MIC sealing structure and display device

Abstract

The utility model relates to the technical field of electronic equipment, in particular to an MIC sealing structure and a display device.The MIC sealing structure comprises a middle frame, an MIC mainboard, an MIC and a sealing layer, the first end face of the MIC mainboard is connected with the inner side frame of the middle frame in a sealed mode through the sealing layer, the second end face, away from the inner side frame, of the MIC mainboard is provided with at least one MIC, the MIC is sealed and fixed to the second end face, and the MIC is connected with the middle frame through the sealing layer. And a sound through hole which penetrates through the MIC, the MIC mainboard, the sealing layer and the inner side frame and is communicated with the external space is formed among the MIC, the MIC mainboard, the The utility model further provides a display device. According to the utility model, the fastening assembly is arranged, the fastening assembly passes through the middle frame, the sealing layer, the MIC mainboard and the bracket, and the MIC mainboard, the sealing layer and the side frame of the middle frame are fastened and connected in sequence through the fastening bracket, so that the structure is compact, the occupied space is small, and the air tightness is improved at the same time.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic equipment, and in particular to a MIC sealing structure and a display device. Background Art

[0002] The display device is usually provided with a MIC due to functional requirements. The MIC is connected to and controlled by a MIC mainboard (ie, a MIC control board). The MIC and the MIC mainboard constitute a MIC assembly.

[0003] At present, there is a side sound-inlet setting for MIC components. The structural method of MIC side sound-inlet is mostly to use the positive sound-inlet MIC to fix it through the inner side locking screws or the back shell long bone position pressing structure. Both of these structural methods have certain disadvantages. Among them, the side locking screw method---the airtightness of the MIC can be improved, but the mold structure of the long screw column on the inner side of the middle frame shell is complicated, the assembly is inconvenient, and the overall structure requires a large space; the back shell long bone position pressing method---the overall structure space can be made small, but the injection molding size tolerance between the back shell and the middle frame shell that positions the MIC is inconsistent, resulting in inconsistent assembly offset of the two shell parts, thereby affecting the strength of the bone position pressing the MIC, which can easily cause the MIC to have poor airtightness.

[0004] Therefore, there is an urgent need for a MIC sealing structure that has a simple structure, occupies a small space, and has good air tightness of the MIC. Utility Model Content

[0005] In view of this, the technical problem to be solved by the utility model is to provide a MIC sealing structure to solve the problem of poor airtightness when the structure occupies a small space.

[0006] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0007] According to one aspect of the utility model, a MIC sealing structure is provided, comprising a middle frame, a MIC mainboard, a MIC and a sealing layer, wherein a first end face of the MIC mainboard is sealed to an inner frame of the middle frame via the sealing layer, at least one MIC is provided on a second end face of the MIC mainboard away from the inner frame, the MIC is sealed and fixed on the second end face, and a sound hole is provided between the MIC, the MIC mainboard, the sealing layer and the inner frame and connected to an external space.

[0008] Preferably, the MIC sealing structure further includes a bracket and a fastening assembly, the fastening assembly passes through the middle frame, the sealing layer and the MIC mainboard, and the MIC mainboard, the sealing layer and the inner side frame of the middle frame are fastened and connected in sequence through the fastening bracket.

[0009] Preferably, a groove for accommodating the MIC is provided at a position of the bracket corresponding to the MIC.

[0010] Preferably, the fastening assembly includes a bolt connection assembly, a nut connection assembly, a rivet connection assembly or a screw connection assembly.

[0011] Preferably, the sealing layer comprises water-retaining foam glue or foam filler.

[0012] Preferably, the first end surface of the MIC mainboard is bonded to the inner side frame of the middle frame by means of water-retaining foam glue or foam filler.

[0013] Preferably, the bracket is glued to the second end surface of the MIC mainboard on the side close to the MIC through the bracket backing adhesive.

[0014] Preferably, the fastening assembly is a screw connection assembly, which includes a first screw and a second screw. The side frame of the middle frame is provided with two first through holes, the MIC mainboard is provided with two second through holes at positions corresponding to the first through holes, and the bracket is provided with two third through holes at positions corresponding to the first through holes. The first screw and the second screw pass through the first through hole, the second through hole, and the third through hole and are fastened to the bracket.

[0015] Preferably, the edges of the MIC are sealed with glue.

[0016] The utility model also provides a display device, which includes a middle frame, a MIC mainboard, a MIC and a sealing layer. The first end surface of the MIC mainboard is sealed and connected to the inner frame of the middle frame through the sealing layer. The second end surface of the MIC mainboard away from the inner frame is provided with at least one MIC. The MIC is sealed and fixed on the second end surface. A sound hole is provided between the MIC, the MIC mainboard, the sealing layer and the inner frame and is connected to the external space. The utility model also includes a circuit board, which is electrically connected to the MIC mainboard.

[0017] Compared with the prior art, the MIC sealing structure provided by the utility model sets the MIC on the side of the MIC mainboard away from the external screw holes of the middle frame, and sets a fastening component and a sealing layer, passes the fastening component through the middle frame, the sealing layer, the MIC mainboard and the bracket, and the MIC mainboard, the sealing layer and the side frame of the middle frame are fastened and connected in sequence through the fastening bracket. The structure is compact, the space occupied is small, and the air tightness is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a cross-section of a MIC sealing structure provided in Embodiment 1 of the present utility model.

[0019] Figure 2 This is a schematic diagram of the enlarged structure of the cross section A of a MIC sealing structure provided in the first embodiment of the utility model.

[0020] Figure 3 This is a schematic diagram of the exploded structure of a display device provided in Embodiment 1 of the present utility model.

[0021] Figure 4 This is a schematic structural diagram of a bracket backing adhesive in a MIC sealing structure provided in Example 1 of the utility model. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0023] like Figures 1 to 4 As shown, Figure 1 This is a structural schematic diagram of a cross-section of a MIC sealing structure provided in Embodiment 1 of the present utility model. Figure 2 This is a schematic diagram of the enlarged structure of the cross section A of a MIC sealing structure provided in the first embodiment of the utility model. Figure 3 This is a schematic diagram of the exploded structure of a display device provided in Embodiment 1 of the present utility model. Figure 4 A schematic diagram of the backing adhesive and structure of a bracket in a MIC sealing structure provided in the first embodiment of the utility model.

[0024] In this embodiment, the MIC sealing structure includes a middle frame 600, a MIC mainboard 400, a MIC420 and a sealing layer 500. The first end surface of the MIC mainboard 400 is sealed and connected to the inner frame of the middle frame 600 through the sealing layer 500. At least one MIC420 is provided on the second end surface of the MIC mainboard 400 away from the inner frame. The MIC420 is sealed and fixed on the second end surface. A sound hole 620 is provided between the MIC420, the MIC mainboard 400, the sealing layer 500 and the inner frame and is connected to the external space.

[0025] In this embodiment, MIC is a microphone, and the MIC main board is a microphone main board, that is, a main board electrically connected to the microphone for controlling the microphone.

[0026] In some embodiments, the MIC sealing structure includes a middle frame 600, a fastening assembly, a MIC mainboard 400 and a bracket 200. The two side end surfaces of the MIC mainboard 400 are respectively attached to the inner side frame of the middle frame 600 and the bracket 200. The fastening assembly passes through the middle frame 600 and the MIC mainboard 400, and the inner side frames of the MIC mainboard 400 and the middle frame 600 are fastened and connected in sequence by fastening the bracket 200. The MIC mainboard 400 is provided with at least one MIC420, and the MIC420 is arranged on a side of the MIC mainboard 400 close to the bracket 200. The bracket 200 is provided with a groove 210 for accommodating the MIC420 at a position corresponding to the MIC420, and the middle frame 600 and the MIC mainboard 400 are respectively provided with sound holes 620 at positions corresponding to the MIC420. In this embodiment, a MIC sealing structure further includes a sealing layer 500, the sealing layer 500 is attached to the side frame 640 of the middle frame 600, the two side end surfaces of the MIC mainboard 400 are attached to the sealing layer 500 and the bracket 200 respectively, the fastening assembly passes through the middle frame 600, the sealing layer 500 and the MIC mainboard 400, and the MIC mainboard 400, the sealing layer 500 and the side frame 640 of the middle frame 600 are fastened and connected in sequence by the fastening bracket 200. The MIC420 is arranged on a side of the MIC mainboard 400 close to the bracket 200.

[0027] In some embodiments, both side end surfaces of the MIC mainboard 400 are respectively bonded to the inner side frame of the middle frame 600 and the bracket 200. The sealing layer 500 is provided with a sealing layer sound hole corresponding to the sound hole 620 at a position corresponding to the MIC 420.

[0028] In some embodiments, the fastening assembly may be one of a bolt connection assembly, a nut connection assembly, a rivet connection assembly or a screw connection assembly, and is used to fasten the bracket 200, the MIC mainboard 400 and the sealing layer 500 together in sequence and press them onto the side frame 640 of the middle frame 600 through the sealing layer 500. The sealing layer 500 includes water-retaining foam glue or foam filler, and in the narrow edge processing state, the above materials can form a soft sealing pad on the bonding surface, thereby improving the airtightness of the MIC and preventing the intrusion of moisture and dust.

[0029] By tightening the components, the sealing between the sound inlet surface of the MIC and the side of the middle frame can be better ensured.

[0030] look in Figure 2 and Figure 3, a threaded hole 220 is provided on the bracket 200, and a first through hole 630 is provided on the frame 600 at a position corresponding to the threaded hole 220. The bracket 200, the bracket adhesive 300, the MIC mainboard 400 and the water-retaining foam adhesive 500 are stacked in sequence and adhered to the side frame 640 of the middle frame 600 through the water-retaining foam adhesive 500. At this time, the screw 610 can pass through the first through hole 630 and rotate into the threaded hole 220. During the tightening process of the screw 610, the nut of the screw 610 will abut against the side frame 640 of the middle frame 600, thereby tightening the bracket 200 to the side of the side frame 640 of the frame 600, thereby making the bracket 200, the bracket adhesive 300, the MIC mainboard 400 and the water-retaining foam adhesive 500 closely adhere to the side frame 640 in sequence.

[0031] Recombination Figure 3 The detailed structure of the display device is introduced in detail. In this embodiment, the display device includes a screw 610, a middle frame 600, a water-seized foam glue 500, a MIC mainboard 400, a bracket adhesive 300, a bracket 200 and a circuit board 100. Among them, the middle frame 600 is roughly in the shape of a cuboid. When its upper end panel is opened, the first accommodation space of the middle frame 600 can be seen. The circuit board 100 can be fixed at the bottom of the above-mentioned first accommodation space, and there is a groove portion 110 at the left end of the circuit board 100. The groove portion 110 and the side frame 640 of the middle frame 600 form a second accommodation space, and the MIC sealing structure is placed in the second accommodation space. Among them, the middle frame 600 includes a side frame 640 of the middle frame, and a pair of sound holes 620 and a pair of first through holes 630 are provided on the side frame 640. The sealing layer 500 is adhered to the first release paper, and there are through holes corresponding to the sound holes 620 and the first through holes 630 on the first release paper. The MIC mainboard 400 has a second sound hole 430 and a second through hole 440 corresponding to the sound hole 620 and the first through hole 630. The body of the MIC mainboard 400 is electrically connected to the circuit board 100 via a connecting line 410. The support adhesive 300 is adhered to the second release paper, and the second release paper also has a third sound hole 320 and a third through hole 310 corresponding to the sound hole 620 and the first through hole 630. The support 200 has grooves 210 arranged at intervals on one side corresponding to the frame 600, and the end surface of the support 200 on one side corresponding to the frame 600 is also provided with a fourth sound hole 230 and a fourth through hole 220 corresponding to the sound hole 620 and the first through hole 630. The circuit board 100 has a groove portion 110 on one side corresponding to the frame 600.

[0032] The specific steps of placing the MIC sealing structure into the second accommodation space are as follows:

[0033] 1. Stick the water-retaining foam adhesive on one end surface of the MIC mainboard 400;

[0034] 2. Stick the bracket adhesive 300 to cover the other side of the MIC mainboard 400;

[0035] 3. Attach one end surface of the MIC mainboard 400 with the water-retaining foam adhesive 500 to the side frame 640 of the middle frame 600, and align the two through holes spaced apart on the side frame 640 of the middle frame with the through holes on the MIC mainboard 400 and the water-retaining foam adhesive 500;

[0036] 4. Lay one end surface of the MIC mainboard 400 with the support adhesive 300 on one side of the support 200, and align the two through holes on the support adhesive 300 and the two through holes on the MIC mainboard 400;

[0037] 5. Finally, two screws 610 are passed through the two through holes on the middle frame side frame 640, the water-retention foam glue 500 and the MIC mainboard 400 and rotated into the two threaded holes on the bracket 200. As the screws 610 and the bracket 200 are tightened, the bracket 200 will press the MIC mainboard 400 and the water-retention foam glue 500 onto the side frame 640 of the middle frame 600.

[0038] In this embodiment, two MICs 420 are arranged at intervals on one side of the MIC main board 400 close to the bracket 200, and two grooves 210 are arranged on the bracket 200 corresponding to the positions of the two MICs 420, and the two MICs 420 are respectively accommodated in the two grooves 210. Two sound holes 620 are arranged through the side frame 640 of the middle frame 600 corresponding to the positions of the MICs 420, and the two sound holes 620 are used to transmit sound to the MICs 420.

[0039] In this embodiment, the sealing layer 500 may be a water-retaining foam adhesive or a foam filler. The water-retaining foam adhesive or the foam filler is glued to the side frame 640 of the middle frame 600; the first release paper covered by the water-retaining foam adhesive 500 is glued to the MIC mainboard 400; the second release paper covered by the bracket adhesive 300 is glued to the MIC mainboard 400. The bracket adhesive 300 is glued to the MIC mainboard 400. The MIC mainboard 400 is electrically connected to the circuit board 100 through the connecting wire 410. The bracket adhesive 300 is glued to the bracket 200. The water-retaining foam adhesive or the foam filler has the functions of waterproofing, shockproofing and sealing, and can improve air tightness.

[0040] In this embodiment, see Figure 4 A fourth through hole is provided at a position of the support adhesive 300 corresponding to the MIC 420, and glue is applied to the connection points around the edges of the fourth through hole corresponding to the MIC 420 to improve air tightness.

[0041] In this embodiment, the sealing layer 500 and the MIC main board 400 are both in the shape of rectangular sheets. The bracket 200 has a rectangular parallelepiped structure with a certain thickness, and has two grooves 210 for accommodating the MIC 420 and two threaded holes 220 thereon.

[0042] In this embodiment, the screw 610 includes a first screw and a second screw, and the first screw and the second screw are composed of a nut and a threaded rod. The same through holes are set at two positions of the side frame 640 of the middle frame 600, the water-retention foam glue 500, the MIC mainboard 400, the bracket adhesive 300 and the bracket 200. The threaded rod of the screw 610 passes through the through holes on the middle frame 600, the water-retention foam glue 500, the MIC mainboard 400 and the bracket adhesive 300 and rotates into the threaded hole 630 on the bracket 200. Since the nut is against the side frame 640 of the middle frame 600, continuing to rotate the threaded rod will make the bracket 200 approach the side frame 640 of the middle frame 600, thereby causing the bracket 200 to squeeze the bracket adhesive 300 that is attached to it, and further press the MIC mainboard 400 and the water-retention foam glue 500 to fit on the side frame 640 of the middle frame 600. Such a MIC sealing structure is compact, occupies little space, and improves the airtightness of the MIC (the old structure seal has an isolation degree of about 20dB, and the new structure seal has an isolation degree of 40dB).

[0043] The MIC sealing structure of the utility model utilizes the regularity and comprehensiveness of the MIC mainboard 400 and a certain hardness, and combines it with the flexibility of the sealing layer 500, so that the MIC mainboard 400 is fully and stably sealed and connected to the inner frame of the middle frame 600. The sealing layer 500 is like a soft sealing pad, which has the functions of sealing, waterproofing, bonding and sound insulation. The sealing layer can also be just glue. At the same time, the MIC420 is sealed and fixed on the back of the MIC mainboard 400. Specifically, the MIC420 can be welded on the MIC mainboard 400. In this way, the sound of the MIC420 can be transmitted to the external space through the sound hole 620, and the structural sealing corresponding to the sound hole 620 is very comprehensive and stable. In some embodiments, adding a bracket 200 and a fastening component can further improve the isolation of the MIC sealing structure. The isolation refers to the strength of the electrical isolation effect between the input and output ends of the isolator. The higher the isolation, the better the isolation effect between the input and output, the smaller the interference between the output signal and the input signal, and the higher the stability.

[0044] The utility model also provides a display device, comprising the above-mentioned MIC sealing structure and a circuit board 100, wherein the circuit board 100 is electrically connected to a MIC main board 400. In this embodiment, the display device can be specifically an intelligent voice switch with a display panel. While the structure is compact, the air tightness of the MIC is improved to avoid affecting the sound reception effect of the device, thereby affecting the user's use effect.

[0045] The preferred embodiments of the present invention are described above with reference to the accompanying drawings, but the scope of the present invention is not limited thereby. A person skilled in the art may implement the present invention in a variety of variations without departing from the scope and essence of the present invention, such as using a feature of one embodiment to obtain another embodiment. Any modification, equivalent substitution and improvement made within the technical concept of the present invention shall be within the scope of the present invention.

Claims

1. A MIC sealing structure, characterized in that: The invention comprises a middle frame, a MIC mainboard, a MIC and a sealing layer, wherein a first end surface of the MIC mainboard is sealed and connected to an inner frame of the middle frame through the sealing layer, a second end surface of the MIC mainboard away from the inner frame is provided with at least one MIC, the MIC is sealed and fixed on the second end surface, and a sound hole penetrating through and communicating with an external space is provided between the MIC, the MIC mainboard, the sealing layer and the inner frame.

2. The MIC sealing structure according to claim 1, characterized in that: The MIC sealing structure also includes a bracket and a fastening component, the fastening component passes through the middle frame, the sealing layer and the MIC mainboard, and by fastening the bracket, the MIC mainboard, the sealing layer and the inner side frame of the middle frame are fastened and connected in sequence.

3. The MIC sealing structure according to claim 2, characterized in that: The bracket is provided with a groove for accommodating the MIC at a position corresponding to the MIC.

4. The MIC sealing structure according to claim 2, characterized in that: The fastening assembly includes a bolt connection assembly, a nut connection assembly, a rivet connection assembly or a screw connection assembly.

5. The MIC sealing structure according to claim 1, characterized in that: The sealing layer comprises water-retaining foam glue or foam filler.

6. The MIC sealing structure according to claim 5, characterized in that: The first end surface of the MIC mainboard is glued to the inner side frame of the middle frame through the water-retaining foam glue or the foam filler.

7. The MIC sealing structure according to claim 2, characterized in that: The bracket is glued to the second end surface of the MIC mainboard on a side close to the MIC through the bracket backing adhesive.

8. The MIC sealing structure according to claim 4, characterized in that: The fastening assembly is a screw connection assembly, and the screw connection assembly includes a first screw and a second screw. The side frame of the middle frame is provided with two first through holes, the MIC mainboard is provided with two second through holes at positions corresponding to the first through holes, and the bracket is provided with two third through holes at positions corresponding to the first through holes. The first screw and the second screw pass through the first through hole, the second through hole, and the third through hole and are fastened to the bracket.

9. The MIC sealing structure according to claim 2, characterized in that: The edge connections around the MIC are sealed with glue.

10. A display device, characterized in that: The display device comprises the MIC sealing structure as claimed in any one of claims 1 to 9, and the display device further comprises a circuit board, and the circuit board is electrically connected to the MIC mainboard.

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