, the third sound wave generated by the passive vibrating element is in phase with the first sound wave generated by the loudspeaker unit.

[0007] In this way, the first and third sound waves in the external space of the electronic device superimpose each other in the far field, which can improve the loudness of the speaker unit in the frequency range of 20Hz to 500Hz, and improve the frequency response of the speaker unit in the frequency range of 20Hz to 500Hz, thus solving the problem of insufficient loudness of the speaker unit in this frequency range.

[0008] In some possible implementations, the passive vibrator is located inside the third cavity.

[0009] In this way, by accommodating the passive vibration component in the third cavity, the influence of the passive vibration component on the appearance of the electronic device is avoided, which helps to improve the aesthetics of the electronic device.

[0010] In some possible implementation manners, the electronic device satisfies the relational expression: 0mm < H < 800mm, where H is the effective distance that the sound wave generated by the speaker unit travels from the speaker unit to the passive vibration component.

[0011] In this way, it is easy for the frequency of the third sound wave generated by the passive vibration component to fall within the desired range, and the difficulty of superimposing the first sound wave and the third sound wave can be reduced.

[0012] In some possible implementation manners, the compliance of the passive vibration component is greater than or equal to 1 and less than or equal to 30.

[0013] In this way, the passive vibration component has good flexibility, and it is easy for the passive vibration component to vibrate under the drive of the second sound wave, reducing the difficulty of the passive vibration component vibrating.

[0014] In some possible implementation manners, the passive vibration component includes a vibratable passive film.

[0015] In this way, the structure of the passive vibration component can be simplified, and the cost of the passive vibration component can be reduced.

[0016] In some possible implementation manners, the passive vibration component further includes a passive dome, and the passive dome is fixedly connected to the middle of the passive film.

[0017] In this way, the active dome can be understood as a mass block, which can be used to increase the weight of the passive vibration component, thereby adjusting the frequency of the third sound wave emitted by the passive vibration component.

[0018] In some possible implementation manners, the housing assembly includes a battery cover and a camera decorative piece. Among them, at least part of the camera decorative piece is located outside the battery cover, and the second opening is provided on the side wall of the camera decorative piece.

[0019] In this way, the second opening is prevented from having a great influence on the overall appearance of the machine, which helps to ensure the aesthetics of the whole machine.

[0020] In some possible implementation manners, the electronic device includes a first speaker unit and a second speaker unit. The first speaker unit and the second speaker unit are arranged at intervals along the length direction of the electronic device, and the first speaker unit and the second speaker unit are arranged at intervals along the width direction of the electronic device. Along the length direction of the electronic device, the passive vibration component is located between the first speaker unit and the second speaker unit.

[0021] Thus, the arrangement of the first and second speaker units is asymmetrical, and this asymmetry in their physical positions causes a sound field shift, preventing the sound heard by the user from being concentrated in the center of the screen (i.e., the middle of the virtual sound field). In this embodiment, the passive vibrating element vibrates under the drive of the second sound wave from the first speaker unit and generates a third sound wave. The third sound wave is in phase with the first sound wave from the first speaker unit. The third sound wave generated by the passive vibrating element and the first sound wave from the first speaker unit superimpose in the far field, which can improve the low-frequency performance of the first speaker unit. Therefore, it is not necessary to center the sound phase by limiting the low-frequency performance of the second speaker unit, thereby improving the stereo effect.

[0022] In some possible implementations, the passive vibrator is located inside the camera trim and is fixedly connected to the camera trim, while the passive vibrator is located outside the battery cover.

[0023] By placing the passive vibration component inside the camera trim and outside the battery cover, the internal space of the electronic device is avoided, thus reducing the difficulty of layout of the internal components.

[0024] In some possible implementations, the loudspeaker unit includes a resonant assembly and a magnetic circuit assembly. The resonant assembly includes an active vibrator and a voice coil, with the voice coil connected to the active vibrator and used to drive the active vibrator to vibrate. The magnetic field generated by the magnetic circuit assembly and the magnetic field generated by the voice coil work together to drive the voice coil in reciprocating motion.

[0025] In this way, the speaker unit can generate the first and second sound waves according to the audio signal to achieve the playback function.

[0026] In some possible implementations, the electronic device is a mobile phone, tablet, or smartwatch. Attached Figure Description

[0027] Figure 1 A three-dimensional structural schematic diagram of the first electronic device provided in the embodiments of this application;

[0028] Figure 2 for Figure 1 A top view of the electronic device shown;

[0029] Figure 3 for Figure 2 A cross-sectional view along the CC direction in the diagram;

[0030] Figure 4 A top view schematic diagram of a second electronic device provided in the application embodiment;

[0031] Figure 5A top view schematic diagram of a third electronic device provided in the application embodiment;

[0032] Figure 6 A top view schematic diagram of a fourth type of electronic device provided in the application embodiment;

[0033] Figure 7 for Figure 6 An exploded schematic diagram of the electronic device shown.

[0034] Figure 8 for Figure 6 A schematic diagram of the right side of the electronic device shown;

[0035] Figure 9 for Figure 8 A schematic diagram at point F in the middle;

[0036] Figure 10 for Figure 6 A schematic diagram of the left side of the electronic device shown;

[0037] Figure 11 for Figure 10 A schematic diagram at point E in the middle;

[0038] Figure 12 for Figure 6 Cross-sectional view along the AA direction;

[0039] Figure 13 for Figure 12 A schematic diagram at point D in the middle;

[0040] Figure 14 for Figure 12 Cross-sectional view along the middle BB direction;

[0041] Figure 15 for Figure 12 A schematic diagram of the sound waves emitted by the electronic device shown.

[0042] Figure 16 This is a top view schematic diagram of a fifth electronic device provided in the application embodiment.

[0043] Explanation of reference numerals in the attached figures:

[0044] 110. Third Channel;

[0045] 120. Second Channel;

[0046] 130. The first opening;

[0047] 140. The second opening;

[0048] 150. Battery cover;

[0049] 160. Mid-frame;

[0050] 170. Display screen;

[0051] 180. Camera decorative parts;

[0052] 181. Bracket; 182. Adhesive layer; 183. Light-transmitting plate; 184. Dispensing layer; 185. First through hole;

[0053] 190. Adhesive backing;

[0054] 200. Speaker unit;

[0055] 200a, First loudspeaker unit; 200b, Second loudspeaker unit;

[0056] 220. Speaker unit;

[0057] 300. Passive vibration components;

[0058] 400. Enclosure components;

[0059] 600. First cavity;

[0060] 610. Second cavity;

[0061] 620. The third cavity;

[0062] 621. First sub-cavity; 622. Second sub-cavity;

[0063] X: length direction; Y: width direction; Z: thickness direction. Detailed Implementation

[0064] The terminology used in the implementation section of this application is for the purpose of explaining specific embodiments of this application only, and is not intended to limit this application.

[0065] This application provides an electronic device, which can be a mobile phone, tablet computer, laptop computer, wearable device, e-reader, multimedia player, or other device with sound playback function. Wearable devices can include smart bracelets, smartwatches, smart headsets, smart glasses, etc.

[0066] To more conveniently illustrate the electronic devices provided in the embodiments of this application, and as an example rather than a limitation, the following uses a mobile phone as an example to illustrate the technical solutions of this application in detail.

[0067] Figure 1 This is a three-dimensional structural diagram of the first type of electronic device provided in the embodiments of this application. Figure 2 for Figure 1 The diagram shows a top view of the electronic device. Figure 3 for Figure 2 A cross-sectional view along the CC direction.

[0068] like Figure 3 As shown, the electronic device includes a first opening 130, a housing assembly, a first cavity 600, a speaker unit 200, a display screen 170, and a passive vibrator 300. The passive vibrator 300 is fixedly connected to the housing assembly, which includes a second opening 140, a battery cover 150, a mid-frame 160, and a camera trim 180. The display screen 170 and battery cover 150 are located on opposite sides of the mid-frame 160 and are fixedly connected to it. At least a portion of the camera trim 180 is located outside the battery cover 150 and is fixedly connected to it. The mid-frame 160, display screen 170, and battery cover 150 together define a receiving space for the electronic device, which is used to install various functional components of the electronic device, such as the speaker unit 220 of the speaker unit 200, a battery, a microphone, a motherboard, and a camera module.

[0069] It should be noted that, in addition to structural components such as the battery cover 150, the mid-frame 160, and the camera trim 180, the housing assembly may also include other structural components. For example, the housing assembly may also include the enclosure 400. Furthermore, the housing assembly can also be understood as comprising at least some of the parts of an electronic device other than the display screen 170.

[0070] The mid-frame 160 provides mechanical support and protection for the entire electronic device. The mid-frame 160 is made of a material with sufficient hardness, such as stainless steel, ceramic, titanium alloy, aluminum alloy, copper alloy, or hard plastic.

[0071] The battery cover 150, also known as the back cover, can be made of materials such as stainless steel, titanium alloy, glass, ceramic, aluminum alloy, copper alloy, or plastic. The battery cover 150 can be fixedly connected to the mid-frame 160 via threaded connection, snap-fit, or adhesive bonding. Of course, in some embodiments, the battery cover 150 can also be integrally formed with the mid-frame 160 to improve the structural stability of the electronic device.

[0072] The battery cover 150 is provided with a first through hole 185 (e.g. Figure 14 As shown), the first through-hole 185 is positioned opposite the camera module along the thickness direction of the electronic device to ensure that light from outside the electronic device passes through the battery cover 150 and enters the lens of the camera module. The number of first through-holes 185 can be one or more; for example, the number of first through-holes 185 can be two (e.g., ...). Figure 14 (As shown).

[0073] In this embodiment of the application, the first opening 130 is connected to the external space of the electronic device and to the first cavity 600. The first opening 130 can diffuse the sound inside the first cavity 600 to the external space of the electronic device, thereby realizing external sound playback.

[0074] In this embodiment of the application, the second opening 140 is connected to the external space of the electronic device and to the first cavity 600. The second opening 140 can diffuse the sound in the first cavity 600 to the external space of the electronic device, thereby realizing sound playback.

[0075] The speaker unit 200 includes a speaker unit 220 located inside the first cavity 600. The speaker unit 220 divides the first cavity 600 into a second cavity 610 and a third cavity 620. The second cavity 610 is connected to the first opening 130 and is connected to the external space of the electronic device through the first opening 130. The third cavity 620 is connected to the second opening 140 and is connected to the external space of the electronic device through the second opening 140.

[0076] When the speaker unit 200 is operating, the speaker driver 220 generates a first sound wave that propagates into the second cavity 610. The first sound wave propagates through the first opening 130 to the external space of the electronic device, thus amplifying the sound. The speaker driver 220 also generates a second sound wave that propagates into the third cavity 620. The second sound wave propagates to the passive vibrator 300, which vibrates under the drive of the second sound wave and generates a third sound wave. This allows the passive vibrator 300 to function as a secondary sound source. The third sound wave generated by the secondary sound source is in phase with the first sound wave emitted through the first opening 130. The third sound wave and the first sound wave can superimpose in the far field to increase the loudness of the speaker unit 200. In addition, the second sound wave driving the passive vibrator 300 to vibrate can also mitigate the shell vibration problem caused when the second sound wave enters the rear cavity 212 of the electronic device.

[0077] It is understandable that the passive vibrator 300 vibrates due to the second sound wave, and functionally acts as a secondary sound source. Additionally, the passive vibrator 300 can also be referred to as a passive radiator (PR) or a PR disc, etc.

[0078] Understandably, loudness is defined as the intensity of sound as subjectively perceived by the human ear.

[0079] In some possible implementations, in the frequency range of 20Hz to 500Hz, the third sound wave generated by the passive vibrator 300 is in phase with the first sound wave generated by the loudspeaker unit 220.

[0080] In this way, the first and third sound waves in the external space of the electronic device superimpose each other in the far field, which can improve the loudness of the speaker unit 220 in the frequency range of 20Hz to 500Hz, and improve the frequency response of the speaker unit 220 in the frequency range of 20Hz to 500Hz, thus solving the problem of insufficient loudness of the speaker unit 220 in this frequency range.

[0081] In some possible implementations, the passive vibrator 300 may be located outside the third cavity 620, and the passive vibrator 300 and the orthographic projection of the second opening 140 in the projection plane at least partially overlap. In this way, the passive vibrator 300 is exposed to the external space of the electronic device, and the second sound wave inside the third cavity 620 propagates to the passive vibrator 300 through the second opening 140, causing the passive vibrator 300 to vibrate to generate the third sound wave.

[0082] The projection plane is a plane perpendicular to the center line of the second opening 140.

[0083] When the passive vibrator 300 is located outside the third cavity 620, the passive vibrator 300 may be located at least partially inside the second opening 140, or the passive vibrator 300 may be located outside the second opening 140.

[0084] In some possible implementations, the passive vibrator 300 may also be located inside the third cavity 620.

[0085] In this way, by housing the passive vibrating component 300 in the third cavity 620, the passive vibrating component 300 is prevented from affecting the appearance of the electronic device, which helps to improve the aesthetics of the electronic device.

[0086] Specifically, when the passive vibrator 300 is located inside the third cavity 620, it divides the third cavity 620 into a first sub-cavity 621 and a second sub-cavity 622. The first sub-cavity 621 is connected to the second opening 140 and is connected to the external space of the electronic device through the second opening 140. The passive vibrator 300 vibrates under the drive of a second sound wave in the second sub-cavity 622 and generates a third sound wave. The phase of the third sound wave is the same as the phase of the first sound wave emanating from the first opening 130. The third sound wave propagates sequentially through the first sub-cavity 621 and the second opening 140 to the external space of the electronic device and superimposes with the first sound wave emanating from the first opening 130 in the far field.

[0087] When the speaker unit 220 is working, it generates a first sound wave and a second sound wave. The first sound wave propagates sequentially to the external space of the electronic device through the second cavity 610 and the first opening 130. The second sound wave propagates to the passive vibrating element 300 through the second sub-cavity 622. The passive vibrating element 300 vibrates under the drive of the second sound wave and generates a third sound wave, so that the passive vibrating element 300 functions as a secondary sound source. The third sound wave generated by the secondary sound source propagates sequentially to the external space of the electronic device through the first sub-cavity 621 and the second opening 140. The third sound wave is in phase with the first sound wave, and the third sound wave and the first sound wave superimpose each other in the far field.

[0088] Figure 4 This is a top view schematic diagram of a second electronic device provided in the application embodiment.

[0089] In this embodiment, the shape of the passive vibrating element 300 is not specifically limited. For example, as shown... Figure 2 As shown, the passive vibrating element 300 can be rectangular in shape, but it can also be a regular shape such as a circle or a regular pentagon. Alternatively, the passive vibrating element 300 can also be an irregular shape (such as...). Figure 4 (As shown).

[0090] Figure 5 This is a top view schematic diagram of a third electronic device provided in the application embodiment.

[0091] The number of passive vibrating elements 300 can be one or more, for example Figure 5 As shown, there can be two passive vibrating elements 300. When there are multiple passive vibrating elements 300, the shapes of the multiple passive vibrating elements 300 can be the same or different (e.g., Figure 5 As shown), and / or, the structures of multiple passive vibrating elements 300 may be the same or different.

[0092] In some possible implementations, the passive vibrator 300 includes a vibrating passive diaphragm that vibrates under the influence of a second sound wave when the loudspeaker unit 200 is activated, thereby generating a third sound wave radiated to the outside. Driving the passive diaphragm to vibrate via the second sound wave simplifies the structure of the passive vibrator 300 and reduces its cost.

[0093] For example, the passive diaphragm can be a passive diaphragm, also known as a passive vibrating diaphragm. In this way, using a passive diaphragm as the passive diaphragm can further reduce the cost of the passive diaphragm.

[0094] The passive diaphragm can be one of the following: paper cone diaphragm, plastic diaphragm, metal diaphragm, and synthetic fiber diaphragm.

[0095] It should be noted that in addition to being composed of a passive diaphragm, in some embodiments, the passive diaphragm may further include a flexible film and a steel ring. The steel ring is close to the edge of the flexible film and is fixedly connected to the flexible film.

[0096] Of course, in addition to being composed of a passive membrane, the passive vibrating member 300 may further include other components. For example, the passive vibrating member 300 may further include a passive dome, and the passive dome is fixedly connected to the middle of the passive membrane. The active dome can be understood as a mass block, which can be used to increase the weight of the passive vibrating member 300, thereby adjusting the frequency of the sound emitted by the passive vibrating member 300.

[0097] In some possible implementation manners, the electronic device satisfies the relational expression: 0mm < H < 800mm, where H is the effective distance that the sound wave generated by the speaker unit 220 propagates from the speaker unit 220 to the passive vibrating member 300. In this way, it is easy for the frequency of the third sound wave to fall within the target range, and the difficulty of superimposing the third sound wave and the first sound wave can be reduced.

[0098] Among them, the specific value of H can be 10mm, 50mm, 100mm, 200mm, 300mm, etc.

[0099] Of course, in addition to being less than 800mm, the value of H can also be greater than 800mm. For example, the value of H can also be 810mm, 900mm, 1000mm, etc.

[0100] In some possible implementation manners, the second sub-cavity 622 satisfies the relational expression: 1cc < V B < 80cc, where V B is the volume of the second sub-cavity 622. In this way, the speaker unit 220 can adopt a speaker unit in the prior art, without re-designing the speaker unit 220, which can reduce the development cost of the speaker unit 220 and the cost of the electronic device.

[0101] Among them, the volume of the second sub-cavity 622 can be 2cc, 4cc, 10cc, 20cc, 30cc, 40cc, 50cc, 60cc, 70cc, etc.

[0102] Of course, in addition to being less than 80cc, in some scenarios, the volume of the second sub-cavity 622 can also be greater than 80cc. Implementing a large-volume second sub-cavity 622 design helps to further increase the low-frequency performance of the electronic device.

[0103] In some possible implementations, the compliance of the passive vibrating element 300 is greater than or equal to 1 and less than or equal to 30. Thus, the passive vibrating element 300 has good flexibility and can easily vibrate under the drive of the second sound wave, reducing the difficulty of vibrating the passive vibrating element 300.

[0104] The compliance of the passive vibrating component 300 is not specifically limited here. For example, the compliance of the passive vibrating component 300 can be 1, 3, 5, 10, 20, 25, 28, etc.

[0105] Of course, in addition to the compliance of the passive vibrating element 300 being between 1 and 30, in some scenarios, the compliance of the passive vibrating element 300 can also be greater than 30 by reasonably designing its structure. Similarly, when the compliance of the passive vibrating element 300 is between 1 and 30, its structure can also be reasonably designed to further reduce the difficulty of vibration of the passive vibrating element 300.

[0106] In some embodiments, the first dimension of the passive vibrator 300 (e.g.) Figure 2 The second dimension of the passive vibrating element 300 (as shown in a) is greater than 10mm and less than 400mm. Figure 2 (As shown in b) is greater than 10mm and less than 400mm, the first dimension is the passive vibrating element 300 along the first direction (e.g., Figure 2 The maximum length of the passive vibrating element 300 along the second direction (as shown in the middle Y) is the second dimension. Figure 2 The maximum length of (as shown in X) is perpendicular to the first and second directions, and the first and second directions are perpendicular to the thickness direction of the passive vibrating element 300 (e.g., Figure 2 (As shown in Z). By limiting the first and second dimensions of the passive vibrator 300, the volume of the passive vibrator 300 is reduced, making it easier to apply to small electronic devices such as mobile phones, tablets, and smartwatches.

[0107] Of course, when the electronic device is large, either the first dimension or the second dimension of the passive vibrator 300 can be greater than 400mm. For example, when the electronic device is a laptop, both the first dimension and the second dimension of the passive vibrator 300 can be greater than 400mm.

[0108] In this embodiment, the specific location of the first opening 130 is not limited. In some embodiments, the first opening 130 may be disposed on the display screen 170 (e.g., Figure 3 (As shown). Alternatively, in some embodiments, the first opening 130 may also be provided in the middle frame 160. The number of first openings 130 may be one or more, for example, the number of first openings 130 may be six.

[0109] The specific shape of the first opening 130 is not limited here. For example, the first opening 130 can be a circle, a square, or other shapes.

[0110] Figure 6 This is a top view schematic diagram of the fourth type of electronic device provided in the application embodiment. Figure 7 for Figure 6 The diagram shown is an exploded view of the electronic device. Figure 8 for Figure 6 The diagram shows a right view of the electronic device. Figure 9 for Figure 8 A schematic diagram at point F in the middle. Figure 10 for Figure 6 The diagram shown is a left view of the electronic device. Figure 11 for Figure 10 A schematic diagram at point E in the middle. Figure 12 for Figure 6 Cross-sectional view along the AA direction. Figure 13 for Figure 12 A schematic diagram at point D in the middle. Figure 14 for Figure 12 Cross-sectional view along the BB direction. Figure 15 for Figure 12 The diagram shows the sound waves emitted by the electronic device.

[0111] In one embodiment, the passive vibrator 300 and the housing assembly can be assembled by means of adhesive bonding, welding, or other methods. In another embodiment, the passive vibrator 300 and the housing assembly can also be integrally formed.

[0112] There is no limitation on which structural member in the housing assembly the passive vibrating element 300 is fixedly connected to. For example, such as... Figure 3 As shown, the passive vibration element 300 is fixedly connected to the battery cover 150 of the housing assembly. Of course, the passive vibration element 300 can also be fixedly connected to other structural components of the housing assembly, such as... Figure 13 As shown, the passive vibration element 300 can also be fixedly connected to the camera decorative element 180.

[0113] The number of second openings 140 can be one or more, for example Figure 13 As shown, there are two second openings 140. Of course, the number of second openings 140 can be more or less than two.

[0114] In one implementation, see Figure 9 , Figure 11 , Figure 13As shown, the second opening 140 is provided on the side wall of the camera trim 180. Specifically, the second opening 140 is located on the side wall of the portion of the camera trim 180 located on the battery cover 150, ensuring that the third sound wave enters the external space of the electronic device.

[0115] In one implementation, combined with Figures 8 to 11 It can be seen that the second opening 140 is disposed on the side wall of the camera decorative piece 180 in the width direction of the electronic device, for example... Figure 13 As shown, there are two second openings 140, and the two second openings 140 are respectively disposed on the two side walls of the camera decoration 180 in the width direction of the electronic device.

[0116] In another embodiment, the second opening 140 may also be provided on the side wall of the camera trim 180 in the longitudinal direction of the electronic device.

[0117] In another embodiment, the camera decorative element 180 has a second opening 140 on at least one sidewall in the length direction of the electronic device and on at least one sidewall in the width direction of the electronic device.

[0118] In some possible implementations, such as Figure 15 As shown, the electronic device includes a first speaker unit 200a and a second speaker unit 200b. The first speaker unit 200a and the second speaker unit 200b are arranged at intervals along the length of the electronic device and at intervals along the width of the electronic device. Along the length of the electronic device, a passive vibrating element is located between the first speaker unit 200a and the second speaker unit 200b. The passive vibrating element is used to vibrate under the drive of a second sound wave from the first speaker unit 200a and generate a third sound wave. The third sound wave is in phase with the first sound wave from the first speaker unit 200a.

[0119] The arrangement of the first speaker unit 200a and the second speaker unit 200b is asymmetrical, and the asymmetrical physical position of the first speaker unit 200a and the second speaker unit 200b causes the sound field to shift, so that the direction of the sound heard by the user is not concentrated in the center of the screen (i.e. the middle position of the virtual sound field).

[0120] Typically, the low-frequency performance of the second speaker unit 200b is better than that of the first speaker unit 200a. In order to achieve a stereo effect, the low-frequency performance of the second speaker unit 200b is limited in related technologies to keep the sound image centered. However, this also results in a low upper limit on the overall loudness of the electronic device, and also limits the upper limit on the low-frequency performance of the electronic device.

[0121] Therefore, by using the passive vibrating element 300 as a secondary sound source, the third sound wave generated by the passive vibrating element 300 superimposes with the first sound wave of the first speaker unit 200a in the far field, which can improve the low-frequency performance of the first speaker unit 200a. This eliminates the need to center the sound wave by limiting the low-frequency performance of the second speaker unit 200b, thereby improving the stereo effect. Additionally, it can also improve the overall loudness of electronic devices.

[0122] Figure 16 This is a top view schematic diagram of a fifth electronic device provided in the application embodiment.

[0123] Of course, besides being located on the camera decorative element 180, in some embodiments, the second opening 140 can also be located on the middle frame 160 (e.g., Figure 16 (As shown). Alternatively, in some embodiments, the second opening 140 may also be provided in the battery cover 150 (e.g.). Figure 1 (As shown).

[0124] The camera trim 180 is used to decorate the camera module of an electronic device. The camera trim 180 is fixedly connected to the battery cover 150, for example... Figure 7 As shown, the camera trim 180 is bonded to the outer side of the battery cover 150 via adhesive 190. At least a portion of the camera trim 180 is located on the outer side of the battery cover 150, for example... Figure 13 As shown, the camera trim 180 is located outside the battery cover 150, meaning it is located outside the accommodating space. The outer side of the battery cover 150 is the side of the battery cover 150 away from the mid-frame 160 along its thickness direction. Of course, in some embodiments, a portion of the camera trim 180 may be located inside the accommodating space, while another portion may be located outside.

[0125] In some embodiments, such as Figure 13 As shown, the camera trim 180 includes a bracket 181, an adhesive layer 182, and a light-transmitting plate 183. The bracket 181 is located on the outside of the battery cover 150 and is fixedly connected to the battery cover 150 by an adhesive backing 190. The bracket 181 has a thickness direction along the thickness of the electronic device (e.g., ...). Figure 13 A second through-hole (in the Z-direction) opposite the first through-hole 185 is provided to allow light from the light-transmitting plate 183 to pass through the bracket 181 and enter the interior of the first through-hole 185. Along the thickness direction of the electronic device, the light-transmitting plate 183 is located on the side of the bracket 181 away from the battery cover 150 and is fixedly connected to the bracket 181 by an adhesive layer 182. At least a portion of the light-transmitting plate 183 is made of a light-transmitting material, such as a glass lens, to ensure that light from the external space of the electronic device enters the camera module.

[0126] In some possible implementations, such as Figure 13 As shown, the passive vibration element 300 is located inside the camera decoration element 180 and is fixedly connected to the camera decoration element 180, while the passive vibration element 300 is located outside the battery cover 150.

[0127] In this way, by placing the passive vibration element 300 inside the camera decorative element 180 and outside the battery cover 150, the passive vibration element 300 is avoided from occupying the internal space of the electronic device, thus reducing the difficulty of the layout of the internal components of the electronic device.

[0128] For example, such as Figure 7 As shown, the passive vibration element 300 is fixedly connected to the bracket 181 through the adhesive layer 184.

[0129] In some possible implementations, such as Figure 3 As shown, the battery cover 150, the middle frame 160, and the display screen 170 together form a first cavity 600. The speaker unit 220, the middle frame 160, and the display screen 170 together form a second cavity 610. The battery cover 150, the middle frame 160, the speaker unit 220, and the passive vibrator 300 together form a second sub-cavity 622. The battery cover 150 and the passive vibrator 300 together form a first sub-cavity 621 that communicates with the second opening 140.

[0130] In this way, by using the components of the electronic device to form the first cavity 600, the number of components in the electronic device can be reduced, and the assembly efficiency of the electronic device can be improved.

[0131] Of course, the first cavity 600 can be constructed in other ways besides being composed of the battery cover 150, the middle frame 160 and the display screen 170.

[0132] In one embodiment, the loudspeaker unit 200 further includes a housing (not shown), the housing having an inner cavity, the housing being located inside the accommodating space, and the loudspeaker unit 220 being located inside the inner cavity and dividing the inner cavity into a rear cavity and a front cavity. The electronic device also includes a first channel (not shown) and a sound transmission channel, the first channel connecting the front cavity and a first opening 130, the first channel and the front cavity forming a second cavity 610, and a passive vibrating element 300 being located inside the sound transmission channel and dividing the sound transmission channel into a second channel 120 and a third channel 110 (e.g., ...). Figure 13 As shown), the third channel 110 is connected to the second opening 140 and serves as the first sub-cavity 621, and the second channel 120 is connected to the rear cavity and forms the second sub-cavity 622 with the rear cavity.

[0133] At this point, the housing and electronic equipment are assembled structures. That is to say, the speaker unit 200 has its own independent housing, and the housing of the speaker unit 200 is connected to the housing of the electronic equipment through assembly methods such as adhesives, bolts, snap-fit ​​structures, and socket structures.

[0134] For example, the housing can be assembled from multiple shell components. For instance, the housing may include a first shell component and a second shell component, which are fixedly connected and enclose an inner cavity. Of course, the housing can also be assembled from two or more shell components.

[0135] There are no restrictions on how the first channel is formed. In one embodiment, the first channel is disposed in one of the structural components of the electronic device, for example, the first channel is disposed in the middle frame 160, that is, the first channel can be formed by one structural component of the electronic device. In another embodiment, the first channel can also be formed by at least two structural components of the electronic device, for example, the display screen 170 forms part of the first channel, and the middle frame 160 forms another part of the first channel.

[0136] The formation of the second channel 120 is not limited here. In one embodiment, the second channel 120 is disposed in one of the structural components of the electronic device, for example, the second channel 120 is disposed in the middle frame 160, that is, the second channel 120 can be formed by one structural component of the electronic device. In another embodiment, the second channel 120 can also be formed by at least two structural components of the electronic device, for example, the battery cover 150 and the middle frame 160 together form the second channel 120.

[0137] The formation of the third channel 110 is not limited here. In one embodiment, the third channel 110 is disposed in one of the structural components of the electronic device. For example, the third channel 110 is disposed in the camera trim 180, that is, the third channel 110 can be formed by one structural component of the electronic device. In another embodiment, the third channel 110 can also be formed by at least two structural components of the electronic device. For example, the battery cover 150 and the camera trim 180 together form the third channel 110.

[0138] It should be noted that the structural components of an electronic device are the various functional elements that make up the electronic device, such as the mid-frame 160, the display screen 170, the camera decorative part 180, the battery cover 150, etc.

[0139] In another implementation, such as Figure 12 As shown, the housing assembly may further include a enclosure 400 located inside the accommodating space, the enclosure 400 forming an inner cavity with at least one of the mid-frame 160, the display screen 170, and the battery cover 150. For example Figure 12As shown, the enclosure 400 is located between the middle frame 160 and the battery cover 150, forming an inner cavity with the middle frame 160. In this case, the enclosure 400 can be provided with a connecting channel between the second channel 120 and the rear cavity. Alternatively, the middle frame 160 and the enclosure 400 can form a connecting channel, or the middle frame 160 can be provided with a connecting channel. The connecting channel, the second channel 120, and the rear cavity constitute the second sub-cavity 622.

[0140] The enclosure 400 can be a single, integral structure. Alternatively, the enclosure 400 can be a separate structure, meaning that the enclosure 400 is assembled from at least two structural components.

[0141] It should be noted that, in addition to forming the inner cavity, the enclosure 400 can also have other functions, such as supporting the motherboard of an electronic device.

[0142] The loudspeaker driver 220 can also be called a loudspeaker core or a miniature loudspeaker. The loudspeaker driver 220 is mainly composed of a vibration assembly and a magnetic circuit assembly. The vibration assembly includes an active vibrating element and a voice coil. The voice coil is connected to the active vibrating element and drives it to vibrate. The magnetic field generated by the magnetic circuit assembly and the magnetic field generated by the voice coil work together to drive the voice coil in reciprocating motion.

[0143] In some embodiments, the loudspeaker unit 220 may further include a support member for supporting various components of the loudspeaker unit 220, such as supporting the magnetic circuit assembly and the active vibrating element. In one embodiment, the support member may be a ring-shaped structure.

[0144] In some embodiments, the magnetic circuit assembly includes a central magnet and a plurality of side magnets disposed around the central magnet. In other embodiments, the magnetic circuit assembly may have only a central magnet.

[0145] Optionally, the number of side magnets is unlimited. They can be two opposite each other, four opposite each other, or more than four, arranged in a ring around the central magnet.

[0146] Multiple side magnets are spaced apart from the central magnet to form a magnetic gap. The voice coil is suspended in the magnetic gap. When a current decoded by an audio signal is passed through the voice coil, an Ampere force is generated under the action of the magnetic field in the magnetic gap, which drives the voice coil to form a regular motion. As the voice coil moves regularly, it drives the active vibrating element to vibrate and pushes the air around the active vibrating element to radiate sound waves outward.

[0147] In one embodiment, the active vibrating element includes an active diaphragm. Furthermore, the active vibrating element may also include an active dome, which can be understood as a mass block used to increase the weight of the active vibrating element, thereby adjusting the frequency of the sound emitted by the active vibrating element. The outer periphery of the active diaphragm is fixedly disposed on a support member, and the active dome is fixedly disposed on the active diaphragm, so that the active dome and the active diaphragm vibrate together. The voice coil can be connected to the active diaphragm or the active dome of the active vibrating element via a transmission structure.

[0148] The active diaphragm can be one of the following: paper cone diaphragm, plastic diaphragm, metal diaphragm, or synthetic fiber diaphragm.

[0149] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal connection of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances. The terms "first," "second," "third," "fourth," etc. (if present) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0150] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of this application, and are not intended to limit them. Although the embodiments of this application have been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An electronic device, comprising: Comprising: A first opening (130); A housing assembly having a second opening (140); A passive vibration member (300) fixedly connected to the housing assembly; A first cavity (600); A speaker unit (220) located inside the first cavity (600) and dividing the first cavity (600) into a second cavity (610) and a third cavity (620), wherein the second cavity (610) communicates with the external space of the electronic device through the first opening (130), and the third cavity (620) communicates with the external space of the electronic device through the second opening (140).

2. The electronic device of claim 1, wherein, The passive vibration member (300) is located inside the third cavity (620).

3. The electronic device of claim 2, wherein, The electronic device satisfies the relation: 0mm < H < 800mm, where H is the effective distance that the sound wave generated by the speaker unit (220) propagates from the speaker unit (220) to the passive vibration member (300).

4. The electronic device of claim 1, wherein, The compliance of the passive vibration member (300) is greater than or equal to 1 and less than or equal to 30.

5. The electronic device of claim 1, wherein, The passive vibration member (300) includes a vibratable passive membrane.

6. The electronic device of claim 5, wherein, The passive vibration member (300) further includes a passive dome fixedly connected to the middle of the passive membrane.

7. The electronic device of any of claims 1-6, wherein, The housing assembly includes: A battery cover (150); A camera decorative member (180), at least part of the camera decorative member (180) is located outside the battery cover (150), and the second opening (140) is provided on the side wall of the camera decorative member (180).

8. The electronic device of claim 7, wherein, The electronic device includes a first speaker unit (200a) and a second speaker unit (200b), the first speaker unit (200a) and the second speaker unit (200b) are arranged at intervals along the length direction of the electronic device, and the first speaker unit (200a) and the second speaker unit (200b) are arranged at intervals along the width direction of the electronic device; Along the length direction of the electronic device, the passive vibration member (300) is located between the first speaker unit (200a) and the second speaker unit (200b).

9. The electronic device of claim 7, wherein, The passive vibration member (300) is located inside the camera decorative member (180) and fixedly connected to the camera decorative member (180), and the passive vibration member (300) is located outside the battery cover (150).

10. The electronic device according to any one of claims 1-6, characterized in that, The speaker unit (220) includes: A vibration assembly, the vibration assembly includes an active vibration member and a voice coil, the voice coil is connected to the active vibration member, and the voice coil is used to push the active vibration member to vibrate; A magnetic circuit assembly, the magnetic field generated by the magnetic circuit assembly and the magnetic field generated by the voice coil act together to push the voice coil to reciprocate.

11. The electronic device of any of claims 1-6, wherein, The electronic device is a mobile phone, a tablet computer or a smart watch.

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