CN219678679U - Digital microphone with waterproof function - Google Patents
Digital microphone with waterproof function Download PDFInfo
- Publication number
- CN219678679U CN219678679U CN202223540393.4U CN202223540393U CN219678679U CN 219678679 U CN219678679 U CN 219678679U CN 202223540393 U CN202223540393 U CN 202223540393U CN 219678679 U CN219678679 U CN 219678679U
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- China
- Prior art keywords
- rubber sleeve
- microphone
- sound receiving
- waterproof
- receiving hole
- Prior art date
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- 238000007789 sealing Methods 0.000 claims abstract description 30
- 238000009434 installation Methods 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000000903 blocking effect Effects 0.000 claims abstract description 4
- 239000003292 glue Substances 0.000 claims description 12
- 238000005476 soldering Methods 0.000 claims description 6
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 239000000741 silica gel Substances 0.000 claims description 5
- 229910002027 silica gel Inorganic materials 0.000 claims description 5
- 239000011247 coating layer Substances 0.000 abstract 1
- 239000010410 layer Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 7
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Landscapes
- Telephone Set Structure (AREA)
Abstract
The utility model relates to a digital microphone with waterproof function, comprising: the microphone comprises a shell, a microphone, a PCB, a rubber sleeve and a waterproof covering layer for blocking water and passing sound, wherein an installation space is arranged in the shell, and a wall body at the top of the shell is provided with a first sound receiving hole; the PCB board is connected in the installation space; the rubber sleeve is arranged in the mounting space, the rubber sleeve is connected above the PCB, a mounting hole is formed in the bottom of the rubber sleeve, and a second radio hole communicated with the mounting hole is formed in the top of the rubber sleeve; the rubber sleeve is provided with a sealing part protruding out of the upper surface of the rubber sleeve, and the sealing part is arranged around the second sound receiving hole for one circle; the waterproof coating layer is arranged between the shell and the rubber sleeve and covers the bottom end of the first sound receiving hole and the top end of the second sound receiving hole; the microphone is arranged in the mounting hole, the microphone is fixedly connected with the PCB, and the upper surface and the side surface of the microphone are attached to the rubber sleeve; the first sound receiving hole is communicated with the second sound receiving hole. The utility model has better waterproof function.
Description
Technical Field
The utility model relates to the technical field of microphone manufacturing, in particular to a digital microphone with a waterproof function.
Background
The application of microphones in the market is increasing, and common rewarding microphones are applied to mobile phones, outdoor monitoring, smart watches and smart bracelets. Along with the improvement of life quality, people have increasingly higher waterproof requirements for electronic products. However, the traditional capacitive electret microphone or patch type silicon microphone cannot meet the waterproof requirement of customers. Moreover, most of microphones of mobile phones, outdoor monitoring, intelligent watches and intelligent bracelets are mainly filled with water from the sound receiving holes, and the traditional microphones have no waterproof structure at the sound receiving holes, so that the problem of low waterproof performance is caused.
Disclosure of Invention
Therefore, the utility model aims to solve the technical problem that the waterproof performance is low because the traditional microphone in the prior art has no waterproof structure at the sound receiving hole.
In order to solve the above technical problems, the present utility model provides a digital microphone with waterproof function, comprising:
the shell is internally provided with an installation space, and a wall body at the top of the shell is provided with a first sound receiving hole;
a microphone;
the PCB is connected in the installation space;
the rubber sleeve is arranged in the mounting space, the rubber sleeve is connected above the PCB, the bottom of the rubber sleeve is provided with a mounting hole, and the top of the rubber sleeve is provided with a second radio hole communicated with the mounting hole; the rubber sleeve is provided with a sealing part protruding out of the upper surface of the rubber sleeve, and the sealing part is arranged around the second sound receiving hole for one circle;
the waterproof covering layer is used for blocking water and passing through sound, is arranged between the shell and the rubber sleeve and covers the bottom end of the first sound receiving hole and the top end of the second sound receiving hole;
the microphone is arranged in the mounting hole, the lower surface of the microphone is fixedly connected with the PCB, and the upper surface and the side surface of the microphone are attached to the rubber sleeve; the first sound receiving hole is communicated with the second sound receiving hole, and the second sound receiving hole is positioned above the sound receiving opening of the microphone.
In one embodiment of the utility model, the upper surface of the sealing portion is planar and the sides of the sealing portion are arcuate.
In one embodiment of the utility model, the bottom of the rubber sleeve is provided with a positioning column protruding from the lower surface of the rubber sleeve;
and a locating hole corresponding to the locating column is arranged in the PCB, and the locating column is clamped in the locating hole.
In one embodiment of the utility model, a gap is provided between the inner side wall of the seal and the side wall of the waterproof coating.
In one embodiment of the present utility model, the first sound receiving hole and the second sound receiving hole are both circular.
In one embodiment of the utility model, the diameter of the first sound receiving aperture is smaller than the diameter of the second sound receiving aperture.
In one embodiment of the utility model, the waterproof cover layer is adhered and fixed with the upper surface of the rubber sleeve through waterproof glue.
In one embodiment of the utility model, the lower surface of the rubber sleeve is bonded and fixed with the upper surface of the PCB through waterproof glue.
In one embodiment of the utility model, the waterproof cover layer is adhered and fixed with the upper surface of the rubber sleeve through waterproof glue; the lower surface of the rubber sleeve is adhered and fixed with the upper surface of the PCB board through waterproof glue.
In one embodiment of the utility model, the gum cover is made of silica gel.
In one embodiment of the utility model, the housing is connected to the PCB board by screw fastening.
In one embodiment of the utility model, the microphone is soldered to the PCB board by reflow soldering.
Compared with the prior art, the technical scheme of the utility model has the following advantages:
according to the digital microphone with the waterproof function, the rubber sleeve is arranged in the shell, the microphone is wrapped by the rubber sleeve, the waterproof covering layer is arranged at the first sound receiving hole and the second sound receiving hole between the shell and the rubber sleeve, the waterproof covering layer can pass through sound but water molecules cannot pass through, the sealing part is arranged at the position where the top of the rubber sleeve is contacted with the shell, and the sealing part is arranged around the waterproof covering layer, so that the waterproof microphone has the waterproof function through close fit of the rubber sleeve, the sealing part and the shell and the arrangement of the waterproof covering layer.
Drawings
In order that the utility model may be more readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof that are illustrated in the appended drawings, in which
Fig. 1 is a schematic structural diagram of a digital microphone with waterproof function according to the present utility model.
Description of the specification reference numerals: 100. a housing; 110. a first sound receiving hole;
200. a microphone;
300. a PCB board;
400. a rubber sleeve; 410. a second sound receiving hole; 420. a sealing part; 430. positioning columns;
500. a waterproof cover layer; 510. a gap.
Detailed Description
The present utility model will be further described with reference to the accompanying drawings and specific examples, which are not intended to be limiting, so that those skilled in the art will better understand the utility model and practice it.
Referring to fig. 1, the present utility model provides a digital microphone 200 having a waterproof function, comprising:
the shell 100, there is installation space in the shell 100, there is the first that receives the sound hole 110 on the wall body of the top of the shell 100;
microphone 200, microphone 200 is a digital microphone 200;
the PCB 300, the PCB 300 is connected in the installation space;
the rubber sleeve 400 is arranged in the installation space, the rubber sleeve 400 is connected above the PCB 300, the bottom of the rubber sleeve 400 is provided with an installation hole, and the top of the rubber sleeve 400 is provided with a second radio hole 410 communicated with the installation hole; the rubber sleeve 400 is provided with a sealing part 420 protruding from the upper surface of the rubber sleeve, and the sealing part 420 is arranged around the second receiving hole 410 in a circle;
a waterproof cover layer 500 for blocking water and passing sound, the waterproof cover layer 500 being disposed between the case 100 and the rubber cover 400, and the waterproof cover layer 500 covering the bottom end of the first sound receiving hole 110 and the top end of the second sound receiving hole 410;
the microphone 200 is installed in the installation hole, the lower surface of the microphone 200 is fixedly connected with the PCB 300, and the upper surface and the side surface of the microphone 200 are attached to the rubber sleeve 400; the first sound receiving hole 110 is communicated with the second sound receiving hole 410, and the second sound receiving hole 410 is located above the sound receiving opening of the microphone 200.
The waterproof coating 500 is made of compact waterproof cloth, and the waterproof cloth can pass through sound, but water molecules cannot pass through, so that a waterproof effect is achieved.
It should be noted that, the rubber sleeve 400 of the present utility model is tightly matched with the housing 100 by interference fit, so that water and sound can pass through the first sound receiving hole 110 of the housing 100 and then reach the waterproof cover 500. The waterproof cover layer 500 can pass sound but not water, so that the sound passes through the second sound receiving hole 410 to reach the sound receiving hole of the microphone 200 single body, and thus reach the vibration film of the microphone 200, and due to the interference tight fit of the rubber sleeve 400 and the shell 100 and the interference tight fit of the rubber sleeve 400 and the microphone 200, and the arrangement of the sealing part 420 and the waterproof cover layer 500, the waterproof effect can be achieved.
Specifically, the present utility model provides the rubber cover 400 in the case 100, the rubber cover 400 wraps the microphone 200, in addition, the waterproof cover 500 is provided at the first and second sound receiving holes 110 and 410 between the case 100 and the rubber cover 400, the waterproof cover 500 is capable of passing sound but water molecules cannot pass, and secondly, the sealing part 420 is provided at a position where the top of the rubber cover 400 contacts the case 100, and the sealing part 420 is provided around the waterproof cover 500 in a circle, thereby, it is seen that the present utility model plays a waterproof role through the tight fitting of the rubber cover 400, the sealing part 420, and the case 100 and the provision of the waterproof cover 500.
Further, the upper surface of the sealing part 420 is a plane, and the side surface of the sealing part 420 is an arc.
Specifically, the upper surface of the sealing part 420 is a plane, so that the contact area of the housing 100 and the sealing part 420 is increased, thereby improving the sealing effect of the sealing part 420.
Further, the bottom of the rubber sleeve 400 is provided with a positioning column 430 protruding from the lower surface thereof;
the PCB 300 is provided with a positioning hole corresponding to the positioning post 430, and the positioning post 430 is clamped in the positioning hole.
Specifically, the positioning column 430 is provided in this embodiment, so that positioning is facilitated when the rubber sleeve 400 is assembled with the housing 100, and assembly efficiency is improved.
Further, a gap 510 is provided between the inner side wall of the sealing part 420 and the side wall of the waterproof cover layer 500. The width of the gap 510 is 0.4mm. For example, the waterproof cover 500 has a circular structure, and the diameter of the waterproof cover 500 is 0.4mm smaller than the diameter of the inner ring of the sealing part 420.
Specifically, the gap 510 is provided to allow space for compression deformation of the sealing portion 420 on the one hand and for assembly on the other hand, so as to avoid poor assembly.
Further, the first sound receiving hole 110 and the second sound receiving hole 410 are both circular.
Specifically, the round sound receiving holes are convenient for improving the sound receiving effect.
Further, the diameter of the first sound receiving hole 110 is smaller than the diameter of the second sound receiving hole 410.
Specifically, the diameter of the first sound receiving hole 110 is smaller than that of the second sound receiving hole 410, which is more convenient for improving the sound receiving effect.
Further, the waterproof cover layer 500 is adhered and fixed to the upper surface of the rubber sleeve 400 by waterproof adhesive, for example, waterproof adhesive is used, the thickness of the waterproof adhesive is 0.15mm, and the outer diameter of the waterproof cover layer 500 is identical to the outer diameter of the waterproof adhesive. The inner diameter of the waterproof adhesive-backed is greater than the inner diameter of the second receiving hole 410, for example, greater than 0.4mm.
The lower surface of the glue cover 400 is adhered and fixed to the upper surface of the PCB 300 by waterproof glue, for example, waterproof back glue is used.
The contact surface of the rubber sleeve 400 and the waterproof glue is brushed with the silica gel treating agent, after the viscosity of the corroded surface of the treating machine is increased, the waterproof glue is attached by using the jig, and the pressure is maintained for more than 10 seconds by using the jig, so that the waterproof effect is achieved.
Specifically, the waterproof back glue is adopted for fixing, so that quick connection is realized and waterproof effect can be achieved.
Further, the rubber sleeve 400 is made of silica gel, and the hardness of the rubber sleeve 400 is 20-80 degrees.
Specifically, the rubber sleeve 400 made of silica gel has elasticity and is low in cost.
Further, the case 100 is fastened to the PCB 300 by screws.
Specifically, the casing 100 is detachably and fixedly connected with the PCB 300 by screwing, so that the quick assembly and disassembly are facilitated.
Further, the microphone 200 is soldered to the PCB 300 by reflow soldering, and the solder dot thickness of the reflow soldering is 0.07mm. The waterproof overlay 500 is rated IP67. A waterproof cover 500 may also be provided between the gum cover 400 and the microphone 200.
Specifically, a reflow soldering process is adopted to ensure the soldering quality.
The rubber sleeve 400 is tightly matched with the microphone 200 in the horizontal direction (interference fit), and the size of the interference fit between the periphery of the rubber sleeve 400 and the microphone 200, which is recommended to be tightly matched or single-side dry, is 0.05mm.
The outer shell 100 is fixedly connected with the rubber sleeve 400 in a close fit manner in the horizontal direction.
In some embodiments, the size of the interference fit of the gum cover 400 with the housing 100 is 0.2-0.3 mm, and the size of the interference fit of the gum cover 400 with the microphone 200 is 0-0.05 mm.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations and modifications of the present utility model will be apparent to those of ordinary skill in the art in light of the foregoing description. It is not necessary here nor is it exhaustive of all embodiments. And obvious variations or modifications thereof are contemplated as falling within the scope of the present utility model.
Claims (10)
1. A digital microphone with waterproof function, characterized in that: comprising the following steps:
the shell is internally provided with an installation space, and a wall body at the top of the shell is provided with a first sound receiving hole;
a microphone;
the PCB is connected in the installation space;
the rubber sleeve is arranged in the installation space, the rubber sleeve is connected above the PCB, an installation hole is formed in the bottom of the rubber sleeve, and a second radio hole communicated with the installation hole is formed in the top of the rubber sleeve; the rubber sleeve is provided with a sealing part protruding out of the upper surface of the rubber sleeve, and the sealing part is arranged around the second sound receiving hole for one circle;
the waterproof covering layer is used for blocking water and passing through sound and is arranged between the shell and the rubber sleeve, and covers the bottom end of the first sound receiving hole and the top end of the second sound receiving hole;
the microphone is arranged in the mounting hole, the lower surface of the microphone is fixedly connected with the PCB, and the upper surface and the side surface of the microphone are attached to the rubber sleeve; the first sound receiving hole is communicated with the second sound receiving hole, and the second sound receiving hole is positioned above a sound receiving opening of the microphone.
2. The digital microphone with waterproof function according to claim 1, wherein: the upper surface of the sealing part is a plane, and the side surface of the sealing part is arc-shaped.
3. The digital microphone with waterproof function according to claim 1 or 2, characterized in that: the bottom of the rubber sleeve is provided with a positioning column protruding out of the lower surface of the rubber sleeve;
and the PCB is provided with a positioning hole corresponding to the positioning column, and the positioning column is clamped in the positioning hole.
4. A digital microphone with waterproof function according to claim 3, characterized in that: and a gap is reserved between the inner side wall of the sealing part and the side wall of the waterproof covering layer.
5. The digital microphone with waterproof function according to claim 1, wherein: the first sound receiving holes and the second sound receiving holes are all round.
6. The digital microphone with waterproof function according to claim 5, wherein: the diameter of the first sound receiving hole is smaller than that of the second sound receiving hole.
7. The digital microphone with waterproof function according to claim 1, wherein: the waterproof covering layer is adhered and fixed with the upper surface of the rubber sleeve through waterproof glue; and/or the number of the groups of groups,
the lower surface of the rubber sleeve is bonded and fixed with the upper surface of the PCB through waterproof glue.
8. The digital microphone with waterproof function according to claim 1, wherein: the rubber sleeve is made of silica gel.
9. The digital microphone with waterproof function according to claim 1, wherein: the shell is fixedly connected with the PCB board through screws.
10. The digital microphone with waterproof function according to claim 1, wherein: the microphone is soldered on the PCB by reflow soldering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223540393.4U CN219678679U (en) | 2022-12-29 | 2022-12-29 | Digital microphone with waterproof function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223540393.4U CN219678679U (en) | 2022-12-29 | 2022-12-29 | Digital microphone with waterproof function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219678679U true CN219678679U (en) | 2023-09-12 |
Family
ID=87922156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223540393.4U Active CN219678679U (en) | 2022-12-29 | 2022-12-29 | Digital microphone with waterproof function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219678679U (en) |
-
2022
- 2022-12-29 CN CN202223540393.4U patent/CN219678679U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |