Microphone assembly and electronic equipment

Abstract

The utility model discloses a microphone assembly and electronic equipment. The microphone assembly comprises a shell, a sealing assembly, a plurality of microphones, a circuit board and a cover body, a mounting groove is formed in the shell wall part of the shell, the sealing assembly is placed in the mounting groove, and a part of the sealing assembly extends out of the mounting groove; the microphone is installed on the circuit board, the circuit board is located between the shell wall part and the cover body, the cover body is fixedly connected with the shell, the cover body abuts against the circuit board so that the circuit board can press the sealing assembly, and the position of the microphone corresponds to the position of the sealing assembly; the sealing assembly comprises a sealing gasket and a dustproof net, the dustproof net is fixedly arranged on the side, back to the circuit board, of the sealing gasket, the installation groove is provided with a first fool-proof structure, and the sealing assembly is provided with a second fool-proof structure matched with the first fool-proof structure. The structural arrangement of the microphone assembly can reduce the assembly difficulty.

Description

Technical Field

[0001] The present application relates to the technical field of electronic products, and in particular to a microphone assembly and an electronic device. Background Art

[0002] When assembling the microphone assembly on the electronic device, it is necessary to ensure the sealing of the sound pickup channel to ensure the sound pickup effect.

[0003] In the related art, the microphone assembly first attaches the dust net to the shell, then attaches the seal to the dust net, and finally presses the PCB (Printed Circuit Board) with the MIC (microphone) onto the seal for sealing. Alternatively, the seal can be first attached to the PCB, then the dust net is attached to the seal, and finally the shell and the seal are pressed together for sealing. Both methods can form a closed sound channel, but the assembly process is complicated. As the number of MICs increases, the number of dust nets and seals increases, and the assembly difficulty will be greater. Utility Model Content

[0004] The purpose of the present application is to provide a microphone assembly and an electronic device, wherein the structural arrangement of the microphone assembly can reduce the difficulty of assembly and help ensure the assembly effect.

[0005] In order to solve the above technical problems, an embodiment of the present application provides a microphone assembly, including a housing, a sealing assembly, a plurality of microphones, a circuit board and a cover;

[0006] The shell wall portion of the housing has a mounting groove, the sealing assembly is placed in the mounting groove, and part of the sealing assembly extends out of the mounting groove; the microphone is mounted on the circuit board, the circuit board is located between the shell wall portion and the cover body, the cover body is fixedly connected to the housing, the cover body presses against the circuit board so that the circuit board presses the sealing assembly, and the position of the microphone corresponds to the position of the sealing assembly;

[0007] The sealing assembly includes a sealing gasket and a dustproof net, the dustproof net is fixed to the side of the sealing gasket facing away from the circuit board, the mounting groove has a first fool-proof structure, and the sealing assembly has a second fool-proof structure that cooperates with the first fool-proof structure.

[0008] In one feasible solution, the sealing assembly includes a circular main body and a convex portion extending outward from the outer peripheral wall of the main body, and the extension direction of the convex portion deviates from the radial direction of the main body; the mounting groove includes a first groove portion cooperating with the main body and a second groove portion cooperating with the convex portion; the first anti-foolproofing structure includes the second groove portion, and the second anti-foolproofing structure includes the convex portion.

[0009] In a feasible solution, the sealing gasket has a groove opening toward the shell wall portion, and the dustproof net is located in the groove.

[0010] In one feasible solution, a positioning structure is provided between the shell and the circuit board, and the positioning structure includes multiple groups of plug-in positioning columns and positioning holes, one of the positioning columns and the positioning holes is provided on the shell, and the other of the positioning columns and the positioning holes is provided on the circuit board.

[0011] In one feasible solution, the microphone is installed on a side of the circuit board facing away from the sealing assembly; among multiple positioning columns, at least one positioning column is an anti-foolproof column, and among multiple positioning holes, at least one positioning hole is an anti-foolproof hole that cooperates with the anti-foolproof column.

[0012] In a feasible solution, the positioning column is provided on the housing, and the positioning hole is provided on the circuit board;

[0013] The cover body has a mounting hole matched with the positioning column, the positioning column has a fastening hole, the cover body and the shell are fixedly connected by a fastener, and the fastener passes through the mounting hole and matches with the fastening hole.

[0014] In a feasible solution, a mounting boss is provided on one side of the cover body facing the shell wall portion, and one side of the mounting boss has a slot that is inserted and matched with the positioning column, and the mounting hole is provided on the bottom wall of the slot.

[0015] In a feasible solution, the housing is provided with a first guide structure, and the circuit board and the cover are both provided with a second guide structure that cooperates with the first guide structure.

[0016] In one feasible solution, the shell includes a shell peripheral wall arranged on the outer periphery of the shell wall portion, the shell wall portion and the shell peripheral wall enclose an installation cavity, the circuit board and the cover body are located in the installation cavity, the shell peripheral wall has a wire groove, and the cover body has a notch to avoid the wire groove.

[0017] An embodiment of the present application further provides an electronic device, including a main board and a microphone assembly, wherein the microphone assembly is any one of the microphone assemblies described above, and the circuit board is communicatively connected with the main board.

[0018] The microphone assembly provided in the embodiment of the present application can be used in electronic devices. The structural setting of the microphone assembly only requires placing the sealing assembly into the mounting groove of the shell, placing the circuit board and the cover body in sequence, fixing the cover body and the shell, and using the fastening force of the cover body and the shell to press the sealing assembly. The difficulty of assembly is reduced, and even if the number of microphones increases, the difficulty of assembly will not increase. During the assembly process, the accuracy of the installation direction of the sealing assembly is ensured by the anti-fool structure to avoid unqualified products after assembly, which is also beneficial to improving assembly efficiency. The position of the sealing assembly is limited by the mounting groove, and no manual alignment is required. The position of the sealing assembly can also be avoided from being offset during the assembly process, which is beneficial to ensuring the assembly effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A front view of a microphone assembly according to an embodiment of the present application;

[0020] Figure 2 for Figure 1 a rear view of the microphone assembly shown;

[0021] Figure 3 for Figure 1 an exploded view of the microphone assembly shown;

[0022] Figure 4 for Figure 1 Schematic diagram of the AA section;

[0023] Figure 5 for Figure 4 A partial enlarged view of the middle J1 area;

[0024] Figure 6 for Figure 3 Rear view of the middle shell;

[0025] Figure 7 for Figure 6 A partial enlarged view of the middle J2 area;

[0026] Figure 8 It is a structural schematic diagram of a sealing assembly in a specific embodiment;

[0027] Fig. 9 for Figure 8 An exploded view of the seal assembly shown;

[0028] Fig.10 for Figure 6 A partial enlarged view of the middle J3 area;

[0029] Fig.11 for Figure 3 The front view of the circuit board in the figure;

[0030] Fig.12 for Figure 3 Schematic diagram of the back of the circuit board;

[0031] Fig.13 for Figure 3 A schematic diagram of the structure of the middle cover body;

[0032] Fig.14 for Fig.13 A front view of the cover body shown;

[0033] Fig.15 for Fig.13 A schematic diagram of the back side of the cover shown.

[0034] Description of reference numerals:

[0035] Microphone assembly 100;

[0036] Shell 10, shell wall 11, mounting groove 111, first groove 1111, second groove 1112, first sound-transmitting hole 112, shell peripheral wall 12, positioning column 13, first positioning column 13A, protrusion 132A, second positioning column 13B, fastening hole 131, guide rib 14, wire groove 15, rib plate 151;

[0037] Sealing assembly 20, sealing pad 21, second sound-transmitting hole 211, groove 212, dust-proof net 22, main body 201, convex part 202;

[0038] Microphone 30, circuit board 40, sound pickup hole 41, positioning hole 42, first positioning hole 42A, second positioning hole 42B, first guide groove 43;

[0039] Cover body 50 , mounting boss 51 , slot 511 , mounting hole 512 , second guide groove 52 , notch 53 , fastener 60 . DETAILED DESCRIPTION

[0040] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0041] The term "several" mentioned herein may refer to one, two or more, and the term "multiple" mentioned herein may refer to two, three or more.

[0042] Please refer to Figures 1 to 5 , Figure 1 This is a front view of a microphone assembly in an embodiment provided in the present application. Figure 2 for Figure 1 Rear view of microphone assembly shown, Figure 3 for Figure 1 An exploded view of the microphone assembly is shown. Figure 4 for Figure 1 AA section diagram, Figure 5 for Figure 4A partial enlarged view of the J1 area in the middle.

[0043] In this embodiment, the microphone assembly 100 includes a housing 10 , a sealing assembly 20 , a plurality of microphones 30 , a circuit board 40 and a cover 50 .

[0044] The housing 10 includes a housing wall portion 11 having a mounting groove 111 . The sealing assembly 20 is placed in the mounting groove 111 , and a portion of the sealing assembly 20 extends out of the mounting groove 111 .

[0045] The microphone 30 is mounted on the circuit board 40, and the circuit board 40 is located between the shell wall 11 and the cover body 50. The cover body 50 is fixedly connected to the shell 10. The cover body 50 presses against the circuit board 40 so that the circuit board 40 presses the sealing assembly 20. The position of the microphone 30 corresponds to the position of the sealing assembly 20.

[0046] The circuit board 40 has a sound pickup hole 41 corresponding to the microphone 30, and the sealing component 20 and the bottom wall of the mounting groove 111 both have sound transmission holes corresponding to the position of the sound pickup hole 41 to form a closed sound channel. For ease of understanding, the sound transmission hole of the bottom wall of the mounting groove 111 is referred to as the first sound transmission hole 112, and the sound transmission hole of the sealing component 20 is referred to as the second sound transmission hole 211.

[0047] The sealing assembly 20 includes a sealing gasket 21 and a dustproof net 22, wherein the dustproof net 22 is fixedly arranged on the side of the sealing gasket 21 facing away from the circuit board 40, that is, the dustproof net 22 faces the side of the shell wall 11, and the installation groove 111 of the shell wall 11 has a first anti-foolproof structure, and the sealing assembly 20 has a second anti-foolproof structure cooperating with the first anti-foolproof structure.

[0048] By adopting the above scheme, when assembling the microphone assembly 100, the sealing gasket 21 and the dustproof net 22 can be first fixed into an integrated structure to form a sealing assembly 20, and the sealing assembly 20 can be placed in the installation groove 111 of the shell wall portion 11 of the shell 10, and then the circuit board 40 equipped with the microphone 30 is placed in the shell 10 and matched with the shell wall portion 11. Finally, the cover body 50 is pressed against the circuit board 40 to fix the cover body 50 to the shell 10. The circuit board 40 is locked by the fastening force of the cover body 50 and the shell 10, and the sealing assembly 20 can be pressed to achieve the sealing of the sound channel.

[0049] After the sealing component 20 is placed in the mounting groove 111, part of it extends out of the mounting groove 111, which ensures that the circuit board 40 can press the sealing component 20 to achieve sealing. In application, if the thickness of the sealing component 20 is greater than the groove depth of the mounting groove 111, part of the sealing component 20 can be extended out of the mounting groove 111.

[0050] The dustproof net 22 is arranged on the side of the sealing gasket 21 facing the shell wall 11, which can effectively prevent dust or impurities outside the shell 10 from entering the sound channel through the first sound-transmitting hole 112 of the shell wall 11 and affecting the sound pickup effect.

[0051] The first foolproof structure provided in the installation groove 111 and the second foolproof structure provided in the sealing assembly 20 cooperate with each other to prevent the sealing assembly 20 from being installed in the installation groove 111 in the wrong direction. In other words, the provision of the first foolproof structure and the second foolproof structure ensures that the sealing assembly 20 can only be placed in the installation groove 111 with the dustproof net 22 facing the shell wall 11. If the dustproof net 22 faces away from the shell wall 11, the sealing assembly 20 cannot be placed in the installation groove 111.

[0052] The structure of the microphone assembly is set up so that the sealing assembly 20 only needs to be placed in the installation groove 111, and then the circuit board 40 and the cover body 50 are placed in sequence, and then the cover body 50 and the shell 10 are fixed, and the sealing assembly 20 is pressed by the tightening force of the cover body 50 and the shell 10. The difficulty of assembly is reduced, and even if the number of microphones 30 increases, the difficulty of assembly will not increase. During the assembly process, the accuracy of the installation direction of the sealing assembly 20 is ensured by the anti-fool structure to avoid unqualified products after assembly, and it is also beneficial to improve the assembly efficiency. The position of the sealing assembly 20 is limited by the installation groove 111, and no manual alignment is required. It can also avoid the position of the sealing assembly 20 from being offset during the assembly process, which is beneficial to ensure the assembly effect.

[0053] In the illustrated example, the number of microphones 30 installed on the circuit board 40 is six, and the six microphones 30 are arranged on a circumference. In other embodiments, the multiple microphones 30 can also be arranged in a straight line shape, or in other shapes such as an ellipse; in other embodiments, the multiple microphones 30 can also be divided into two or more groups, and the arrangement form of the multiple microphones 30 in each group is the same, and each group is arranged in a certain form. The number and arrangement of the sealing assembly 20 and the mounting groove 111 are matched with the number and arrangement of the microphones 30.

[0054] As shown in the figure, after the above settings, the design value of the channel depth d of the microphone assembly 100 can be 3.5mm to obtain a good sound pickup effect. The channel depth d is the distance between the bottom surface of the inner hole of the microphone 30 and the outer surface of the shell wall 11 away from the circuit board 40.

[0055] Exemplarily, the microphone 30 may be a silicon microphone.

[0056] In some embodiments, the sealing pad 21 of the sealing assembly 20 can be made of sealing soft rubber or sealing foam, and the dustproof net 22 of the sealing assembly 20 can be made of a sound-permeable material. In this way, the second sound-permeable hole 211 of the sealing assembly 20 can be formed only on the sealing pad 21, and because the dustproof net 22 is sound-permeable, additional processing of the sound-permeable hole can be avoided.

[0057] In other embodiments, if the dustproof net 22 is not sound-permeable, sound-permeable holes may be processed on the dustproof net 22 .

[0058] In some embodiments, the dustproof net 22 of the sealing assembly 20 can be fixed to the side of the sealing gasket 21 facing the shell wall 11 by gluing. Exemplarily, the side of the dustproof net 22 that is bonded to the sealing gasket 21 can be provided with adhesive backing.

[0059] Please refer to Figures 6 to 9 , Figure 6 for Figure 3 Rear view of the middle shell, Figure 7 for Figure 6 A partial enlarged view of the J2 part in the middle. Figure 8 is a schematic diagram of the structure of the sealing assembly in a specific embodiment, Fig. 9 for Figure 8 Exploded view of the seal assembly shown. Figure 6 The perspective shown is the side of the housing 10 facing the cover 50 .

[0060] In this embodiment, the sealing assembly 20 includes a circular main body 201 and a convex portion 202 extending outward from the outer peripheral wall of the main body 201, and the extension direction of the convex portion 202 deviates from the radial direction of the main body 201; the "outside" here refers to the direction away from the center of the main body 201; accordingly, the installation groove 111 includes a first groove portion 1111 matched with the main body 201 and a second groove portion 1112 matched with the convex portion 202. The aforementioned first foolproof structure includes the second groove portion 1112, and the second foolproof structure includes the convex portion 202.

[0061] In the illustrated example, a sealing component 20 is provided with a protrusion 202, and correspondingly, the mounting groove 111 is also provided with a second groove portion 1112. It can be seen from the figure that since the extension direction of the protrusion 202 deviates from the radial direction of the main body 201, that is, there is an angle between the extension direction of the protrusion 202 and the radial direction of the main body 201, the sealing component 20 as a whole is an asymmetric structure, so that the sealing component 20 can only be placed in the mounting groove 111 in one installation direction. Through the cooperation of the dustproof net 22 and the sealing gasket 21, after the sealing component 20 is placed in the mounting groove 111, the dustproof net 22 faces the side of the shell wall portion 11, or the dustproof net 22 is in contact with the bottom wall of the mounting groove 111.

[0062] In the figure, the overall shape of the sealing assembly 20 is roughly in the shape of a "6", and accordingly, the overall shape of the mounting groove 111 is also roughly in the shape of a "6".

[0063] In addition to the aforementioned implementations, the first fool-proof structure and the second fool-proof structure may also have other forms, as long as it is ensured that the sealing assembly 20 can only be placed into the installation groove 111 with the dustproof net 22 facing the shell wall 11.

[0064] In some embodiments, the sealing gasket 21 of the sealing assembly 20 may be provided with a groove 212 opening toward the shell wall 11, and the dustproof net 22 is located in the groove 212. In this way, the dustproof net 22 can be limited, and the assembly of the dustproof net 22 and the sealing gasket 21 is also convenient.

[0065] Combination Figure 8 and Fig. 9 It is understood that after the dustproof net 22 is placed in the groove 212 of the sealing gasket 21, the overall shape of the sealing assembly 20 is actually equivalent to the overall shape of the sealing gasket 21. In application, the sealing gasket 21 can be set to have an anti-foolproof structure, and the installation groove 111 can be matched.

[0066] In other embodiments, the dustproof net 22 may also be consistent with the shape of the sealing gasket 21 .

[0067] In this embodiment, a positioning structure is provided between the housing 10 and the circuit board 40 , and the positioning structure includes a plurality of groups of positioning posts 13 and positioning holes 42 that fit together. One of the positioning posts 13 and the positioning holes 42 is provided on the housing 10 , and the other is provided on the circuit board 40 .

[0068] By setting the positioning structure, it is convenient to determine the relative positions of the circuit board 40 and the sealing assembly 20 when the circuit board 40 and the shell 10 are assembled, so as to ensure that the sealing assembly 20 and the microphone 30 on the circuit board 40 correspond to each other, and ensure that the inner hole of the microphone 30, the second sound hole 211 of the sealing assembly 20 and the first sound hole 112 of the shell wall 11 can form a closed sound channel.

[0069] In this embodiment, the microphone 30 is mounted on the side of the circuit board 40 facing away from the sealing assembly 20. This arrangement facilitates the circuit board 40 to press the sealing assembly 20. Accordingly, the circuit board 40 has a sound pickup hole 41 that communicates with the inner hole of the microphone 30.

[0070] To ensure the installation direction of the circuit board 40 , that is, to ensure that the microphone 30 of the circuit board 40 faces away from the sealing assembly 20 when the circuit board 40 and the housing 10 are installed, an anti-fool structure may also be provided between the circuit board 40 and the housing 10 .

[0071] In this embodiment, at least one of the plurality of positioning posts 13 is an anti-mistake post, and at least one of the plurality of positioning holes 42 is an anti-mistake hole that cooperates with the anti-mistake post. It can be understood that the structures of the anti-mistake post and the anti-mistake hole that match each other are different from the structures of other positioning posts 13 and positioning holes 42, so as to achieve an anti-mistake effect, that is, an anti-wrong installation effect.

[0072] When the circuit board 40 is assembled with the shell 10 with the microphone 30 facing away from the sealing component 20, the positions of the anti-foolproof column and the anti-foolproof hole correspond, and the anti-foolproof column can be inserted into the anti-foolproof hole; when the circuit board 40 is assembled with the shell 10 with the microphone 30 facing the sealing component 20, the positions of the anti-foolproof column and the anti-foolproof hole do not correspond, and the other positioning holes 42 corresponding to the positions of the anti-foolproof columns cannot cooperate with them, and the other positioning columns 13 corresponding to the positions of the anti-foolproof holes cannot cooperate with them.

[0073] The following is an example of a specific setting method for the foolproof column and foolproof hole. Please refer to Figures 10 to 12 , Fig.10 for Figure 6 A partial enlarged view of the J3 part. Fig.11 for Figure 3 The front diagram of the circuit board. Fig.12 for Figure 3 Schematic diagram of the back side of the circuit board.

[0074] Here, the side of the circuit board 40 facing the shell wall 11 is defined as the front side of the circuit board 40, and correspondingly, the side of the circuit board 40 facing the cover 50 is defined as the back side of the circuit board 40. In other words, Fig.11 The side of the circuit board 40 facing the housing wall 11 is shown. Fig.12 The side of the circuit board 40 facing the cover 50 is shown.

[0075] In the illustrated example, the shell wall 11 is circular, and the circuit board 40 matched with the shell wall 11 is roughly circular. The positioning posts 13 are arranged on the shell wall 11, and the positioning holes 42 are arranged on the circuit board 40. There are six positioning posts 13 distributed on a circumference, and there are six positioning holes 42, which are matched with the six positioning posts 13 respectively.

[0076] Combination Figure 6 The multiple positioning posts 13 of the housing 10 include a first positioning post 13A and a second positioning post 13B. In the illustrated example, the first positioning post 13A and the second positioning post 13B are both cylindrical structures, and the outer diameters of the cylindrical parts of the two are consistent. The first positioning post 13A is set as an anti-fool column. Specifically, the outer peripheral wall of the first positioning post 13A is provided with a protrusion 132A protruding outward in the radial direction. The protrusion 132A serves as an anti-fool structure. After the protrusion 132A is provided, the maximum radial dimension of the first positioning post 13A is greater than that of the second positioning post 13B.

[0077] Combination Fig.11 and Fig.12The multiple positioning holes 42 of the circuit board 40 include a first positioning hole 42A and a second positioning hole 42B. The first positioning hole 42A cooperates with the first positioning column 13A, and the first positioning hole 42A and the second positioning hole 42B cooperate with the second positioning column 13B. The diameter of the first positioning hole 42A is larger than the diameter of the second positioning hole 42B, so that the first positioning hole 42A can be sheathed on the first positioning column 13A provided with a protrusion 132A.

[0078] In the illustrated example, when the circuit board 40 is installed in the normal installation direction, the first positioning hole 42A cooperates with the first positioning column 13A, and the second positioning hole 42B cooperates with the second positioning column 13B. When the circuit board 40 is installed in reverse, the first positioning hole 42A corresponds to the position of the second positioning column 13B, and the second positioning hole 42B corresponds to the position of the first positioning column 13A. Although the second positioning column 13B can be inserted into the first positioning hole 42A, because the aperture of the second positioning hole 42B is smaller than the maximum outer diameter of the first positioning column 13A with the protrusion 132A, the second positioning hole 42B cannot cooperate with the first positioning column 13A, that is, the circuit board 40 cannot be installed, thereby achieving the effect of preventing the circuit board 40 from being installed in reverse.

[0079] When at least one positioning column 13 is used as an anti-foolproof column, in addition to the above-mentioned anti-foolproof structure, other methods may be used; for example, the cross-sectional shape of the positioning column 13 used as the anti-foolproof column is different from the cross-sectional shapes of other positioning columns 13 .

[0080] In the above, at least one of the plurality of positioning posts 13 is configured as an anti-foolproof post. In other embodiments, an additional anti-foolproof structure may be provided between the housing 10 and the circuit board 40 .

[0081] In this embodiment, the positioning hole 42 is provided on the circuit board 40, and the positioning post 13 is provided on the housing 10; in other embodiments, the positioning hole 42 may also be provided on the housing 10, and the positioning post 13 may be provided on the circuit board 40. In comparison, providing the positioning post 13 on the circuit board 40 will increase the processing complexity of the circuit board 40, so it is better to provide the positioning hole 42 on the circuit board 40.

[0082] Please refer to Figures 13 to 15 , Fig.13 for Figure 3 The structural diagram of the middle cover body, Fig.14 for Fig.13 The front view of the cover body is shown in FIG. Fig.15 for Fig.13 Here, the front side of the cover 50 refers to the side facing the shell wall 11 , and the back side of the cover 50 refers to the side facing away from the shell wall 11 .

[0083] In this embodiment, the positioning column 13 provided on the shell wall portion 11 is also used to be fixedly connected with the cover body 50. Specifically, the cover body 50 has a mounting hole 512 that cooperates with the positioning column 13, and the positioning column 13 has a fastening hole 131. The cover body 50 and the housing 10 are fixedly connected by a fastener 60. The fastener 60 passes through the mounting hole 512 of the cover body 50 and cooperates with the fastening hole 131 of the positioning column 13 to fix the cover body 50 and the housing 10.

[0084] For example, the fastener 60 may be a screw, and the fastening hole 131 of the positioning column 13 may be a threaded hole that cooperates with the screw.

[0085] In one implementation, a mounting boss 51 is provided on one side of the cover 50 facing the shell wall 11, and the mounting boss 51 has a slot 511 that is inserted and matched with the positioning column 13, and the mounting hole 512 is located at the bottom wall of the slot 511. After such a configuration, during assembly, the positioning hole 42 of the circuit board 40 is sleeved on the positioning column 13, and after being overlapped with the shell wall 11, the cover 50 is matched with the shell wall 11, and the relative position of the cover 50 and the shell wall 11 can be determined by the matching of the positioning column 13 and the slot 511, and then the cover 50 and the shell 10 are fixed by the fastener 60.

[0086] In this embodiment, in order to facilitate the assembly of the circuit board 40, the cover body 50 and the shell wall portion 11, a first guide structure is provided on the shell 10, and a second guide structure cooperating with the first guide structure is provided on both the circuit board 40 and the cover body 50.

[0087] Specifically, Figure 6 As shown, the outer periphery of the shell wall portion 11 of the shell 10 is provided with guide ribs 14. Fig.11 and Fig.12 As shown, the outer periphery of the circuit board 40 is provided with a first guide groove 43 which cooperates with the guide rib 14. Figures 13 to 15 As shown, the outer periphery of the cover body 50 is provided with a second guide groove 52 which cooperates with the guide rib 14. The guide rib 14 is the aforementioned first guide structure, and the first guide groove 43 and the second guide groove 52 are the aforementioned second guide structure.

[0088] In this embodiment, the housing 10 includes a housing peripheral wall 12 disposed on the outer periphery of the housing wall portion 11. Figures 3 to 5 As shown, in this way, the shell wall portion 11 and the shell peripheral wall 12 enclose a mounting cavity, and the circuit board 40 and the cover body 50 are located in the mounting cavity. After assembly, the circuit board 40 is located in a closed space enclosed by the cover body 50, the shell wall portion 11 and the shell peripheral wall 12, which can provide better protection for the circuit board 40.

[0089] As shown in the figure, the shell wall 12 has a wire groove 15, and the cover 50 has a notch 53 to avoid the wire groove 15. This arrangement facilitates the connection line of the circuit board 40 to be led out of the installation cavity to communicate with other components (such as a main board, etc.) outside the installation cavity.

[0090] Specifically, two opposite ribs 151 are provided on one side of the shell peripheral wall 12 close to the installation cavity, and a wire channel connected to the wire groove 15 is formed between the two ribs 151. The provision of the ribs 151 can improve the strength of the location of the wire groove 15 on the one hand, and can guide the connection line on the other hand.

[0091] An embodiment of the present application further provides an electronic device, which includes a main board and a microphone assembly 100. The microphone assembly 100 is the microphone assembly 100 introduced in the above embodiment. The circuit board 40 of the microphone assembly 100 is communicatively connected to the main board of the electronic device.

[0092] The electronic device may be a terminal device with a voice interaction function, such as a voice recorder, a smart home device, a cleaning robot, etc.

[0093] Specific examples are used herein to illustrate the principles and implementation methods of the present application, and the description of the above embodiments is only used to help understand the method and core ideas of the present application. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present application, several improvements and modifications can be made to the present application, and these improvements and modifications also fall within the scope of protection of the claims of the present application.

Claims

1. A microphone assembly, characterized in that: It includes a shell, a sealing component, a plurality of microphones, a circuit board and a cover; The shell wall portion of the housing has a mounting groove, the sealing assembly is placed in the mounting groove, and a portion of the sealing assembly extends out of the mounting groove; The microphone is mounted on the circuit board, the circuit board is located between the shell wall and the cover, the cover is fixedly connected to the shell, the cover presses against the circuit board so that the circuit board presses the sealing assembly, and the position of the microphone corresponds to the position of the sealing assembly; The sealing assembly includes a sealing gasket and a dustproof net, the dustproof net is fixed to the side of the sealing gasket facing away from the circuit board, the mounting groove has a first fool-proof structure, and the sealing assembly has a second fool-proof structure that cooperates with the first fool-proof structure.

2. The microphone assembly according to claim 1, characterized in that The sealing assembly includes a circular main body and a convex portion extending outward from the outer peripheral wall of the main body, and the extension direction of the convex portion deviates from the radial direction of the main body; the installation groove includes a first groove portion cooperating with the main body and a second groove portion cooperating with the convex portion; the first anti-foolproofing structure includes the second groove portion, and the second anti-foolproofing structure includes the convex portion.

3. The microphone assembly according to claim 1, characterized in that The sealing gasket has a groove with an opening facing the shell wall portion, and the dustproof net is located in the groove.

4. The microphone assembly according to any one of claims 1 to 3, characterized in that: A positioning structure is provided between the shell and the circuit board, and the positioning structure includes a plurality of groups of plug-in positioning posts and positioning holes, one of the positioning posts and the positioning holes is provided on the shell, and the other of the positioning posts and the positioning holes is provided on the circuit board.

5. The microphone assembly according to claim 4, characterized in that: The microphone is installed on the side of the circuit board facing away from the sealing component; among the multiple positioning columns, at least one positioning column is an anti-foolproof column, and among the multiple positioning holes, at least one positioning hole is an anti-foolproof hole that cooperates with the anti-foolproof column.

6. The microphone assembly according to claim 4, characterized in that: The positioning column is arranged on the housing, and the positioning hole is arranged on the circuit board; The cover body has a mounting hole matched with the positioning column, the positioning column has a fastening hole, the cover body and the shell are fixedly connected by a fastener, and the fastener passes through the mounting hole and matches with the fastening hole.

7. The microphone assembly according to claim 6, characterized in that A mounting boss is provided on one side of the cover body facing the shell wall portion, and a slot for inserting and fitting with the positioning column is provided on one side of the mounting boss, and the mounting hole is provided on the bottom wall of the slot.

8. The microphone assembly according to any one of claims 1 to 3, characterized in that: The housing is provided with a first guide structure, and both the circuit board and the cover are provided with a second guide structure matched with the first guide structure.

9. The microphone assembly according to any one of claims 1 to 3, characterized in that: The shell includes a shell peripheral wall arranged on the outer periphery of the shell wall portion, the shell wall portion and the shell peripheral wall enclose an installation cavity, the circuit board and the cover body are located in the installation cavity, the shell peripheral wall has a wire groove, and the cover body has a notch to avoid the wire groove.

10. An electronic device, characterized in that: It comprises a main board and a microphone assembly, wherein the microphone assembly is the microphone assembly according to any one of claims 1 to 9, and the circuit board is communicatively connected with the main board.

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