Electronic device

Abstract

The invention discloses electronic equipment, and relates to the technical field of electronic products. The electronic equipment comprises a shell, a camera decorating part, a lens and an acoustic device, the camera decorating part is arranged on the shell, the lens covers the side, back to the shell, of the camera decorating part, and the acoustic device is arranged in the electronic equipment; the lens is provided with a first through hole, the camera decorating part is internally provided with an air pressure balance channel and a sound guide channel, one end of the air pressure balance channel is communicated with the internal space of the electronic equipment, the other end of the air pressure balance channel is communicated with the first through hole, one end of the sound guide channel is communicated with the acoustic device, and the other end of the sound guide channel is communicated with the first through hole. And the other end of the sound guide channel is communicated with the first through hole.

Description

Technical Field

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

[0002] In related technologies, some electronic products employ high waterproof ratings, resulting in excellent internal and external insulation. However, this also leads to the following problems: ① When external air pressure changes, the pressure difference between the inside and outside of the electronic device causes the barometer and other components to malfunction, making it impossible to accurately obtain the ambient atmospheric pressure value; ② When a user presses the electronic device, the internal airflow cannot be expelled in time, and the sudden strong air pressure can drive the speaker diaphragm, causing noise. To solve these problems, related technologies often incorporate air pressure balancing holes in electronic devices. These holes allow the internal and external air pressure to communicate while simultaneously isolating water and dust—that is, they are waterproof and dustproof, but not airtight.

[0003] Furthermore, with the increasing demand for directional audio recording in video recording scenarios, the number of microphones in electronic devices is constantly increasing. Since electronic devices typically require a microphone hole on the surface of the device for each microphone, the number of microphone holes on the surface of the electronic device also needs to be increased accordingly.

[0004] In summary, because some electronic devices require pressure balancing holes and multiple microphone holes on their surfaces, the number of openings on the surface of these devices is relatively large, which reduces their overall aesthetic appeal. Therefore, the related technologies suffer from the problem of having a large number of openings on the surface of electronic devices. Summary of the Invention

[0005] This application provides an electronic device that can solve the problem of a large number of openings on the surface of electronic devices in related technologies.

[0006] In a first aspect, an electronic device is provided, including a housing, a camera trim, a lens, and an acoustic device, wherein the camera trim is disposed on the housing, the lens covers the side of the camera trim facing away from the housing, and the acoustic device is disposed inside the electronic device;

[0007] The lens has a first through hole, and the camera decorative part has an air pressure balance channel and a sound guide channel. One end of the air pressure balance channel is connected to the internal space of the electronic device, and the other end of the air pressure balance channel is connected to the first through hole. One end of the sound guide channel is connected to the acoustic device, and the other end of the sound guide channel is connected to the first through hole.

[0008] In this embodiment, by creating a first through-hole in the lens and providing an air pressure balance channel and a sound guiding channel within the camera decorative component, the first through-hole can serve as an air pressure balance hole, since one end of the air pressure balance channel is connected to the internal space of the electronic device and the other end is connected to the first through-hole. Simultaneously, since one end of the sound guiding channel is connected to the acoustic device and the other end is connected to the first through-hole, the first through-hole can also serve as an external opening for the acoustic device. This means the air pressure balance hole can be reused as an external opening for the acoustic device, thereby reducing the number of openings on the surface of the electronic device and improving its aesthetics. Attached Figure Description

[0009] Figure 1 This is one of the exploded structural diagrams of the electronic device provided in the embodiments of this application;

[0010] Figure 2 This is one of the schematic diagrams of the internal structure of the camera decorative component;

[0011] Figure 3 This is a rear view of the electronic device in the embodiments of this application;

[0012] Figure 4 This is a schematic diagram of the noise transmission channel inside the electronic device into the air pressure balance channel in an embodiment of this application;

[0013] Figure 5 This is a schematic diagram of noise entering the sound guiding channel in the air pressure balance channel in an embodiment of this application;

[0014] Figure 6 This is a schematic diagram of noise entering the acoustic device in the sound guiding channel in an embodiment of this application;

[0015] Figure 7 This is the second schematic diagram of the internal structure of the camera decorative component;

[0016] Figure 8 This is a schematic diagram of the noise reduction principle of the Helmholtz resonator in the embodiments of this application;

[0017] Figure 9 This is the second exploded view of the electronic device provided in the embodiments of this application;

[0018] Figure 10 This is the third schematic diagram of the internal structure of the camera decorative component;

[0019] Figure 11 yes Figure 10 A magnified view of region A in the image;

[0020] Figure 12This is the third exploded view of the electronic device provided in the embodiments of this application;

[0021] Figure 13 This is the fourth schematic diagram of the internal structure of the camera decorative component;

[0022] Figure 14 yes Figure 13 A magnified view of region B in the image;

[0023] Figure 15 This is a schematic diagram of the sound-absorbing insert.

[0024] Figure 16 This is a cross-sectional schematic diagram of the sound-absorbing insert;

[0025] Figure 17 This is the fourth exploded view of the electronic device provided in the embodiments of this application;

[0026] Figure 18 This is the fifth schematic diagram of the internal structure of the camera decorative component;

[0027] Figure 19 This is the fifth exploded view of the electronic device provided in the embodiments of this application;

[0028] Figure 20 This is a schematic diagram of the spectrum analysis curve of noise generated by the movement of a camera inside an electronic device. Detailed Implementation

[0029] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0030] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, the scope of protection for "A or B" covers at least three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. In addition, the terms "A and / or B," "at least one of A and B," and "at least one of A or B" also cover at least the above three scenarios. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0031] The electronic device provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0032] Please see Figures 1 to 19 This application provides an electronic device, including a housing 100, a camera decorative element 200, a lens 300, and an acoustic device 400. The camera decorative element 200 is disposed on the housing 100, the lens 300 covers the side of the camera decorative element 200 facing away from the housing 100, and the acoustic device 400 is disposed inside the electronic device.

[0033] The lens 300 has a first through hole 310. The camera decorative piece 200 has an air pressure balance channel 230 and a sound guide channel 240. One end of the air pressure balance channel 230 is connected to the internal space of the electronic device, and the other end of the air pressure balance channel 230 is connected to the first through hole 310. One end of the sound guide channel 240 is connected to the acoustic device 400, and the other end of the sound guide channel 240 is connected to the first through hole 310.

[0034] The acoustic device 400 can be of various types, such as a microphone or a speaker. For ease of understanding, this application uses a microphone as an example to further explain the structure of the electronic device in this embodiment.

[0035] It is understood that the aforementioned air pressure balance channel 230 and sound guiding channel 240 are two strip-shaped channels inside the camera decorative piece 200. Please refer to [link / reference]. Figure 2 In some embodiments of this application, the camera decorative component 200 also has a third through hole 250 and a fourth through hole 260. The third through hole 250 is opposite to the internal space of the electronic device, and the fourth through hole 260 is opposite to the sound-receiving surface of the acoustic device 400. The air pressure balancing channel 230 is a channel extending from the first through hole 310 to the third through hole 250, meaning the third through hole 250 can serve as one end of the air pressure balancing channel 230 communicating with the internal space of the electronic device. The sound guiding channel 240 is a channel extending from the first through hole 310 to the fourth through hole 260, meaning the fourth through hole 260 can serve as one end of the sound guiding channel 240 communicating with the acoustic device 400. In other words, the air pressure balancing channel 230 and the sound guiding channel 240 intersect at the first through hole 310, and there are no other intersection points between them.

[0036] The internal space of the aforementioned electronic device may include the space between the housing 100 and the mid-frame of the electronic device, wherein the housing 100 and the mid-frame are stacked. The aforementioned air pressure balancing channel can connect the internal space of the electronic device with the outside of the electronic device, so that the air pressure inside the electronic device is equal to the air pressure outside the electronic device.

[0037] It is understood that the aforementioned housing 100 may include the back cover of an electronic device.

[0038] The external audio signal of the aforementioned electronic device can be transmitted sequentially through the first through hole 310 and the sound guide channel 240 to the sound receiving surface of the acoustic device 400, so that the acoustic device 400 can collect the acoustic signal.

[0039] The aforementioned acoustic device 400 can be mounted on the mid-frame. The aforementioned camera decorative piece 200 may be provided with mounting holes, through which the camera lens can pass, and the light-incident surface of the lens can be opposite to the lens 300.

[0040] Please see Figure 1 In some embodiments of this application, the camera decorative component 200 includes a mounting plate 210 and a foam adhesive layer 220. The air pressure balance channel 230 and the sound guiding channel 240 are respectively groove-shaped channels formed on the surface of the mounting plate 210 facing the lens 300. The foam adhesive layer 220 covers the surface of the mounting plate 210 facing the lens 300 to close the groove of the air pressure balance channel 230 and the groove of the sound guiding channel 240. The lens 300 is bonded to the mounting plate 210 through the foam adhesive layer 220. The foam adhesive layer 220 has a second through hole 221 opposite to the first through hole 310. The first through hole 310 communicates with the air pressure balance channel 230 through the second through hole 221, and the first through hole 310 communicates with the sound guiding channel 240 through the second through hole 221.

[0041] In this embodiment, by creating a first through-hole 310 in the lens 300 and providing an air pressure balance channel 230 and a sound guiding channel 240 within the camera decorative component 200, the first through-hole 310 can serve as an air pressure balance hole, since one end of the air pressure balance channel 230 communicates with the internal space of the electronic device and the other end communicates with the first through-hole 310. Simultaneously, since one end of the sound guiding channel 240 communicates with the acoustic device 400 and the other end communicates with the first through-hole 310, the first through-hole 310 can also serve as an external opening for the acoustic device 400. This means the air pressure balance hole can be reused as an external opening for the acoustic device 400, thereby reducing the number of openings on the surface of the electronic device and improving its aesthetics.

[0042] In some embodiments of this application, a balancing breathable membrane 270 can be covered at the third through-hole 250. This balancing breathable membrane 270 has a water- and dust-proof but not air-proof balancing breathable function. Although the third through-hole 250 is separated from the interior of the device by the balancing breathable membrane 270, the camera compact module (CCM) inside the device generates noise from moving components during focusing. This noise will be... Figure 4 The direction indicated by the arrow passes through the balanced breathable membrane 270 and is transmitted to the air pressure balance channel 230. The air pressure balance channel 230 is connected to the sound guiding channel 240. Therefore, noise entering the air pressure balance channel 230 can be transmitted according to… Figure 5 The path indicated by the arrow in the image is transmitted to the sound guide channel 240, and the noise entering the sound guide channel 240 can then be transmitted according to... Figure 6 The sound enters the acoustic device 400 in the direction indicated by the arrow in the image and is thus collected by the acoustic device 400. This sound is called recording noise. For example, when a camera is working and recording audio at the same time, there will be "squeaking" noise mixed in the audio.

[0043] Optionally, the camera decorative component 200 is provided with a noise reduction structure, and the noise reduction structure is connected to the air pressure balance channel 230 to absorb noise flowing through the air pressure balance channel 230.

[0044] The aforementioned noise reduction structure can be of various types, such as a Helmholtz resonator array, absorbent cotton, a soundproof cover, or a balanced channel of an acoustic labyrinth, to block and eliminate the aforementioned noise crosstalk problem.

[0045] The noise flowing through the air pressure balance channel 230 can be various noises generated by various components inside the electronic device during operation and transmitted from the third through hole 250 to the air pressure balance channel 230. For example, it can be the noise generated by the movement of the focusing structure during the focusing process of the camera.

[0046] In this embodiment, by providing a noise-reducing structure inside the camera decorative component 200 and connecting the noise-reducing structure to the air pressure balance channel 230, the noise flowing through the air pressure balance channel 230 can be absorbed, thereby reducing the interference of noise transmitted from the inside of the electronic device into the air pressure balance channel 230 on the operation of the acoustic device 400.

[0047] Optionally, the noise reduction structure includes a Helmholtz resonant cavity 280, the neck of which is connected to the air pressure balance channel 230, and the resonant frequency of the Helmholtz resonant cavity 280 is located within the frequency range corresponding to the noise.

[0048] The frequency range corresponding to the aforementioned noise can refer to the frequency band to which the noise frequency belongs. Please refer to [link / reference needed]. Figure 20 Spectrum analysis curve of noise generated by camera movement inside electronic devices. Figure 20 The results of spectral analysis of actual camera motion noise are shown below. Figure 20 The horizontal axis represents frequency in Hz, and the vertical axis represents the amplitude of the signal recorded by the microphone after conversion to a digital signal in dBFS. Its magnitude directly reflects the sound volume. Comparing the amplitude during zooming and when not zooming, the camera zoom sound exhibits a more concentrated spectral distribution in the frequency domain. Therefore, noise can be eliminated by designing noise reduction structures targeting specific frequencies. The frequencies of the aforementioned noise can be... Figure 20 The frequency band where the color curve bulges out relative to the blue area is between 4800Hz and 10000Hz.

[0049] Please see Figure 8 This is a schematic diagram of the structure of the Helmholtz resonator 280 in some embodiments of this application. The Helmholtz resonator 280 includes a bottleneck and a cavity connected to the bottleneck. The cavity is connected to the pressure balance channel 230 through the bottleneck, which is equivalent to connecting the Helmholtz resonator 280 in parallel within the pressure balance channel 230. The principle of connecting the Helmholtz resonator 280 in parallel is as follows: [The text abruptly ends here, likely due to an incomplete sentence or a formatting error.] Figure 8 This can be illustrated by an electroacoustic analogy: connecting a thin pipe to a cavity in the main acoustic channel is analogous to connecting a bypass to ground in parallel, consisting of an acoustic impedance Ra, acoustic capacitance Ca, and acoustic mass Ma. This is equivalent to a band-stop filter that can filter out acoustic signals of specific frequencies. The resonant frequency of the resonant cavity is mainly affected by the pipe size and cavity volume.

[0050] The aforementioned Helmholtz resonant cavity 280, as a resonant noise reduction structure, achieves its noise reduction principle based on the resonant sound absorption effect. When the frequency of the external sound wave matches the natural frequency of the Helmholtz resonant cavity 280, the cavity resonates. At this point, the vibration velocity of the air column in the bottleneck reaches its maximum, and frictional losses increase significantly, thereby converting sound energy into heat energy. Based on this principle, the resonant frequency point can be controlled by designing the dimensions of the cavity and the bottleneck pipe to filter out sound waves of a specified frequency, such as... Figure 8 The resonant frequency (f) of the Helmholtz resonator 280 can be calculated using the following formula:

[0051]

[0052] Where c is the speed of sound, which is approximately 343 m / s in air at 20℃; A is the cross-sectional area of ​​the bottleneck; V is the volume of the cavity; and L is the length of the bottleneck.

[0053] In this embodiment, by including a Helmholtz resonant cavity 280 in the noise reduction structure, with the neck of the Helmholtz resonant cavity 280 connected to the air pressure balance channel 230, and the resonant frequency of the Helmholtz resonant cavity 280 located within the frequency range corresponding to the noise, the Helmholtz resonant cavity 280 can eliminate the noise flowing through the air pressure balance channel 230.

[0054] Optionally, the noise reduction structure includes at least two Helmholtz resonant cavities 280, and the neck of each of the at least two Helmholtz resonant cavities 280 is connected to a different position of the air pressure balance channel 230.

[0055] The number and arrangement of the Helmholtz resonant cavities 280 included in the aforementioned noise reduction structure can be set as needed. For example, please refer to [link to relevant documentation]. Figure 7 In some embodiments of this application, the noise reduction structure includes three Helmholtz resonant cavities 280, which are respectively connected to three different positions of the air pressure balance channel 230.

[0056] It should be noted that the resonant frequencies of at least two of the aforementioned Helmholtz resonators 280 are all located within the frequency range corresponding to the noise. Among the two Helmholtz resonators 280, the resonant frequencies of the different Helmholtz resonators 280 can be the same or different, and can be set as needed.

[0057] exist Figure 7In the illustrated embodiment, when noise inside the electronic device enters the air pressure balance channel 230 through the third through hole 250, the sound signal in a specific frequency range is absorbed by the Helmholtz resonant cavity 280 array, so that the noise cannot continue to propagate through the air pressure balance channel 230 to the sound guide channel 240, thereby achieving the purpose of noise elimination.

[0058] exist Figure 7 In the illustrated embodiment, at least two of the aforementioned Helmholtz resonant cavities 280 constitute a Helmholtz resonant array, which is designed on a mounting plate 210. The mounting plate 210 and the lens 300 are bonded and fixed together by a foam adhesive layer 220. The foam adhesive layer 220 has no holes above the pressure balance channel 230 and the sound guide channel 240, thus forming a closed pressure balance channel 230 and the sound guide channel 240.

[0059] In this embodiment, by including at least two Helmholtz resonant cavities 280 in the noise reduction structure, and having the neck of each of the at least two Helmholtz resonant cavities 280 connected to different positions of the air pressure balance channel 230, noise reduction can be achieved at different positions of the air pressure balance channel 230, thereby further improving the noise reduction effect on the air pressure balance channel 230.

[0060] Optionally, please see Figure 10 and Figure 11 The noise reduction structure includes sound-absorbing cotton 291, which is embedded in the air pressure balance channel 230.

[0061] Please see further. Figure 10 and Figure 11 The camera decorative component 200 may have an internal accommodating cavity 292 communicating with the air pressure balance channel 230. The accommodating cavity 292 extends from one side of the air pressure balance channel 230 to the other side, and is filled with sound-absorbing cotton 291. This allows the sound-absorbing cotton 291 to span the air pressure balance channel 230, facilitating the elimination of noise within the air pressure balance channel 230. Simultaneously, because the sound-absorbing cotton 291 has a certain degree of air permeability, the air pressure balance channel 230 can function as a means of balancing the internal air pressure of the electronic device.

[0062] In this embodiment, by including sound-absorbing cotton 291 in the noise reduction structure and embedding the sound-absorbing cotton 291 in the air pressure balance channel 230, the noise inside the air pressure balance channel 230 can be eliminated by the sound-absorbing cotton 291.

[0063] Optionally, the sound-absorbing cotton 291 includes a plurality of through holes, and the through holes in the sound-absorbing cotton 291 are used to connect the first through hole 310 with the internal space of the electronic device.

[0064] The sound-absorbing cotton 291 mentioned above can be porous sound-absorbing cotton. Since the sound-absorbing cotton 291 includes multiple through holes, and the through holes in the sound-absorbing cotton 291 can connect the first through hole 310 with the internal space of the electronic device, the through holes in the sound-absorbing cotton 291 can keep the airflow inside the air pressure balance channel 230 unobstructed and prevent the sound-absorbing cotton 291 from blocking the airflow inside the air pressure balance channel 230.

[0065] exist Figures 10 to 12 In the illustrated embodiment, the suction cotton pasting space is designed on the mounting plate 210. During assembly, the suction cotton is first pasted or placed in its pasting space, and then a foam adhesive layer 220 is covered on top to fix the position of the suction cotton, while simultaneously bonding and fixing the lens 300 to the mounting plate 210. The foam adhesive layer 220 has no holes above the air pressure balance channel 230 and the sound guide channel 240, thus forming a closed air pressure balance channel 230 and the sound guide channel 240.

[0066] In this embodiment, by making the sound-absorbing cotton 291 include multiple through holes, and the through holes in the sound-absorbing cotton 291 are used to connect the first through hole 310 with the internal space of the electronic device, the through holes in the sound-absorbing cotton 291 can keep the airflow inside the air pressure balance channel 230 unobstructed, which is beneficial to keep the internal air pressure and external air pressure of the electronic device relatively consistent.

[0067] Optionally, the noise reduction structure includes a noise-absorbing insert 2010, which is inserted into the air pressure balance channel 230 and divides the air pressure balance channel 230 into a first sub-channel 231 and a second sub-channel 232. The first sub-channel 231 extends from the first through hole 310 to the noise-absorbing insert 2010, and the second sub-channel 232 extends from the noise-absorbing insert 2010 to the internal space of the electronic device.

[0068] It is understandable that vent holes can be provided on the aforementioned muffler plate 2010, so that air in the air pressure balance channel 230 can flow between the first sub-channel 231 and the second sub-channel 232 through the vent holes on the muffler plate 2010 to ensure air pressure balance inside and outside the electronic device.

[0069] In this embodiment, by including a noise-absorbing insert 2010 in the noise reduction structure, the noise-absorbing insert 2010 is inserted into the air pressure balance channel 230, and the noise-absorbing insert 2010 divides the air pressure balance channel 230 into a first sub-channel 231 and a second sub-channel 232. The first sub-channel 231 extends from the first through hole 310 to the noise-absorbing insert 2010, and the second sub-channel 232 extends from the noise-absorbing insert 2010 to the internal space of the electronic device. In this way, the noise inside the air pressure balance channel 230 can be eliminated by the noise-absorbing insert 2010.

[0070] Optionally, the noise-absorbing plate 2010 includes a first noise-absorbing mesh plate 2011, a fixed base plate 2012, and a second noise-absorbing mesh plate 2013 stacked sequentially. The first noise-absorbing mesh plate 2011 has a plurality of first mesh holes 20111, the fixed base plate 2012 has a connecting hole 20121, and the second noise-absorbing mesh plate 2013 has a plurality of second mesh holes 20131. The plurality of first mesh holes 20111 are respectively opposite to the connecting hole 20121, and the plurality of second mesh holes 20131 are respectively opposite to the connecting hole 20121. The positions of the plurality of first mesh holes 20111 and the plurality of second mesh holes 20131 are relatively staggered.

[0071] Please see Figures 13 to 17 In some embodiments of this application, the connecting hole 20121 is a strip-shaped through hole extending along the length direction of the fixed substrate 2012. The areas of the first sound-absorbing mesh plate 2011 opposite to the connecting hole 20121 are each distributed with a plurality of first mesh holes 20111. The areas of the second sound-absorbing mesh plate 2013 opposite to the connecting hole 20121 are each distributed with a plurality of second mesh holes 20131. The positions of the first mesh holes 20111 in the first sound-absorbing mesh plate and the second mesh holes 20131 in the second sound-absorbing mesh plate are relatively staggered, that is, the first mesh holes 20111 in the first sound-absorbing mesh plate and the second mesh holes 20131 in the second sound-absorbing mesh plate are not opposite each other.

[0072] In some embodiments of this application, the first sound-absorbing perforated plate 2011 and the fixed substrate 2012 can be bonded together using a first double-sided adhesive layer 2014, wherein the first double-sided adhesive layer 2014 is arranged around the connecting hole 20121 to prevent the first double-sided adhesive layer 2014 from blocking the connecting hole 20121. The second sound-absorbing perforated plate 2013 and the fixed substrate 2012 can be bonded together using a second double-sided adhesive layer 2015, wherein the second double-sided adhesive layer 2015 is arranged around the connecting hole 20121 to prevent the second double-sided adhesive layer 2015 from blocking the connecting hole 20121.

[0073] Please see Figure 16 The two sides of the aforementioned fixed base plate 2012 extend beyond the sound-absorbing mesh plate and serve as plug-in structures for mounting onto the mounting plate 210, thereby fixing the sound-absorbing plug-in plate 2010.

[0074] In this embodiment, the silencing insert 2010 includes a first silencing mesh plate 2011, a fixed base plate 2012, and a second silencing mesh plate 2013 stacked sequentially. The first silencing mesh plate 2011 has a plurality of first mesh holes 20111, the fixed base plate 2012 has a connecting hole 20121, and the second silencing mesh plate 2013 has a plurality of second mesh holes 20131. The plurality of first mesh holes 20111 are respectively opposite to the connecting hole 20121, and the plurality of second mesh holes 20131 are respectively opposite to the connecting hole 20121. The positions of the plurality of first mesh holes 20111 and the plurality of second mesh holes 20131 are staggered. Thus, because the first silencing mesh plate 2011... The first and second sound-absorbing perforated plates 2013 are densely arranged with perforations, and the perforations in the two layers of sound-absorbing perforated plates are staggered, which can achieve better sound wave attenuation and thus improve the sound absorption effect. The air in the first sub-channel 231 can flow into the second sub-channel 232 through the channel formed by the first perforation 20111, the connecting hole 20121 and the second perforation 20131 in sequence. At the same time, the air in the second sub-channel 232 can flow into the first sub-channel 231 through the channel formed by the second perforation 20131, the connecting hole 20121 and the first perforation 20111 in sequence. This ensures that the air in the air pressure balance channel 230 can flow between the first sub-channel 231 and the second sub-channel 232, which helps to maintain the relative consistency between the internal air pressure and the external air pressure of the electronic equipment.

[0075] Optionally, the first sub-channel 231 includes a first variable cross-section segment 2311, one end of which is located at the position of the silencing insert 2010, and the cross-sectional area of ​​the first variable cross-section segment 2311 gradually decreases along the direction away from the silencing insert 2010.

[0076] The second sub-channel 232 includes a second variable cross-section segment 2321. One end of the second variable cross-section segment 2321 is located at the position of the silencing insert 2010, and the cross-sectional area of ​​the second variable cross-section segment 2321 gradually decreases along the direction away from the silencing insert 2010.

[0077] The aforementioned first variable cross-section segment 2311 can be the entire first sub-channel 231, or it can be a portion of the length direction of the first sub-channel 231. For example, please refer to [link to relevant documentation]. Figure 14, in some embodiments of the present application, the first variable cross-section segment 2311 is a partial area in the length direction of the first sub-channel 231. Correspondingly, the second variable cross-section segment 2321 may be the entire second sub-channel 232 or a partial area in the length direction of the second sub-channel 232. For example, please refer to Figure 14 , in some embodiments of the present application, the second variable cross-section segment 2321 is the entire second sub-channel 232. And the first variable cross-section segment 2311 and the second variable cross-section segment 2321 are symmetrically distributed with respect to the sound-absorbing insert plate 2010.

[0078] Please refer to Figure 14 , since the cross-sectional area of the first variable cross-section segment 2311 gradually decreases along the direction away from the sound-absorbing insert plate 2010, and the cross-sectional area of the second variable cross-section segment 2321 gradually decreases along the direction away from the sound-absorbing insert plate 2010, therefore, the first variable cross-section segment 2311, the area where the sound-absorbing insert plate 2010 is located, and the second variable cross-section segment 2321 together form a "middle" - shaped groove structure. The sound-absorbing insert plate 2010 is inserted into this structure groove, and the sound-absorbing insert plate 2010 is used to absorb the noise, so as to achieve the purpose of eliminating the noise. The "middle" - shaped structure adopts the design of increasing the middle cross-section, mainly considering that placing the sound-absorbing insert plate 2010 at this position has a lower impact on the channel fluidity compared with the sound-absorbing cotton 291, but there is still a certain impact. Therefore, the "middle" - shaped groove is designed to place the sound-absorbing insert plate 2010 to achieve the purpose of increasing the local cross-sectional area of the channel to compensate for the loss of air permeability.

[0079] The above "middle" - shaped slot is designed on the mounting plate 210. During assembly, the sound-absorbing insert plate is first inserted into the slot, and then the foam adhesive is covered on its top, thereby fixing the position of the sound-absorbing insert plate 2010 in the thickness direction of the whole machine, and at the same time bonding and fixing the lens 300 and the mounting plate 210. The foam adhesive does not break holes above the air pressure balance channel 230 and the sound guiding channel 240, so a closed air pressure balance channel 230 and sound guiding channel 240 can be formed.

[0080] In this embodiment, the first sub-channel 231 includes a first variable cross-section segment 2311, one end of which is located at the position of the muffler plate 2010, and the cross-sectional area of ​​the first variable cross-section segment 2311 gradually decreases along the direction away from the muffler plate 2010; the second sub-channel 232 includes a second variable cross-section segment 2321, one end of which is located at the position of the muffler plate 2010, and the cross-sectional area of ​​the second variable cross-section segment 2321 gradually decreases along the direction away from the muffler plate 2010. This is beneficial to increasing the cross-sectional area of ​​the pressure balance channel 230 at the muffler plate 2010, thereby improving the ventilation of the pressure balance channel 230 at the muffler plate 2010, and further improving the overall ventilation of the pressure balance channel 230.

[0081] Optionally, the air pressure balancing channel 230 is a curved channel that has undergone at least two bends.

[0082] because Figure 7 In practical design, the illustrated embodiment requires sufficient space on the camera trim 200 to accommodate a resonant cavity. However, some models may have design limitations that prevent providing enough space for such a cavity. In this case, noise cancellation can be achieved through an acoustic labyrinth design.

[0083] Among them, the acoustic maze can extend the propagation path of sound waves. The sound refracts back and forth between the channel walls. When the channel bends or the cross-sectional area changes abruptly, it will amplify or suppress the sound of specific frequencies. Specifically, the size can be optimized through simulation. The extended channel, combined with the repeated refraction of sound, can achieve better sound filtering.

[0084] It is understood that the air pressure balance channel 230 can be an acoustic labyrinth channel. The specific shape of the air pressure balance channel 230 can be set as needed; for example, please refer to [reference needed]. Figure 18 and Figure 19 In some embodiments of this application, the air pressure balance channel 230 is S-shaped. The S-shaped acoustic labyrinth air pressure balance channel 230 is designed to ensure good ventilation while enhancing noise absorption.

[0085] In this embodiment, the air pressure balance channel 230 is a curved channel with at least two bends, which makes the air pressure balance channel 230 form an acoustic labyrinth channel to eliminate noise within the air pressure balance channel 230.

[0086] Optionally, the inner wall of the air pressure balance channel 230 is provided with a sound-absorbing coating, or the bends of the air pressure balance channel 230 are filled with porous sound-absorbing cotton.

[0087] The sound-absorbing coating can be applied to the inner wall of the bend area of ​​the air pressure balance channel 230 to eliminate noise within the air pressure balance channel 230.

[0088] The aforementioned porous sound-absorbing cotton can refer to sound-absorbing cotton 291 with multiple through holes.

[0089] The aforementioned acoustic labyrinth channel is designed on the mounting plate 210, with foam adhesive covering its top to bond and fix the lens 300 to the mounting plate 210. The foam adhesive has no holes above the air pressure balance channel 230 and the sound guide channel 240, thus forming a closed air pressure balance channel 230 and sound guide channel 240.

[0090] In this embodiment, by coating the air pressure balance channel 230 with a sound-absorbing coating or by adding porous sound-absorbing cotton locally at the bending position, the noise reduction effect in the air pressure balance channel 230 can be further improved.

[0091] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. An electronic device, characterized in that, The device includes a housing, a camera trim, a lens, and an acoustic device. The camera trim is disposed on the housing, the lens covers the side of the camera trim that faces away from the housing, and the acoustic device is disposed inside the electronic device. The lens has a first through hole, and the camera decorative part has an air pressure balance channel and a sound guide channel. One end of the air pressure balance channel is connected to the internal space of the electronic device, and the other end of the air pressure balance channel is connected to the first through hole. One end of the sound guide channel is connected to the acoustic device, and the other end of the sound guide channel is connected to the first through hole.

2. The electronic device according to claim 1, characterized in that, The camera decorative component has a noise reduction structure, which is connected to the air pressure balance channel to absorb noise flowing through the air pressure balance channel.

3. The electronic device according to claim 2, characterized in that, The noise reduction structure includes a Helmholtz resonant cavity, the neck of which is connected to the air pressure balance channel, and the resonant frequency of the Helmholtz resonant cavity is located within the frequency range corresponding to the noise.

4. The electronic device according to claim 3, characterized in that, The noise reduction structure includes at least two Helmholtz resonant cavities, and the necks of different Helmholtz resonant cavities are connected to different positions of the air pressure balance channel.

5. The electronic device according to claim 2, characterized in that, The noise reduction structure includes sound-absorbing cotton, which is embedded in the air pressure balance channel.

6. The electronic device according to claim 5, characterized in that, The sound-absorbing cotton includes multiple through holes, and the through holes in the sound-absorbing cotton are used to connect the first through hole with the internal space of the electronic device.

7. The electronic device according to claim 2, characterized in that, The noise reduction structure includes a sound-absorbing insert plate, which is inserted into the air pressure balance channel and divides the air pressure balance channel into a first sub-channel and a second sub-channel. The first sub-channel extends from the first through hole to the sound-absorbing insert plate, and the second sub-channel extends from the sound-absorbing insert plate to the internal space of the electronic device.

8. The electronic device according to claim 7, characterized in that, The noise-absorbing plate includes a first noise-absorbing perforated plate, a fixed base plate, and a second noise-absorbing perforated plate stacked in sequence. The first noise-absorbing perforated plate has a plurality of first mesh holes, the fixed base plate has a connecting hole, and the second noise-absorbing perforated plate has a plurality of second mesh holes. The plurality of first mesh holes are respectively opposite to the connecting hole, and the plurality of second mesh holes are respectively opposite to the connecting hole. The positions of the plurality of first mesh holes and the plurality of second mesh holes are staggered.

9. The electronic device according to claim 8, characterized in that, The first sub-channel includes a first variable cross-section segment, one end of which is located at the position of the silencing insert plate, and the cross-sectional area of ​​the first variable cross-section segment gradually decreases along the direction away from the silencing insert plate. The second sub-channel includes a second variable cross-section segment. One end of the second variable cross-section segment is located at the position of the silencing insert, and the cross-sectional area of ​​the second variable cross-section segment gradually decreases along the direction away from the silencing insert.

10. The electronic device according to claim 1, characterized in that, The pressure balancing channel is a curved channel that has been bent at least twice.

11. The electronic device according to claim 10, characterized in that, The inner wall of the air pressure balance channel is provided with a sound-absorbing coating, or the bends of the air pressure balance channel are filled with porous sound-absorbing cotton.

Images