CN105848053A - Microphone - Google Patents
Microphone Download PDFInfo
- Publication number
- CN105848053A CN105848053A CN201610093215.1A CN201610093215A CN105848053A CN 105848053 A CN105848053 A CN 105848053A CN 201610093215 A CN201610093215 A CN 201610093215A CN 105848053 A CN105848053 A CN 105848053A
- Authority
- CN
- China
- Prior art keywords
- acoustic aperture
- microphone
- pole plate
- ring portion
- face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
Abstract
The invention provides a microphone, and belongs to the technical field of the microphone. The microphone comprises an enclosure, epoxy substrate underlay, a backplate, a diaphragm and a circuit board which are sequentially arranged. First sound holes are arranged in the middle part of the enclosure. Multiple second sound holes are arranged in the middle part of the backplate. Third sound holes matching with the second sound holes are arranged in the middle part of the epoxy substrate underlay. The third sound holes and the second sound holes are arranged in a stagger mode. The microphone has the advantages of reasonable design and reliable work.
Description
Technical field
The invention belongs to mike technique field, relate to a kind of microphone.
Background technology
Microphone is the energy conversion device that acoustical signal is converted to the signal of telecommunication, and it is main
Apply in the electronic equipments such as mobile phone, landline telephone, computer, TV, and electric capacity is transaudient
Device is one more typically in microphone field, and it need not polarizing voltage, and due to
Its electroacoustic property is good, so the most gradually taking in sound recording, public address and outdoor noise measurement
Microphone for additional polarizing voltage.
Condenser microphone in the market is broadly divided into front pole formula and back-polar type two kinds, by
During using, there is plurality of advantages, because of pole formula before this in front pole formula microphone producing
Microphone being more widely applied in life.
In prior art, front pole formula microphone construction is as it is shown in figure 1, it includes setting successively
The shell 10 put, metallic gasket 20, back pole plate 30, vibrating diaphragm 40, wiring board combination 50,
For ensureing the transaudient effect of microphone, shell 10 and back pole plate 30 are all offered sound
Hole.In actual production operation, microphone also needs to carry out moisture-resistant test and salt spray test,
To ensure the reliability of finished product work, and the microphone design of said structure is unreasonable,
The pad arranged between shell 10 and back pole plate 30 is metallic gasket 20, and its heat conduction is rapid
And structure is arranged ringwise, cause the salt fog in the external world, the material such as water smoke can be easier to into
Enter that microphone is internal and the structure such as etching lines plate, reduce the thermal insulation of microphone and resistance to
Corrosivity, also reduces the percent of pass of test.
In sum, for solving the deficiency on existing microphone construction, need design one
Reasonable in design, the microphone of reliable operation.
Summary of the invention
It is an object of the invention to there are the problems referred to above for existing technology, it is proposed that a kind of
Reasonable in design, the microphone of reliable operation.
The purpose of the present invention can be realized by following technical proposal: a kind of microphone, bag
Include set gradually shell, epoxy substrate pad, back pole plate, vibrating diaphragm, wiring board combination,
Offer the first acoustic aperture in the middle part of described shell, in the middle part of described back pole plate, offer multiple second
Acoustic aperture, offers, in the middle part of described epoxy substrate pad, the 3rd sound matched with the second acoustic aperture
Hole, described 3rd acoustic aperture shifts to install with each second acoustic aperture respectively.
As a further improvement on the present invention, described first acoustic aperture and the 3rd acoustic aperture are respectively provided with
For multiple, described 3rd acoustic aperture shifts to install with each first acoustic aperture, each second acoustic aperture respectively.
As a further improvement on the present invention, described epoxy substrate pad is divided into from outside to inside
The annular outer ring portion of integral type setting and disc inner ring portion, the end face in described outer ring portion is slightly
Higher than inner ring portion corresponding end face or with the corresponding end face in inner ring portion, described 3rd sound
Hole is opened in inner ring portion.
As the further improvement of the present invention, described outer ring portion is axially equipped with for
At least one plated through-hole of UNICOM's outer ring portion both ends of the surface, described outer ring portion's both ends of the surface and
Plated through-hole medial surface is the most uniformly coated with metal level.
As the further improvement of the present invention, described outer ring portion is radially equipped with at least
One ventilating groove, described ventilating groove extends through metal level.
As the present invention another improve, two end faces of described metal level respectively with the back of the body
Pole plate correspondence end face, shell medial surface are close to arrange.
Another as the present invention is improved, and described shell has opening, described first sound
Hole is opened in shell away from the end face of opening, and is closely fitted with dust-proof on this end face
Cloth.
Another as the present invention is improved, and is provided with insulation between vibrating diaphragm and back pole plate
The upper surface of pad and insulation spacer fits tightly with the corresponding end face of back pole plate, described ring
Outside the combination of oxygen substrate pad, back pole plate, insulation spacer, vibrating diaphragm, wiring board is installed in
In shell, between wiring board combination and insulation spacer, it is additionally provided with dead ring, described vibrating diaphragm
It is embedded in interior and vibrating diaphragm, dead ring the upper and lower end face of dead ring to flush respectively, and the two
Simultaneously lower surface with insulation spacer, upper surface fits tightly, the lower surface of the two simultaneously with
Wiring board combination is closely coupled.
Another as the present invention is improved, and offers the most uniform in the middle part of described shell
Six the first acoustic aperture of distribution, offer five the second acoustic aperture in the middle part of described back pole plate, its
In second acoustic aperture be arranged on back pole plate center and four rising tone orifice rings of residue around
Second acoustic aperture at center is uniformly distributed, and offers center even in the middle part of described epoxy substrate pad
Line is foursquare four the 3rd acoustic aperture, described 3rd acoustic aperture respectively with each first acoustic aperture,
Each second acoustic aperture shifts to install.
Based on technique scheme, the embodiment of the present invention at least can produce following technology effect
Really: overall construction design is reasonable, epoxy substrate pad is used to replace between shell and back pole plate
Changing existing metallic gasket, epoxy substrate pad is difficult to heat conduction, improve microphone every
Hot property；In the middle part of epoxy substrate pad solid and offer and on back pole plate acoustic aperture dislocation
The 3rd acoustic aperture arranged, transaudient satisfactory for result；Each acoustic aperture coordinates closely and at axial direction
Upper and underlapped, when carrying out salt spray test and moisture-resistant test, the material such as water smoke be difficult to into
Enter bottom microphone, and then the structure such as protection circuit plate is not corroded, and examination is greatly improved
The percent of pass tested, improves decay resistance and the temperature sensitivity of microphone, microphone
Reliable operation, service life is long.
Accompanying drawing explanation
Detailed description of the invention to the present invention makees further details of theory below in conjunction with the accompanying drawings
Bright, wherein:
Fig. 1 is the structural representation of microphone in prior art.
Fig. 2 is the structural representation of a preferred embodiment of the present invention.
Fig. 3 is the sectional view of a preferred embodiment of the present invention.
Fig. 4 is the sectional view of a preferred embodiment of the present invention epoxy group plate pad.
Fig. 5 is the section view at another visual angle of a preferred embodiment of the present invention epoxy group plate pad
Figure.
Fig. 6 is the structure for amplifying schematic diagram in Fig. 5 at A.
In figure, 10, shell；11, the first acoustic aperture；20, metallic gasket；30, backplane
Plate；31, the second acoustic aperture；40, vibrating diaphragm；50, wiring board combination；60, epoxy substrate
Pad；61, the 3rd acoustic aperture；62, inner ring portion；63, outer ring portion；64, plated through-hole；
65, metal level；66, ventilating groove；70, dustcloth；80, insulation spacer；90, exhausted
Edge ring.
Detailed description of the invention
The following is the specific embodiment of the present invention and combine accompanying drawing, the technical side to the present invention
Case is further described, but the present invention is not limited to these embodiments.
The present invention protects a kind of microphone, particularly a kind of front pole capacitance microphone.
Front pole of the prior art formula microphone construction design is unreasonable, at shell and backplane
Being provided with metallic gasket between plate, its heat conduction rapidly and ringwise structure is arranged, outside causing
The materials such as the salt fog on boundary, water smoke can be easier to enter the internal also etching lines plate of microphone
Etc. structure, reduce thermal insulation and the corrosion resistance of microphone, also reduce the logical of test
Cross rate.Therefore, it is necessary for designing the rational microphone of a kind of comparison.
The technical scheme provided the present invention below in conjunction with Fig. 2 to Fig. 6 is carried out specifically
Elaboration.
As shown in Figure 2 to Figure 3, this microphone includes shell 10, the epoxy set gradually
Substrate pad 60, back pole plate 30, vibrating diaphragm 40, wiring board combination 50, in the middle part of shell 10
Offer the first acoustic aperture 11, in the middle part of back pole plate 30, offer multiple second acoustic aperture 31, ring
The 3rd acoustic aperture 61 matched with the second acoustic aperture 31 is offered in the middle part of oxygen substrate pad 60,
3rd acoustic aperture 61 shifts to install with each second acoustic aperture 31 respectively.
In the present invention, for making integral layout compacter, reasonable, it is ensured that work
Reliability and the transaudient effect of microphone, above-mentioned each acoustic aperture is opened in the axle of corresponding component respectively
To direction medium position.
In an initial condition, overall construction design is reasonable, compact in design, outward for this microphone
Epoxy substrate pad 60 is used to replace existing metal gasket between shell 10 and back pole plate 30
Sheet, epoxy substrate pad 60 is difficult to heat conduction, improves the heat-proof quality of microphone, epoxy
In the middle part of substrate pad 60 solid and offer and shift to install with the acoustic aperture on back pole plate 30
3rd acoustic aperture 61, transaudient satisfactory for result；Each acoustic aperture coordinates closely and the most also
Underlapped, when carrying out salt spray test and moisture-resistant test, the material such as water smoke is not easily accessible biography
Bottom sound device, and then the structure such as protection circuit plate is not corroded, and test is greatly improved
Percent of pass, improves decay resistance and the temperature sensitivity of microphone, and microphone works
Reliably, service life is long.
It is noted that the microphone process using this case said structure to arrange is moistureproof,
After protection from fumes, heat insulation etc. is tested, percent of pass of its test, close to 100%, improves
Production efficiency, it is adaptable to large-scale industrial production operation.
Further, for promoting the reasonability of layout and ensureing the transaudient effect of microphone,
Preferably first acoustic aperture 11 and the 3rd acoustic aperture 61 are disposed as multiple, and the 3rd acoustic aperture 61 is respectively
Shift to install with each first acoustic aperture 11, each second acoustic aperture 31.
Simply saying, shown in Fig. 3, in terms of axial direction, the acoustic aperture of each layer all staggers
Arrangement so that the corrosive deposits such as the water smoke in the external world, salt fog are not easily accessible bottom microphone,
Especially vibrating diaphragm 40 and wiring board combines 50 positions, installs closely, it is ensured that microphone work
The reliability made.
It is more tight for making epoxy substrate pad 60 coordinate with back pole plate 30, shell 10,
Make sound wave transmission steadily, promote transaudient effect, it is preferable that epoxy substrate pad 60
It is divided into annular outer ring portion 63 and disc inner ring portion 62 that integral type arranges from outside to inside,
The end face in outer ring portion 63 is slightly above the corresponding end face in inner ring portion 62 or right with inner ring portion 62
Answering end face, the 3rd acoustic aperture 61 is opened in inner ring portion 62.
It is further preferred that combine shown in Fig. 4 to Fig. 6, for ensureing the reliability of work,
Improve epoxy substrate pad 60 electric conductivity, outer ring portion 63 is axially equipped with for
At least one of UNICOM's outer ring portion 63 both ends of the surface (i.e. epoxy substrate pad 60 both ends of the surface)
Plated through-hole 64, outer ring portion 63 both ends of the surface and plated through-hole 64 medial surface are the most uniformly
It is coated with metal level 65.Preferably plated through-hole 64 is two and is symmetrically arranged at outer ring portion 63
On, and the lateral surface in preferred outer ring portion 63 is also coated with metal level 65, to promote conduction
Property.
The present invention offers on epoxy substrate pad 60 and is positioned at the 3rd acoustic aperture 61 periphery
Plated through-hole 64 at this gasket surface metal cladding 65 so that upper and lower two of pad
End face UNICOM, electric conductivity is excellent.
Further, the present invention is radially equipped with at least one ventilating groove in outer ring portion 63
66, ventilating groove 66 extends through metal level 65.
Shape is all surrounded due to the pad end face after frock and between shell 10, back pole plate 30
Becoming cavity, arranging of above-mentioned ventilating groove 66 can be ventilated in time and take away waste heat, protects
The stationarity of card pad work, promotes sound transmission effect；During work, it is to avoid pad goes out
Now expand with heat and contract with cold phenomenon, reduce between vibrating diaphragm 40, back pole plate 30, pad three
Gap and the impact of distance, reduce the interference to frequency of vibration, and then ensure transaudient work
Stability.
Above-mentioned shell 10 is as the installation matrix of microphone, for improving within shell 10
Compactedness, it is preferable that two end faces of metal level 65 respectively with back pole plate 30 corresponding end
Face, shell 10 medial surface are close to arrange.
As the preferred or optional embodiment of one, shell 10 has opening, the first sound
Hole 11 is opened in shell 10 away from the end face of opening, and fits tightly on this end face
There is dustcloth 70.Such structure arranges and is possible not only to dust-tight, the extraneous bulky grain thing of isolation
Matter, protects internal component the most further and does not weathers.
Preferably, for making the overall transaudient effect of microphone more preferable, work efficiency is higher,
Insulation spacer 80 and insulation spacer 80 it is provided with between vibrating diaphragm 40 and back pole plate 30
Upper surface fits tightly with the corresponding end face of back pole plate 30, epoxy substrate pad 60, the back of the body
Pole plate 30, insulation spacer 80, vibrating diaphragm 40, wiring board combination 50 is installed in shell 10
In, between wiring board combination 50 and insulation spacer 80, it is additionally provided with dead ring 90, shakes
Film 40 is embedded in interior and vibrating diaphragm 40, dead ring 90 the upper and lower end face of dead ring 90 and distinguishes
Flush, and simultaneously lower surface with insulation spacer 80, the upper surface of the two fits tightly, two
It is closely coupled that the lower surface of person combines 50 with wiring board simultaneously.
In the present case, for making microphone high frequency perform better than, preferably open in the middle part of shell 10
It is provided with the most equally distributed six the first acoustic aperture 11, offers in the middle part of back pole plate 30
Five the second acoustic aperture 31, one of them second acoustic aperture 31 is arranged on back pole plate 30 centre bit
Put and remain four the second acoustic aperture 31, second acoustic aperture 31 around center to be uniformly distributed, ring
Offering the line of centres in the middle part of oxygen substrate pad 60 is foursquare four the 3rd acoustic aperture 61,
3rd acoustic aperture 61 shifts to install with each first acoustic aperture 11, each second acoustic aperture 31 respectively.
Specific embodiment described herein is only to present invention spirit theory for example
Bright.Those skilled in the art can be to described specific embodiment
Make various amendment or supplement or use similar mode to substitute, but without departing from
The spirit of the present invention or surmount scope defined in appended claims.
Claims (9)
1. a microphone, it is characterised in that: include shell, the epoxy radicals set gradually
Plate pad, back pole plate, vibrating diaphragm, wiring board combine, and offer first in the middle part of described shell
Acoustic aperture, offers multiple second acoustic aperture, described epoxy substrate pad in the middle part of described back pole plate
Middle part offer the 3rd acoustic aperture matched with the second acoustic aperture, described 3rd acoustic aperture respectively with
Each second acoustic aperture shifts to install.
A kind of microphone the most according to claim 1, it is characterised in that: described the
One acoustic aperture and the 3rd acoustic aperture are disposed as multiple, described 3rd acoustic aperture respectively with each first sound
Hole, each second acoustic aperture shift to install.
A kind of microphone the most according to claim 1 and 2, it is characterised in that: institute
State annular outer ring portion and disc that epoxy substrate pad is divided into integral type to arrange from outside to inside
Inner ring portion, the end face in described outer ring portion be slightly above inner ring portion corresponding end face or with inner ring portion
Corresponding end face, described 3rd acoustic aperture is opened in inner ring portion.
A kind of microphone the most according to claim 3, it is characterised in that: outside described
At least one plated through-hole for UNICOM's outer ring portion both ends of the surface axially it is equipped with in circle portion,
Described outer ring portion's both ends of the surface and plated through-hole medial surface are the most uniformly coated with metal level.
A kind of microphone the most according to claim 4, it is characterised in that: outside described
Radially being equipped with at least one ventilating groove in circle portion, described ventilating groove extends through metal level.
A kind of microphone the most according to claim 4, it is characterised in that: described gold
Belong to two end faces end face corresponding with back pole plate respectively of layer, shell medial surface is close to arrange.
A kind of microphone the most according to claim 1 and 2, it is characterised in that: institute
Stating shell and have opening, described first acoustic aperture is opened in shell away from the end face of opening,
And it is closely fitted with dustcloth on this end face.
A kind of microphone the most according to claim 1 and 2, it is characterised in that:
Insulation spacer and the upper surface of insulation spacer and back pole plate it is provided with between vibrating diaphragm and back pole plate
Corresponding end face fit tightly, described epoxy substrate pad, back pole plate, insulation spacer,
Vibrating diaphragm, wiring board combination be respectively mounted in the enclosure, wiring board combination and insulation spacer it
Between be additionally provided with dead ring, described vibrating diaphragm is embedded in dead ring and vibrating diaphragm, dead ring
Upper and lower end face flushes respectively, and the upper surface of the two is the tightest with the lower surface of insulation spacer
Closely connected conjunction, the lower surface of the two is simultaneously closely coupled with wiring board combination.
A kind of microphone the most according to claim 2, it is characterised in that: outside described
The most equally distributed six the first acoustic aperture are offered, in the middle part of described back pole plate in the middle part of shell
Offering five the second acoustic aperture, one of them second acoustic aperture is arranged on back pole plate center
And the second acoustic aperture that four rising tone orifice rings of residue are around center is uniformly distributed, described epoxy radicals
Offering the line of centres in the middle part of plate pad is foursquare four the 3rd acoustic aperture, the described 3rd
Acoustic aperture shifts to install with each first acoustic aperture, each second acoustic aperture respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610093215.1A CN105848053A (en) | 2016-02-19 | 2016-02-19 | Microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610093215.1A CN105848053A (en) | 2016-02-19 | 2016-02-19 | Microphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105848053A true CN105848053A (en) | 2016-08-10 |
Family
ID=56586846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610093215.1A Pending CN105848053A (en) | 2016-02-19 | 2016-02-19 | Microphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105848053A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101080109A (en) * | 2007-06-14 | 2007-11-28 | 宁波鑫丰泰电器有限公司 | Front pole capacitance microphone |
| CN201066930Y (en) * | 2007-06-14 | 2008-05-28 | 宁波鑫丰泰电器有限公司 | Front pole capacitance microphone |
| CN104332156A (en) * | 2014-11-26 | 2015-02-04 | 浙江搏奥汽摩部件有限公司 | Automobile electric loudspeaker |
-
2016
- 2016-02-19 CN CN201610093215.1A patent/CN105848053A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101080109A (en) * | 2007-06-14 | 2007-11-28 | 宁波鑫丰泰电器有限公司 | Front pole capacitance microphone |
| CN201066930Y (en) * | 2007-06-14 | 2008-05-28 | 宁波鑫丰泰电器有限公司 | Front pole capacitance microphone |
| CN104332156A (en) * | 2014-11-26 | 2015-02-04 | 浙江搏奥汽摩部件有限公司 | Automobile electric loudspeaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160810 |