CN201514238U - Airflow sensor - Google Patents
Airflow sensor Download PDFInfo
- Publication number
- CN201514238U CN201514238U CN2009202392011U CN200920239201U CN201514238U CN 201514238 U CN201514238 U CN 201514238U CN 2009202392011 U CN2009202392011 U CN 2009202392011U CN 200920239201 U CN200920239201 U CN 200920239201U CN 201514238 U CN201514238 U CN 201514238U
- Authority
- CN
- China
- Prior art keywords
- ring
- circuit board
- vibrating diaphragm
- shell
- case
- 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 - Lifetime
Links
- 239000002184 metal Substances 0.000 claims abstract description 20
- 229910052751 metal Inorganic materials 0.000 claims abstract description 20
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000009413 insulation Methods 0.000 claims abstract description 7
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 7
- 239000011148 porous material Substances 0.000 claims description 12
- 238000007747 plating Methods 0.000 claims description 4
- 230000035945 sensitivity Effects 0.000 abstract description 8
- 239000012528 membrane Substances 0.000 abstract description 7
- 239000000428 dust Substances 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- 239000003990 capacitor Substances 0.000 description 9
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 239000011889 copper foil Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 229920002379 silicone rubber Polymers 0.000 description 3
- 239000004945 silicone rubber Substances 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 229920002799 BoPET Polymers 0.000 description 1
- 239000005041 Mylar™ Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
Images
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- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
Abstract
The utility model discloses an airflow sensor, which comprises a case, wherein a metal vibration ring is arranged at the bottom of an inner cavity of the case, a vibration membrane is tightly tensioned and pasted on the upper end surface of the vibration ring, nickel is plated on the surface of the vibration membrane, the upper side of the edge of the vibration membrane is provided with an insulation pad ring, a metal electrode plate is tightly pressed on the pad ring, a metal ring is tightly pressed on the electrode plate, the upper end of the metal ring is provided with a circuit board, the upper part of the case is tightly pressed with each component in a mode of inwards flanging, the outer side of the circuit board is provided with a wiring terminal, and the bottom of the case is provided with an airflow hole corresponding to the position of the vibration membrane. An insulation ring is sheathed and arranged outside the metal ring, a dust prevention screen is pasted on the outer side of the bottom of the case, an electrode plate air hole is arranged on the electrode plate, and a circuit board air hole is arranged on the circuit board. The airflow sensor with the structure has the advantages of reasonable structure, small size and higher sensitivity, is suitable for being used in occasions for detecting the tiny airflow change, and is particularly suitable for being used in airflow detection occasions with smaller space.
Description
Technical field
The utility model relates to a kind of pneumatic sensor.
Background technology
Pneumatic sensor, as the term suggests be exactly the perception variations in flow, and variations in flow is converted into the sensor of corresponding electric signal with it.Traditional pneumatic sensor is to be made of silicone rubber membrane drive machinery or magnetic switch at present, when air flow stream is crossed silicone rubber membrane, silicone rubber membrane shakes, thereby drive the electric signal that the air-flow conversion is represented in the output of corresponding physical construction or magnetic switch, the conventional air sensor construction is simple, easy to use, use very extensive.The weak point of conventional air sensor is: volume is big, and sensitivity is low, is unsuitable for the applications of having relatively high expectations in induction sensitivity.
The utility model content
The technical problems to be solved in the utility model is to provide a kind of rational in infrastructure at above-mentioned deficiency, and volume is small and exquisite, and the higher a kind of pneumatic sensor of sensitivity.
For solving the problems of the technologies described above, this pneumatic sensor comprises shell, its design feature is: shell inner cavity bottom is provided with the metal ring that shakes, shake to encircle to strain on the upper surface and be pasted with vibrating diaphragm, the vibrating diaphragm plating nickel on surface, vibrating diaphragm limit portion upside has been provided with the insulation gasket ring, compressed metal polar plate on the gasket ring, compressed becket on the pole plate, the becket upper end is provided with circuit board, shell upper is pressed together above-mentioned each parts by the form to in-flanges, and the circuit board outside is provided with connection terminal, and outer casing bottom is provided with the airflow hole corresponding with the vibrating diaphragm position.
The pneumatic sensor of this structure realizes that by parallel plate capacitor formula structure volume is small and exquisite and sensitivity is higher.Parallel plate capacitor formula structure mainly comprises vibrating diaphragm and the metal polar plate that is arranged in the shell, sticking on metal after the tension of the avris of vibrating diaphragm shakes on the ring, like this, vibrating diaphragm just is plane under the support of the ring that shakes, in order to make vibrating diaphragm and metal polar plate constitute plane-parallel capacitor, nickel plating on the vibrating diaphragm, and between vibrating diaphragm and metal polar plate, be provided with the insulation gasket ring, like this, vibrating diaphragm and metal polar plate just the insulation gasket ring support under parallel interval come, constituted structural plane-parallel capacitor, vibrating diaphragm and metal polar plate are respectively two parallel plate electrodes of plane-parallel capacitor.The nickel coating of vibrating diaphragm is electrically connected with circuit board by shake ring and shell, metal polar plate also is electrically connected with the circuit board formation by the upper metal ring, like this, plane-parallel capacitor just is electrically connected with circuit board, when outer gas stream drives the vibrating diaphragm vibrations by airflow hole, distance changes between vibrating diaphragm and the metal polar plate, the capacity of parallel plate capacitor value just changes, circuit board sends the capacitance of this variation to external circuit by connection terminal, thereby realizes the effect of sensitive perception air-flow.
As improvement, the becket outside is set with dead ring.
In order to prevent that becket from contacting and short circuit with outer casing inner wall, the becket outside is set with dead ring, and dead ring can be isolated becket and shell, thereby improves the stability of this pneumatic sensor.
As further improvement, the outer casing bottom outside is pasted with Air Filter.
Cross airflow hole when air communication and blow vibrating diaphragm when vibrations, impurity in the air-flow also can arrive vibrating diaphragm together, of long duration can influence vibration of diaphragm effect and life-span, after on the shell Air Filter being set, can filter out impurities, guarantee the sensitivity and the life-span of this pneumatic sensor.
As further improving, pole plate is provided with the pole plate pore again, and circuit board is provided with the circuit board pore.
In order further to improve the sensitivity of this pneumatic sensor, be provided with the pole plate pore on pole plate, circuit board is provided with the circuit board pore, like this, one side of vibrating diaphragm is communicated with atmosphere by airflow hole, the opposite side of vibrating diaphragm also is communicated with atmosphere by pole plate pore and circuit board pore, like this, and the atmospheric pressure unanimity of vibrating diaphragm both sides, when air-flow arrives, the amplitude of vibrating diaphragm can be bigger, and the change in electric amplitude is also just bigger, and induced signal is stronger.
In sum, adopt the pneumatic sensor of this structure, rational in infrastructure, volume is small and exquisite, and sensitivity is higher, is adapted at detecting in the occasion of small variations in flow using, and is particluarly suitable for the less air-flow in space and detects occasion and use.
Description of drawings
In conjunction with the accompanying drawings the utility model is described in further details:
Fig. 1 is a structural representation of the present utility model.
Among Fig. 1: 1 is shell, and 2 are the ring that shakes, and 3 is vibrating diaphragm, and 4 is gasket ring, and 5 is pole plate, and 6 is becket, and 7 is circuit board, and 8 is connection terminal, and 9 is airflow hole, and 10 is dead ring, and 11 is Air Filter, and 12 is the pole plate pore, and 13 is the circuit board pore.
Embodiment
As shown in Figure 1, structural representation for this pneumatic sensor, this pneumatic sensor comprises shell 1, shell 1 is tubular, shell 1 intracavity bottom be equipped with metal shake the ring 2, shake to encircle on 2 upper surfaces and be pasted with vibrating diaphragm 3, vibrating diaphragm 3 is the plane of tension, vibrating diaphragm 3 adopts mylar, elasticity is stronger, vibrating diaphragm 3 plating nickel on surface, vibrating diaphragm 3 limit portion upsides are provided with insulation gasket ring 4, the size of gasket ring 4 is consistent with ring 2 sizes of shaking, compressed metal polar plate 5 on the gasket ring 4, pole plate 5 is provided with pole plate pore 12, compressed becket 6 on the pole plate 5, becket 6 outsides are set with dead ring 10, can prevent that becket 6 and shell 1 inboard from contacting and short circuit, for fear of pole plate 5 outsides and shell 1 inboard contact short circuit, dead ring 10 also is sleeved on the pole plate outside, becket 6 upper ends are provided with circuit board 7, circuit board 7 is provided with circuit board pore 13, and shell 1 top is pressed on the upper surface of circuit board 7 by the form to in-flanges, like this, each parts just is pressed together mutually in the shell, and shell 1 bottom is provided with the airflow hole 9 corresponding with vibrating diaphragm 3 positions.The nickel coating of vibrating diaphragm 3 is electrically connected with shell 1 by the ring 2 that shakes, and shell 1 is electrically connected with the Copper Foil of circuit board 7 upper surfaces; Pole plate 5 is electrically connected with the Copper Foil of circuit board 7 lower surfaces by becket 6, circuit board 7 lateral surfaces are provided with connection terminal 8, the Copper Foil of circuit board 7 upper and lower end faces is electrically connected respectively at two connection terminals on circuit board 7 lateral surfaces 8, with after external unit is electrically connected, vibrating diaphragm 3 and pole plate 5 have just constituted plane-parallel capacitor, like this by connection terminal 8, when outer gas stream reaches vibrating diaphragm 3 by airflow hole 9, vibrating diaphragm 3 vibrations, the capacity of parallel plate capacitor value changes, thereby provides induced signal.In order to prevent that dust or other impurity from entering airflow hole 9, shell 1 bottom outside is pasted with Air Filter 11.
Claims (4)
1. pneumatic sensor, comprise shell (1), it is characterized in that: shell (1) intracavity bottom is provided with the metal ring (2) that shakes, shaking, tension is pasted with vibrating diaphragm (3) on ring (2) upper surface, vibrating diaphragm (3) plating nickel on surface, vibrating diaphragm (3) limit portion upside is provided with insulation gasket ring (4), compressed metal polar plate (5) on the gasket ring (4), compressed becket (6) on the pole plate (5), becket (6) upper end is provided with circuit board (7), shell (1) top is pressed together above-mentioned each parts by the form to in-flanges, and circuit board (7) outside is provided with connection terminal (8), and shell (1) bottom is provided with the airflow hole (9) corresponding with vibrating diaphragm (3) position.
2. pneumatic sensor as claimed in claim 1 is characterized in that: becket (6) outside is set with dead ring (10).
3. pneumatic sensor as claimed in claim 1 or 2 is characterized in that: shell (1) bottom outside is pasted with Air Filter (11).
4. pneumatic sensor as claimed in claim 1 or 2 is characterized in that: pole plate (5) is provided with pole plate pore (12), and circuit board (7) is provided with circuit board pore (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202392011U CN201514238U (en) | 2009-09-28 | 2009-09-28 | Airflow sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202392011U CN201514238U (en) | 2009-09-28 | 2009-09-28 | Airflow sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201514238U true CN201514238U (en) | 2010-06-23 |
Family
ID=42485650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202392011U Expired - Lifetime CN201514238U (en) | 2009-09-28 | 2009-09-28 | Airflow sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201514238U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102631029A (en) * | 2009-09-18 | 2012-08-15 | 微创高科有限公司 | Electronic cigarette |
| CN104374938A (en) * | 2014-12-11 | 2015-02-25 | 哈尔滨东方报警设备开发有限公司 | Simple dustproof device for gas detector |
| CN105203139A (en) * | 2015-07-28 | 2015-12-30 | 纳智源科技（唐山）有限责任公司 | Pneumatic sensor |
| WO2017118138A1 (en) * | 2016-01-08 | 2017-07-13 | 纳智源科技（唐山）有限责任公司 | Triboeletricity based pneumatic sensor, airflow processing apparatus, and intelligent pneumatic sensor system |
| WO2018223674A1 (en) * | 2017-06-08 | 2018-12-13 | 纳智源科技（唐山）有限责任公司 | Self-pre-warning gas sensor |
| CN109951958A (en) * | 2019-04-24 | 2019-06-28 | 深圳市众合智联科技有限公司 | Ultrathin surface-mount formula gas flow transducer |
| US10420374B2 (en) | 2009-09-18 | 2019-09-24 | Altria Client Services Llc | Electronic smoke apparatus |
| CN111212365A (en) * | 2019-11-21 | 2020-05-29 | 歌尔股份有限公司 | Airflow sensor and electronic device provided with same |
| CN111700315A (en) * | 2020-06-05 | 2020-09-25 | 潍坊歌尔微电子有限公司 | Airflow sensor and electronic cigarette for electronic cigarette |
| CN114235015A (en) * | 2021-12-20 | 2022-03-25 | 厦门芯阳科技股份有限公司 | Position sensor |
-
2009
- 2009-09-28 CN CN2009202392011U patent/CN201514238U/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10420374B2 (en) | 2009-09-18 | 2019-09-24 | Altria Client Services Llc | Electronic smoke apparatus |
| CN102631029B (en) * | 2009-09-18 | 2015-01-14 | 卓智微电子有限公司 | Electronic cigarette device and airflow and flow direction detector of electronic cigarette |
| CN102631029A (en) * | 2009-09-18 | 2012-08-15 | 微创高科有限公司 | Electronic cigarette |
| US11974610B2 (en) | 2009-09-18 | 2024-05-07 | Altria Client Services Llc | Electronic smoke apparatus |
| CN104374938A (en) * | 2014-12-11 | 2015-02-25 | 哈尔滨东方报警设备开发有限公司 | Simple dustproof device for gas detector |
| CN105203139A (en) * | 2015-07-28 | 2015-12-30 | 纳智源科技（唐山）有限责任公司 | Pneumatic sensor |
| CN105203139B (en) * | 2015-07-28 | 2017-08-08 | 纳智源科技（唐山）有限责任公司 | Pneumatic transmitter |
| WO2017118138A1 (en) * | 2016-01-08 | 2017-07-13 | 纳智源科技（唐山）有限责任公司 | Triboeletricity based pneumatic sensor, airflow processing apparatus, and intelligent pneumatic sensor system |
| WO2018223674A1 (en) * | 2017-06-08 | 2018-12-13 | 纳智源科技（唐山）有限责任公司 | Self-pre-warning gas sensor |
| CN109951958B (en) * | 2019-04-24 | 2024-03-22 | 深圳市众合智联科技有限公司 | Ultrathin surface-mounted airflow sensor |
| CN109951958A (en) * | 2019-04-24 | 2019-06-28 | 深圳市众合智联科技有限公司 | Ultrathin surface-mount formula gas flow transducer |
| CN111212365A (en) * | 2019-11-21 | 2020-05-29 | 歌尔股份有限公司 | Airflow sensor and electronic device provided with same |
| CN111700315A (en) * | 2020-06-05 | 2020-09-25 | 潍坊歌尔微电子有限公司 | Airflow sensor and electronic cigarette for electronic cigarette |
| CN114235015A (en) * | 2021-12-20 | 2022-03-25 | 厦门芯阳科技股份有限公司 | Position sensor |
| CN114235015B (en) * | 2021-12-20 | 2024-03-22 | 厦门芯阳科技股份有限公司 | Position sensor |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100623 |