CN103344380A - Anti-freezing ceramic pressure sensor packaging piece - Google Patents
Anti-freezing ceramic pressure sensor packaging piece Download PDFInfo
- Publication number
- CN103344380A CN103344380A CN2013102336934A CN201310233693A CN103344380A CN 103344380 A CN103344380 A CN 103344380A CN 2013102336934 A CN2013102336934 A CN 2013102336934A CN 201310233693 A CN201310233693 A CN 201310233693A CN 103344380 A CN103344380 A CN 103344380A
- Authority
- CN
- China
- Prior art keywords
- core body
- pressure sensor
- ceramic
- rubber ring
- ceramic core
- 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
Links
Images
Abstract
The invention discloses an anti-freezing ceramic pressure sensor packaging piece which comprises a hydraulic port, a packaging shell, a rubber ring, a circuit chip, a packaging cover, a ceramic core body and a seal ring. The hydraulic port is connected with the packaging shell, the inner side of the hydraulic port is connected with the rubber ring, the hydraulic port is connected with the ceramic core body through the seal ring, the rubber ring is connected between the ceramic core body and the packaging cover, the ceramic core body is in fixed mechanical connection with the circuit chip, and the packaging shell is connected with the packaging cover. Through optimized combination in structure, the anti-freezing ceramic pressure sensor packaging piece enables a sensor to have anti-freezing and anti-solidification volume expansion capacity in a certain degree, overcomes the defect that the ceramic pressure sensor is poor in size expansion prevention performance, and effectively improves survivability of the ceramic pressure sensor in severe conditions.
Description
Technical field
The present invention relates to sensor technical field, particularly relate to a kind of freeze proof ceramic pressure sensor encapsulation.
Background technology
Ceramic pressure sensor is to adopt special ceramic material, through the refining pressure drag type pressure sensor that forms of special process.Stupalith has anti-strong corrosion, and to the temperature rapid heat dissipation, elasticity is very good, and insulativity is very good, and therefore the ceramic pressure sensor that processes has special high-performance.The ceramic sensor element of high-performance, low price will be the developing direction of pressure transducer.Increasing user uses ceramic pressure sensor to substitute other type pressure sensor and traditional mechanical elasticity body pressure original papers such as diffuse si.Ceramic pressure sensor is widely used in: equipment control, servo-valve and transmission, chemicals and various fields such as chemical industry and medical instrument such as water pump, diesel engine, air compressor machine, refrigeration machine, ink jet numbering machine, water heater and wall hanging stove.
Ceramic pressure sensor is be widely used in each field a kind of for a kind of sensing element of measuring fluid media (medium), but because working environment and other factor affecting, in some cases, metamorphosis can take place in measuring media, as freezing or solidifying etc., and cause integral body or local volume expansion, exceed the sensor tolerance range and produce infringement and lost efficacy.
Summary of the invention
Technical matters to be solved by this invention is that the ceramic pressure sensor a kind of anti-freezing or that the medium coagulated volume expands that proposes at above-mentioned prior art defective encapsulates.
The technical matters that the present invention requires to solve can be achieved through the following technical solutions:
A kind of freeze proof ceramic pressure sensor encapsulation, comprise fluid power interface, encapsulating shell, rubber ring, circuit chip, cap, ceramic core body and O-ring seal, described fluid power interface is connected with encapsulating shell, the inboard of fluid power interface links to each other with rubber ring, the fluid power interface links to each other by O-ring seal with ceramic core body, be connected with rubber ring between described ceramic core body and the cap, ceramic core body is connected with the circuit chip solid mechanical, and described encapsulating shell links to each other with cap.
Described fluid power interface and encapsulating shell are metal material or plastic material, and the fluid power interface is connected for rigidly fixing with encapsulating shell.
Described encapsulating shell is connected for being rigidly connected or floating with cap.
The cylindrical rubber circle is equipped with in described fluid power interface inboard, and fluid power interface and rubber ring are connected.
Between described ceramic core body and the cap annular rubber ring is housed, circuit chip carries out solid mechanical with ceramic core body and is connected, pottery core body, circuit chip and rubber ring form a space, the solid mechanical coupling part of circuit chip and ceramic core body is in this space, and described ceramic core body, cap are connected with the rubber ring fitted seal.
Described ceramic core body is that fitted seal is connected with O-ring seal.
Beneficial effect of the present invention is: a kind of freeze proof ceramic pressure sensor encapsulation, optimal combination by structure aspects, freezing, coagulated volume swelling capacity that sensor is acquired a certain degree, overcome the shortcoming of the long-pending swelling capacity fragility of ceramic pressure sensor antibody, improved the viability of ceramic pressure sensor under this special type mal-condition effectively.
Description of drawings
The present invention will be further described below in conjunction with the drawings and specific embodiments:
Fig. 1 is ceramic pressure sensor encapsulation sectional view of the present invention.
Embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Describe the present invention in detail below with reference to Fig. 1, the present invention mainly includes: fluid power interface 1, encapsulating shell 2, rubber ring 3, circuit chip 4, cap 5, ceramic core body 6, O-ring seal 7, rubber ring 8, space 9, space 10, space 11 and space 12.Described fluid power interface 1 all is metal material with encapsulating shell 2, and both are for rigidly fixing connection, and cylindrical rubber circle 8 is equipped with in the inboard of fluid power interface, and fluid power interface 1 and rubber ring 8 are for being connected.Be connected with annular rubber ring 3 between described ceramic core body 6 and the cap 5, the pottery core body carries out solid mechanical with circuit chip 4 and is connected, pottery core body 6, rubber ring 3 and the circuit chip 4 inner spaces 12 that form, the solid mechanical coupling part of pottery core body and circuit chip is in space 12, and ceramic core body, cap are connected with the rubber ring fitted seal.Encapsulating shell 2 is connected for being rigidly connected or floating with cap 5.Pottery core body 6 and 1 fluid power interface are equipped with a grommet type seals 7, and ceramic core body 6, fluid power interface 1 and O-ring seal 7 are connected for fitted seal.
Ceramic pressure sensor inside comprises 4 spaces: rubber ring 8 inner spaces 9, the space 10 that fluid power interface 1 and ceramic core body form, the space 11 that cap 2 and ceramic core body 6 form, and the space 12 of ceramic core body 6, rubber ring 3 and circuit chip 4 formation.
During concrete operations, if space 10 prior to or 9 solidify in the space simultaneously because volumetric expansion, unnecessary fluid can reflux by space 9, so can not occur under this kind situation acting on the too high situation of ceramic core body upward pressure, need not to do more protectiveness designs; Solidify if space 10 is later than space 9, be blocked because pressure passageway is rushed down in backflow, space 10 meeting volumetric expansions with fluid solidifies, pressure rise, and promote the acting force that ceramic core body 6 moves dorsad thereby produce; Owing to there is the characteristic rubber ring 3 with elastic deformation, compressed by the power transmission of ceramic core body, thereby deformation and carry out the expanding volume compensation stops the further rising of space 10 internal pressures, with its control in safe range.Owing to reasons such as medium or environment, tend to be created in the sealing function inefficacy at O-ring seal 7 positions, cause the leakage of fluid media (medium) and enter space 11, because the existence of structure 3 rubber rings, this moment, it can bring into play the effect of O-ring seal, can stop fluid media (medium) infiltration of 12 to the space, thereby guaranteed the safety of ceramic induction part and amplifying circuit in the space 12, guarantee that sensor is having under the situation of leakage, also can guarantee correct signal transmission.The sealing circle is a kind of self-locking design in addition, and namely pressure is more big, and the sealing pretightning force that acts on structure 3 rubber rings is more big, and sealing property is more strong.
More than show and described ultimate principle of the present invention, principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in above-described embodiment and the instructions just illustrates principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (6)
1. freeze proof ceramic pressure sensor encapsulation, it is characterized in that: comprise fluid power interface, encapsulating shell, rubber ring, circuit chip, cap, ceramic core body and O-ring seal, described fluid power interface is connected with encapsulating shell, the inboard of fluid power interface links to each other with rubber ring, the fluid power interface links to each other by O-ring seal with ceramic core body, be connected with rubber ring between described ceramic core body and the cap, ceramic core body is connected with the circuit chip solid mechanical, and described encapsulating shell links to each other with cap.
2. according to the described a kind of freeze proof ceramic pressure sensor encapsulation of claim 1, it is characterized in that: described fluid power interface and encapsulating shell are metal material or plastic material, and the fluid power interface is connected for rigidly fixing with encapsulating shell.
3. according to the described a kind of freeze proof ceramic pressure sensor encapsulation of claim 1, it is characterized in that: described encapsulating shell is connected for being rigidly connected or floating with cap.
4. according to the described a kind of freeze proof ceramic pressure sensor encapsulation of claim 1, it is characterized in that: the cylindrical rubber circle is equipped with in described fluid power interface inboard, and fluid power interface and rubber ring are connected.
5. according to the described a kind of freeze proof ceramic pressure sensor encapsulation of claim 1, it is characterized in that: between described ceramic core body and the cap annular rubber ring is housed, circuit chip carries out solid mechanical with ceramic core body and is connected, pottery core body, circuit chip and rubber ring form a space, the solid mechanical coupling part of circuit chip and ceramic core body is in this space, and described ceramic core body, cap are connected with the rubber ring fitted seal.
6. according to the described a kind of freeze proof ceramic pressure sensor encapsulation of claim 1, it is characterized in that: described ceramic core body is that fitted seal is connected with O-ring seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102336934A CN103344380A (en) | 2013-06-13 | 2013-06-13 | Anti-freezing ceramic pressure sensor packaging piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013102336934A CN103344380A (en) | 2013-06-13 | 2013-06-13 | Anti-freezing ceramic pressure sensor packaging piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103344380A true CN103344380A (en) | 2013-10-09 |
Family
ID=49279195
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013102336934A Pending CN103344380A (en) | 2013-06-13 | 2013-06-13 | Anti-freezing ceramic pressure sensor packaging piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103344380A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105823708A (en) * | 2015-01-08 | 2016-08-03 | 上海朝辉压力仪器有限公司 | Density transducer |
| CN108827529A (en) * | 2018-06-05 | 2018-11-16 | 无锡莱顿电子有限公司 | Anti-freezing structure |
| CN109387322A (en) * | 2017-08-08 | 2019-02-26 | 罗伯特·博世有限公司 | Pressure sensor and method for manufacturing pressure sensor |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1194671A (en) * | 1997-09-16 | 1999-04-09 | Yokogawa Electric Corp | Pressure sensor |
| DE10340075A1 (en) * | 2003-08-30 | 2005-03-24 | Hydraulik-Ring Gmbh | Pressure sensor for an exhaust gas reduction system, especially for a diesel, has an additional compressible volume between the reducing medium supply line and a pressure measurement cell to absorb volume changes due to freezing |
| CN101611299A (en) * | 2006-12-20 | 2009-12-23 | 埃尔特克公开有限公司 | Pressure sensor apparatus |
| CN202305093U (en) * | 2011-10-28 | 2012-07-04 | 芜湖通和汽车管路系统有限公司 | Hydraulic sensor |
| CN202533211U (en) * | 2012-04-01 | 2012-11-14 | 无锡盛邦电子有限公司 | Urea pressure detection apparatus for diesel vehicle SCR system |
| CN102865965A (en) * | 2012-09-20 | 2013-01-09 | 芜湖通和汽车管路系统有限公司 | Hydraulic sensor |
| CN203385509U (en) * | 2013-06-13 | 2014-01-08 | 安徽艾可蓝节能环保科技有限公司 | Antifreezing packaging for ceramic pressure sensor |
-
2013
- 2013-06-13 CN CN2013102336934A patent/CN103344380A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1194671A (en) * | 1997-09-16 | 1999-04-09 | Yokogawa Electric Corp | Pressure sensor |
| DE10340075A1 (en) * | 2003-08-30 | 2005-03-24 | Hydraulik-Ring Gmbh | Pressure sensor for an exhaust gas reduction system, especially for a diesel, has an additional compressible volume between the reducing medium supply line and a pressure measurement cell to absorb volume changes due to freezing |
| CN101611299A (en) * | 2006-12-20 | 2009-12-23 | 埃尔特克公开有限公司 | Pressure sensor apparatus |
| CN202305093U (en) * | 2011-10-28 | 2012-07-04 | 芜湖通和汽车管路系统有限公司 | Hydraulic sensor |
| CN202533211U (en) * | 2012-04-01 | 2012-11-14 | 无锡盛邦电子有限公司 | Urea pressure detection apparatus for diesel vehicle SCR system |
| CN102865965A (en) * | 2012-09-20 | 2013-01-09 | 芜湖通和汽车管路系统有限公司 | Hydraulic sensor |
| CN203385509U (en) * | 2013-06-13 | 2014-01-08 | 安徽艾可蓝节能环保科技有限公司 | Antifreezing packaging for ceramic pressure sensor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105823708A (en) * | 2015-01-08 | 2016-08-03 | 上海朝辉压力仪器有限公司 | Density transducer |
| CN109387322A (en) * | 2017-08-08 | 2019-02-26 | 罗伯特·博世有限公司 | Pressure sensor and method for manufacturing pressure sensor |
| CN108827529A (en) * | 2018-06-05 | 2018-11-16 | 无锡莱顿电子有限公司 | Anti-freezing structure |
| CN108827529B (en) * | 2018-06-05 | 2024-01-12 | 无锡莱顿电子有限公司 | Anti-freezing structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203385509U (en) | Antifreezing packaging for ceramic pressure sensor | |
| CN103344380A (en) | Anti-freezing ceramic pressure sensor packaging piece | |
| CN205683662U (en) | A kind of filter with frost-cracking-preventing function | |
| CN204439272U (en) | A kind of defroster of pressure transducer | |
| CN101082407A (en) | Air bag auxiliary seal of underwater lamp | |
| CN201450385U (en) | Shell structure of a motor | |
| CN203614874U (en) | Electromagnetic valve assembly for vehicles | |
| CN103344784B (en) | Temperature control type magnetic liquid acceleration sensor | |
| CN208432280U (en) | A kind of sensor with anti-freezing structure | |
| CN206161224U (en) | Gas pressure temperature sensor | |
| CN203172712U (en) | Ventilation device for automobile electric power steering system | |
| CN205562111U (en) | Vacuum servo system sensor of integrated check valve | |
| CN105305327B (en) | A kind of low pressure cable sealing device and its manufacture method | |
| CN103486308B (en) | A kind of used at ultra-low temperature vacuum protective valve | |
| CN202002542U (en) | Automobile heat radiator water chamber and water inlet and outlet pipe combined sealing connector | |
| CN203499836U (en) | Cylinder body pipeline connecting device and engine cylinder body | |
| CN205978794U (en) | Heavy -calibre is water meter controller valve seal structure in pit | |
| CN102628524A (en) | Valve stem sealing device | |
| CN202483747U (en) | Independent one-piece water-channel type compressed natural gas (CNG) pressure reducing regulator applied to automobile | |
| CN108692769A (en) | A kind of temperature pressure combinations sensor | |
| CN205047398U (en) | Automatic drainer | |
| CN208903923U (en) | Liquid-level switch suitable for a variety of liquid depths | |
| CN203363400U (en) | Axial sealing device | |
| CN206638383U (en) | A kind of high temperature resistant type pressure sensor | |
| CN201421342Y (en) | Temperature-compensated composite flow transmitter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20131009 |