Mobile Terminal

Abstract

The present application relates to a mobile terminal, comprising: a shell, which is formed with a receiving cavity and a sound outlet; a speaker assembly, which is arranged in the receiving cavity and emits sound from the sound outlet. The speaker assembly includes a speaker and a dustproof net, the dustproof net is fixed on the shell and is located between the speaker and the shell; the speaker includes a vibrating diaphragm for vibrating and emitting sound, and the area of ​​the sound outlet accounts for no more than 15% of the effective area of ​​the vibrating diaphragm; wherein the mesh area of ​​the dustproof net is larger than the area of ​​the sound outlet, and the dustproof net is spaced apart from the shell and the speaker. The mobile terminal of the present application increases the mesh area of ​​the dustproof net, so that the sound is transmitted to the sound outlet through the space between the dustproof net and the shell, increases the air permeability area of ​​the dustproof net, reduces the thermal viscosity effect, thereby reducing the attenuation effect of the dustproof net on the sound, increases the signal-to-noise ratio, and avoids the situation where abnormal sound is generated due to the vibration and collision of the dustproof net with the shell and the speaker.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a mobile terminal. Background Art

[0002] With the development of technology, people have higher and higher requirements for mobile terminals, such as better sound effects, etc. Currently, mobile terminals are becoming thinner and lighter, and the space left for speaker components is very limited, which is not conducive to sound radiation.

[0003] The speaker assembly usually includes a dust screen for dust prevention, protection of the speaker diaphragm, and sound quality adjustment. However, due to the coordination between the keyboard and other components, the ID (product appearance design) will be subject to space limitations when designing the sound outlet area in the panel. In the case where the design of the speaker outlet area is already limited, the dust screen in the prior art is usually set to fit the shell, that is, there is no gap between the dust screen and the shell, and the mesh portion of the dust screen just covers the sound outlet, that is, the area of ​​the mesh portion is roughly equal to the area of ​​the sound outlet. At this time, sound and air can only pass through the smaller area of ​​the mesh portion, which not only causes greater sound loss, increased sound resistance, reduced sound radiation capacity, and sacrifices acoustic performance, but also increases the air speed through the mesh portion, increases the thermal viscosity effect of air and the dust screen, reduces the loudness, and increases wind noise.

[0004] Therefore, in order to solve the above problems, a new mobile terminal must be designed. Summary of the invention

[0005] To achieve the above-mentioned objectives, the present application provides a mobile terminal, comprising: a shell, provided with a receiving cavity and a sound outlet; a speaker assembly, arranged in the receiving cavity and configured to emit sound from the sound outlet, the speaker assembly comprising a speaker and a dustproof net, the dustproof net is fixed on the shell and located between the speaker and the shell, the dustproof net has a mesh portion arranged opposite to the sound outlet and used for emitting sound, the mesh area of ​​the mesh portion is larger than the area of ​​the sound outlet, and the mesh portion is spaced apart from the shell and the speaker.

[0006] As a further improvement of the present application, the speaker includes a vibrating diaphragm for vibrating and producing sound, the sound outlet area accounts for no more than 15% of the effective area of ​​the vibrating diaphragm, and the mesh portion is spaced apart from the vibrating diaphragm.

[0007] As a further improvement of the present application, an adhesive portion is provided between the side of the dustproof net away from the speaker and the shell, so that the dustproof net is connected to the shell through the adhesive portion, and the portion of the dustproof net opposite to the space enclosed by the adhesive portion is configured as a plurality of the mesh portions.

[0008] As a further improvement of the present application, the adhesive portion includes: a first adhesive strip and a second adhesive strip, the first adhesive strip is arranged around the circumferential edge of the dustproof net, the second adhesive strip is arranged on the dustproof net and in the space enclosed by the first adhesive strip, and the portion of the dustproof net opposite to the space enclosed by the first adhesive strip and the second adhesive strip is configured as a plurality of the mesh portions, and the first adhesive strip and the second adhesive strip are configured so that the plurality of the mesh portions avoid the resonant frequency points of the speaker and the receiving cavity.

[0009] As a further improvement of the present application, the second adhesive strips are arranged in a cross shape, and the ends of the second adhesive strips are connected to the first adhesive strips.

[0010] As a further improvement of the present application, the shell includes: a front shell, which is formed with the sound outlet, and a connecting part is arranged between the side of the front shell close to the dustproof net and the bonding part, and the connecting part and the bonding part are arranged correspondingly to bond the bonding part.

[0011] As a further improvement of the present application, the portion of the front shell opposite to the space enclosed by the connecting portion is configured as a plurality of sound emitting portions, the plurality of sound emitting portions are arranged in one-to-one correspondence with the plurality of mesh portions, and the plurality of sound outlets are evenly distributed in the sound emitting portions.

[0012] As a further improvement of the present application, in one of the sound outlet portions and one of the mesh portions that are arranged in a one-to-one correspondence, the area of ​​one of the mesh portions is larger than the area of ​​the sound outlet in one of the sound outlet portions.

[0013] As a further improvement of the present application, the number of the sound outlets is 4, and each of the sound outlet portions is provided with one sound outlet.

[0014] As a further improvement of the present application, the shell also includes: a side wall, which extends from a side of the front shell close to the dustproof net toward the dustproof net; and a first flange, which is arranged around the inner side of the side wall and protrudes from a side of the front shell facing the dustproof net toward the dustproof net; the speaker is provided with a second flange, and the second flange protrudes from a side of the speaker circumferential edge close to the front shell toward the front shell, and the second flange is fixedly connected to the first flange.

[0015] As a further improvement of the present application, the connecting portion is protruded from a side of the front shell close to the dustproof net, and a protruding height of the first flange is greater than a protruding height of the connecting portion.

[0016] As a further improvement of the present application, the first flange and the second flange are bonded and fixed to each other by adhesive.

[0017] As a further improvement of the present application, the mesh portion and the adhesive portion are integrally formed, and the adhesive portion and the connecting portion are bonded and fixed to each other by adhesive.

[0018] Compared with the prior art, the beneficial effects of the present application are: the mesh area of ​​the mesh part in the dustproof net used in the mobile terminal provided by the present application is larger than the area of ​​the sound outlet, and the mesh part and the shell are spaced apart, so that the sound is transmitted to the sound outlet through the spacing space between the mesh part and the shell, thereby increasing the air permeability area of ​​the dustproof net and reducing the thermal viscosity effect, thereby reducing the attenuation effect of the dustproof net on the sound and increasing the signal-to-noise ratio; and, the mobile terminal of the present application avoids the generation of abnormal sound due to the vibration and collision of the mesh part in the dustproof net with the shell and the speaker through the fixed arrangement of the dustproof net and the shell, and the spacing of the mesh part, the speaker and the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0020] Figure 1 This is a partial structural diagram of the mobile terminal of this application;

[0021] Figure 2 This is a schematic diagram of the partial structural decomposition of the speaker assembly and the front shell in the mobile terminal of the present application;

[0022] Figure 3 This is a schematic diagram of the dustproof screen structure of the mobile terminal of this application;

[0023] Figure 4 This is a comparison chart of the frequency response curves of the mobile terminal of the present application and the mobile terminal in the prior art. DETAILED DESCRIPTION

[0024] The present application will be described in detail below in conjunction with the specific implementations shown in the accompanying drawings. However, these implementations do not limit the present application, and any structural, methodological, or functional changes made by a person of ordinary skill in the art based on these implementations are all included in the protection scope of the present application.

[0025] The present application provides a mobile terminal, comprising: a shell, provided with a receiving cavity and a sound outlet; a speaker assembly, arranged in the receiving cavity and configured to emit sound from the sound outlet, the speaker assembly comprising a speaker and a dustproof net, the dustproof net is fixed on the shell and located between the speaker and the shell, the dustproof net has a mesh portion arranged opposite to the sound outlet and used for emitting sound, the mesh area of ​​the mesh portion is larger than the area of ​​the sound outlet, and the mesh portion is spaced apart from the shell and the speaker.

[0026] In some embodiments, the speaker includes a vibrating diaphragm for vibrating and producing sound, the sound outlet area accounts for no more than 15% of the effective area of ​​the vibrating diaphragm, and the mesh portion is spaced apart from the vibrating diaphragm.

[0027] In some embodiments, an adhesive portion is provided between the side of the dustproof net away from the speaker and the shell, so that the dustproof net is connected to the shell through the adhesive portion, and the portion of the dustproof net opposite to the space enclosed by the adhesive portion is configured as a plurality of the mesh portions.

[0028] In some embodiments, the adhesive portion includes: a first adhesive strip and a second adhesive strip, the first adhesive strip is arranged around the circumferential edge of the dustproof net, the second adhesive strip is arranged on the dustproof net and in the space enclosed by the first adhesive strip, and the portion of the dustproof net opposite to the space enclosed by the first adhesive strip and the second adhesive strip is configured as a plurality of the mesh portions, and the first adhesive strip and the second adhesive strip are configured so that the plurality of the mesh portions avoid the resonant frequency points of the speaker and the receiving cavity.

[0029] In some embodiments, the second adhesive strips are arranged in a cross shape, and ends of the second adhesive strips are connected to the first adhesive strips.

[0030] In some embodiments, the shell includes: a front shell, on which the sound outlet is formed, a connecting portion is arranged between a side of the front shell close to the dustproof net and the bonding portion, and the connecting portion is arranged corresponding to the bonding portion to bond the bonding portion.

[0031] In some embodiments, the portion of the front shell opposite to the space enclosed by the connecting portion is configured as a plurality of sound emitting portions, the plurality of sound emitting portions are arranged in one-to-one correspondence with the plurality of mesh portions, and the plurality of sound outlets are evenly distributed in the sound emitting portions.

[0032] In some embodiments, in one of the sound outlet portions and one of the mesh portions that are arranged in a one-to-one correspondence, an area of ​​one of the mesh portions is larger than an area of ​​the sound outlet in one of the sound outlet portions.

[0033] In some embodiments, the number of the sound outlets is 4, and each of the sound outlet portions is provided with one sound outlet.

[0034] In some embodiments, the shell further includes: a side wall, extending from a side of the front shell close to the dustproof net toward the dustproof net; and a first flange, arranged around the inner side of the side wall, and protruding from a side of the front shell facing the dustproof net toward the dustproof net; the speaker is provided with a second flange, the second flange protruding from a side of the speaker circumferential edge close to the front shell toward the front shell, and the second flange is fixedly connected to the first flange.

[0035] In some embodiments, the connection portion is protruded from a side of the front shell close to the dustproof net, and a protruding height of the first flange is greater than a protruding height of the connection portion.

[0036] In some embodiments, the first flange and the second flange are bonded and fixed to each other by adhesive.

[0037] In some embodiments, the mesh portion and the adhesive portion are integrally formed, and the adhesive portion and the connecting portion are bonded and fixed to each other via adhesive.

[0038] The present application also provides a mobile terminal, which includes: a shell, formed with a receiving cavity and a sound outlet; a speaker assembly, arranged in the receiving cavity, and emitting sound from the sound outlet; the speaker assembly includes a speaker and a dustproof net, the dustproof net is fixed on the shell and is located between the speaker and the shell; the speaker includes a vibrating diaphragm for vibrating and sounding, and the area of ​​the sound outlet accounts for a proportion of the effective area of ​​the vibrating diaphragm not more than 15%; wherein the mesh area of ​​the dustproof net is larger than the area of ​​the sound outlet, and the dustproof net is spaced apart from the shell and the speaker.

[0039] In some embodiments, the shell includes: a front shell, which is formed with a sound outlet, and a side of the front shell close to the dustproof net protrudes toward the dustproof net to form a connecting portion; and a rear shell; the dustproof net is fixed to the front shell, including: a plurality of mesh portions; and an adhesive portion, which is formed on a side of the dustproof net close to the front shell, and includes a first adhesive strip and a second adhesive strip, the first adhesive strip is arranged around the circumferential edge of the dustproof net, and the second adhesive strip is used to separate the dustproof net to form a plurality of the mesh portions, so that the plurality of the mesh portions avoid the resonant frequency points of the speaker and the receiving cavity; wherein the connecting portion and the adhesive portion are correspondingly arranged to bond the adhesive portions.

[0040] In some embodiments, the second adhesive strip is arranged in a cross shape, and the end of the second adhesive strip is connected to the first adhesive strip; the second adhesive strip divides the dustproof net into four mesh parts, and the connecting part and the adhesive part are arranged correspondingly to divide the front shell in the receiving cavity into four sound outlet parts, and a plurality of the sound outlets are evenly distributed in the sound outlet parts.

[0041] In some embodiments, the area of ​​any of the mesh portions is larger than the area of ​​the sound outlet in the corresponding sound outlet portion.

[0042] In some embodiments, there are four sound outlets, and each sound outlet portion is provided with one sound outlet.

[0043] In some embodiments, the mesh portion and the adhesive portion are integrally formed, and the adhesive portion and the connecting portion are bonded and fixed to each other via adhesive.

[0044] In some embodiments, the shell further includes: a side wall extending from a side of the front shell close to the dustproof net toward the dustproof net; a first flange arranged around the inner side of the side wall and protruding from a side of the front shell toward the dustproof net toward the dustproof net; the speaker includes: a second flange protruding from a side of the speaker periphery edge close to the front shell toward the front shell; wherein the second flange is fixedly connected to the first flange.

[0045] In some embodiments, a protruding height of the first flange is greater than a protruding height of the connecting portion.

[0046] In some embodiments, the first flange and the second flange are bonded and fixed to each other by adhesive.

[0047] The present application provides a mobile terminal. Figure 1 - Figure 3 The mobile terminal 100 may include a housing 1 and a speaker assembly 2. The housing 1 is formed with a receiving cavity 11 and a sound outlet 12. The speaker assembly 2 is disposed in the receiving cavity 11, and sounds are emitted from the sound outlet 12.

[0048] It should be noted that the mobile terminal 100 may be a device that can make sound, such as an intercom, a speaker, a mobile phone, a smart wearable watch that can make sound, and a navigator. For example, the mobile terminal 100 of the present application may be a PNC380 intercom.

[0049] In some embodiments, the speaker assembly 2 may include a speaker 21 and a dustproof net 22. The dustproof net 22 is fixed to the housing 1 and is located between the speaker 21 and the housing 1. The dustproof net 22 has the functions of dust prevention, protecting the speaker diaphragm, and adjusting the sound quality. Specifically, by setting the dustproof net 22, dust or water vapor is prevented from entering the mobile terminal 100 through the sound outlet 12, affecting the effect of the speaker assembly 2 or the functions of other components in the mobile terminal 100.

[0050] In some embodiments, the speaker 21 may include a vibrating diaphragm (not shown) for vibrating and producing sound. Due to the coordination between the keyboard and other components, ID is subject to space limitations when designing the area of ​​the sound outlet 12 in the panel. Therefore, the area of ​​the sound outlet 12 currently accounts for no more than 15% of the effective area of ​​the vibrating diaphragm. The simple algorithm for calculating the effective area of ​​the vibrating diaphragm is the plane area corresponding to the outer diameter of the vibrating diaphragm.

[0051] In some embodiments, the mesh area of ​​the dustproof net 22 is larger than the area of ​​the sound outlet 12 , and the dustproof net 22 is spaced apart from the housing 1 and the speaker 21 .

[0052] When the speaker assembly 2 is working, the sound is transmitted to the sound outlet 12 through the interval space between the dustproof net 22 and the shell 1. Compared with the prior art in which the dustproof net 22 is set close to the shell 1 and the mesh area of ​​the dustproof net 22 is just equal to the area of ​​the sound outlet 12, the present application increases the mesh area of ​​the dustproof net 22 and changes the traditional sound guide path. That is, the sound is changed from the propagation path of the prior art in which the sound is only transmitted to the sound outlet 12 through the dustproof net 22 with the smallest mesh area to the propagation path in which the sound is transmitted through the dustproof net 22 with a larger mesh area to the interval space between the dustproof net 22 and the shell 1 and finally to the sound outlet 12, which increases the area of ​​the sound and air passing through the dustproof net 22 and reduces the thermal viscosity effect. Therefore, the attenuation effect of the dustproof net 22 on the sound is reduced, and the signal-to-noise ratio is increased. In addition, the mobile terminal 100 of the present application avoids the generation of abnormal sounds due to the dustproof net 22 vibrating and colliding with the shell 1 and the speaker 21 by fixing the dustproof net 22 and the shell 1 and spacing the dustproof net 22, the speaker 21 and the shell 1.

[0053] Specifically, the principle of sound attenuation in the prior art is: according to the formula of Newton's law of viscosity, the shear stress of the fluid is proportional to the angular velocity of the shear deformation. The speed of the particles close to the boundary during the propagation of sound is very slow and approaches zero on the boundary. However, in the receiving chamber 11, the particles move at the standard acoustic speed according to the Euler equation. Under the action of viscosity, the air is stuck to the boundary, so the boundary speed is zero, and the adjacent particles also slow down, resulting in the loss of overall energy, or in other words, due to the viscous dissipation caused by shear, the sound energy is converted into heat energy. However, in the receiving chamber 11, the molecules can move freely, but because the mesh area of ​​the dustproof net 22 is small, there are few molecules left. In short, the smaller the mesh area of ​​the dustproof net 22, the greater the speed of air passing through the dustproof net 22, and the greater the shear force on the air at the edge, so that the kinematic viscosity of the air at the edge of the dustproof net 22 is greater, the sound loss is greater, and then the sound loudness is smaller, that is, the energy transmitted by the sound is smaller.

[0054] On the contrary, in the present application, since the mesh area of ​​the dustproof net 22 increases, the speed of air passing through the dustproof net 22 decreases, and the shear force on the air at the edge decreases, so that the kinetic viscosity of the air at the edge of the dustproof net 22 decreases, the sound loss decreases, and the sound loudness increases, that is, the energy of sound transmission increases.

[0055] In some embodiments, the housing 1 may include a front housing 13, a rear housing (not shown), and a side wall 14 extending from a side of the front housing 13 close to the dustproof net 22 toward the dustproof net 22. The front housing 13 is formed with the sound outlet 12. The dustproof net 22 is fixed to the front housing 13 and includes a plurality of mesh portions 221 and an adhesive portion 222 formed on a side of the dustproof net 22 close to the front housing 13.

[0056] In some embodiments, the adhesive portion 222 includes a first adhesive strip 2221 and a second adhesive strip 2222. The first adhesive strip 2221 is arranged around the peripheral edge of the dustproof net 22. The second adhesive strip 2222 is used to separate the dustproof net 22 to form a plurality of mesh portions 221. Since the speaker 21 and the receiving cavity 11 have a resonant frequency point, the arrangement of the second adhesive strip 2222 enables the plurality of mesh portions 221 to avoid the resonant frequency point of the speaker 21 and the receiving cavity 11. Specifically, in the process of increasing the area of ​​the mesh portion 221 of the dustproof net 22, its resonant frequency will show a downward trend. By the above-mentioned fixing method of the block dustproof net 22, the structural shape of each mesh portion 221 is controlled to avoid the resonant frequency point and the voice frequency band of the speaker 21 and the receiving cavity 11, and the modal vibration shape and amplitude of the dustproof net 22 are controlled, thereby avoiding the generation of abnormal sound and effectively ensuring the signal-to-noise ratio.

[0057] In some embodiments, the second adhesive strips 2222 are arranged in a cross shape, and the ends of the second adhesive strips 2222 are connected to the first adhesive strips 2221. The second adhesive strips 2222 separate the dustproof net 22 into four net-like parts 221. Of course, in other embodiments of the present application, the shape of the second adhesive strips 2222 and the separation of the dustproof net 22 can be adjusted according to actual use needs.

[0058] In some embodiments of the present application, in order to avoid the resonance frequency point of the speaker 21 and the receiving cavity 11, the adhesive portion 222 divides the dustproof net 22 into four mesh portions 221 of different areas, that is, the intersection of the first adhesive strip 2221 and the second adhesive strip 2222 is not located at the center point of the entire dustproof net 22. Of course, in other embodiments, the specific setting position of the adhesive portion 222 and the division of the mesh portion 221 can be set according to the specific resonance frequency points of different speaker assemblies 2. Correspondingly, the front shell 13 is protruded toward the dustproof net 22 on one side close to the dustproof net 22 to form a connecting portion 131, and the connecting portion 131 is correspondingly arranged with the adhesive portion 222 to bond the adhesive portion 222.

[0059] In some embodiments, the connecting portion 131 may include a first connecting strip 1311 and a second connecting strip 1312. The first adhesive strip 2221 is bonded and fixed to the first connecting strip 1311. The second adhesive strip 2222 is bonded and fixed to the second connecting strip 1312. In some embodiments, the mesh portion 221 and the adhesive portion 222 are integrally formed, and the adhesive portion 222 and the connecting portion 131 are bonded and fixed to each other by adhesive. In some embodiments, the connecting portion 131 and the adhesive portion 222 are correspondingly arranged to separate the front shell 13 in the receiving cavity 11 into four sound outlets 132. A plurality of the sound outlets 12 are evenly distributed in the sound outlet 132.

[0060] By means of the above method, the dustproof net 22 is firmly fixed on the front shell 13, the tension of the dustproof net 22 is ensured, and the abnormal sound caused by insufficient tension is avoided, which is conducive to the lightness and thinness of the mobile terminal.

[0061] In some embodiments, the protruding thickness of the connecting portion 131 ensures the spacing distance between the dust screen 22 and the front shell 13, reducing sound loss. Of course, in other embodiments of the present application, the bonding portion 222 and the connecting portion 131 can also be fixed by other means, as long as the bonding portion 222 and the connecting portion 131 are connected and fixed, the purpose of the present application can be achieved.

[0062] In some embodiments, there are four sound outlets 12, and each sound outlet portion 132 is provided with one sound outlet 12. Of course, in other embodiments, the number of sound outlets 12 may also be increased or decreased according to actual conditions.

[0063] In some embodiments, the area of ​​any of the mesh portions 221 is larger than the area of ​​the corresponding sound outlet 12 in the sound outlet portion 132. Therefore, when any of the sound outlets 12 emits sound, the sound is transmitted from the mesh portion 221 of the dustproof net 22 through the space between the dustproof net 22 and the front shell 13 to the corresponding sound outlet 12, thereby enhancing the radiation capability of the sound transmitted from any of the sound outlets 12.

[0064] In some embodiments, the housing 1 may include a first flange 15 arranged around the inner side of the side wall 14, the first flange 15 protruding from the side of the front shell 13 toward the dustproof net 22 toward the dustproof net 22; the speaker 21 includes a second flange 211 protruding from the side of the peripheral edge of the speaker 21 close to the front shell 13 toward the front shell 13, and the second flange 211 is fixedly connected to the first flange 15. Thus, the present application achieves a firm fixation of the speaker 21 to the front shell 13. Specifically, in some embodiments, the first flange 15 and the second flange 211 can also be fixed to each other by adhesive bonding. Of course, in other embodiments, the fixing method of the first flange 15 and the second flange 211 can also be other methods, as long as the speaker 21 is fixed to the front shell 13, the purpose of the present application can be achieved.

[0065] Furthermore, in order to ensure the spacing distance between the speaker 21 and the dustproof net 22, the protruding height of the first flange 15 is greater than the protruding height of the connecting portion 131. Therefore, when the speaker assembly 2 of the present application is working, the dustproof net 22 will not collide with the speaker 21 and the front shell 13.

[0066] It should be noted that the protruding height of the connecting portion 131 is designed so as not to touch the front shell 13 within the maximum amplitude of the dustproof net 22 , and the protruding height of the first flange 15 is designed so as not to touch the speaker 21 within the maximum amplitude of the dustproof net 22 .

[0067] See also Figure 4 , Figure 4 : is a comparison chart of the frequency response curves of the mobile terminal 100 of the present application and the mobile terminal in the prior art in the acoustic performance test, wherein the solid line at the top corresponds to the mobile terminal 100 of the present application, and the solid line at the bottom corresponds to the mobile terminal in the prior art. Figure 4It can be seen that the loudness of the mobile terminal 100 of the present application is significantly improved in both low and medium frequencies and high frequencies, with an increase of nearly 4dB at 1kHz and 3.5kHz, and the phase at 3.5kHz is shifted backward, and the frequency modulation extension is slightly improved. Therefore, the mobile terminal 100 of the present application can use less power consumption to achieve the same loudness of sound, while ensuring the sound quality, it can also reduce energy consumption.

[0068] To sum up, the mesh area of ​​the dustproof net 22 used in the mobile terminal 100 provided in the present application is larger than the area of ​​the sound outlet 12, and the dustproof net 22 is spaced apart from the shell 1, so that the sound is transmitted to the sound outlet 12 through the spacing space between the dustproof net 22 and the shell 1, thereby increasing the air permeability area of ​​the dustproof net 22 and reducing the thermal viscosity effect, thereby reducing the attenuation effect of the dustproof net 22 on the sound and increasing the signal-to-noise ratio; and, the mobile terminal 100 of the present application avoids the generation of abnormal sounds due to the vibration and collision of the dustproof net 22 with the shell 1 and the speaker 21 through the fixed setting of the dustproof net 22 and the shell 1 and the spacing of the dustproof net 22, the speaker 21 and the shell 1.

[0069] It should be understood that although the present specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0070] The series of detailed descriptions listed above are only specific descriptions of feasible implementation examples of the present application and are not intended to limit the scope of protection of the present application. Any equivalent implementation examples or changes that do not deviate from the technical spirit of the present application should be included in the scope of protection of the present application.

Claims

1. A mobile terminal, characterized in that: include: The housing is provided with a receiving cavity and a sound outlet; A speaker assembly is arranged in the receiving cavity and configured to emit sound from the sound outlet. The speaker assembly includes a speaker and a dustproof net. The dustproof net is fixed to the shell and is located between the speaker and the shell. The dustproof net has a mesh portion arranged opposite to the sound outlet and used for emitting sound. The mesh area of ​​the mesh portion is larger than the area of ​​the sound outlet. The mesh portion is spaced apart from the shell and the speaker. An adhesive portion is arranged between the side of the dustproof net away from the speaker and the shell, so that the dustproof net is connected to the shell through the adhesive portion. Wherein, the bonding portion comprises: A first adhesive strip and a second adhesive strip, wherein the first adhesive strip is arranged around the circumferential edge of the dustproof net, and the second adhesive strip is arranged on the dustproof net and in the space enclosed by the first adhesive strip, and a portion of the dustproof net opposite to the space enclosed by the first adhesive strip and the second adhesive strip is configured as a plurality of the mesh portions, and the first adhesive strip and the second adhesive strip are configured so that the plurality of the mesh portions avoid the resonant frequency points of the speaker and the receiving cavity.

2. The mobile terminal according to claim 1, characterized in that: The speaker includes a vibrating diaphragm for vibrating and producing sound, the sound outlet area accounts for no more than 15% of the effective area of ​​the vibrating diaphragm, and the mesh portion is spaced apart from the vibrating diaphragm.

3. The mobile terminal according to claim 1, characterized in that: The second adhesive strips are arranged in a cross shape, and the ends of the second adhesive strips are connected to the first adhesive strips.

4. The mobile terminal according to claim 1, characterized in that: The housing comprises: The front shell is formed with the sound outlet, a connecting portion is arranged between a side of the front shell close to the dustproof net and the bonding portion, and the connecting portion is arranged correspondingly to the bonding portion to bond the bonding portion.

5. The mobile terminal according to claim 4, characterized in that: The portion of the front shell opposite to the space enclosed by the connecting portion is configured as a plurality of sound outlets, the plurality of sound outlets are arranged in one-to-one correspondence with the plurality of mesh portions, and the plurality of sound outlets are evenly distributed in the sound outlets.

6. The mobile terminal according to claim 5, characterized in that: In one of the sound outlet portions and one of the mesh portions that are arranged in a one-to-one correspondence, an area of ​​one of the mesh portions is larger than an area of ​​the sound outlet in one of the sound outlet portions.

7. The mobile terminal according to claim 5, characterized in that: The number of the sound outlets is 4, and each of the sound outlet portions is provided with one sound outlet.

8. The mobile terminal according to claim 4 or 5, characterized in that: The housing further comprises: A side wall extending from a side of the front shell close to the dustproof net toward the dustproof net; and A first flange is disposed around the inner side of the side wall and protrudes from a side of the front shell toward the dustproof net toward the dustproof net; The speaker is provided with a second flange, the second flange is protruded toward the front shell from a side of the speaker periphery edge close to the front shell, and the second flange is fixedly connected to the first flange.

9. The mobile terminal according to claim 8, characterized in that: The connecting portion is protruded from a side of the front shell close to the dustproof net, and a protruding height of the first flange is greater than a protruding height of the connecting portion.

10. The mobile terminal according to claim 8, characterized in that: The first flange and the second flange are bonded and fixed to each other by adhesive.

11. The mobile terminal according to claim 4, characterized in that: The mesh portion and the bonding portion are integrally formed, and the bonding portion and the connecting portion are bonded and fixed to each other via adhesive.

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