CN201440725U - Minitype condenser microphone - Google Patents
Minitype condenser microphone Download PDFInfo
- Publication number
- CN201440725U CN201440725U CN200920025928XU CN200920025928U CN201440725U CN 201440725 U CN201440725 U CN 201440725U CN 200920025928X U CN200920025928X U CN 200920025928XU CN 200920025928 U CN200920025928 U CN 200920025928U CN 201440725 U CN201440725 U CN 201440725U
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- CN
- China
- Prior art keywords
- circuit board
- dead ring
- capacitance type
- wiring board
- board frame
- 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.)
- Expired - Fee Related
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- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
- Telephone Set Structure (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
The utility model discloses a minitype condenser microphone, which adopts a circuit board substrate provided with a signal processing element, a tubular circuit board frame provided with openings at both ends and a bottom plate to form an outer protection structure of the minitype condenser microphone and also adopts an independent insulating ring to isolate circuits of two electrodes for connecting a capacitor module, the insulating ring can be independently manufactured, no complex manufacturing technology is required for the circuit board, and the manufacturing cost of the product is lower.
Description
Technical field
The utility model relates to a kind of miniature capacitance type microphone, relates to a kind of application circuit panel material specifically and protects framework, lower, the comparatively simple miniature capacitance type microphone of manufacture craft of cost as miniature capacitance type microphone.
Background technology
Along with electronic products such as mobile phone, notebook, hearing aids are more and more littler to the dimensional requirement of inner body, the miniature capacitance type microphone less, that be convenient to automated production of taking measurements greatly is employed.In this case; there is new design to adopt the wiring board substrate that Signal Processing Element is installed; the tubular circuit board frame of a both ends open and base plate form the outer protection structure of miniature capacitance type microphone; inside is provided with capacitance component, electronic circuit etc., and for example Chinese patent application number has just been represented this structure for the Chinese patent of CN200720159308.6.The design focal point of CN200720159308.6 patent is the design of circuit board frame, the central part of circuit board frame is that hole is as holding capacitance component, the space of parts such as electronic circuit, be disposed with metal conducting layer and insulating coating on the madial wall of hole, metal conducting layer can be electrically connected to an electrode of capacitance component on the wiring board substrate, another electrode of capacitance component can be by being installed in circuit in the circuit board frame hole (in the CN200720159308.6 patent, this circuit is realized by a metal polar ring) be electrically connected on the wiring board substrate, insulating coating can be kept apart metal conducting layer and metal polar ring, avoids short circuit.
In the CN200720159308.6 patent, do not describe clearly how metal conducting layer and insulating coating are set on the madial wall of circuit board frame hole, in fact, the manufacture craft of this circuit board frame is very complicated, cost of manufacture is higher, and this does not meet current electronic product requirement requirement cheaply.
So a kind of application circuit panel material of needs design is as miniature capacitance type microphone protection framework and cost is lower, the comparatively simple miniature capacitance type microphone of manufacture craft.
The utility model content
Technical problem to be solved in the utility model provides a kind of application circuit panel material as miniature capacitance type microphone protection framework and cost is lower, the comparatively simple miniature capacitance type microphone of manufacture craft.
For solving the problems of the technologies described above; the technical solution of the utility model is: miniature capacitance type microphone; comprise a wiring board substrate that Signal Processing Element is installed; the tubular circuit board frame of a both ends open and a base plate; the two ends that described wiring board substrate and base plate are installed in described circuit board frame respectively form a protection structure; described protection structure is provided with at least one sound hole that is used to receive voice signal; described circuit board frame inner surface is provided with metal conducting layer; described protection inside configuration is equipped with the capacitance component and the metal parts that are used for sound-electrical signal conversion; an electrode of described capacitance component is connected on the described wiring board substrate from described metal parts; another electrode of described capacitance component is connected on the described wiring board substrate from the metal conducting layer of described base plate and described circuit board frame inboard; and; described circuit board frame inside is equipped with a dead ring, and described dead ring is connected described metal parts with described metal parts a electrode and the metal conducting layer of described circuit board frame inboard are isolated.The miniature capacitance type microphone of this structure adopt one independently the dead ring circuit that will connect two electrodes of capacitance component keep apart, dead ring can independently complete, and does not need complicated wiring board manufacture craft, determines that the cost of manufacture of product is lower.
The improvement of the technical program is: the flat shape of described circuit board frame and described dead ring is a square frame shape.The circuit board frame of this design is more or less freely arranges on wiring board sheet material, makes simply, and product structure is convenient to be installed in the terminal electronic product, and the dead ring of this shape can select resin material to adopt Shooting Technique to make.
The improvement of the technical program is: described capacitance component all is arranged on described dead ring inside.
The improvement of the technical program is: an electrode of described capacitance component is arranged on described dead ring inside, and another electrode is arranged on beyond the end of described dead ring.
The improvement of the technical program is: described metal parts is a becket.
Technique scheme is improved and is: described metal parts is elastic metallic parts.
The improvement of the technical program is: an end of described elastic metallic parts is welded on the described wiring board substrate.
Preferably, capacitance component can be formed for a pole plate, a vibrating diaphragm and the isolation diaphragm that is arranged between the two, and pole plate is an input electrode, and the sound hole is arranged on the base plate, and this structure is referred to as " back-polar type " product structure, comparatively is applicable to the scheme of this patent; Base plate is provided with wiring board or conductive metal sheet of metal conducting layer for the surface.
Owing to adopted technique scheme; miniature capacitance type microphone adopts the wiring board substrate that Signal Processing Element is installed; the tubular circuit board frame of a both ends open and base plate form the outer protection structure of miniature capacitance type microphone; and adopt one independently the dead ring circuit that will connect two electrodes of capacitance component keep apart; dead ring can independently complete; do not need complicated wiring board manufacture craft, the cost of manufacture of product is lower.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment one;
Fig. 2 is the horizontal section schematic diagram of the utility model embodiment one circuit board frame;
Fig. 3 is the schematic perspective view of the utility model embodiment one dead ring;
Fig. 4 is the structural representation of the utility model embodiment two.
Embodiment
Embodiment one:
Explain the miniature capacitance type microphone structure of the implementation case in conjunction with Fig. 1, Fig. 2, Fig. 3, its body shape is square, comprising:
One square, set in advance and be useful on a plurality of pads 11 that miniature capacitance type microphone is installed and the wiring board substrate 1 of a Signal Processing Element 12, the square tube shape circuit board frame 2 of a both ends open and surface are provided with the base plate 3 of metal level 31, and the two ends that wiring board substrate 1 and base plate 3 are installed in circuit board frame 2 respectively form a protection structure;
The base plate 3 of protection structure is provided with a sound hole 32 that is used to receive voice signal;
Circuit board frame 2 inboards are provided with metal conducting layer 21;
The protection inside configuration is equipped with one and is used for the capacitance component of sound-electrical signal conversion and the metal parts 5 of an annular, capacitance component comprises that one sets in advance the vibrating diaphragm 8 on becket 81, a pole plate 6 and an isolation diaphragm 7, the pole plate 6 of capacitance component is connected on the wiring board substrate 1 from metal parts 5 as input electrode, and the vibrating diaphragm 8 of capacitance component is connected on the wiring board substrate 1 by the metal level on the base plate 3 31, the circuit board frame 2 inboard large-area metal conductive layers 21 (as shown in Figure 1 and Figure 2) that are provided with as grounding electrode;
Circuit board frame 2 inside are equipped with the square frame shape dead ring 4 (as shown in Figure 3) that a resin material is made, and dead ring 4 is isolated the metal conducting layer 21 of metal parts 5 and whole capacitor assembly and circuit board frame 2 inboards;
Be respectively arranged with metal level 13 and 31 on the adhesive surface of wiring board substrate 1, base plate 3 and circuit board frame 2, metal level 13 and 31 can be realized the electrical connection of miniature capacitance type microphone inside preferably.
The miniature capacitance type microphone of this " back-polar type " structure, adopt one independently dead ring 4 circuit that will connect two electrodes of capacitance component keep apart, dead ring can independently complete, and does not need wiring board manufacture craft complicated in the background technology, and cost of manufacture is cheap.
Embodiment two:
As Fig. 4 is the structural representation of present embodiment, and the main distinction of present embodiment and embodiment one is:
The pole plate 6 of an electrode of conduct of capacitance component is arranged on dead ring 4 inside, is arranged on beyond the end of dead ring 4 as the vibrating diaphragm 8 of another electrode.Rely on this design, dead ring 4 still can be realized the corresponding insulation effect, and can be so that the area of vibrating diaphragm 8 increases, and the effective relative area between pole plate 6 and the vibrating diaphragm 8 increases, invalid relative area reduces, thereby parasitic capacitance reduces, and sensitivity increases.
The specific design that the utility model is listed all belongs to preferred scheme, other designs such as analogue amplifier, digital amplifier that for example Signal Processing Element are adjusted into other types all belong to very simple conversion, should be understood within the protection range of this patent; The circuit design of wiring board substrate inside, the pad design on the wiring board substrate etc. belong to the known technology scope, in this not elaboration in addition.
Claims (7)
1. miniature capacitance type microphone; comprise a wiring board substrate that Signal Processing Element is installed; the tubular circuit board frame of a both ends open and a base plate; the two ends that described wiring board substrate and base plate are installed in described circuit board frame respectively form a protection structure; described protection structure is provided with at least one sound hole that is used to receive voice signal; described circuit board frame inner surface is provided with metal conducting layer; described protection inside configuration is equipped with the capacitance component and the metal parts that are used for sound-electrical signal conversion; an electrode of described capacitance component is connected on the described wiring board substrate from described metal parts; another electrode of described capacitance component is connected on the described wiring board substrate from the metal conducting layer of described base plate and described circuit board frame inboard; it is characterized in that: described circuit board frame inside is equipped with a dead ring, and described dead ring is connected described metal parts with described metal parts a electrode and the metal conducting layer of described circuit board frame inboard are isolated.
2. miniature capacitance type microphone as claimed in claim 1 is characterized in that: the flat shape of described circuit board frame and described dead ring is a square frame shape.
3. miniature capacitance type microphone as claimed in claim 1 is characterized in that: described capacitance component all is arranged on described dead ring inside.
4. miniature capacitance type microphone as claimed in claim 1 is characterized in that: an electrode of described capacitance component is arranged on described dead ring inside, and another electrode is arranged on beyond the end of described dead ring.
5. as claim 1,2,3 or 4 described miniature capacitance type microphones, it is characterized in that: described metal parts is a becket.
6. as claim 1,2,3 or 4 described miniature capacitance type microphones, it is characterized in that: described metal parts is elastic metallic parts.
7. miniature capacitance type microphone as claimed in claim 6 is characterized in that: an end of described elastic metallic parts is welded on the described wiring board substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920025928XU CN201440725U (en) | 2009-05-23 | 2009-05-23 | Minitype condenser microphone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920025928XU CN201440725U (en) | 2009-05-23 | 2009-05-23 | Minitype condenser microphone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201440725U true CN201440725U (en) | 2010-04-21 |
Family
ID=42545380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920025928XU Expired - Fee Related CN201440725U (en) | 2009-05-23 | 2009-05-23 | Minitype condenser microphone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201440725U (en) |
-
2009
- 2009-05-23 CN CN200920025928XU patent/CN201440725U/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: 20100421 Termination date: 20160523 |