CN106358102B - Waterproof microphone, implementation method thereof and electronic product - Google Patents
Waterproof microphone, implementation method thereof and electronic product Download PDFInfo
- Publication number
- CN106358102B CN106358102B CN201610850885.3A CN201610850885A CN106358102B CN 106358102 B CN106358102 B CN 106358102B CN 201610850885 A CN201610850885 A CN 201610850885A CN 106358102 B CN106358102 B CN 106358102B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R1/00—Details of transducers, loudspeakers or microphones
- H04R1/08—Mouthpieces; Microphones; Attachments therefor
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R31/00—Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Manufacturing & Machinery (AREA)
- Telephone Set Structure (AREA)
Abstract
The invention discloses a waterproof microphone, an implementation method thereof and an electronic product. The waterproof microphone comprises a shell, wherein a sound inlet is formed in the shell, and a waterproof membrane component is adhered to the inner side of the shell at the sound inlet; the inner side of the shell is also provided with a limiting groove, the rubber mat with the sound hole is bonded with the microphone assembly to form an assembly, the assembly is arranged in the limiting groove on the inner side of the shell in a state of extruding towards the shell side, so that the rubber mat is in sealing contact with the waterproof membrane assembly, and the rubber mat is fixed in the limiting groove through dispensing in the extruding state. According to the invention, the rubber pad and the microphone assembly with the sound hole are fixed by dispensing in a pressure-maintaining state, so that an elastic pressing sheet in the prior art is replaced, the product cost can be obviously reduced, and compared with the use of the elastic pressing sheet, the sealing stability of the pressure-maintaining dispensing fixing mode is higher, the requirement on the size of a part is reduced, the design precision can be reduced, and the processing difficulty and cost are reduced.
Description
Technical Field
The invention relates to the technical field of microphones, in particular to a waterproof microphone, an implementation method thereof and an electronic product.
Background
The consumer electronics market has developed rapidly and new products are continuously emerging. Meanwhile, with the improvement of consumer demands and the expansion of application fields, the functions of consumer electronics become more and more perfect. Waterproof is a basic requirement, and is a function which most of the existing products have.
The waterproof performance is divided into 8 grades of IPX1-IPX8 according to the standard, and when the product is a single whole and has no requirement of interaction or communication with the outside, the waterproof function is easy to realize. However, when the structure like a microphone appears in the product, the waterproof performance of more than 7 levels is still a difficulty in the industry. In the existing electronic product, the waterproof function of the microphone can be realized by the way that the part body is waterproof and the waterproof breathable film is added on the shell of the product.
The microphone with the waterproof body has the advantages of limited internal space, higher cost and more function limitation. In comparison, waterproofing of the microphone site by means of a waterproof, breathable membrane is an advantageous option. In order to ensure the acoustic performance of the product, a sound transmission path from the breathable film to a microphone sound hole must be sealed, and an elastic body is assembled between the breathable film and the microphone to form a closed sound cavity required by the microphone to work, as shown in fig. 1, the existing product mostly adopts a mode of adding a waterproof film component 1 and a microphone silica gel sleeve 2 and an elastic pressing sheet 4 to realize the waterproofing of the microphone component 3, the cost is higher, on the other hand, the elastic pressing sheet 4 is vibrated, the extrusion can generate displacement deformation and the like, the sealing performance is unstable, and the microphone of the existing product is mostly in a top sound production mode, the microphone is directly wrapped in the silica gel sleeve to realize the sealing of the microphone, and the sealing performance is not stable enough.
Disclosure of Invention
In view of the problems of the prior art that the waterproof structure of the microphone is high in cost and the sealing performance is not stable, the waterproof microphone, the implementation method thereof and the electronic product are provided in order to overcome the problems or at least partially solve the problems.
According to one aspect of the invention, a waterproof microphone is provided, which comprises a shell, wherein a sound inlet is arranged on the shell, and a waterproof membrane assembly is adhered to the inner side of the shell at the sound inlet; the inner side of the shell is also provided with a limiting groove, the rubber mat with the sound hole is bonded with the microphone assembly to form a combined body, the combined body is arranged in the limiting groove on the inner side of the shell in a state of extruding towards the shell side, so that the rubber mat is in sealing contact with the waterproof membrane assembly, and the rubber mat is fixed in the limiting groove through dispensing in the extruding state.
Optionally, the microphone assembly comprises a reinforcing plate, an FPC and a microphone with a sounding bottom, which are sequentially arranged, the reinforcing plate, the FPC and the microphone are adhered together by a surface mounting technology, the sounding hole of the microphone is located on one side facing the FPC, and the reinforcing plate and the FPC are provided with a sounding hole aligned with the sounding hole of the microphone.
Optionally, a glue dispensing groove is formed in the limiting groove of the shell and used for improving the bonding strength of the solidified glue.
Optionally, the waterproof membrane assembly comprises a waterproof double-sided adhesive tape, a waterproof membrane body and a support plastic sheet which are sequentially arranged, a sound hole is formed in the support plastic sheet, and the waterproof membrane assembly is attached to the inner side of the shell at the sound hole through the waterproof double-sided adhesive tape.
Optionally, the rubber pad with the sound hole is bonded with the microphone assembly through a waterproof double-sided adhesive tape to form a combined body.
According to another aspect of the present invention, there is provided an electronic product provided with the waterproof microphone as described in any one of the above.
According to still another aspect of the present invention, there is provided a method for implementing a waterproof microphone, the method including:
providing a shell, wherein a sound inlet hole is formed in the shell, and a limiting groove is formed in the inner side of the shell;
providing a waterproof membrane assembly, and adhering the waterproof membrane assembly to the inner side of the shell at the sound inlet;
providing a rubber mat, wherein a sound hole is reserved on the rubber mat, the rubber mat and the microphone assembly are bonded to form a combined body, and the combined body is arranged in a limiting groove on the inner side of the shell;
and providing a pressure maintaining tool, extruding the assembly towards the shell side by the pressure maintaining tool to enable the rubber mat to be in sealing contact with the waterproof membrane assembly, and simultaneously dispensing and fixing the assembly in an extruding state, and removing the pressure maintaining tool after the glue is cured.
Optionally, the microphone assembly comprises a reinforcing plate, an FPC and a microphone with a sounding bottom, which are sequentially arranged, the reinforcing plate, the FPC and the microphone are adhered together by a surface mounting technology, the sounding hole of the microphone is located on one side facing the FPC, and the reinforcing plate and the FPC are provided with a sounding hole aligned with the sounding hole.
Optionally, the rubber pad with the sound hole is bonded with the microphone assembly through a waterproof double-sided adhesive tape to form a combined body.
Optionally, the pressurize frock includes shell, slider and spring, with the pressurize frock extrudees towards the casing side the assembly includes:
and the positioning groove on the shell of the pressure maintaining tool is matched with the positioning column on the shell to fix the pressure maintaining tool, the slider extrudes the combination towards the outer side of the shell, and the spring is connected with the slider and is in a compression state to provide pre-pressure.
In conclusion, the beneficial effects of the invention are as follows:
glue through the point under the pressurize state and fix cushion and the microphone subassembly that leaves the sound hole, replaced the elasticity preforming among the prior art, can obviously reduce the cost of product to for using the elasticity preforming, the fixed mode seal stability that the pressurize was glued is higher, and the dimensional requirement to spare part reduces, can reduce the design precision, reduces the processing degree of difficulty and cost.
In the preferred embodiment of the invention, the bottom sounding microphone is adopted and matched with the rubber pad in a gluing and sealing mode, compared with the mode that the top sounding microphone is directly wrapped in the rubber sleeve in the prior art, the assembly is simple, and the effect of improving the sealing stability can be achieved.
Drawings
FIG. 1 is an exploded view of a prior art waterproof microphone;
fig. 2 is an exploded view of a waterproof microphone according to an embodiment of the present invention;
fig. 3 is a structural diagram of a waterproof microphone case according to an embodiment of the present invention;
FIG. 4 is an enlarged view of a portion of the waterproof microphone housing of FIG. 3;
fig. 5 is an exploded view of a microphone assembly of a waterproof microphone according to an embodiment of the present invention;
fig. 6 is a schematic diagram illustrating an assembly process of a waterproof microphone according to an embodiment of the present invention.
Fig. 7 is an assembled view of a waterproof microphone provided with a pressure maintaining tool according to an embodiment of the present invention.
In the figure, 1, a waterproof membrane assembly; 2. a rubber sleeve; 3. a microphone assembly; 3-1. A stiffening plate; 3-2.FPC;3-3, a microphone is sounded at the bottom; 4. elastic tabletting; 5. a housing; 5-1, limiting grooves; 5-2, dispensing a glue groove; 5-3, sound inlet holes; 6. a rubber pad; 7. pressure maintaining tooling; 7-1. A shell; 7-2. A slide block.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Fig. 2-5 show an embodiment of the waterproof microphone of the present invention, and as shown in fig. 2-5, a waterproof microphone includes a housing 5, the housing 5 may be an electronic device housing installed with the waterproof microphone, the housing 5 is provided with a sound inlet 5-3 for transmitting sound, the inner side of the housing 5 at the sound inlet 5-3 is adhered with a waterproof membrane assembly 1, the inner side of the housing 5 is further provided with a limit groove 5-1, a rubber pad 6 with a sound inlet is adhered with the microphone assembly 3 to form a combined body, the combined body is installed in the limit groove 5-1 at the inner side of the housing 5 in a state of being pressed towards the housing 5, so that the rubber pad 6 is in sealing contact with the waterproof membrane assembly 1, and is fixed in the limit groove 5-1 by dispensing in a state.
According to the invention, the rubber pad 6 and the microphone assembly 3 are fixed by dispensing in an extrusion state, the applied pressure is removed after the glue is cured, the compressed rubber pad cannot rebound due to the fixing effect of the glue, the pressure required by the sealing of the whole sound collecting channel can be continuously maintained, the good sealing performance is maintained, and the cost is lower compared with the cost of an elastic pressing sheet. And moreover, the glue is used for dispensing and fixing, so that the requirement on the processing size of the part is not high, and the requirement on the processing precision is reduced.
Fig. 5 shows an explosion diagram of the microphone assembly 3, which includes a stiffening plate 3-1, an FPC (Flexible Printed Circuit) 3-2 and a bottom sounding microphone 3-3, which are sequentially disposed, and the three are adhered together by a surface mount technology, wherein a sounding hole of the bottom sounding microphone 3-3 is located on a side facing the FPC3-2, and the stiffening plate 3-1 and the FPC3-2 are provided with a sounding hole aligned with the sounding hole of the microphone.
According to the invention, the bottom sounding microphone 3-3 is adopted, so that the reinforcing plate 3-1 of the microphone assembly 3 faces the rubber mat 6, the contact area between the microphone assembly 3 and the rubber mat 6 is larger, and a large enough operation space is provided for realizing the bonding, sealing and fixing of the microphone assembly 3 and the rubber mat 6, for example, the rubber mat 6 with a sound hole is bonded with the microphone assembly 3 through a waterproof double-sided adhesive to form a combined body.
Fig. 4 shows a partial enlarged view of the housing 5, wherein a dispensing slot 5-2 is provided in a limiting slot 5-1 of the housing 5, the dispensing slot 5-2 is located on a side wall of the limiting slot 5-1 and corresponds to a position of a combination formed by the rubber pad 6 and the microphone component 3, the glue is filled in the dispensing slot 5-2 during dispensing, and a fixing structure embedded in the dispensing slot 5-2 is formed after curing, so that the bonding strength of the cured glue can be improved.
The waterproof membrane assembly 1 comprises a waterproof double-sided adhesive tape, a waterproof membrane body and a supporting plastic sheet which are sequentially arranged, a sound hole is formed in the supporting plastic sheet, the waterproof membrane assembly 1 is attached to the inner side of the shell 5 at the position of the sound hole 5-3 through the waterproof double-sided adhesive tape, and the waterproof membrane body and the supporting plastic sheet can be bonded in a gluing mode or a waterproof double-sided adhesive tape mode.
The invention also discloses an electronic product which is provided with the waterproof microphone.
The invention also discloses a method for realizing the waterproof microphone, which comprises the following steps:
step S110, a shell is provided, a sound inlet hole is formed in the shell, and a limiting groove is formed in the inner side of the shell.
Step S120, providing a waterproof membrane module, and adhering the waterproof membrane module to the inner side of the casing at the sound inlet.
Step S130, providing a rubber mat, reserving a sound hole on the rubber mat, bonding the rubber mat and the microphone assembly to form a combined body, and installing the combined body into a limiting groove on the inner side of the shell.
Step S140, providing a pressure maintaining tool, extruding the combined body towards the shell side by using the pressure maintaining tool to enable the rubber gasket to be in sealing contact with the waterproof membrane assembly, simultaneously dispensing and fixing the combined body in an extruding state, and removing the pressure maintaining tool after the glue is cured.
Through fixed cushion and microphone subassembly are glued to point under extrusion state, treat the glue solidification back, remove the pressurize frock, because the fixed action of glue, the unable bounce-back of compressed cushion can last to keep whole sound channel sealing required pressure, keeps good sealing performance, and is lower for the mode cost that uses the elasticity preforming. And moreover, the glue is used for fixation, so that the requirement on the machining size of the part is not high, and the requirement on the machining precision is reduced.
Preferably, the microphone assembly in step S130 includes a reinforcing plate, an FPC, and a microphone with a sound produced at the bottom, which are sequentially disposed, and the reinforcing plate, the FPC, and the microphone are adhered together by a surface mount technology, wherein a sound collecting hole of the microphone is located on one side facing the FPC, and sound holes aligned with the sound collecting hole are disposed on the reinforcing plate and the FPC. By adopting the structure, the contact area between the microphone assembly and the rubber pad is large, the bonding is convenient, and the bonding sealing performance is good.
Preferably, in step S130, the rubber pad with the sound hole is adhered to the microphone assembly by the waterproof double-sided adhesive tape to form a combined body. Of course, on the basis of ensuring the sealing performance, a gluing mode can be adopted, and the description is omitted.
Preferably, in step S140, the pressure maintaining tool includes a housing, a slider, and a spring, and the assembly is extruded toward the housing side by the pressure maintaining tool includes: the positioning groove on the shell of the pressure maintaining tool is matched with the positioning column on the shell to fix the pressure maintaining tool, the sliding block is used for extruding the combined body towards the outer side of the shell, the spring is connected with the sliding block, the spring in a compressed state provides pre-pressure, and the pressing and sealing of the whole assembly structure are realized.
Fig. 6 and 7 show an assembly schematic diagram of the waterproof microphone of the present invention, wherein the pressure maintaining tool 7 used in the pressure dispensing process is composed of a housing 7-1, a slider 7-2 and an internal spring (not shown), the internal spring is compressed by the forward and backward sliding of the slider 7-2 to provide a pre-pressure for the whole sound transmission path, and the pressure maintaining tool 6 is fixed on a positioning column (a positioning groove and a positioning column are not shown) of the housing 5 through a positioning slot thereon to be matched with a microphone assembly.
As shown in fig. 6, the waterproof membrane assembly 1 is firstly adhered to the shell 5, then a combined body formed by adhering the rubber mat 6 and the microphone assembly 3 is arranged in a limiting groove 5-2 of the shell 5, at this time, all the parts are not mutually extruded, then the front end of a sliding block 7-2 of the pressure maintaining tool 7 is propped against the rear part of the microphone assembly 3, a positioning groove at the rear end of the pressure maintaining tool 7 is clamped on a positioning column on the shell 5, and the pre-pressure is provided for the assembled product by extruding a spring in the pressure maintaining tool 7; after the waterproof membrane component 1 and the rubber pad 6 are compressed, dispensing is carried out in a dispensing groove 5-2 of the shell 5, after glue is solidified, the whole component is fixed on the shell 5, the pressure maintaining tool 7 is detached at the moment, the compressed rubber pad 6 cannot rebound due to the fixing effect of the glue, the pressure required by the sealing of the whole passage can be continuously maintained, and the assembly drawing of the overall structure is shown as 7.
While the foregoing is directed to embodiments of the present invention, other modifications and variations of the present invention may be devised by those skilled in the art in light of the above teachings. It should be understood by those skilled in the art that the foregoing detailed description is for the purpose of better explaining the present invention, and the scope of the present invention should be determined by the scope of the appended claims.
Claims (10)
1. A waterproof microphone comprises a shell, wherein a sound inlet is formed in the shell, and is characterized in that a waterproof membrane assembly is adhered to the inner side of the shell at the sound inlet; the inner side of the shell is also provided with a limiting groove, the rubber mat with the sound hole is bonded with the microphone assembly to form a combined body, the combined body is arranged in the limiting groove on the inner side of the shell in a state of being extruded towards the shell side, so that the rubber mat is in sealing contact with the waterproof membrane assembly and is fixed in the limiting groove through dispensing in an extrusion state, and the dispensing is used for fixing the extrusion state of the rubber mat; and after the rubber mat is fixed, removing the applied extrusion force.
2. The waterproof microphone according to claim 1, wherein the microphone assembly comprises a reinforcing plate, an FPC and a bottom sounding microphone which are sequentially arranged, the reinforcing plate, the FPC and the bottom sounding microphone are adhered together by a surface mount technology, a sounding hole of the microphone is positioned on one side facing the FPC, and the reinforcing plate and the FPC are provided with a sounding hole aligned with the sounding hole of the microphone.
3. The waterproof microphone according to claim 1, wherein a glue dispensing groove is provided in the limiting groove of the housing for improving the bonding strength of the cured glue.
4. The waterproof microphone according to claim 1, wherein the waterproof membrane assembly includes a waterproof double-sided tape, a waterproof membrane body, and a supporting plastic sheet, which are sequentially disposed, wherein the supporting plastic sheet is provided with a sound hole, and the waterproof membrane assembly is attached to an inner side of the casing at the sound hole through the waterproof double-sided tape.
5. The waterproof microphone of claim 1, wherein the rubber pad with the sound hole is adhered to the microphone assembly by a waterproof double-sided adhesive tape to form a combined body.
6. An electronic product, characterized in that the electronic product is provided with a waterproof microphone according to any of claims 1-5.
7. A method for realizing a waterproof microphone is characterized by comprising the following steps:
providing a shell, wherein a sound inlet hole is formed in the shell, and a limiting groove is formed in the inner side of the shell;
providing a waterproof membrane assembly, and sticking the waterproof membrane assembly on the inner side of the shell at the sound inlet;
providing a rubber mat, wherein a sound hole is reserved on the rubber mat, the rubber mat and the microphone assembly are bonded to form a combined body, and the combined body is arranged in a limiting groove on the inner side of the shell;
providing a pressurize frock, use pressurize frock extrudees towards the casing side the assembly makes the cushion with waterproofing membrane subassembly sealing contact glues fixedly simultaneously under the extrusion state the assembly, removes the pressurize frock after the glue solidification, the extrusion state that the point was used for fixed cushion.
8. The method for implementing a waterproof microphone according to claim 7, wherein the microphone assembly includes a stiffener, an FPC, and a bottom microphone sequentially disposed, the stiffener, the FPC, and the bottom microphone are adhered together by surface mount technology, the sound collecting hole of the microphone is located on a side facing the FPC, and the stiffener and the FPC are provided with sound holes aligned with the sound collecting hole.
9. The method of claim 7, wherein the rubber pad with the sound hole is adhered to the microphone assembly by a waterproof double-sided adhesive tape to form a combined body.
10. The method of claim 7, wherein the pressure maintaining tool comprises a housing, a slider, and a spring, and pressing the assembly toward the housing side with the pressure maintaining tool comprises:
and the positioning groove on the shell of the pressure maintaining tool is matched with the positioning column on the shell to fix the pressure maintaining tool, the sliding block is used for extruding the combination body towards the outer side of the shell, and the spring is connected with the sliding block and is in a compressed state to provide pre-pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610850885.3A CN106358102B (en) | 2016-09-26 | 2016-09-26 | Waterproof microphone, implementation method thereof and electronic product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610850885.3A CN106358102B (en) | 2016-09-26 | 2016-09-26 | Waterproof microphone, implementation method thereof and electronic product |
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| CN106358102A CN106358102A (en) | 2017-01-25 |
| CN106358102B true CN106358102B (en) | 2023-03-31 |
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| CN201610850885.3A Active CN106358102B (en) | 2016-09-26 | 2016-09-26 | Waterproof microphone, implementation method thereof and electronic product |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107465776A (en) * | 2017-07-31 | 2017-12-12 | 努比亚技术有限公司 | Waterproof and breathable component and mobile terminal |
| CN107454522B (en) * | 2017-08-07 | 2021-01-22 | 瑞声科技(新加坡)有限公司 | Sound production device |
| CN107484098B (en) * | 2017-08-07 | 2021-02-05 | 瑞声科技(新加坡)有限公司 | Sound production device and assembly method of breathable partition thereof |
| CN110439896A (en) * | 2019-09-20 | 2019-11-12 | 伟创力电子技术(苏州)有限公司 | A kind of smoke detector assembled fixture |
| CN111314831A (en) * | 2020-02-21 | 2020-06-19 | 惠州Tcl移动通信有限公司 | Microphone subassembly and mobile terminal |
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| TW200935959A (en) * | 2008-02-05 | 2009-08-16 | Fortemedia Inc | Electronic device, microphone assembly, and process for producing the same |
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