CN2035881U - Corrugated pipe silicone-diffused isolating and protecting device for force sensor - Google Patents
Corrugated pipe silicone-diffused isolating and protecting device for force sensor Download PDFInfo
- Publication number
- CN2035881U CN2035881U CN 88216778 CN88216778U CN2035881U CN 2035881 U CN2035881 U CN 2035881U CN 88216778 CN88216778 CN 88216778 CN 88216778 U CN88216778 U CN 88216778U CN 2035881 U CN2035881 U CN 2035881U
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- type structure
- protecting device
- force sensor
- stem
- bellows
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Abstract
The utility model provides an isolation protection device which can be used for diffusion silicon force sensitive sensors of various ranges. The isolation protection device changes over the existing diaphragm type structure of an isolation body into a bellows-type structure. An enclosed cavity formed between the isolation body with the bellows-type structure is filled with pressure transmitting medium. The utility model which has the advantages of easy process, low cost and long service life can effectively overcome the non-linearity caused by the 'string type' variation of the existing diaphragm, evidently decrease the integral dimension of the sensor and reduce manufacturing cost.
Description
The utility model relates to a kind of isolating and protecting device that can be used for the force sensor of diffused silicon of various ranges.
The isolating and protecting device (as Fig. 3) that existing force sensor of diffused silicon is used, utilize be assembled in the isolated body on the silicon cup seat and be full of isolated body with the silicon cup seat between the pressure transmitting medium formation of enclosed cavity.Used isolated body adopts and has corrugated diaphragm type structure, the diaphragm of this spline structure, and the stress of its center and peripheral is different, mechanical characteristic is " string formula " basically to be changed, and the linearity output of force sensor of diffused silicon is affected.For overcoming non-linear output, diaphragm diameter must be tried one's best greatly, and thickness is thin as far as possible, simultaneously diaphragm is processed the corrugated of special shape.Because diaphragm diameter is big more, causes sensor bulk also big more; Diaphragm thickness is thin more, difficult more processing, and the stress of postwelding is not easy to eliminate more, and serviceable life is short more.These above-mentioned shortcomings are obvious especially for the diaphragm in the small range sensors, and especially processing has a corrugated diaphragm of special shape, selecting material design requirement aspect processing technology very high, increase manufacturing cost easily.Therefore, new easy processing, the cost of development is low.The force sensor of diffused silicon isolating and protecting device of long service life has become and has pressed for the problem of solution.
The purpose of this utility model is the isolating and protecting device of a kind of improved force sensor of diffused silicon of proposing at the deficiency of said structure." string " that it can overcome existing diaphragm type structure effectively changes cause non-linear, reduces the physical dimension of whole sensor significantly, improves the resistance to corrosion and the serviceable life of isolating and protecting device.
The purpose of this utility model is achieved in that this device is with the isolated body of the diaphragm type structure in the isolating and protecting device of existing force sensor of diffused silicon, changes into the bellows-type structure.The enclosed cavity that forms between the isolated body of bellows-type structure and silicon cup seat is full of pressure transmitting medium.This isolating and protecting device is processed easily, low cost of manufacture, and long service life, its reason are that the corrugated tube mechanical characteristic is relatively good, are linear change basically, " the string formula " that can overcome existing diaphragm effectively changes cause non-linear; The corrugated tube diameter dimension can be done very greatly, because of its diameter less, so the overall dimensions of sensor also reduces significantly thereupon; The corrugated tube tube wall is much thicker than diaphragm, and its physical strength, corrosion resistance are all than diaphragm height; Corrugated tube raw material source is abundant, and it shapes needn't particular design, so can reduce manufacturing cost.
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is a kind of concrete structure longitudinal sectional view of the utility model.
Fig. 2 is the longitudinal sectional view that the utility model has moving stem stem structure.
Fig. 3 is the diaphragm type structure isolating and protecting device synoptic diagram of prior art.
Describe concrete structure of the present utility model in detail according to Fig. 1～3.This device adopts the corrugated tube 5 of good springiness as isolated body, corrugated tube 5 welded by welding junction 3 be assembled with on the silicon cup seat 1 of silicon cup 2, in the enclosed cavity of forming formation between corrugated tube 5, welding junction 3 and the silicon cup seat 1 of one, be full of pressure transmitting medium, as silicone oil etc.Protective cover 6 plays protection corrugated tube 5, and itself and silicon cup seat 1 are fitted together.After corrugated tube 5 stressed effects, by pressure transmitting medium power is delivered on the silicon cup 2, finish insulation blocking effect to silicon cup 2.For reducing the pressure transmitting medium of filling, a stem stem 4 can be set in corrugated tube 5, this stem stem 4 all welds on welding junction 3 with corrugated tube 5.To needing the sensor of overload protection, also stem stem 4 can be made to decide into stem stem 7 and moving stem stem 8.Decide stem stem 7 and all weld on welding junction 3 with corrugated tube 5, moving stem stem 8 welds on corrugated tube 5 upper end inside surfaces, and makes stem stem 8 and the surface in contact centering of deciding stem stem 7, and it is consistent to coincide when contacting.When the stressed effect deformation of corrugated tube 5, moving stem stem 8 move with corrugated tube 5, until only touching when deciding stem stem 7.Moving stem stem 8 and the gap length of deciding 7 of stem stems should be determined according to actual needs.
Claims (1)
1, a kind of bellows-type force sensor of diffused silicon isolating and protecting device, comprise be assembled in the isolated body on the silicon cup seat and be full of isolated body and the silicon cup seat between the pressure transmitting medium of enclosed cavity, it is characterized in that isolated body adopts the bellows-type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88216778 CN2035881U (en) | 1988-08-16 | 1988-08-16 | Corrugated pipe silicone-diffused isolating and protecting device for force sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 88216778 CN2035881U (en) | 1988-08-16 | 1988-08-16 | Corrugated pipe silicone-diffused isolating and protecting device for force sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2035881U true CN2035881U (en) | 1989-04-12 |
Family
ID=4849369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 88216778 Withdrawn CN2035881U (en) | 1988-08-16 | 1988-08-16 | Corrugated pipe silicone-diffused isolating and protecting device for force sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2035881U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251946B (en) * | 2008-04-16 | 2011-04-13 | 江苏百华电子有限公司 | Automatic monitoring instrument for living environment harmful gas |
| CN105699000A (en) * | 2014-11-28 | 2016-06-22 | 重庆四联测控技术有限公司 | Manufacturing method for asymmetric ripple pressure transmission assembly |
| CN109416290A (en) * | 2016-04-22 | 2019-03-01 | 埃尔特克有限公司 | Sensor device, especially pressure sensor |
-
1988
- 1988-08-16 CN CN 88216778 patent/CN2035881U/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251946B (en) * | 2008-04-16 | 2011-04-13 | 江苏百华电子有限公司 | Automatic monitoring instrument for living environment harmful gas |
| CN105699000A (en) * | 2014-11-28 | 2016-06-22 | 重庆四联测控技术有限公司 | Manufacturing method for asymmetric ripple pressure transmission assembly |
| CN109416290A (en) * | 2016-04-22 | 2019-03-01 | 埃尔特克有限公司 | Sensor device, especially pressure sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |