CN202841492U - Stereo microphone - Google Patents
Stereo microphone Download PDFInfo
- Publication number
- CN202841492U CN202841492U CN 201220537487 CN201220537487U CN202841492U CN 202841492 U CN202841492 U CN 202841492U CN 201220537487 CN201220537487 CN 201220537487 CN 201220537487 U CN201220537487 U CN 201220537487U CN 202841492 U CN202841492 U CN 202841492U
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- shell
- microphone
- double
- housing
- stereo
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- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Abstract
The utility model relates to a stereo microphone which comprises a hollow shell. Shell sound holes are reserved on the bottom end face and the top end face of the shell, a double-sided circuit board is transversely arranged in the middle of an inner cavity of the shell and divides the inner cavity into two independent chambers, two microphone assemblies are mounted in the two independent chambers respectively by taking two sides of the double-sided circuit board as two wiring boards respectively, the double-sided circuit board extends out of the shell and forms signal output terminals and power input terminals of the two microphone assemblies outside the shell, the shell is of an integral structure formed by a barrel with an opening at the top end and a seal cover sealed on the opening, the top end of the barrel bends towards the inner cavity of the shell to form a curved section, and the curved section is connected on the seal cover in a press manner. The two microphone assemblies are integrated to an integral structure to respectively complete sound collection of left and right channels, so that a stereo collection function is achieved. Besides, the stereo microphone is simple in integral structure, convenient for circuit connection, complete in function and low in cost, and can be conveniently mounted on a portable electronic product.
Description
Technical field
The utility model relates to the microphone field, specifically a kind of stereo microphone.
Background technology
Microphone is a kind of collected sound signal and the energy transducer that is converted into the accessible signal of telecommunication, is commonly called as words letter, microphone.The operation principle of common condenser microphone is: utilize vibrating diaphragm and backboard to form two pole plates of electric capacity, acoustic pressure drives the vibrating diaphragm vibration changes the distance between two-plate, thereby cause that electric capacity changes, and then so that change in voltage, the size of change in voltage, the power that has reflected extraneous acoustic pressure, this change in voltage frequency has namely reflected the frequency of external sound, the microphone internal circuit board is used for receiving above-mentioned voltage signal and after treatment output.
Along with the development of technology and the raising of people's quality of life, the stereo collection of high-fidelity is applied in the various electronic products gradually.But, such as mobile phone, PAD, MP4 etc. of current a lot of portable type electronic product seldom possesses stereo acquisition function arranged, its main cause is to realize that stereo collection needs at least two to overlap independently sound collection unit, for portable product, all be no small input on space and cost, a small part electronic product has been equipped with corresponding external parts and has just realized stereo collection.
Stereophone of the prior art is loquacity cylinder array format, realize that stereo collection needs to be equipped with two independently microphone units at least, has also strengthened the complexity that circuit connects when it takies large quantity space.
If can realize stereo acquisition function at portable type electronic product, will be so that the overall performance of product obtains huge lifting, but stereo collecting device of the prior art takies larger space and can strengthen the difficulty that circuit connects, and has hindered miniaturization and the microminiaturized development trend of electronic product.
The utility model content
The technical problems to be solved in the utility model provides a kind of stereo microphone, this microphone is finished respectively the sound collection of left and right acoustic channels with the two cover microphone assemblies structure that becomes one, thereby realize stereo acquisition function, and whole microphone construction is simple, circuit side connector just, function is complete, with low cost, can be installed on the portable type electronic product easily.
For solving the problems of the technologies described above, stereo microphone of the present utility model comprises the housing of hollow, its design feature is all to offer the shell sound hole on the bottom face of described housing and the top end face, the middle part of housing inner chamber is horizontally set with the double-sided PCB that is divided into two separate chamber, and two faces with above-mentioned double-sided PCB respectively are equipped with a cover microphone assembly as terminal block in two separate chamber respectively.
Described double-sided PCB stretches out housing and is provided with signal output terminal and the power input terminal of two cover microphone assemblies at its overhanging end.
Described microphone assembly comprises from the shell sound hole on the direction to double-sided PCB vibration component, insulation gasket ring, backboard, the polar ring of installing successively and is enclosed within insulation cavity ring outside the polar ring; Offer the backboard sound hole on the backboard, backboard is electrically connected with double-sided PCB by polar ring.
Described vibration component comprises shake ring and the vibrating diaphragm that connects as one.
Described housing is for by the cylindrical shell of top end opening be sealed in the integrative-structure that the capping on the cartridge openings forms, and the top of cylindrical shell is bent to form the curved arc section to the housing inner chamber, and the curved arc section is crimped in the capping.
The beneficial effects of the utility model are: two cover microphone assemblies are installed in also share a double-sided PCB in the housing as terminal block, realized the stereo collection of left and right sound channels, overall structure is simply small and exquisite, takes up room little, can be installed in easily in the portable type electronic product; The terminals of two-sided circuit board are drawn out to outside the housing separately, and the power input of the terminal block on two sides can common-battery, and circuit is simply clear and definite, and circuit side connector just; Microphone assembly adopts electret capacitor type, and signals collecting and transmission are stable, reliable, and stereophonic effect is good; The encapsulating structure of housing adopts the aduncate form in top, each parts can be compressed to be installed in the housing, so that compact conformation, packaging technology is simple.The utility model is finished respectively the sound collection of left and right acoustic channels with the two cover microphone assemblies structure that becomes one, thereby realize stereo acquisition function, and overall structure is simple, circuit side connector just, function is complete, with low cost, can be installed on the portable type electronic product easily.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail:
Fig. 1 is the structural representation of a kind of execution mode of the present utility model.
Embodiment
With reference to accompanying drawing, a kind of execution mode of stereo microphone of the present utility model comprises the housing 1 of hollow, all offers shell sound hole 10 on the bottom face of housing 1 and the top end face.Wherein, housing 1 can be the various shapes of routine, such as square, cylindricality etc., housing 1 shown in the accompanying drawing is the cylinder of hollow, preferably, housing 1 is for by the cylindrical shell 12 of top end opening be sealed in the integrative-structure that the capping 11 on the cartridge openings forms, and the capping 11 of this kind structure has consisted of the top end face of housing 1, the bottom face of cylindrical shell 12 is the bottom face of housing 1, offers shell sound hole 10 in the capping 11 He on cylindrical shell 12 bottom faces.In addition, as shown in the figure, the top of cylindrical shell 12 is bent to form curved arc section 120 to housing 1 inner chamber, and curved arc section 120 is crimped in the capping 11, and this kind version can compress each parts and be installed in the housing, so that compact conformation, encapsulation is simple.
With reference to accompanying drawing, the middle part of housing 1 inner chamber is horizontally set with the double-sided PCB 6 that is divided into two separate chamber, and two faces with above-mentioned double-sided PCB 6 respectively are equipped with a cover microphone assembly as terminal block in two separate chamber respectively.Double-sided PCB 6 stretches out housing 1 and is provided with signal output terminal and the power input terminal of two cover microphone assemblies at its overhanging end, and during concrete circuit connected, the power input of two faces can common-battery.Wherein, two separate chamber consist of left and right two operatic tunes, and the simultaneously stereo collection of collection signal formation left and right sound channels of two cover microphone assemblies with stereophonic signal output, is finished stereo acquisition function by double-sided PCB 6.Double-sided PCB 6 can adopt flexible FPC terminal block, because each parts in the housing 1 all adopt the form of compression to install, the flexible terminal block of use can be so that it has certain elastic deformation amount, so that the circuit on the circuit board connects more reliable and can simplify mounting process.
Microphone assembly can be electret microphone assembly of the prior art or MEMS microphone assembly etc., as shown in drawings, the preferred electret capcitor microphone assembly that adopts, it comprises from shell sound hole 10 vibration component, insulation gasket ring 8, backboard 4, the polar ring 5 of installing successively on the direction to double-sided PCB 6 and is enclosed within insulation cavity ring 7 outside the polar ring 5.Wherein, offer backboard sound hole 40 on the backboard 4, backboard 4 is electrically connected with double-sided PCB 6 by polar ring 5.Vibration component adopts the form of shake ring 2 and the vibrating diaphragm 3 that connect as one.Vibrating diaphragm 3 consists of a pole plate of electret capacitor, and it is connected with double-sided PCB 6 by housing, and backboard 4 is another pole plate of electret capacitor, and it is connected with double-sided PCB 6 by polar ring 5, and insulation gasket ring 8 pads are between vibrating diaphragm 3 and backboard 4.The effect of insulation cavity ring 7 is the insulation that keep backboard 4 and polar ring 5 and housing 1 inwall, avoids the two-plate short circuit of electret capacitor.
In sum, the utility model is not limited to above-mentioned embodiment.Those skilled in the art under the prerequisite that does not break away from spirit and scope of the present utility model, can do some changes and modification.Protection range of the present utility model should be as the criterion with claim of the present utility model.
Claims (5)
1. stereo microphone, the housing (1) that comprises hollow, it is characterized in that all offering shell sound hole (10) on the bottom face of described housing (1) and the top end face, the middle part of housing (1) inner chamber is horizontally set with the double-sided PCB (6) that is divided into two separate chamber, and two faces with above-mentioned double-sided PCB (6) respectively are equipped with a cover microphone assembly as terminal block in two separate chamber respectively.
2. stereo microphone as claimed in claim 1 is characterized in that described double-sided PCB (6) stretches out housing (1) and is provided with signal output terminal and the power input terminal of two cover microphone assemblies at its overhanging end.
3. stereo microphone as claimed in claim 1 or 2 is characterized in that described microphone assembly comprises vibration component, insulation gasket ring (8), backboard (4), the polar ring (5) of installing successively from shell sound hole (10) and is enclosed within insulation cavity ring (7) outside the polar ring (5) to the direction of double-sided PCB (6); Offer backboard sound hole (40) on the backboard (4), backboard (4) is electrically connected with double-sided PCB (6) by polar ring (5).
4. stereo microphone as claimed in claim 3 is characterized in that described vibration component comprises shake ring (2) and the vibrating diaphragm (3) that connects as one.
5. such as claim 1 or 2 or 4 described stereo microphones, it is characterized in that described housing (1) is for by the cylindrical shell (12) of top end opening be sealed in the integrative-structure that the capping (11) on the cartridge openings forms, the top of cylindrical shell (12) is bent to form curved arc section (120) to housing (1) inner chamber, and curved arc section (120) is crimped in the capping (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220537487 CN202841492U (en) | 2012-10-20 | 2012-10-20 | Stereo microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220537487 CN202841492U (en) | 2012-10-20 | 2012-10-20 | Stereo microphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202841492U true CN202841492U (en) | 2013-03-27 |
Family
ID=47953079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220537487 Expired - Lifetime CN202841492U (en) | 2012-10-20 | 2012-10-20 | Stereo microphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202841492U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106612485A (en) * | 2015-10-23 | 2017-05-03 | 钰太芯微电子科技（上海）有限公司 | MEMS microphone and sound receiving device |
-
2012
- 2012-10-20 CN CN 201220537487 patent/CN202841492U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106612485A (en) * | 2015-10-23 | 2017-05-03 | 钰太芯微电子科技（上海）有限公司 | MEMS microphone and sound receiving device |
| CN106612485B (en) * | 2015-10-23 | 2024-03-29 | 钰太芯微电子科技（上海）有限公司 | MEMS microphone and radio device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |
|
| CX01 | Expiry of patent term |