Electronic device

Abstract

The present application discloses an electronic device, comprising a housing, a decorative piece, and an elastic sealing piece. The housing is provided with an accommodating space used for accommodating a microphone, the housing comprises a rear cover, and the rear cover is provided with a first through hole. The decorative piece is mounted on the outer side of the rear cover, and is provided with a sound pickup hole communicated with the first through hole. The elastic sealing piece is located in the accommodating space and is mounted between the rear cover and the microphone, and the elastic sealing piece is provided with a second through hole communicating the first through hole with the microphone. The first through hole and the second through hole form a sound pickup channel, and external sound waves enter the sound pickup channel through the sound pickup hole and are conducted to the microphone. According to the electronic device, a sound channel structure can be formed by only sequentially installing the decorative piece, the rear cover and the elastic sealing piece, and compared with the related art, the part machining number and the part assembling number are optimized and reduced, thereby reducing the forming difficulty and the manufacturing cost of the sound channel structure.

Description

Electronic device TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic devices. BACKGROUND

[0002] Active noise-canceling (ANC) is widely used in electronic devices such as earphones and smartphones. It is a technology that uses the phenomenon of phase inversion and mutual cancellation of sound waves to achieve noise reduction.

[0003] When active noise reduction technology is applied to a smartphone, a sound channel structure for guiding external sound waves to a microphone needs to be built on the smartphone.

[0004] In related technologies, the sound channel structure is mainly built by a camera decoration piece, a plastic support, and foam, and the camera decoration piece and the plastic support are fixed with the back cover during assembly. Because there are too many parts, whether the machining process or the assembly process requires high control of the process, which makes it difficult to form the sound channel structure, and in addition, too many parts also lead to high manufacturing costs of the whole machine.

[0005] SUMMARY

[0006] The purpose of the present application is to provide an electronic device that can form a sound channel structure by sequentially installing only three parts: a decoration piece, a back cover, and an elastic sealing piece. Compared with related technologies, the number of parts to be machined or assembled is optimized and reduced, thereby reducing the difficulty of forming the sound channel structure and the manufacturing cost.

[0007] The present application provides an electronic device, which includes a housing, a decoration piece, and an elastic sealing piece.

[0008] The housing has a receiving space for accommodating a microphone, and the housing includes a back cover provided with a first through hole.

[0009] The decoration piece is installed on the outer side of the back cover, and the decoration piece is provided with a sound pickup hole communicating with the first through hole.

[0010] The elastic sealing piece is located in the receiving space and is installed between the back cover and the microphone, and the elastic sealing piece is provided with a second through hole communicating the first through hole with the microphone.

[0011] The first through hole and the second through hole form a sound pickup channel, and external sound waves enter the sound pickup channel through the sound pickup hole and are conducted to the microphone.

[0012] The sound channel structure of the electronic device in the present application mainly consists of a sound pickup hole and a sound pickup channel. The sound pickup hole is arranged on a decoration piece. The sound pickup channel is formed by a first through hole arranged on a back cover and a second through hole arranged on an elastic sealing piece. External sound waves enter the sound pickup channel through the sound pickup hole and are conducted to the microphone to achieve the reception of external sound waves by the microphone. When assembling the components to form the sound channel structure, only the decoration piece, the back cover and the elastic sealing piece need to be installed in sequence. Compared with the related art, the number of parts processing and the number of part assembly are both optimized and reduced, thereby reducing the process control requirements in the part processing and assembly processes, and making the sound channel structure of the present application easier to form. In addition, when the sound channel structure in the present application is applied to the electronic device, the reduction of the parts also reduces the manufacturing cost of the whole machine.

[0013] In addition, in the related art, the sound pickup channel is formed by the hole on the foam and the plastic support, so that the position of the sound pickup channel is limited by the plastic support, which leads to the limitation of the position of the microphone and the microphone cannot be arranged directly below the back cover. In the present application, the sound pickup channel is formed by the back cover and the elastic sealing piece, so that the microphone can be arranged directly below the back cover, and the arrangement position of the microphone is more flexible, and the accommodation space can be fully utilized to optimize the structural design.

[0014] In a possible design, the side of the decoration piece facing the back cover has a first groove. One end of the first groove is in communication with the outside, and the other end is in communication with the first through hole. The groove wall of the first groove and the surface of the back cover form the sound pickup hole.

[0015] The hole opening of the sound pickup hole facing the outside is located on the side of the decoration piece, so that the user's fingers are not easy to block the sound pickup hole when holding the electronic device. Furthermore, the hole opening of the sound pickup hole facing the outside is located at the root of the decoration piece, so that the user is less likely to block the sound pickup hole, thereby ensuring that the microphone can effectively receive external sound waves.

[0016] In a possible design, the side of the decoration piece facing the back cover also has a second groove. The first groove and the first through hole are communicated through the second groove, so that the second groove, the first through hole and the second through hole form the sound pickup channel. The inner volume of the second groove is greater than the inner volume of the first groove.

[0017] When the external sound waves enter the sound pickup channel through the sound pickup hole (or the first groove), Helmholtz resonance will occur in the second groove to amplify the external noise, so that the noise characteristics are more obvious, so that the noise can be more easily received by the microphone, thereby improving the sensitivity of the microphone in collecting noise, and providing more accurate noise information for the active noise reduction module.

[0018] In a possible design, the cross-sectional area of the second groove gradually decreases in a direction from the first groove to the second groove.

[0019] The external sound waves entering the second groove can be converged and guided to the first through hole, so that the sound waves flow in a directional manner and can be fully received by the microphone, further improving the sensitivity of the microphone when collecting noise.

[0020] In a possible design, the opening area of the second groove is greater than the opening area of the first through hole.

[0021] And / or, the opening area of the second through hole is greater than the opening area of the first through hole.

[0022] The decorative piece and the rear cover, and the elastic sealing piece and the rear cover can be conveniently and sealingly installed, and when the position of the first through hole relative to the second groove and the second through hole is adjusted, the decorative piece and the elastic sealing piece are less likely to block the first through hole. In addition, the first through hole has a certain range of offset allowance on the rear cover, and the position of the first through hole on the rear cover does not need to be excessively accurately limited, thereby reducing the processing difficulty of the rear cover.

[0023] In a possible design, a stop structure is arranged at the joint of the decorative piece and the rear cover.

[0024] In a possible design, the stop structure includes a strip-shaped protrusion and a concave plane that is conformal to the strip-shaped protrusion, the strip-shaped protrusion is arranged on one of the decorative piece and the rear cover, and the concave plane is arranged on the other one of the decorative piece and the rear cover.

[0025] The stop structure can play a limiting role and also play a glue blocking role, preventing overflow of the adhesive, and also play an anti-static release role.

[0026] In a possible design, the strip-shaped protrusion and the concave plane are bonded by the adhesive.

[0027] So that the decorative piece and the rear cover are mechanically connected, and better sealing can be achieved at the joint of the two.

[0028] In a possible design, the electronic device further includes a gas-permeable barrier piece, which is installed between the rear cover and the elastic sealing piece and covers the communication position of the first through hole and the second through hole.

[0029] The gas-permeable barrier piece covers the communication position of the first through hole and the second through hole, so that the sound pickup channel can be protected by the gas-permeable barrier piece to prevent external foreign matters from entering, and at the same time, it can also ensure that external sound waves can enter the sound pickup channel and be received by the microphone.

[0030] In a possible design, the electronic device further includes a support installed between the rear cover and the elastic seal, and the support is provided with a third through hole that communicates the first through hole with the second through hole, so that the second groove, the first through hole, the third through hole and the second through hole form a pickup channel.

[0031] If the support interferes with the pickup channel, the support is directly involved in the construction of the pickup channel without the need for avoiding the support, which facilitates the structural design, reduces the difficulty of avoiding the support, and has the advantages of ensuring the strength of the support.

[0032] In a possible design, the support has a containing groove, the decorative piece and the rear cover are located in the containing groove, and the rear cover is bonded to the groove bottom of the containing groove by an adhesive.

[0033] The containing groove that can be used to accommodate the decorative piece and the rear cover makes the structure compact after the three components of the decorative piece, the rear cover and the support are assembled together.

[0034] In a possible design, the electronic device further includes a breathable barrier installed between the support and the elastic seal and covering the communication between the second through hole and the third through hole.

[0035] The breathable barrier covers the communication between the second through hole and the third through hole, so that the pickup channel can be protected by the breathable barrier to prevent foreign matter from entering, and at the same time, it can also ensure that external sound waves can enter the pickup channel and be received by the microphone.

[0036] In a possible design, the side of the support facing the breathable barrier has a positioning structure, and the breathable barrier is bonded to the positioning structure by an adhesive.

[0037] The positioning structure can determine the installation position of the breathable barrier, so that the assembly process is more convenient. In addition, the adhesive bonding can achieve better sealing at the connection between the third through hole and the breathable barrier on the basis of the mechanical connection between the breathable barrier and the support.

[0038] In a possible design, the decorative piece includes an identification decorative piece or a camera decorative piece.

[0039] In a possible design, the support includes a camera support or a mainboard support.

[0040] In a possible design, the hole axes of the first through hole, the third through hole and the second through hole are parallel or collinear.

[0041] In a possible design, the corner of the second groove is a round chamfer.

[0042] The corner of the second groove is a round chamfer, which is conducive to sound conduction and Helmholtz resonance in the second groove.

[0043] In a possible design, the hole axes of the first through hole and the second through hole are parallel or collinear. BRIEF DESCRIPTION OF DRAWINGS

[0044] FIG. 1 is a schematic diagram of the back of a smartphone in the related art;

[0045] FIG. 2 is a sectional view of A-A in FIG. 1;

[0046] FIG. 3 is a schematic diagram of an example of a smartphone provided in an embodiment of the present application;

[0047] FIG. 4 is a schematic diagram of another example of a smartphone provided in an embodiment of the present application;

[0048] FIG. 5 is a sectional view of B-B in FIG. 3;

[0049] FIG. 6 is a partial schematic diagram of a decoration provided in an embodiment of the present application;

[0050] FIG. 7 is a bottom plan view of the decoration provided in an embodiment of the present application;

[0051] FIG. 8 is a schematic diagram of the entire back cover provided in an embodiment of the present application;

[0052] FIG. 9 is a partial schematic diagram of the back cover provided in an embodiment of the present application;

[0053] FIG. 10 is an exploded view of the decoration, the back cover, the air-permeable barrier, and the elastic seal provided in an embodiment of the present application;

[0054] FIG. 11 is an assembly diagram of the decoration, the back cover, the air-permeable barrier, and the elastic seal provided in an embodiment of the present application;

[0055] FIG. 12 is a sectional view of C-C in FIG. 11;

[0056] FIG. 13 is a partial schematic diagram of a support provided in an embodiment of the present application;

[0057] FIG. 14 is an exploded view of the decoration, the back cover, the support, the air-permeable barrier, and the elastic seal provided in an embodiment of the present application;

[0058] FIG. 15 is an assembly diagram of the decoration, the back cover, the support, the air-permeable barrier, and the elastic seal provided in an embodiment of the present application;

[0059] FIG. 16 is a sectional view of D-D in FIG. 15.

[0060] REFERENCE SIGNS

[0061] 01, camera decoration; 02, plastic support; 03, foam;

[0062] 10, housing; 11, accommodating space; 12, back cover; 121, first through hole; 122, recessed plane; 13, middle frame;

[0063] 20, decorative piece; 21, sound pickup hole; 22, first groove; 23, second groove; 24, strip-shaped protrusion;

[0064] 30, elastic sealing piece; 31, second through hole;

[0065] 40, support; 41, third through hole; 42, accommodating groove; 43, positioning structure;

[0066] 50, air permeable barrier piece; 60, adhesive; 70, microphone; 71, main board; 80, sound pickup channel; 90, stop structure; 100, display screen. DETAILED DESCRIPTION

[0067] The following exemplary describes the related content that the embodiments of the present application can involve. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0068] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected or can communicate with each other; can be directly connected, or indirectly connected through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0069] In the description of the present application, it should be understood that the terms "upper", "lower", "side", "inner", "outer", "top", "bottom" and the like indicate the orientation or positional relationship based on the installation, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0070] It should also be noted that the same reference signs in the embodiments of the present application represent the same component or the same part, and for the same parts in the embodiments of the present application, only one part or component may, for example, be labeled with a reference sign in the drawing, and it should be understood that the reference sign is also applicable to other identical parts or components.

[0071] In the description of the present application, it should be noted that the term "and / or" merely describes an association relationship of associated objects, and indicates that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone.

[0072] Active noise reduction technology is widely used in electronic devices such as earphones and smartphones. It is a technology that uses the phenomenon of phase inversion and mutual cancellation of sound waves to achieve noise reduction effect. The working process of active noise reduction can be roughly divided into four steps: microphone collecting environmental noise, analyzing noise sound waves, electronic device generating reverse sound waves, and outputting final audio information.

[0073] Currently, the microphone used to collect environmental noise on a smartphone is mainly arranged in two positions: one on the back of the phone and the other on the side of the phone. When the microphone is arranged on the back of the phone, in order to ensure the appearance consistency of the back cover (also known as the battery cover), the pickup hole of the microphone is usually not opened on the back cover, but on the camera decoration piece. In addition, a sealed pickup channel needs to be built between the pickup hole and the microphone to ensure the sound receiving quality of the microphone.

[0074] Figure 1 is a schematic diagram of the back of a smartphone in the related art. Figure 2 is a cross-sectional view of A-A in Figure 1.

[0075] As shown in Figures 1-2, in the related art, the camera decoration piece 01 is mounted on the outside of the back cover 12, and the pickup hole 21 is opened on the camera decoration piece 01. A plastic bracket 02 needs to be additionally mounted on the inside of the back cover 12, and a foam 03 is mounted between the plastic bracket 02 and the microphone 70. The pickup channel 80 is formed by the holes on the plastic bracket 02 and the foam 03.

[0076] When assembling various components to form the sound channel structure, the camera decoration piece 01, the back cover 12, the plastic bracket 02, and the foam 03 need to be installed in sequence, which makes it difficult to form the sound channel structure in the related art. Because during the processing of the components, not only the processing tolerances of the four components need to be overcome, but also the assembly tolerances of the four components need to be overcome during assembly. The precision requirements of both the component processing process and the assembly process are high. In addition, the large number of components also leads to high manufacturing cost of the whole machine.

[0077] Therefore, in order to solve the above technical problems, the present application provides an electronic device, which can form a sound channel structure by sequentially installing only three components: a decoration piece, a back cover, and an elastic sealing piece. Compared with the related art, the number of components to be processed or assembled is optimized and reduced, thereby reducing the difficulty and cost of forming the sound channel structure.

[0078] The electronic device can also be referred to as a mobile device, a terminal device, a mobile terminal, or a terminal. The electronic device includes, but is not limited to, a handheld device, a vehicle-mounted device, a wearable device, a computing device, or other processing devices connected to a wireless modem. For example, the electronic device can include a smartphone, a headset, a smartwatch, a smartband, a tablet computer, a notebook computer, a personal digital assistant computer, a vehicle-mounted computer, a game console, and other electronic devices with active noise reduction function and requiring sound channel design optimization.

[0079] To more conveniently describe the electronic device provided by the embodiments of the present application, as an example but not limitation, the technical solutions of the present application will be described in detail below with the electronic device being a smartphone as an example.

[0080] FIG. 3 is a schematic diagram of an example of a smartphone provided by the embodiments of the present application. In FIG. 3, (a) is a schematic diagram of the back of the smartphone provided by the embodiments of the present application; and (b) is a schematic diagram of the front of the smartphone provided by the embodiments of the present application.

[0081] As shown in FIG. 3, the smartphone provided by the embodiments of the present application includes a display screen 100 and a housing 10. The housing 10 further includes a middle frame 13 and a back cover 12. The middle frame 13 has a hollow ring structure, and the front end surface of the middle frame 13 is fixedly provided with the display screen 100, and the rear end surface of the middle frame 13 is fixedly provided with the back cover 12. The display screen 100, the middle frame 13, and the back cover 12 jointly define a containing space 11 of the smartphone, which is used to install various functional elements of the smartphone, such as the microphone 70, the mainboard 71, and other functional elements in the embodiments described below.

[0082] It should be noted that when the electronic device is a headset or other device without a display screen 100, the containing space 11 can also be directly formed by the housing 10.

[0083] In addition, the smartphone can further include functional elements such as a processor, a universal serial bus (USB) interface, a charging management module, a power management module, a battery, a mobile communication module, an antenna, a wireless communication module, an audio module, a headset interface, a sensor module, a key, a camera, and a subscriber identification module (SIM) card interface.

[0084] These functional elements can be changed according to user needs. It can be understood that the specific embodiments introduced above are only one specific implementation of the present application, and other ways that can implement the solutions of the present application are also within the scope of protection of the present application, which will not be described here.

[0085] Optionally, the rear cover 12 can be covered on the middle frame 13 by screwing, clamping, bonding or the like. A sealing ring can be arranged between the rear cover 12 and the middle frame 13 to improve the sealing and waterproof effect of the joint between the rear cover 12 and the middle frame 13. The sealing ring can be made of high-elasticity materials such as silica gel or rubber.

[0086] Since the current electronic devices such as smart phones have a camera function, on the basis of the high requirements of users on the camera function, the number of cameras and the number of lenses of a single camera on the smart phone are increasing, thereby making the size of the entire camera module, especially the size in the thickness direction, larger. In order to make the overall smart phone thinner, most cameras will protrude from the surface of the rear cover 12 of the smart phone. In order not to affect the appearance of the smart phone and to protect the camera, a hollow shell-shaped camera decoration piece 20 made of metal or plastic material is additionally arranged outside the camera, for example, as shown in (a) of FIG. 2.

[0087] Optionally, the overall shape of the camera decoration piece 20 can be a disc, an oval disc, a cuboid, a triangular prism, a multi-prism or the like. For example, as shown in (a) of FIG. 2, the shape of the camera decoration piece 20 is a cuboid structure.

[0088] At present, the high zoom of the camera lens of the smart phone on the market is basically "jumping" zoom, that is, two or more lenses with different focal lengths are mounted, and a digital zoom based on algorithm is used to realize hybrid optical zoom. Therefore, a plurality of lens holes for allowing the camera lens to receive incident light are also arranged on the camera decoration piece 20.

[0089] Optionally, the camera decoration piece 20 can be provided with a protective cover, and the protective cover is sealingly connected with the camera decoration piece 20 to cover the plurality of lens holes, thereby forming a protective effect on the camera lens.

[0090] Specifically, at least a portion of the protective cover opposite to the lens hole is made of transparent material; or the entire protective cover is made of transparent material.

[0091] Optionally, the camera decoration piece 20 further comprises a lens module (not shown in the figure), and the lens module is composed of a lens group, an electronic photosensitive element, a fixing device, an automatic focusing driving assembly, a circuit board, a connector and the like. The lens group is used to image light to the electronic photosensitive element. The fixing device can fix the lens, and the automatic focusing driving assembly can include a voice coil motor, a driving integrated circuit and the like, which is used for automatic focusing or optical anti-shake of the lens.

[0092] Figure 4 is a schematic diagram of another example of a smartphone provided in an embodiment of the present application. As shown in Figure 4, the smartphone provided in an embodiment of the present application can also be provided with a logo decoration 20 on the back cover 12, which can display the logo of the smartphone brand.

[0093] Optionally, the overall shape of the logo decoration 20 can be a hemisphere, a disc, an oval disc, a cuboid, a triangular prism, a polygonal prism, or the like, and the logo can be processed and manufactured on the decoration 20 by means of pasting, silk printing, carving, or the like. Alternatively, the overall shape of the decoration 20 can also be an alphabet, a pattern, or other special-shaped structure, the outline of which constitutes the pattern of the logo. For example, as shown in Figure 3, the overall shape of the logo decoration 20 is an alphabet "h", which plays a role in displaying the logo of the smartphone brand.

[0094] Optionally, when the overall shape of the logo decoration 20 is an alphabet, a pattern, or other special-shaped structure, the edge of the logo decoration 20 can be chamfered to avoid scratching the user or other objects.

[0095] Whether it is the camera decoration 20 or the logo decoration 20, it can be used to form or build the sound channel structure in an embodiment of the present application. The sound channel structure of the electronic device provided in an embodiment of the present application will be described in detail below with reference to the accompanying drawings.

[0096] Figure 5 is a sectional view of B-B in Figure 3.

[0097] As shown in Figure 5, an electronic device provided in an embodiment of the present application includes a housing 10, a decoration 20, and an elastic seal 30.

[0098] The housing 10 has a receiving space 11 for accommodating a microphone 70, and the housing 10 includes a back cover 12 provided with a first through hole 121.

[0099] The microphone 70 can be installed and fixed by a mainboard 71, and the mainboard 71 can be fixed in the receiving space 11 by a mainboard support.

[0100] The decoration 20 is installed on the outer side of the back cover 12, and the decoration 20 is provided with a pickup hole 21 that is in communication with the first through hole 121.

[0101] The elastic seal 30 is located in the receiving space 11 and is installed between the back cover 12 and the microphone 70, and the elastic seal 30 is provided with a second through hole 31 that is in communication with the first through hole 121 and the microphone 70.

[0102] Optionally, the elastic seal 30 includes, but is not limited to, a material with elasticity such as foam, rubber, elastomer, resin, fiber, and composite material, which can be used to build the second through hole 31, and the elastic deformation capability thereof can facilitate the installation of the elastic seal 30 between the back cover 12 and the microphone 70.

[0103] In assembly, the elastic sealing member 30 can be directly pressed between the back cover 12 and the main plate 71, or the elastic sealing member 30 can be bonded between the back cover 12 and the main plate 71 through the adhesive 60, or the elastic sealing member 30 can be directly pressed between the back cover 12 and the main plate support, or the elastic sealing member 30 can be bonded between the back cover 12 and the main plate support through the adhesive 60.

[0104] The first through hole 121 and the second through hole 31 form a sound pickup channel 80, and external sound waves enter the sound pickup channel 80 through the sound pickup hole 21 and are conducted to the microphone 70.

[0105] Optionally, the microphone 70 can be used to receive external noise, and can also be used to receive the user's voice, that is, the sound channel structure in the embodiment of the application can not only be used on the microphone 70 in the active noise reduction function, but also can be used on the microphone 70 in the voice call function.

[0106] The electronic device provided in the embodiment of the application mainly comprises a sound pickup hole 21 and a sound pickup channel 80, wherein the sound pickup hole 21 is arranged on the decoration piece 20, the sound pickup channel 80 is formed by the first through hole 121 arranged on the back cover 12 and the second through hole 31 arranged on the elastic sealing member 30, external sound waves enter the sound pickup channel 80 through the sound pickup hole 21 and are conducted to the microphone 70 to realize the reception of external sound waves by the microphone 70. When assembling the components to form the sound channel structure, only the decoration piece 20, the back cover 12 and the elastic sealing member 30 need to be installed in sequence, compared with the related art, both the number of processed components and the number of assembled components are optimized and reduced, thereby the control requirement for the process in the processing and assembly procedures of the components is lower, so that the difficulty of forming the sound channel structure in the embodiment of the application is smaller, and in addition, when the sound channel structure in the embodiment of the application is applied to a smart phone, the manufacturing cost of the whole machine is also reduced due to the reduction of the components.

[0107] In addition, returning to Fig. 1, in the related art, since the sound pickup channel 80 is formed by the hole on the plastic support 02 and the foam 03, the position of the sound pickup channel 80 is limited by the plastic support 02, which leads to the limitation of the position of the microphone 70 and the microphone 70 cannot be arranged directly below the back cover 12. As shown in Fig. 5, in the embodiment of the application, since the sound pickup channel 80 is formed by the back cover 12 and the elastic sealing member 30, the microphone 70 can be arranged directly below the back cover 12, so that the arrangement position of the microphone 70 is more flexible, and the accommodation space 11 can be fully utilized to optimize the structural design.

[0108] Optionally, the hole opening of the sound pickup hole 21 towards the outside is located on the top surface or the side surface of the decoration piece 20.

[0109] In an embodiment provided by the present application, the hole axes of the first through hole 121 and the second through hole 31 are parallel. That is, the first through hole 121 and the second through hole 31 can not be concentrically arranged.

[0110] In an embodiment provided by the present application, the hole axes of the first through hole 121 and the second through hole 31 are collinear. That is, the first through hole 121 and the second through hole 31 can be concentrically arranged.

[0111] As shown in FIG. 5, in an embodiment provided by the present application, the hole opening of the sound pickup hole 21 towards the outside is located on the side of the decorative piece 20.

[0112] In the embodiment, the hole opening of the sound pickup hole 21 towards the outside is arranged on the side of the decorative piece 20, so that when a user holds the smart phone, the fingers are less likely to block the sound pickup hole 21, thereby ensuring that the microphone 70 can effectively receive the sound waves from the outside and guarantee the effectiveness of the active noise reduction function.

[0113] If the hole opening of the sound pickup hole 21 towards the outside is not limited, for example, the hole opening of the sound pickup hole 21 towards the outside is located on the top of the decorative piece 20, so that when a user holds the smart phone, especially when making a call, the fingers will unconsciously block the sound pickup hole 21, thereby causing obstacles in the collection of sound waves from the outside by the microphone 70 and making the active noise reduction function ineffective.

[0114] As shown in FIG. 5, in an embodiment provided by the present application, the side of the decorative piece 20 towards the back cover 12 is provided with a first groove 22, one end of the first groove 22 is connected to the outside and the other end is connected to the first through hole 121, and the groove wall of the first groove 22 and the surface of the back cover 12 enclose the sound pickup hole 21.

[0115] In the embodiment, the side of the decorative piece 20 towards the back cover 12 is provided with the first groove 22, and the sound pickup hole 21 is formed by the first groove 22 and the back cover 12, so that the hole opening of the sound pickup hole 21 towards the outside is located on the side of the decorative piece 20. Furthermore, the hole opening of the sound pickup hole 21 towards the outside is located at the root of the decorative piece 20, so that the user is less likely to block the sound pickup hole 21. Specifically, when the user holds the smart phone, even if the fingers move to the hole opening of the sound pickup hole 21, the fingers will be blocked by the side of the decorative piece 20 and the back cover 12, so that the fingers, the side of the decorative piece 20 and the back cover 12 enclose a space which is roughly triangular in shape, and the hole opening of the sound pickup hole 21 is located in the space and cannot be blocked by the fingers, thereby ensuring the effectiveness of the sound pickup hole 21 and the smooth entry of sound waves from the outside.

[0116] FIG. 6 is a partial schematic view of the decorative piece 20 provided by the embodiment of the present application. In FIG. 6, (a) and (b) are partial schematic views of the decorative piece 20 from different perspectives.

[0117] As shown in FIG. 6, in an embodiment provided by the present application, the side of the decoration piece 20 facing the back cover 12 further has a second groove 23, the first groove 22 and the first through hole 121 are communicated through the second groove 23, so that the second groove 23, the first through hole 121 and the second through hole 31 form a sound pickup channel 80; the groove inner volume of the second groove 23 is greater than the groove inner volume of the first groove 22.

[0118] In the embodiment, the first groove 22 and the first through hole 121 are communicated through the second groove 23, and the groove inner volume of the second groove 23 is greater than the groove inner volume of the first groove 22, so that the second groove 23 can form a space similar to a "Helmholtz resonance cavity" on the sound pickup channel 80. When external sound waves enter the sound pickup channel 80 through the sound pickup hole 21 (or the first groove 22), Helmholtz resonance will occur in the second groove 23 to amplify external noise, so that the noise characteristics are more obvious, so that the microphone 70 can more easily receive the noise, thereby improving the sensitivity of the microphone 70 when collecting noise, and providing more accurate noise information for the active noise reduction module.

[0119] In addition, when the sound channel structure is used on the microphone 70 in the voice call function, the second groove 23 can be used to amplify the user's voice, so that the user's voice collected by the microphone 70 is clearer.

[0120] As shown in FIG. 6, in an embodiment provided by the present application, the corner of the second groove 23 is a round chamfer.

[0121] In the embodiment, the corner of the second groove 23 is a round chamfer, which is beneficial to sound wave conduction and Helmholtz resonance in the second groove 23.

[0122] FIG. 7 is a bottom plan view of the decoration piece 20 provided by an embodiment of the present application.

[0123] As shown in FIG. 7, in an embodiment provided by the present application, the cross-sectional area of the second groove 23 gradually decreases from the first groove 22 to the second groove 23. The direction from the first groove 22 to the second groove 23 refers to the a direction in FIG. 7, and the cross section of the second groove 23 refers to the groove cross section after being cut along the E-E cutting line in FIG. 7.

[0124] In the embodiment, the second groove 23 is gradually gathered along the a direction, so that the external sound waves entering the second groove 23 can be converged and guided to the first through hole 121, so that the sound wave flow has directivity, and then can be fully received by the microphone 70, further improving the sensitivity of the microphone 70 when collecting noise.

[0125] FIG. 8 is a whole schematic view of the back cover 12 provided by an embodiment of the present application.

[0126] As shown in FIG. 8, the rear cover 12 is shown from a bottom perspective view, and a portion of the rear cover 12 is hollowed out, which can be used to avoid some components of the smart phone, such as the camera module, the speaker module, the motor module, etc. Taking the lens of the camera module as an example, a camera decoration piece 20 (not shown in the figure) is mounted on the outer side of the rear cover 12, and the camera decoration piece 20 will completely cover the hollowed-out part, and the lens of the camera module will extend into the inner cavity of the camera decoration piece 20 through the hollowed-out part.

[0127] As shown in FIG. 8, a first through hole 121 is provided on the rear cover 12 near the hollowed-out part to form a sound pickup channel 80.

[0128] FIG. 9 is a partial schematic view of the rear cover 12 according to an embodiment of the present application. In FIG. 9, (a) and (b) are partial schematic views of the rear cover 12 from different perspectives.

[0129] As shown in FIG. 9, and in combination with FIG. 8, the rear cover 12 in FIG. 9 only shows a portion of the base body with the first through hole 121. The side of the rear cover 12 facing the decoration piece 20 has a recessed plane 122, and as shown in FIG. 6, the side of the decoration piece 20 facing the rear cover 12 has a strip-shaped protrusion 24. The recessed plane 122 and the strip-shaped protrusion 24 form a stop structure 90.

[0130] FIG. 12 shows a cross-sectional view of the stop structure 90 formed by the recessed plane 122 and the strip-shaped protrusion 24. The strip-shaped protrusion 24 and the recessed plane 122 cooperate with each other to facilitate positioning of the decoration piece 20 and the rear cover 12 during assembly, and also have the functions of preventing glue overflow and preventing static electricity. The specific functions of the stop structure 90 are described as follows.

[0131] First, the stop structure 90 has a limiting function to prevent or reduce the positional deviation or step difference of the two cooperating components, i.e., the decoration piece 20 and the rear cover 12, during assembly. The strip-shaped protrusion 24 and the recessed plane 122 limit or position the decoration piece 20 and the rear cover 12 in the horizontal direction, which is beneficial for assembly.

[0132] Second, the stop structure 90 can prevent glue overflow. For example, when the strip-shaped protrusion 24 and the recessed plane 122 are bonded by the adhesive 60, the portion of the rear cover 12 except the recessed plane 122 is actually convex, which can limit the flow of the adhesive 60 on the recessed plane 122 and prevent glue overflow.

[0133] Thirdly, it plays a role of electro-static discharge (ESD). If the released static electricity is regarded as flood, the main solution is similar to water control, which can be finally attributed to the three solutions of "blocking", "dredging" and "isolating". The method of "blocking" is embodied in the embodiments of the present application, and the role of the strip-shaped protrusion 24 is to act as a static wall to isolate static electricity into the second groove 23, so that static electricity is difficult to enter the accommodation space 11 from the second groove 23, and even if part of the static electricity with large intensity penetrates into the accommodation space 11, the energy of the static electricity is greatly weakened due to the role of the strip-shaped protrusion 24.

[0134] The case shown in FIGS. 6 and 9 is an embodiment in which the strip-shaped protrusion 24 is arranged on the decorative piece 20 and the recessed plane 122 is arranged on the back cover 12. Of course, in another embodiment provided by the present application, the strip-shaped protrusion 24 and the recessed plane 122 can also be arranged on the base in a manner of interchanging, that is, the strip-shaped protrusion 24 is arranged on the back cover 12 and the recessed plane 122 is arranged on the decorative piece 20.

[0135] The above describes the spigot structure 90 composed of the recessed plane 122 and the strip-shaped protrusion 24, and in other embodiments, the spigot structure 90 can also be a single spigot, a double spigot, a reverse spigot, etc.

[0136] Specifically, the single spigot can be composed of a male spigot and a female spigot.

[0137] Specifically, the double spigot can be a combination of a single male spigot and a double female spigot, or a combination of a double male spigot and a double female spigot.

[0138] Specifically, the reverse spigot can be a single reverse spigot or a double reverse spigot.

[0139] In an embodiment provided by the present application, the strip-shaped protrusion 24 and the recessed plane 122 are bonded by the adhesive 60, so that the decorative piece 20 and the back cover 12 can be mechanically connected and better sealing can be achieved at the connection between the two.

[0140] Optionally, the adhesive 60 includes but is not limited to optical transparent adhesive, double-sided adhesive, hot melt adhesive, photosensitive adhesive, pressure sensitive adhesive, etc.

[0141] Optionally, the material of the back cover 12 can be a prepreg, which is a combination of a resin matrix and a reinforcing body prepared by impregnating continuous fibers or fabrics with a resin matrix under strictly controlled conditions. When the recessed plane 122 is formed on the back cover 12, since the back cover 12 is stacked by multiple layers of fibers or fabrics, the recessed plane 122 can be formed by locally stacking or not stacking fibers or fabrics.

[0142] Optionally, the material of the rear cover 12 can also be glass, carbon fiber, resin, alloy, etc. When the recessed plane 122 is formed on the rear cover 12, the recessed plane 122 with a thickness thinner than other parts can be processed on the rear cover 12 by grinding, cutting, drilling, turning, milling, etc.

[0143] FIG. 10 is an exploded view of the decorative piece 20, the rear cover 12, the air-permeable barrier 50, and the elastic sealing piece 30 according to an embodiment of the present application. FIG. 11 is an assembly view of the decorative piece 20, the rear cover 12, the air-permeable barrier 50, and the elastic sealing piece 30 according to an embodiment of the present application. FIG. 12 is a sectional view of C-C in FIG. 11.

[0144] As shown in FIGS. 10-12, in one embodiment provided by the present application, the electronic device further comprises an air-permeable barrier 50 installed between the rear cover 12 and the elastic sealing piece 30, and covering the communication between the first through hole 121 and the second through hole 31.

[0145] In this embodiment, the air-permeable barrier 50 covers the communication between the first through hole 121 and the second through hole 31, so that the pickup channel 80 can be protected by the air-permeable barrier 50 to prevent foreign matter from entering, while ensuring that external sound waves can enter the pickup channel 80 and be received by the microphone 70.

[0146] In addition, it should be noted that due to the presence of the air-permeable barrier 50, the sound energy of the external sound waves will inevitably decrease after entering the pickup channel 80 and passing through the air-permeable barrier 50, so that the audio information of the external noise finally entering the microphone 70 is inaccurate, and thus the noise reduction audio emitted by the active noise reduction module is inaccurate, thereby weakening the active noise reduction function. Therefore, the present embodiment can be used in combination with the above-mentioned “Helmholtz resonator”, that is, a second groove 23 with a slightly larger volume is designed on the pickup channel 80 to amplify the amplitude of the external noise, so that the noise characteristics are more obvious, so as to offset the sound energy loss caused by the air-permeable barrier 50.

[0147] Optionally, the air-permeable barrier 50 can be a mesh cloth, a sponge sheet, etc.

[0148] As shown in FIG. 12, in one embodiment provided by the present application, the area of the groove opening of the second groove 23 and the area of the hole opening of the second through hole 31 are both greater than the area of the hole opening of the first through hole 121.

[0149] In this embodiment, the slot area of the second slot 23 and the hole area of the second through hole 31 are both greater than the hole area of the first through hole 121, so that the decorative piece 20 and the rear cover 12 and the elastic sealing piece 30 can be conveniently and sealingly installed. When the position of the first through hole 121 relative to the second slot 23 and the second through hole 31 is adjusted, the first through hole 121 is not easily blocked by the decorative piece 20 and the elastic sealing piece 30. In addition, the slot area of the second slot 23 and the hole area of the second through hole 31 are both greater than the hole area of the first through hole 121, so that the first through hole 121 has a certain range of deviation allowance on the rear cover 12. The position of the first through hole 121 on the rear cover 12 does not need to be excessively accurately limited, thereby reducing the processing difficulty of the rear cover 12.

[0150] In some other embodiments provided in the present application, only the slot area of the second slot 23 can be designed to be greater than the hole area of the first through hole 121, so as to reduce the assembly difficulty of the decorative piece 20 and the rear cover 12; or only the hole area of the second through hole 31 can be designed to be greater than the hole area of the first through hole 121, so as to reduce the assembly difficulty of the elastic sealing piece 30 and the rear cover 12.

[0151] FIG. 13 is a partial schematic view of the bracket 40 provided in the embodiments of the present application. In FIG. 13, (a) and (b) are partial schematic views of the bracket 40 from different perspectives.

[0152] FIG. 14 is an exploded view of the decorative piece 20, the rear cover 12, the bracket 40, the air-permeable barrier 50, and the elastic sealing piece 30 provided in the embodiments of the present application. FIG. 15 is an assembly view of the decorative piece 20, the rear cover 12, the bracket 40, the air-permeable barrier 50, and the elastic sealing piece 30 provided in the embodiments of the present application. FIG. 16 is a sectional view of D-D in FIG. 15.

[0153] As shown in FIGS. 14-16, in one embodiment provided in the present application, the electronic device further includes a bracket 40 installed between the rear cover 12 and the elastic sealing piece 30. The bracket 40 is provided with a third through hole 41 that communicates the first through hole 121 with the second through hole 31, so that the second slot 23, the first through hole 121, the third through hole 41, and the second through hole 31 form a pickup channel 80.

[0154] In the foregoing several embodiments, the pickup channel 80 is constructed by the rear cover 12, the elastic sealing member 30 and other components. When the pickup channel 80 is occupied by other components and cannot be conveniently avoided, other components can also participate in the construction of the pickup channel 80. For example, in the present embodiment, when the decorative member 20 is a camera decorative member, the pickup channel 80 is adjacent to the camera and interferes with the camera support. When the camera support cannot be avoided, a third through hole 41 can be formed in the camera support to participate in the construction of the pickup channel 80. Alternatively, when the decorative member 20 is an identification decorative member, the pickup channel 80 is adjacent to the mainboard 71 and interferes with the mainboard support. When the mainboard support cannot be avoided, a third through hole 41 can be formed in the mainboard support to participate in the construction of the pickup channel 80. Therefore, if the support 40 interferes with the pickup channel 80 in the present embodiment, the support 40 does not need to be avoided but directly participates in the construction of the pickup channel 80, which is beneficial to the structural design and can reduce the difficulty of avoiding the design of the support 40.

[0155] In addition to the above-mentioned advantages of facilitating structural design, the present embodiment also has the advantage of ensuring the strength reliability of the support 40. For example, as shown in FIG. 16, if the support 40 does not form a third through hole 41 but avoids the pickup channel 80, a reasonable design should be to form an avoidance slot to avoid the position of the formed base body (the elastic sealing member 30) of the pickup channel 80. However, this will cause two problems: first, forming the avoidance slot actually means cutting a part of the base material of the support 40, which will affect the overall structural strength of the support 40; second, the adhesion part of the support 40 and the rear cover 12 is cut off, which affects the connection strength of the support 40 and the rear cover 12. Both of these two problems will cause the strength reliability of the support 40 on the smart phone to decrease, the bearing capacity of the camera or the mainboard 71 to decrease, and further cause the functional reliability of the smart phone to decrease.

[0156] Further, in an embodiment provided by the present application, a breathable barrier 50 is installed between the support 40 and the elastic sealing member 30, which covers the communication part of the second through hole 31 and the third through hole 41.

[0157] In the embodiment, the air permeable barrier 50 covers the communication between the second through hole 31 and the third through hole 41, so that the pickup channel 80 can be protected by the air permeable barrier 50 to prevent foreign matters from entering, and meanwhile, the sound waves from the outside can enter the pickup channel 80 and be received by the microphone 70. In addition, the air permeable barrier 50 in the embodiment also causes the sound energy of the sound waves from the outside to be reduced, so that the information of the sound waves from the outside entering the microphone 70 is inaccurate, and thus the noise reduction audio emitted by the active noise reduction module is inaccurate, thereby weakening the active noise reduction function. Therefore, the embodiment can be used in combination with the above-mentioned "Helmholtz resonator", that is, a second groove 23 with a slightly larger volume is designed on the pickup channel 80 to amplify the noise from the outside, so that the noise characteristics are more obvious to offset the sound energy loss caused by the air permeable barrier 50.

[0158] In an embodiment provided by the present application, the support 40 is a camera support.

[0159] In another embodiment provided by the present application, the support 40 is a mainboard support.

[0160] As shown in FIG. 13, in an embodiment provided by the present application, the support 40 has a containing groove 42, the decorative piece 20 and the back cover 12 are located in the containing groove 42, and the back cover 12 is adhered to the groove bottom of the containing groove 42 by the adhesive 60.

[0161] In the embodiment, the structure of the support 40 is further limited to have the containing groove 42 for accommodating the decorative piece 20 and the back cover 12, so that the three components of the decorative piece 20, the back cover 12 and the support 40 are compactly assembled.

[0162] The adhesive 60 is used for adhesion, so that the back cover 12 and the support 40 are mechanically connected, and meanwhile, better sealing is achieved at the communication between the third through hole 41 and the first through hole 121.

[0163] As shown in FIG. 14, in an embodiment provided by the present application, the side of the support 40 facing the air permeable barrier 50 has a positioning structure 43, and the air permeable barrier 50 is adhered to the positioning structure 43 by the adhesive 60.

[0164] In the embodiment, the positioning structure 43 can determine the installation position of the air permeable barrier 50, so that the assembly process is more convenient. In addition, the adhesive 60 is used for adhesion, so that the air permeable barrier 50 and the support 40 are mechanically connected, and meanwhile, better sealing is achieved at the connection between the third through hole 41 and the air permeable barrier 50.

[0165] Optionally, the positioning structure 43 can be a groove or a boss.

[0166] In an embodiment provided by the application, the hole axes of the first through hole 121, the third through hole 41 and the second through hole 31 are parallel. That is, the first through hole 121, the third through hole 41 and the second through hole 31 can not be concentrically arranged.

[0167] In an embodiment provided by the application, the hole axes of the first through hole 121, the third through hole 41 and the second through hole 31 are collinear. That is, the first through hole 121, the third through hole 41 and the second through hole 31 can be concentrically arranged.

[0168] Finally, it should be noted that the above description is merely a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any changes or replacements within the technical scope disclosed by the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An electronic device, comprising: The application relates to a microphone shell, comprising: a shell (10) having a receiving space (11) for accommodating a microphone (70), the shell (10) comprising a back cover (12) provided with a first through hole (121); a decorative piece (20) mounted on the outer side of the back cover (12), the decorative piece (20) being provided with a sound pickup hole (21) communicating with the first through hole (121); an elastic sealing piece (30) located in the receiving space (11) and mounted between the back cover (12) and the microphone (70), the elastic sealing piece (30) being provided with a second through hole (31) communicating the first through hole (121) with the microphone (70); the first through hole (121) and the second through hole (31) form a sound pickup channel (80).

2. The electronic device of claim 1, wherein, The side of the decorative piece (20) facing the back cover (12) is provided with a first groove (22), one end of the first groove (22) being connected with the outside world and the other end being connected with the first through hole (121), and the groove wall of the first groove (22) and the surface of the back cover (12) form the sound pickup hole (21).

3. The electronic device of claim 2, wherein, The side of the decorative piece (20) facing the back cover (12) is also provided with a second groove (23), the first groove (22) and the first through hole (121) being connected through the second groove (23) so that the second groove (23), the first through hole (121) and the second through hole (31) form the sound pickup channel (80); the inner volume of the second groove (23) is larger than that of the first groove (22).

4. The electronic device of claim 3, wherein, The cross-sectional area of the second groove (23) gradually decreases from the first groove (22) to the second groove (23).

5. The electronic device of claim 3, wherein, The opening area of the second groove (23) is larger than the hole opening area of the first through hole (121); and / or, the hole opening area of the second through hole (31) is larger than the hole opening area of the first through hole (121).

6. The electronic device of any of claims 1-5, wherein, The joint between the decorative piece (20) and the back cover (12) is provided with a stop structure (90).

7. The electronic device of claim 6, wherein, The stop structure (90) comprises a strip-shaped protrusion (24) and a concave plane (122) conforming to the strip-shaped protrusion (24), the strip-shaped protrusion (24) being arranged on one of the decorative piece (20) and the back cover (12), and the concave plane (122) being arranged on the other one of the decorative piece (20) and the back cover (12).

8. The electronic device of claim 7, wherein, The strip-shaped protrusion (24) and the concave plane (122) are bonded by an adhesive (60).

9. The electronic device of any of claims 1-8, wherein, The application further relates to a microphone shell, comprising: a breathable barrier piece (50) mounted between the back cover (12) and the elastic sealing piece (30) and covering the communication part of the first through hole (121) and the second through hole (31).

10. The electronic device of any of claims 3-5, wherein, The application further relates to a microphone shell, comprising: A support (40) is installed between the rear cover (12) and the elastic seal (30), and the support (40) is provided with a third through hole (41) for communicating the first through hole (121) with the second through hole (31), so that the second groove (23), the first through hole (121), the third through hole (41) and the second through hole (31) form the pickup channel (80).

11. The electronic device of claim 10, wherein, The support (40) has a containing groove (42), and the decorative piece (20) and the rear cover (12) are located in the containing groove (42), and the rear cover (12) is bonded to the groove bottom of the containing groove (42) by an adhesive (60).

12. The electronic device of claim 10 or 11, wherein, Further comprising: A breathable barrier (50) is installed between the support (40) and the elastic seal (30), and covers the communication part of the second through hole (31) and the third through hole (41).

13. The electronic device of claim 12, wherein, The side of the support (40) facing the breathable barrier (50) has a positioning structure (43), and the breathable barrier (50) is bonded to the positioning structure (43) by an adhesive (60).

14. The electronic device of any of claims 1-13, wherein, The decorative piece (20) comprises an identification decorative piece or a camera decorative piece.

15. The electronic device of any of claims 10-13, wherein, The support (40) comprises a camera support or a mainboard support.

16. The electronic device of any of claims 10-13, wherein, The hole axes of the first through hole (121), the third through hole (41) and the second through hole (31) are parallel or collinear.

17. The electronic device of any of claims 3-5, wherein, The corner of the second groove (23) is a round chamfer.

18. The electronic device of any of claims 1-17, wherein, The hole axes of the first through hole (121) and the second through hole (31) are parallel or collinear.

Images