Protective sleeve and electronic equipment assembly

Abstract

The utility model discloses a protective sleeve and an electronic equipment assembly, the protective sleeve is applied to electronic equipment, the protective sleeve comprises a sleeve body, the sleeve body comprises a bottom plate and a frame, the bottom plate is provided with a through hole, and the frame is connected with the bottom plate and surrounds the peripheral side of the bottom plate; the protection part is arranged on the bottom plate, and the protection part protrudes out of the outer surface of the bottom plate and at least partially surrounds the periphery of the through hole; wherein the protection part is provided with a sound output adjusting structure, and the sound output adjusting structure is used for adjusting the propagation path of sound waves.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of electronic device accessories, and particularly relates to a protective sleeve and an electronic device assembly. BACKGROUND

[0002] In the related art, with the increase of the camera decoration cover, some designs place the loudspeaker on the side of the camera decoration cover, and adopt a normal sound emission mode. This setting mode has a simple sound emission channel and relatively abundant space, and has achieved significant improvement in volume and sound quality.

[0003] However, in actual use, many users often place the electronic device on a desktop to play audio or video content. In a scenario where the screen 1' is placed upward, as shown in Figure 21 and Figure 22 , due to the presence of the camera decoration cover 2', the electronic device as a whole forms an included angle a2 with the desktop. The loudspeaker at the back can emit sound through the included angle. However, as shown in Figure 21 and Figure 23 , in this posture, the direct sound emitted by the loudspeaker at the back and the sound wave reflected by the desktop (as shown by the arrow in Figure 21 ) are coupled in the air, which causes the problem of sharp and harsh sound and poor listening experience, affecting the sound emission effect. CONTENT OF THE UTILITY MODEL

[0004] The present application aims to provide a protective sleeve and an electronic device assembly, which at least solve the problem of sharp and harsh sound, poor listening experience, and poor sound emission effect in a scenario where the screen of the electronic device is placed upward.

[0005] To solve the above technical problems, the present application is implemented as follows:

[0006] In a first aspect, the present application provides a protective sleeve, which is applied to an electronic device. The protective sleeve comprises: a sleeve body, the sleeve body comprising a bottom plate and a frame, the bottom plate being provided with a through hole, and the frame being connected with the bottom plate and surrounding a periphery of the bottom plate; and a protection part, which is arranged on the bottom plate and protrudes from an outer surface of the bottom plate and at least partially surrounds a periphery of the through hole. The protection part is provided with an sound emission adjusting structure, which is used for adjusting a propagation path of sound waves.

[0007] In a second aspect, the present application provides an electronic device assembly, which comprises: an electronic device, the electronic device comprising a shell, the shell comprising a camera decoration cover, and the camera decoration cover being provided with a sound emission hole; and the protective sleeve according to any one of the above, the sleeve body being capable of being sleeved on the shell, the camera decoration cover being at least partially accommodated in the protection part, and the sound emission adjusting structure being used for adjusting a propagation path of sound waves emitted by the sound emission hole.

[0008] In embodiments of this application, the protective cover includes a cover body and a protective part. The cover body includes a base plate and a frame, with the frame surrounding the base plate. The protective part is located on the base plate, protruding from the outer surface of the base plate and at least partially surrounding the through hole to protect structures extending into the through hole. The protective part includes a sound output adjustment structure, which can adjust the propagation path of sound waves. Therefore, when the back of the electronic device equipped with the protective cover is placed on a surface, the adjustment of the sound output structure can prevent the sound waves from being affected by the surface and producing sharp, harsh sounds, thus improving the speaker's sound output performance.

[0009] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0010] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0011] Figure 1 This is one of the structural schematic diagrams of an electronic device component according to an embodiment of this application;

[0012] Figure 2 yes Figure 1 A sectional view along line AA of the embodiment shown;

[0013] Figure 3 This is a second schematic diagram of the structure of an electronic device component according to an embodiment of this application;

[0014] Figure 4 yes Figure 3 A BB-direction sectional view of the embodiment shown;

[0015] Figure 5 This is a third schematic diagram of the structure of an electronic device component according to an embodiment of this application;

[0016] Figure 6 This is the fourth schematic diagram of the structure of an electronic device component according to an embodiment of this application;

[0017] Figure 7 This is one of the structural schematic diagrams of the protective sleeve according to an embodiment of this application;

[0018] Figure 8 This is a second schematic diagram of the structure of the protective sleeve according to an embodiment of this application;

[0019] Figure 9 These are test diagrams of abnormal noises from electronic device components according to embodiments of this application;

[0020] Figure 10This is the fifth schematic diagram of the structure of an electronic device component according to an embodiment of this application;

[0021] Figure 11 This is a sixth schematic diagram of the structure of an electronic device component according to an embodiment of this application;

[0022] Figure 12 This is the seventh schematic diagram of the structure of an electronic device component according to an embodiment of this application;

[0023] Figure 13 This is the eighth schematic diagram of the structure of an electronic device component according to an embodiment of this application;

[0024] Figure 14 This is the ninth schematic diagram of the structure of an electronic device component according to an embodiment of this application;

[0025] Figure 15 This is the third schematic diagram of the structure of the protective sleeve according to an embodiment of this application;

[0026] Figure 16 This is the fourth structural schematic diagram of the protective sleeve according to an embodiment of this application;

[0027] Figure 17 This is the fifth schematic diagram of the structure of the protective sleeve according to an embodiment of this application;

[0028] Figure 18 This is the sixth schematic diagram of the structure of the protective sleeve according to an embodiment of this application;

[0029] Figure 19 This is one of the structural schematic diagrams of an electronic device according to an embodiment of this application;

[0030] Figure 20 This is a second schematic diagram of the structure of an electronic device according to an embodiment of this application.

[0031] Figure label:

[0032] 1. Protective cover, 10. Cover body, 102. First end, 104. Second end, 12. Base plate, 120. Through hole, 14. Frame, 16. Protective part, 160. Protective cover, 162. Light hole, 164. Raised ring, 18. Sound adjustment structure, 180. Sound guide channel, 182. Boss, 19. Sound absorption structure, 190. Resonant cavity, 192. Sound absorption channel, 2. Electronic equipment, 20. Housing, 200. Camera decorative cover, 202. Sound hole.

[0033] Figure 21 This is one of the structural schematic diagrams of electronic devices in related technologies;

[0034] Figure 22 This is the second schematic diagram of the structure of an electronic device in related technologies;

[0035] Figure 23This is a test diagram for abnormal noises in electronic devices in related technologies.

[0036] Figure label:

[0037] 1' Screen, 2' Camera decorative cover. Detailed Implementation

[0038] The embodiments of this application will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0039] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0040] In the description of this application, it should be understood that the terms "center", "length", "upper", "lower", "horizontal", "top", "bottom", "inner", "outer", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0041] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0042] The following is combined Figures 1-20 This application describes a protective case and an electronic device assembly according to embodiments thereof.

[0043] like Figure 1 , Figure 2 , Figure 5 , Figure 10 , Figure 11 , Figure 19 and Figure 20As shown, according to some embodiments of this application, a protective sleeve 1 is applied to an electronic device 2. The protective sleeve 1 includes: a sleeve body 10, which includes a base plate 12 and a frame 14. The base plate 12 is provided with a through hole 120, and the frame 14 is connected to the base plate 12 and surrounds the periphery of the base plate 12; a protective part 16 is provided on the base plate 12, which protrudes from the outer surface of the base plate 12 and at least partially surrounds the through hole 120; wherein, the protective part 16 is provided with a sound output adjustment structure 18, which is used to adjust the propagation path of the sound wave.

[0044] In the embodiments of this application, the protective cover 1 includes a cover body 10 and a protective part 16. The cover body 10 includes a base plate 12 and a frame 14. The frame 14 surrounds the base plate 12. The protective part 16 is disposed on the base plate 12, protrudes from the outer surface of the base plate 12, and at least partially surrounds the through hole 120 on the base plate 12. The protective part 16 is provided with a sound output adjustment structure 18, which can adjust the propagation path of sound waves. Therefore, when the back of the electronic device 2 equipped with the protective cover 1 is placed on a placement surface, the adjustment of the sound output adjustment structure 18 can prevent the sound waves from being affected by the placement surface and producing a sharp, harsh sound, thus improving the sound output effect of the speaker.

[0045] Understandably, the protective cover 1 can be fitted onto the electronic device 2, thereby protecting the electronic device 2. The electronic device 2 includes a housing 20 and a speaker. The speaker's sound outlet 202 is located on the camera decorative cover 200, which significantly improves the volume and sound quality. Furthermore, when the protective cover 1 is fitted onto the electronic device 2, the camera decorative cover 200 of the electronic device 2 is at least partially housed in the protective part 16, thereby protecting the camera decorative cover 200 from damage after impact. The speaker is connected to the sound outlet 202 and emits sound through the sound outlet 202. The sound adjustment structure 18 can adjust the propagation path of the sound waves emitted from the sound outlet 202.

[0046] Optionally, the speaker is positioned near or on the camera cover 200, where the camera cover 200 has a large space, which can significantly improve the volume and sound quality of the speaker.

[0047] like Figure 5 , Figure 6 , Figure 7 and Figure 8As shown, according to some embodiments of this application, optionally, the protective part 16 includes: a protective cover 160, the protective cover 160 is located on the outer surface of the base plate 12 and covers the through hole 120 so that the side wall of the protective cover 160 surrounds the through hole 120; the sound output adjustment structure 18 includes a sound guiding channel 180, the sound guiding channel 180 is disposed on the inner bottom wall of the protective cover 160 and penetrates the side wall of the protective cover 160, and the sound guiding channel 180 is used to adjust the propagation path of the sound wave.

[0048] In this embodiment, the protective part 16 includes a protective cover 160, which covers the outside of the through hole 120 to achieve comprehensive protection of the camera decorative cover 200, thereby improving the protective effect. The sound adjustment structure 18 includes a sound guiding channel 180, which is disposed on the inner bottom wall of the protective cover 160 and extends through the side wall of the protective cover 160. This allows sound waves to propagate along the sound guiding channel 180 and then be emitted from the side wall of the protective cover 160, changing the direction of sound wave propagation and reducing reflections caused by sound perpendicularly reaching the placement surface. This reduces the mid-to-high frequency components of the overall sound, and even if there is liquid on the placement surface, the speaker on the back of the electronic device 2 will not draw liquid into the sound cavity when it is operating.

[0049] Specifically, the sound waves emitted by the loudspeaker can travel along... Figure 2 and Figure 4 The sound waves propagate in the direction indicated by the middle arrow, changing the direction of sound wave propagation. When the electronic device 2, covered with the protective sleeve 1, is placed on the surface, the sound waves can propagate along... Figure 5 The sound propagates in the direction indicated by the middle arrow, which can reduce reflected sound.

[0050] like Figure 3 , Figure 4 and Figure 7 As shown, according to some embodiments of this application, optionally, there are multiple sound guiding channels 180, the multiple sound guiding channels 180 are interconnected, and the intersection of the multiple sound guiding channels 180 is used for sound waves to enter.

[0051] In this embodiment, there are multiple sound guide channels 180, which are interconnected, so that each sound guide channel 180 is set on the inner bottom wall of the protective cover 160 and extends through the side wall of the protective cover 160, thereby realizing sound output from multiple directions and improving the sound output effect.

[0052] Optionally, the intersections of the multiple sound guide channels 180 are positioned opposite to the sound outlet 202.

[0053] Optionally, along the length of the sound guide channel 180, both ends of the sound guide channel 180 penetrate the sidewall of the protective cover 160.

[0054] According to some embodiments of this application, optionally, the sound channel 180 is open at one end toward the through hole 120.

[0055] In this embodiment, the sound guide channel 180 is open at one end facing the through hole 120, thereby ensuring that the sound emitted by the speaker is directly transmitted to the sound guide channel 180 and reducing sound wave loss.

[0056] like Figure 7 As shown, according to some embodiments of this application, optionally, the protective cover 160 is provided with at least one light-transmitting hole 162, which is disposed opposite to the camera of the electronic device 2.

[0057] In this embodiment, the protective cover 160 is provided with at least one light-transmitting hole 162, which is used to transmit light to the camera of the electronic device 2 to ensure the camera's shooting function.

[0058] like Figure 10 , Figure 11 , Figure 12 , Figure 13 and Figure 14 As shown, according to some embodiments of this application, optionally, the sound output adjustment structure 18 includes a boss 182, which is located at the end of the protective part 16 away from the base plate 12. The boss 182 is used to adjust the height between the center of the through hole 120 and the placement surface of the protective sleeve 1, so as to adjust the propagation path of the sound wave.

[0059] In this embodiment, the sound output adjustment structure 18 includes a boss 182, which is disposed at the end of the protective part 16 away from the base plate 12. Since the protective part 16 protrudes from the outer surface of the base plate 12, the boss 182, after being disposed at the end of the protective part 16 away from the base plate 12, can increase the distance between the center of the through hole 120 and the placement surface of the protective sleeve 1, thereby adjusting the distance H between the sound outlet 202 and the placement surface of the protective sleeve 1, changing the propagation path of the sound wave to reduce reflected sound and reduce the risk of inhaling liquid.

[0060] like Figure 10 and Figure 11 As shown, according to some embodiments of this application, optionally, along the length direction of the sleeve 10, the sleeve 10 includes a first end 102 and a second end 104 disposed opposite to each other; the protective part 16 is disposed near the first end 102, and the boss 182 is located on the side of the protective part 16 near the second end 104.

[0061] In this embodiment, along the length of the sleeve 10, the sleeve 10 includes a first end 102 and a second end 104 disposed opposite to each other. The protective part 16 is disposed near the first end 102 of the sleeve 10. When the electronic device 2 covered with the protective sleeve 1 is placed on the placement surface, the second end 104 of the protective sleeve 1 and the part of the protective part 16 near the second end 104 contact the placement surface, causing the first end 102 of the protective sleeve 1 to be raised. This results in a certain distance between the plane where the through hole 120 is located and the placement surface, which in turn results in a certain distance between the sound outlet 202 of the electronic device and the placement surface. Sound waves are transmitted through this distance. The boss 182 is located at the end of the protective part 16 near the second end 104. The protective sleeve 1 contacts the placement surface through the boss 182, increasing the angle α1 between the whole device and the placement surface, and also increasing the distance H between the sound outlet 202 of the electronic device and the placement surface, thereby reducing reflected sound and reducing the risk of inhaling liquid.

[0062] It is understandable that the boss 182 is located on the side of the protective part 16 away from the base plate 12, and on the side of the protective part 16 closer to the second end 104, so that the boss 182 is both located on the top of the protective part 16 and closer to the second end 104 of the sleeve 10, thereby the boss 182 can be supported on the protective surface to increase the included angle α1 between the electronic device 2 covered with the protective sleeve 1 and the protective surface.

[0063] Optionally, the distance between the sound outlet 202 and the placement surface is greater than or equal to 2 mm.

[0064] Optionally, the distance between the sound outlet 202 and the placement surface is greater than or equal to 2.5 mm and less than or equal to 15 mm.

[0065] like Figure 14 , Figure 15 , Figure 16 and Figure 17 As shown, according to some embodiments of this application, optionally, the protective part 16 includes: a protruding ring 164, the protruding ring 164 surrounding the through hole 120, and a boss 182 disposed at the end of the protruding ring 164 away from the base plate 12.

[0066] In this embodiment, the protective part 16 includes a protruding ring 164, which surrounds the through hole 120. That is, the entire protective sleeve 1 is disposed through the through hole 120 to reduce obstruction of the camera and sound output hole 202 of the electronic device, ensuring both shooting and sound output performance. The boss 182 is located at the end of the protruding ring 164 away from the base plate 12. Therefore, when the electronic device 2 with the protective sleeve 1 is placed on the placement surface, the distance H between the sound output hole 202 and the placement surface is increased, and the angle α1 between the entire device and the placement surface is increased, thereby reducing reflected sound and lowering the risk of liquid inhalation.

[0067] Optionally, when the protective cover 1 is fitted onto the electronic device 2, the camera decorative cover 200 is at least partially located within the area enclosed by the protruding ring 164.

[0068] Optionally, the protruding ring 164 and the boss 182 are integral structures, specifically, the protruding ring 164 and the boss 182 are integrally formed.

[0069] like Figure 13 and Figure 14 As shown, according to some embodiments of this application, optionally, the convex ring 164 is provided with a sound-absorbing structure 19, which is used to absorb sound waves of a preset frequency.

[0070] In this embodiment, the convex ring 164 is provided with a sound-absorbing structure 19. The sound-absorbing structure 19 is used to absorb sound waves of a preset frequency. When the electronic device 2 covered with the protective cover 1 is placed on the placement surface, the reflected sound waves formed by the placement surface reach the protective cover 1 and are initially filtered out by the sound-absorbing structure 19, thereby achieving a passive noise reduction effect, filtering out unwanted noise, and improving the sound output effect.

[0071] Optionally, the preset frequency of the sound wave can be set according to the actual situation. For example, the preset frequency includes mid-to-high frequency sound wave components from 3000Hz to 8000Hz.

[0072] like Figure 13 , Figure 14 , Figure 16 , Figure 17 and Figure 18 As shown, according to some embodiments of this application, optionally, the sound-absorbing structure 19 includes: a resonant cavity 190, which is disposed at one end of the convex ring 164 facing the inner side of the sleeve 10 along the center line L of the through hole 120, and the resonant cavity 190 is open at one end facing the inner side of the sleeve 10; at least one sound-absorbing channel 192, one end of which is connected to the resonant cavity 190, and the other end of which passes through the end of the convex ring 164 facing the outer side of the sleeve 10.

[0073] In this embodiment, the sound-absorbing structure 19 includes a resonant cavity 190 and at least one sound-absorbing channel 192. The resonant cavity 190 is disposed at one end of the convex ring 164 facing the inner side of the sleeve 10 and is open. One end of the sound-absorbing channel 192 is connected to the resonant cavity 190, and the other end passes through the end of the convex ring 164 facing the outer side of the sleeve 10. Thus, when the electronic device 2 covered with the protective sleeve 1 is placed on the placement surface, the sound waves emitted by the speaker pass through the placement surface, and the reflected sound waves reach the protective sleeve 1. The sound-absorbing structure 19 initially filters out the preset frequency components, thereby achieving a passive noise reduction effect and reducing sound noise.

[0074] According to some embodiments of this application, the sound-absorbing structure 19 may optionally include: sound-absorbing cotton disposed within the resonant cavity 190.

[0075] In this embodiment, the sound-absorbing structure 19 also includes sound-absorbing cotton, which is disposed in the resonant cavity 190 and can absorb sound waves of a preset frequency to reduce sound noise.

[0076] According to some embodiments of this application, optionally, the number of resonant cavities 190 is multiple, and the multiple resonant cavities 190 are arranged at intervals along the circumference of the through hole 120; or the resonant cavities 190 are arranged in a ring along the circumference of the through hole 120.

[0077] In this embodiment, the resonant cavity 190 can be a plurality of circumferentially spaced along the through hole 120, or it can be a ring structure, to achieve absorption of sound waves of different frequencies.

[0078] According to some embodiments of this application, optionally, the length of the resonant cavity 190 along the circumferential direction of the through hole 120 is greater than or equal to 10.62 mm and less than or equal to 28.3 mm.

[0079] In this embodiment, the length of the resonant cavity 190 along the circumference of the through hole 120 is greater than or equal to 10.62 mm and less than or equal to 28.3 mm. Therefore, the wavelength range that can be filtered is from 42.5 mm to 113.3 mm, thereby filtering out high-frequency sound wave components from 3000 Hz to 8000 Hz.

[0080] It should be noted that when filtering out high-frequency sound wave components from 3000Hz to 8000Hz, by substituting into the formula, where c is the sound velocity calculated at 340m / s and f is the frequency, the range of sound wavelengths to be filtered is 42.5mm to 113.3mm; then dividing by 4, the length of the resonant cavity 190 is mainly set within the range of 10.62mm to 28.3mm.

[0081] According to some embodiments of this application, optionally, the sleeve 10 and the protective part 16 are an integral structure.

[0082] In this embodiment, the sleeve 10 and the protective part 16 are an integral structure, which improves the overall strength of the protective sleeve 1 and the smoothness of the connection between the sleeve 10 and the protective part 16, thereby avoiding the situation of uneven installation when the electronic device 2 is covered.

[0083] Optionally, the sleeve 10 and the protective part 16 are integrally molded structures.

[0084] like Figures 1 to 6 , Figures 10 to 14As shown, according to one embodiment of this application, this application proposes an electronic device assembly, including: an electronic device 2, the electronic device 2 including a housing 20, the housing 20 including a camera decorative cover 200, the camera decorative cover 200 having a sound outlet 202; and a protective sleeve 1 as described above, the sleeve body 10 being able to be fitted onto the housing 20, the camera decorative cover 200 being at least partially housed in the protective portion 16, and the sound outlet adjustment structure 18 being used to adjust the propagation path of the sound waves emitted from the sound outlet 202.

[0085] According to the electronic device component proposed in this application, the protective sleeve 1 can be fitted onto the electronic device 2 to protect it. The electronic device 2 includes a housing 20 and a speaker. The speaker's sound outlet 202 is disposed on the camera decorative cover 200, which significantly improves the volume and sound quality. Furthermore, when the protective sleeve 1 is fitted onto the electronic device 2, the camera decorative cover 200 of the electronic device 2 is at least partially housed in the protective part 16, thereby protecting the camera decorative cover 200 from damage after impact. At the same time, the protective part 16 is provided with a sound output adjustment structure 18, which can adjust the propagation path of the sound waves emitted from the sound outlet 202. Thus, when the back of the electronic device 2 equipped with the protective sleeve 1 is placed on a surface, the adjustment of the sound output adjustment structure 18 can prevent the sound waves from being affected by the surface and producing a sharp and harsh sound, thereby improving the speaker's sound output effect.

[0086] Optionally, the electronic device 2 also includes a speaker and a display screen. The display screen is disposed on one side of the electronic device 2, and the speaker is disposed on the housing 20 and communicates with the sound outlet 202. When the protective cover 1 is placed on the electronic device 2, the display screen is exposed in the protective cover 1 and is disposed opposite to the bottom plate 12 of the protective cover 1.

[0087] Optionally, the speaker is located near or on the camera cover 200.

[0088] Optionally, electronic device 2 includes mobile phones, tablets, etc.

[0089] According to some embodiments of this application, optionally, the sound output mode of the rear speaker is changed from front sound output to side sound output, which does not occupy the internal space of the mobile phone, improves the overall reliability of the device and reduces the high frequency components in the reflected sound; by adding a protrusion 182 on the protective case 1, the angle between the device and the table is increased, and the reflected sound is reduced; and a sound-absorbing structure 19 is processed in the internal space of the protective case 1 to passively absorb the high frequency reflected sound.

[0090] As the first embodiment of this application, a baffle structure (forming a protective cover 160) is added to the back speaker outlet 202 position on the basis of the traditional protective cover 1, changing the front sound outlet to the side sound outlet, reducing the sound propagation path at the angle.

[0091] The protective case 1 has a protection zone and a sound guide channel 180 corresponding to the position of the sound outlet 202. For the speaker with sound coming from the back, the sound comes out from the camera decorative cover 200, passes through the sound outlet 202, and then propagates in the sound guide channel 180 formed by the protective case 1 and the camera decorative cover 200, and is emitted through the sound outlet 202 on the side of the protective case 1.

[0092] After optimization of the sound guide channel 180 on the protective cover 1, the sound is directed from the side, reducing reflections caused by the sound arriving vertically on the desktop, reducing the mid-high frequency components of the overall sound, and even if there is liquid on the desktop, the rear speaker will not draw liquid into the sound cavity when it is working. Test data is as follows. Figure 9 As shown.

[0093] As can be seen, the first embodiment of this application can significantly improve the risk of liquid ingress into the speaker's sound outlet 202 and the sound quality degradation caused by desktop reflections, but it still has other problems, such as:

[0094] (1) Because the sound output direction is changed from vertical to horizontal, the sound guiding direction is rotated by 90°, which affects the ventilation of the channel.

[0095] (2) The sound guide channel 180 is greatly affected by the gap between the protective cover 1 and the decorative cover. If the height of the sound guide channel 180 is too large, the protective cover 1 will bulge significantly on the surface of the camera decorative cover 200, affecting the overall aesthetics and consistency. If the height of the sound guide channel 180 is reduced, the sound output area will be reduced, causing poor airflow and leading to noise risk.

[0096] As a second embodiment of this application, based on the traditional mobile phone protective case 1, a fulcrum (e.g., a protrusion 182) is added to a part of the protective case 1 to increase the angle between the whole phone and the table, so that the distance between the sound hole 202 and the table reaches 2.5mm, thereby reducing reflected sound and reducing the risk of inhaling liquid.

[0097] like Figures 10 to 17 As shown, this is an overall schematic diagram of Embodiment 2 of this application. A protrusion 182 is added locally to the protective sleeve 1 at the corresponding position of the camera decorative cover 200, raising the Z-axis height of the sound outlet 202 relative to the desktop. A ring of sound-absorbing holes (e.g., sound-absorbing channel 192) and a resonant channel (e.g., resonant cavity 190) are processed on the protective sleeve 1 to absorb high-frequency reflected sound.

[0098] When the device is placed on a table, the presence of the 182 support points on the protrusion raises the back of the phone to a certain extent, and the Z-axis height between the sound hole 202 and the table reaches 2.5mm. This prevents the speaker from sucking in liquid from the table and reduces table reflection to a certain extent, thereby improving reliability and audio performance and enhancing the user experience.

[0099] like Figure 17 and Figure 18 As shown, a ring of sound-absorbing holes and a resonant channel are machined inside the protective sleeve 1. The sound-absorbing principle of a 1 / 4 wavelength tube is used, that is, when the length of the resonant channel reaches one-quarter of the wavelength corresponding to a certain frequency, the resonant channel can reduce the noise of the sound wave at this frequency and reduce its sound wave energy.

[0100] Based on the measured frequency response results, it is mainly necessary to filter out the mid-to-high frequency sound wave components in the 3000Hz to 8000Hz range. Substituting into the formula, where c is the sound velocity calculated at 340m / s and f is the frequency, the wavelength range to be filtered is found to be 42.5mm to 113.3mm. Dividing by 4, the length of the resonant channel is mainly set within the range of 10.62mm to 28.3mm. When the speaker is placed horizontally and the rear speaker is facing the table to play music, the sound waves emitted from the rear speaker are reflected by the table. When the reflected sound waves reach the protective sleeve 1, the high-frequency reflected components are initially filtered out by the sound-absorbing structure 19 inside the protective sleeve 1, achieving a passive noise reduction effect. Compared to the first implementation method, this method improves the dependence of the sound outlet 202 on the space between the protective sleeve 1 and the whole unit.

[0101] The sound-absorbing structure 19 is not limited to the form of a resonant channel; it can also use structures or materials such as sound-absorbing cotton.

[0102] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0103] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A protective case, characterized in that, The protective case is applied to electronic devices, and the protective case includes: A sleeve body, the sleeve body including a base plate and a frame, the base plate having a through hole, and the frame being connected to the base plate and surrounding the periphery of the base plate; A protective part is provided on the base plate, the protective part protrudes from the outer surface of the base plate and at least partially surrounds the through hole; The protective part is equipped with a sound emission adjustment structure, which is used to adjust the propagation path of the sound waves.

2. The protective sleeve according to claim 1, characterized in that, The protective part includes: A protective cover is located on the outer surface of the base plate and covers the through hole so that the sidewalls of the protective cover surround the through hole; The sound output adjustment structure includes a sound guiding channel, which is located on the inner bottom wall of the protective cover and extends through the side wall of the protective cover. The sound guiding channel is used to adjust the propagation path of the sound waves.

3. The protective sleeve according to claim 2, characterized in that, The number of sound guiding channels is multiple, and these channels are interconnected and intersected, with the intersections used for sound wave entry; and / or The sound guide channel is open at one end facing the through hole.

4. The protective sleeve according to claim 1, characterized in that, The sound output adjustment structure includes a boss located at the end of the protective part away from the base plate. The boss is used to adjust the height between the center of the through hole and the placement surface of the protective sleeve, so as to adjust the propagation path of the sound wave.

5. The protective sleeve according to claim 4, characterized in that, Along the length direction of the sleeve, the sleeve includes a first end and a second end disposed opposite to each other; The protective part is disposed near the first end, and the boss is located on the side of the protective part near the second end.

6. The protective sleeve according to claim 4, characterized in that, The protective part includes: A raised ring is provided around the through hole, and a boss is provided at the end of the raised ring away from the base plate.

7. The protective sleeve according to claim 6, characterized in that, The convex ring is provided with a sound-absorbing structure, which is used to absorb sound waves of a preset frequency.

8. The protective sleeve according to claim 7, characterized in that, The sound-absorbing structure includes: The resonant cavity is located at the end of the convex ring facing the inner side of the sleeve along the center line of the through hole, and the end of the resonant cavity facing the inner side of the sleeve is open. At least one sound-absorbing channel, one end of which is connected to the resonant cavity, and the other end of which passes through the convex ring toward the outer side of the sleeve.

9. The protective sleeve according to claim 8, characterized in that, The sound-absorbing structure also includes: Sound-absorbing cotton is placed inside the resonant cavity; and / or The number of resonant cavities is multiple, and the multiple resonant cavities are spaced apart along the periphery of the through hole; or The resonant cavity is arranged in a ring shape along the circumference of the through hole.

10. An electronic device component, characterized in that, include: An electronic device, the electronic device including a housing, the housing including a camera decorative cover, the camera decorative cover having a sound outlet; and According to any one of claims 1 to 9, the protective sleeve can be fitted onto the housing, the camera decorative cover is at least partially housed in the protective part, and the sound output adjustment structure is used to adjust the propagation path of the sound waves emitted from the sound output hole.

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