CN203775369U - Small microphone with waterproof structure - Google Patents
Small microphone with waterproof structure Download PDFInfo
- Publication number
- CN203775369U CN203775369U CN201420125484.8U CN201420125484U CN203775369U CN 203775369 U CN203775369 U CN 203775369U CN 201420125484 U CN201420125484 U CN 201420125484U CN 203775369 U CN203775369 U CN 203775369U
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- China
- Prior art keywords
- microphone
- substrate
- housing
- small
- board layer
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- Expired - Fee Related
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Abstract
The utility model relates to a small microphone with a waterproof structure. The microphone comprises a housing, a substrate, circuit elements, and a microphone chip. The microphone chip is disposed on the inner surface of the substrate. The inner side wall of the housing is provided with a circuit board layer. The inner surface of the circuit board layer is provided with the circuit elements. The microphone is provided with sound transmitting holes. The upper surface of the circuit board layer and the upper surface of the substrate are provided with a waterproof layer. The outer surface of the housing and the outer surface of the substrate are provided with a second waterproof layer.
Description
Technical field
The utility model belongs to microphone field, specifically refers to a kind of miniaturization microphone with waterproof construction.
Background technology
The MEMS microphone that now utilizes MEMS (micro electro mechanical systems) technology to manufacture, its basic structure is to form encapsulation by substrate and housing, at the upper surface of substrate, microphone chip and circuit element are set, and on housing, are provided with the sound hole of transmitting sound.Or at the upper surface of substrate, microphone chip and circuit element are set, on the just right substrate of the lower surface of microphone chip, offer sound hole; Or be laterally arranged side by side microphone chip and circuit element at the upper surface of substrate, on the substrate outside the position of leaving microphone chip, offer sound hole.
In prior art scheme, be all that microphone chip and circuit element are laterally arranged side by side in the upper surface of substrate and the lower surface of housing, be difficult to, by microphone miniaturization, can not adapt to the miniaturization issues in electronic equipment, particularly portable equipment.
In order to overcome the problem of microphone miniaturization, existing had technology to propose, and by three-dimensional to microphone chip and circuit element layout, is arranged at respectively the structure of the upper and lower surface of circuit substrate by microphone chip and circuit element.And now actual production and use of the technological improvement of this class.Such technical scheme is accompanied by the sheet of electronic component, by the microphone construction size reduction of existing use many, but the ultrathin of such structure and existing electronic product still or some weak point, but now the difficulty of the miniaturization again of microphone is very large.
On the other hand, microphone case and substrate can produce in junction certain gap in the time being connected and fixed, and extraneous moisture can enter into by sound hole and gap the inside of microphone package, affects the useful life of microphone.
Utility model content
The purpose of this utility model is that by the technical program, the miniaturization again that can realize microphone has water resistance simultaneously, and can ensure the performance of microphone by existing mike technique is proposed to improve technical scheme.
The utility model is achieved through the following technical solutions:
A small-sized microphone with waterproof construction, includes housing, substrate, circuit element and microphone chip; Described housing is the shell body of a depressed part structure and substrate mix proportion microphone; Described microphone chip is arranged at substrate inner surface; The madial wall of described housing is provided with board layer, and described board layer inner surface is provided with circuit element; Described board layer is electrically connected by wire with microphone chip and external circuit; On described microphone, be provided with sound transmission aperture; The upper surface of described board layer and substrate layer is provided with one deck watertight composition; The outer surface of described housing and substrate is provided with the second watertight composition.
Sound hole is set on described microphone chip.
Sound transmission aperture on described microphone is arranged on housing or on substrate.
Described the second watertight composition that is positioned at sound transmission aperture place is waterproof and breathable membrane structure.
Described sound transmission aperture and sound hole just to or not relative.
Described housing is box-shaped or cylindrical structural, and described substrate matches with the opening shape of housing.
The beneficial effects of the utility model are:
By the technical program, thoroughly improve the technology that circuit element and microphone chip is arranged to two faces of substrate, circuit element is arranged to the sidewall of the housing of microphone.The technical program has reduced thickness for holding circuit element and substrate not to be needed blocked uply, and the thickness of whole like this microphone reduces a lot, substantially can be adapted to the ultrathin needs of electronic product.The technical program is passed through after water-proofing treatment simultaneously, the use field that can improve microphone.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1.
Embodiment
Describe by the following examples the technical solution of the utility model in detail, following embodiment is only exemplary, only can be used for explaining and explanation the technical solution of the utility model, and can not to be interpreted as is the restriction to technical solutions of the utility model.
In the technical solution of the utility model, the contour structures of microphone does not require protection in this application, because microphone need to need to carry out the change of shape according to using, but does not affect the realization of the application's technical scheme.
As depicted in figs. 1 and 2, a kind of small-sized microphone with waterproof construction, includes housing 1, substrate 2, circuit element 6 and microphone chip 5; Described housing 1 is the shell body of a depressed part structure and substrate mix proportion microphone; Described microphone chip 5 is arranged at substrate 2 inner surfaces; The madial wall of described housing 1 is provided with board layer 7, and described board layer 7 inner surfaces are provided with circuit element 6; Described board layer 7 is connected by wire 8 with microphone chip 5 and external circuit; On described microphone, be provided with sound transmission aperture 3; The upper surface that described board layer 7 and substrate are 2 layers is provided with one deck watertight composition 9, and ground floor watertight composition is heat radiation marine glue; The outer surface of described housing 1 and substrate 2 is provided with the second watertight composition 10; The second watertight composition 10 is waterproof and breathable membrane structure 11 at sound transmission aperture 3 places.
Sound hole 4 is set on described microphone chip 5.
Sound transmission aperture on described microphone is arranged on housing or on substrate.
Described sound transmission aperture and sound hole just to or not relative.
In this application, described housing is box-shaped or cylindrical structural, and described substrate matches with the opening shape of housing.The profile of housing can also be carried out the change of various shapes as required.
In this application, the thickness of substrate is corresponding reducing also, because in this application, do not need to have the substrate of multilayer circuit board, on substrate, as long as meet, microphone chip and corresponding binding post is set.
In the application's technical scheme, housing with on substrate, be provided with conductive layer and coordinates formation electromagnetic shielding.Described board layer is arranged on the inner surface of the sidewall of housing, and described board layer can be one or the Split type structure identical with the shape of housing.
Inner surface in this application and outer surface are relative concept, and taking the outer surface of shell body as outer surface, opposite side is inner surface; The surface that board layer contacts with the inner surface of shell body is outer surface, and the surface of opposite side is inner surface.
Although illustrated and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that in the situation that not departing from principle of the present utility model and spirit and can carry out multiple variation, amendment, replacement and modification to these embodiment, scope of the present utility model is by claims and be equal to and limit.
Claims (6)
1. a small-sized microphone with waterproof construction, is characterized in that: include housing, substrate, circuit element and microphone chip; Described housing is the shell body of a depressed part structure and substrate mix proportion microphone; Described microphone chip is arranged at substrate inner surface; The madial wall of described housing is provided with board layer, and described board layer inner surface is provided with circuit element; Described board layer is connected by wire with microphone chip and external circuit; On described microphone, be provided with sound transmission aperture; The upper surface of described board layer and substrate layer is provided with one deck watertight composition; The outer surface of described housing and substrate is provided with the second watertight composition.
2. the small-sized microphone with waterproof construction according to claim 1, is characterized in that: sound hole is set on described microphone chip.
3. the small-sized microphone with waterproof construction according to claim 1, is characterized in that: the sound transmission aperture on described microphone is arranged on housing or on substrate.
4. the small-sized microphone with waterproof construction according to claim 1, is characterized in that: described in be positioned at sound transmission aperture place the second watertight composition be waterproof and breathable membrane structure.
5. the small-sized microphone with waterproof construction according to claim 2, is characterized in that: described sound transmission aperture and sound hole just to or not relative.
6. the small-sized microphone with waterproof construction according to claim 1, is characterized in that: described housing is box-shaped or cylindrical structural, described substrate matches with the opening shape of housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420125484.8U CN203775369U (en) | 2014-03-19 | 2014-03-19 | Small microphone with waterproof structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420125484.8U CN203775369U (en) | 2014-03-19 | 2014-03-19 | Small microphone with waterproof structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203775369U true CN203775369U (en) | 2014-08-13 |
Family
ID=51292510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420125484.8U Expired - Fee Related CN203775369U (en) | 2014-03-19 | 2014-03-19 | Small microphone with waterproof structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203775369U (en) |
-
2014
- 2014-03-19 CN CN201420125484.8U patent/CN203775369U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140813 Termination date: 20160319 |