CN203011613U - Machine oil MEMS pressure sensor based on adapter piece sealing structure - Google Patents
Machine oil MEMS pressure sensor based on adapter piece sealing structure Download PDFInfo
- Publication number
- CN203011613U CN203011613U CN 201220740719 CN201220740719U CN203011613U CN 203011613 U CN203011613 U CN 203011613U CN 201220740719 CN201220740719 CN 201220740719 CN 201220740719 U CN201220740719 U CN 201220740719U CN 203011613 U CN203011613 U CN 203011613U
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- CN
- China
- Prior art keywords
- web member
- connecting member
- switching piece
- machine oil
- mems pressure
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- 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
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- Measuring Fluid Pressure (AREA)
- Switches Operated By Changes In Physical Conditions (AREA)
Abstract
The utility model discloses a machine oil MEMS pressure sensor based on an adapter piece sealing structure. The machine oil MEMS pressure sensor based on the adapter piece sealing structure comprises a shell and a connecting member. The connecting member is located in the shell, and permanent magnets are arranged and fixed at the inner sides of the connecting member and are annular. Adapter pieces are arranged at the outer side of the connecting member, and insulating layers are arranged on the inner side surfaces of the adapter pieces. The adapter pieces are made of magnetic materials, so that the adapter pieces are adsorbed on the outer side of the connecting member due to the magnetism; and due to the insulating layers, the connecting member and the adapter pieces are not conductive. According to the utility model, the connecting member and the adapter pieces are absorbed and connected with each other via the magnetism, so that a wall welding technology can be used, and a usage problem caused by aging after welding can be prevented.
Description
Technical field
The utility model relates to a kind of car force sensor, and particularly a kind of volume with MEMS technology development is little, lightweight, response is fast, highly sensitive, be easy to batch production, engine oil pressure pickup cheaply.
Background technology
Automobile sensor as the information source of Auto Electronic Controlled System, is the critical component of Auto Electronic Controlled System, is also one of core content of technical field of automotive electronics research.Automobile sensor carries out in real time, measures accurately and control various information such as temperature, pressure, position, rotating speed, acceleration and vibrations.The key of weighing modern sedan limousine control system level just is quantity and the level of its sensor.
Microelectromechanical systems (MEMS) technology of coming from the SIC (semiconductor integrated circuit) technical development is day by day ripe, utilize this technology can make various microsensors, volume and the energy consumption of these sensors are little, can realize many brand-new functions, be convenient in enormous quantities and made with high precision, cost per unit is low, easily consists of extensive and multifunctional array, is highly suitable on automobile and uses.
Because the MEMS sensor has irreplaceable advantage, traditional pressure sensor for automobile will progressively be replaced by it.MEMS Lubricant of Automobile Engine and abs pressure sensor are by the domestic cumulative year after year of current needs, maturation along with domestic MEMS car force sensor technology, having the MEMS pressure transducer of the characteristics such as microminiaturization, low-power consumption, high sensitivity, high reliability, will be the focus of Global Auto transducer market product demand.
At present, can provide automobile MEMS pressure transducer mainly take offshore company as main, the companies such as U.S. Kai Leer, extraordinary measurement, SSI, Fei Erke, Texas Instrument, German Bosch, Japan electric coating are arranged, annual production is more than 2,000,000.The automobile MEMS pressure transducer of the international renowned company Development and Production such as external Motorola, Infineon, GE adopts folded silicon technology mostly, the technologies such as bulk silicon technological, have highly sensitive, the precision high, range 50 to 1400KPa, precision 0.03%FS, but also have in some aspects complex manufacturing technology, high-precision capacitance pressure transducer, easily is subjected to environmental interference, and the problem such as easily is subject to disturbing between the pollution of environment and many signals.
As shown in Figure 1, the outside need of the interconnect of the MEMS pressure transducer of prior art is connected with switching piece, adopts between switching piece and web member at present to be welded to connect, and complex process is not easy to realize.
The utility model content
The purpose of this utility model is to provide a kind of switching piece hermetically-sealed construction machine oil MEMS pressure transducer, solves to adopt between sensor switching piece and web member to be welded to connect the problem of complex process.
The purpose of this utility model is to be achieved through the following technical solutions:
A kind of switching piece hermetically-sealed construction machine oil MEMS pressure transducer, comprise housing, web member, web member is positioned at the inside of housing, inboard at described web member is provided with permanent magnets, described permanent magnets is fixed on the inside of web member, and described permanent magnets is structure in the form of a ring, the outside of described web member is provided with switching piece, the medial surface of described switching piece is provided with insulation course, switching piece is by the permeability magnetic material manufacturing, make described switching piece be adsorbed on the outside of web member due to magnetic, but due to the existence of insulation course, can make between web member and switching piece non-conductive.
The utility model is by being connected adsorbing by magnetic between web member and switching piece, can the wall welding technology, after also can preventing from welding due to the aging use problem that produces.
Description of drawings
The below is described in further detail the utility model according to drawings and embodiments.
Fig. 1 is the structural drawing of prior art engine oil pressure pickup.
Fig. 2 is the structural drawing of the described switching piece hermetically-sealed construction of the utility model embodiment machine oil MEMS pressure transducer.
Embodiment
as shown in Figure 2, the described switching piece hermetically-sealed construction of the utility model embodiment machine oil MEMS pressure transducer, comprise housing 1, web member 2, web member 2 is positioned at the inside of housing 1, be provided with permanent magnets 21 in the inboard of described web member 2, described permanent magnets 21 is fixed on the inside of web member 2, and described permanent magnets 21 is structure in the form of a ring, the outside of described web member 2 is provided with switching piece 3, the medial surface of described switching piece 3 is provided with insulation course 31, switching piece 3 is by the permeability magnetic material manufacturing, make described switching piece 3 be adsorbed on the outside of web member 2 due to magnetic, but the existence due to insulation course, can make between web member 2 and switching piece 3 non-conductive.
The utility model is by being connected adsorbing by magnetic between web member and switching piece, can the wall welding technology, after also can preventing from welding due to the aging use problem that produces.
Claims (1)
1. switching piece hermetically-sealed construction machine oil MEMS pressure transducer, it is characterized in that, comprise housing, web member, web member is positioned at the inside of housing, is provided with permanent magnets in the inboard of described web member, described permanent magnets is fixed on the inside of web member, and described permanent magnets is structure in the form of a ring, and the outside of described web member is provided with switching piece, and the medial surface of described switching piece is provided with insulation course, switching piece makes described switching piece be adsorbed on the outside of web member due to magnetic by the permeability magnetic material manufacturing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220740719 CN203011613U (en) | 2012-12-31 | 2012-12-31 | Machine oil MEMS pressure sensor based on adapter piece sealing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220740719 CN203011613U (en) | 2012-12-31 | 2012-12-31 | Machine oil MEMS pressure sensor based on adapter piece sealing structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203011613U true CN203011613U (en) | 2013-06-19 |
Family
ID=48603196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220740719 Expired - Lifetime CN203011613U (en) | 2012-12-31 | 2012-12-31 | Machine oil MEMS pressure sensor based on adapter piece sealing structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203011613U (en) |
-
2012
- 2012-12-31 CN CN 201220740719 patent/CN203011613U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Lv Miao Inventor after: Sun Haixin Inventor after: Ni Xingping Inventor before: Zheng Shiliang |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: ZHENG SHILIANG TO: LV MIAO SUN HAIXIN NI XINGPING |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130619 |
|
| CX01 | Expiry of patent term |