CN203811316U - Pressure sensor - Google Patents
Pressure sensor Download PDFInfo
- Publication number
- CN203811316U CN203811316U CN201420040844.4U CN201420040844U CN203811316U CN 203811316 U CN203811316 U CN 203811316U CN 201420040844 U CN201420040844 U CN 201420040844U CN 203811316 U CN203811316 U CN 203811316U
- Authority
- CN
- China
- Prior art keywords
- pressure
- shielding cover
- magnetic shielding
- electro
- end member
- 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
- 238000007789 sealing Methods 0.000 claims abstract description 30
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 238000005452 bending Methods 0.000 claims description 6
- 238000009413 insulation Methods 0.000 claims description 5
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 description 7
- 239000000565 sealant Substances 0.000 description 7
- 238000004026 adhesive bonding Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Abstract
The utility model discloses a pressure sensor which includes a pressure end member (10). A cylindrical cup body (11) which is arranged on the upper part of the pressure end member (10) is connected to an electrical connective end member (1). A lower edge of the cylindrical cup body (11) extends inwardly to form a bottom wall. The pressure sensor also includes a pressure sensing element (4) which is contained in the cylindrical cup body (11) and a sealing ring (5) which is arranged below the pressure sensing element (4), wherein peripheries of the pressure sensing element (4) and the sealing ring (5) are tightly covered by an electromagnetic shielding cover (6). An upper edge of a circumferential edge wall of the electromagnetic shielding cover (6) is not bent inwardly in a radial direction. The upper edge of the cylindrical cup body (11) is bent inwardly in a radial direction to form a pressing connection with an external connective flange on a lower end of the electrical connective end member (1). Production technology of the pressure sensor is greatly simplified and production time cost and manual labor cost is greatly reduced. Compared with a pressure sensor in the prior art, the pressure sensor in the utility model is significantly reduced in total size.
Description
Technical field
The utility model relates to a kind of pressure transducer, and this pressure transducer can be in a lot of devices, such as heating arrangement of described device; Ventilation unit; Aircondition, especially frequency converting air conditioner.The utility model relates in particular to a kind of HVAC(Heating, Ventilation & Air Conditioning) pressure transducer.
Background technology
Existing HVAC pressure transducer comprises pressure end member, the top of described pressure end member has cylindrical shape cup, the upper end of described cylindrical shape cup is connected with electrical connection terminal member, is contained in the pressure-sensing device in described cylindrical shape cup, below described electrical connection terminal member; Be contained in the O-ring seal that described cylindrical shape cup is interior, be closely arranged in described pressure-sensing device below; Wherein, described pressure-sensing device and described O-ring seal by an electro-magnetic shielding cover (also referred to as " inner cap ", it is generally made of metal, for example made by stainless steel) closely surround, it is roughly cup-shaped that described electro-magnetic shielding cover is, bottom surface is provided with opening, thereby the coboundary of the peripheral wall of described electro-magnetic shielding cover radially bends inwards and forms the connection seam of reduced, the connection seam that the coboundary of described electro-magnetic shielding cover forms forms to compress with the outside flange connector of described electrical connection terminal member lower end and is connected.
In the above-mentioned arrangement of prior art, need to carry out " riveting " step, that is: the coboundary of described electro-magnetic shielding cover is radially bent inwards, compress connection seam on the outside flange connector that is connected to described electrical connection terminal member lower end, reduced thereby form.
Above-mentioned " riveting " step certainly will make the whole periphery of the connection seam of the reduced of described electro-magnetic shielding cover (it is generally made up of metals such as stainless steels) form gap in process.Thereby for sensitive element protected in sensor being made it to not can normally work for a long time by the erosion of actuating medium or surrounding material, must be sealed these gaps.So, also need another " gluing " step, that is: be coated with fluid sealant (generally can adopt silica gel) at the connection stop portion of accordion, so that gap is wherein sealed.
Above-mentioned " riveting " step and " gluing " step are very consuming time in the manufacturing process of pressure transducer, take suitable time cost and human cost.In addition, the overall dimension of made pressure transducer (especially along its axial height) is larger, and the installing space that need to take is also corresponding larger.
Utility model content
Because the technical elements having much room for improvement existing in above-mentioned prior art, the purpose of this utility model is to provide a kind of pressure transducer that can simplify its manufacturing process, reduce its manufacturing cost.
For achieving the above object, in a basic technical scheme of the present utility model, a kind of pressure transducer is provided, described pressure transducer comprises: pressure end member, the top of described pressure end member has cylinder cup, and the upper end of described cylindrical shape cup is connected with electrical connection terminal member; Be contained in the pressure-sensing device in described cylindrical shape cup, below described electrical connection terminal member; Be contained in the O-ring seal that described cylindrical shape cup is interior, be closely arranged in described pressure-sensing device below; Of the present utility model being characterised in that: described pressure-sensing device and described O-ring seal are closely surrounded by electro-magnetic shielding cover, it is roughly cup-shaped that described electro-magnetic shielding cover is, and the coboundary of the peripheral wall of described electro-magnetic shielding cover does not radially curve inwardly; The coboundary of described cylindrical shape cup radially curves inwardly, and forms to compress to be connected with the outside flange connector of described electrical connection terminal member lower end.
Adopt above-mentioned basic technical scheme of the present utility model, can save above-mentioned " riveting " of the prior art step, and thereby can correspondingly shorten the activity duration in follow-up " gluing " step, production technology is greatly simplified, and production time cost and human cost greatly reduce.
Adopt above-mentioned basic technical scheme of the present utility model, can make the probability that produces bubble in fluid sealant greatly reduce, thereby the time span that correspondingly fluid sealant is applied to technique shortens greatly.
In addition, adopt the overall dimension (especially along its axial height) of the made pressure transducer of above-mentioned basic technical scheme of the present utility model to have obvious reducing with respect to the overall dimension of prior art, thereby correspondingly reduce required installing space, make to adopt the installation difficulty of the made pressure transducer of above-mentioned basic technical scheme of the present utility model to reduce, and make its range of application can obtain expansion.
Brief description of the drawings
Below in conjunction with accompanying drawing, various exemplary optimal ways of the present utility model are made and being further illustrated.
Fig. 1 is cut-open view, schematically illustrated general structure of the present utility model.
Fig. 2 is the exploded perspective schematic diagram of all parts in Fig. 1.
Embodiment
As shown in drawings, in a basic embodiment of the present utility model, a kind of pressure transducer is provided, described pressure transducer comprises: pressure end member 10(industry is also referred to as " pressure end shell "), the top of described pressure end member 10 has cylindrical shape cup 11, and the upper end of described cylindrical shape cup 11 is connected with electrical connection terminal member 1; This pressure-sensing device 4 of pressure-sensing device 4(being contained in described cylindrical shape cup 11, below described electrical connection terminal member 1 can be made with for example stupalith); Be contained in the O-ring seal 5 that described cylindrical shape cup 11 is interior, be closely arranged in described pressure-sensing device 4 belows; Wherein: described pressure-sensing device 4 and described O-ring seal 5 are closely surrounded by electro-magnetic shielding cover 6, described electro-magnetic shielding cover 6 is roughly cup-shaped, and the coboundary of described electro-magnetic shielding cover 6 does not radially curve inwardly; The coboundary of described cylindrical shape cup 11 radially bends inwards, and forms to compress to be connected with the outside flange connector of described electrical connection terminal member 1 lower end.
Adopt above-mentioned basic embodiment of the present utility model, can save above-mentioned " riveting " of the prior art step, and thereby can correspondingly shorten the activity duration in follow-up " gluing " step, production technology is greatly simplified, can (for example shorten widely the production time, can be foreshortened to 50% left and right of the production cycle of prior art the production cycle), and also make corresponding human cost greatly reduce.
In addition, adopt the overall dimension of the made pressure transducer of above-mentioned basic embodiment of the present utility model (especially along its axial height, vertical direction in Fig. 1 is exactly the axial direction of pressure transducer) there is obvious reducing with respect to the overall dimension of prior art, thereby correspondingly reduce required installing space, make to adopt the installation difficulty of the made pressure transducer of above-mentioned basic embodiment of the present utility model to reduce, and make its range of application can obtain expansion.
In preferred embodiments more of the present utility model, between the cylindrical shape cup 11 of pressure end member 10 described electro-magnetic shielding cover 6 and described, be also provided with insulating boot 7, the coboundary of described insulating boot 7 radially curves inwardly to form bending coated portion, and the coated portion of described bending is being coated the coboundary of described electro-magnetic shielding cover 6.
As shown in Figure 1, in preferred embodiments more of the present utility model, the inward flange of the connection seam that can radially bend inwards formed at the coboundary of described cylindrical shape cup 11 applies environmental sealing glue 2.
In preferred embodiments more of the present utility model, described O-ring seal 5 is composite structure, it comprises the rubber ring that is flat ring-type, is coated with the becket that is flat ring-type in described rubber ring, and the external diameter of the external diameter of described rubber ring and described pressure-sensing device 4 is roughly the same.
As shown in Figure 1, in preferred embodiments more of the present utility model, the central authorities of the base wall of described electro-magnetic shielding cover 6 are provided with opening.
As shown in Figure 1, in preferred embodiments more of the present utility model, the below at the cup end of described electro-magnetic shielding cover 6 is provided with its stereographic map of sealing ring 9(can be referring to Fig. 2), sealing ring 9 was pressed at the cup end of electro-magnetic shielding cover 6 and glass end of pressure end member 10.
As shown in Figure 1, in preferred embodiments more of the present utility model, the base wall of described pressure end member 10 is provided with its stereographic map of sealing ring stop lug 12(can be referring to Fig. 2), described sealing ring stop lug 12 is upwards extended from the base wall of described pressure end member 10, so that the internal edge next-door neighbour with described sealing ring 9, thereby the position of the inner peripheral of described sealing ring 9 is fixed, can prevent that sealing ring from inwardly shrinking under harsh media environment, thereby guarantee sealing effectiveness, improve serviceable life.
In preferred embodiments more of the present utility model, the periphery of described sealing ring 9 is also provided with insulation spacer 8, described insulation spacer 8 is fixed the position of the outer peripheral edges of described sealing ring 9, thereby the radial and axial decrement of described sealing ring (9) is fixed, and plays insulating effect.
The dual fixed form that adopts " sealing ring stop lug 12 " and " insulation spacer 8 ", can make the radial position of sealing ring 9 and axial compression amount are completely fixed, thereby ensure very reliably its sealing effectiveness.
In preferred embodiments more of the present utility model, distance between the coboundary of the cylindrical shape cup 11 of described pressure end member 10 and the base wall of described pressure end member 10 and the height of described electro-magnetic shielding cover 6 are set to: thus described sealing ring 9 is pressed on to formation tight seal between the base wall of described electro-magnetic shielding cover 6 and the base wall of pressure end member 10, thereby O-ring seal 5 is pressed on to formation tight seal between the base wall of pressure-sensing device 4 and the bottom interior wall of electro-magnetic shielding cover 6, and the coboundary that makes described electro-magnetic shielding cover 6 is pressed on the lower surface of the part that radially curves inwardly of the coboundary of described cylindrical shape cup 11, connect thereby form closely.This arrangement, can make the probability that produces bubble in fluid sealant greatly reduce, thereby the time span that correspondingly fluid sealant is applied to technique shortens greatly.
As shown in Figure 1, in preferred embodiments more of the present utility model, between the peripheral wall of described electro-magnetic shielding cover 6 and the cylindrical shape cup 11 of described pressure end member 10, being also provided with its stereographic map of insulating boot 7(can be referring to Fig. 2), and the distance between the coboundary of the cylindrical shape cup 11 of described pressure end member 10 and the base wall of described pressure end member 10 is set to: described sealing ring 9 is pressed on to the base wall of described electro-magnetic shielding cover 6 and described pressure end member (10) thus base wall between form tight seal, thereby O-ring seal 5 is pressed on to formation tight seal between the bottom of pressure-sensing device 4 and the bottom interior wall of electro-magnetic shielding cover 6, and the coboundary that makes described electro-magnetic shielding cover 6 is pressed on the lower surface of the coated portion of formed bending that radially curves inwardly of the coboundary of described insulating boot 7, thereby formation tight seal.This arrangement, still can make the probability that produces bubble in fluid sealant greatly reduce, thereby the time span that correspondingly fluid sealant is applied to technique shortens greatly.And insulating boot 7 has further ensured the serviceability of pressure transducer of the present utility model.
As shown in Figure 1, in preferred embodiments more of the present utility model, above pressure-sensing device 4, being provided with its stereographic map of modulate circuit 3(can be referring to Fig. 2), this modulate circuit 3(is also referred to as flexible PCB) be converted to voltage signal in order to the capacitance signal that pressure-sensing device 4 is produced.As shown in Figure 1, be connected with three terminals above modulate circuit 3, described three terminals are respectively power input terminal, ground terminal and lead-out terminal, the voltage signal output of described lead-out terminal for modulate circuit 3 is produced.
Claims (10)
1. a pressure transducer, described pressure transducer comprises:
Pressure end member (10), the top of described pressure end member (10) has cylindrical shape cup (11), and the upper end of described cylindrical shape cup (11) is connected with electrical connection terminal member (1);
Be contained in the pressure-sensing device (4) in described cylindrical shape cup (11), below described electrical connection terminal member (1);
Be contained in the O-ring seal (5) that described cylindrical shape cup (11) is interior, be closely arranged in described pressure-sensing device (4) below;
It is characterized in that:
Described pressure-sensing device (4) and described O-ring seal (5) are closely surrounded by electro-magnetic shielding cover (6), and described electro-magnetic shielding cover (6) is roughly cup-shaped, and the coboundary of the peripheral wall of described electro-magnetic shielding cover (6) does not radially curve inwardly;
The coboundary of described cylindrical shape cup (11) radially curves inwardly, and forms to compress to be connected with the outside flange connector of described electrical connection terminal member (1) lower end.
2. pressure transducer as claimed in claim 1, it is characterized in that: between the peripheral wall of described electro-magnetic shielding cover (6) and the cylindrical shape cup (11) of described pressure end member (10), be also provided with insulating boot (7), the coboundary of described insulating boot (7) radially curves inwardly to form bending coated portion, and the coated portion of described bending is being coated the coboundary of the peripheral wall of described electro-magnetic shielding cover (6).
3. pressure transducer as claimed in claim 1, it is characterized in that: described O-ring seal (5) comprises the rubber ring that is flat ring-type, in described rubber ring, be coated with the becket that is flat ring-type, the external diameter of the external diameter of described rubber ring and described pressure-sensing device (4) is roughly the same.
4. pressure transducer as claimed in claim 1, is characterized in that: the central authorities of the base wall of described electro-magnetic shielding cover (6) are provided with opening.
5. pressure transducer as claimed in claim 1, it is characterized in that: the below of the base wall of described electro-magnetic shielding cover (6) is provided with sealing ring (9), described sealing ring (9) is pressed between the base wall of described electro-magnetic shielding cover (6) and the base wall of described pressure end member (10).
6. pressure transducer as claimed in claim 5, it is characterized in that: the base wall of described pressure end member (10) is provided with sealing ring stop lug (12), described sealing ring stop lug (12) is upwards extended from the base wall of described pressure end member (10), to with the internal edge next-door neighbour of described sealing ring (9), thereby the position of the inner peripheral of described sealing ring (9) is fixed.
7. pressure transducer as claimed in claim 6, it is characterized in that: the periphery of described sealing ring (9) is also provided with insulation spacer (8), described insulation spacer (8) is fixed the position of the outer peripheral edges of described sealing ring (9), thereby the radial and axial decrement of described sealing ring (9) is fixed, and play insulating effect.
8. the pressure transducer as described in any one in claim 5-7, it is characterized in that: the distance between the coboundary of the cylindrical shape cup (11) of described pressure end member (10) and the base wall of described pressure end member (10) and the height of described electro-magnetic shielding cover (6) are set to: described sealing ring (9) is pressed on to the base wall of described electro-magnetic shielding cover (6) and described pressure end member (10) thus base wall between form tight seal, O-ring seal (5) is pressed on to the base wall of pressure-sensing device (4) and electro-magnetic shielding cover (6) thus bottom interior wall between form tight seal, and the coboundary that makes described electro-magnetic shielding cover (6) be pressed on described cylindrical shape cup (11) thus the lower surface of the part that radially curves inwardly of coboundary on form closely and connect.
9. the pressure transducer as described in any one in claim 5-7, is characterized in that:
Between the peripheral wall of described electro-magnetic shielding cover (6) and the cylindrical shape cup (11) of described pressure end member (10), be also provided with insulating boot (7); And
Distance between the coboundary of the cylindrical shape cup (11) of described pressure end member (10) and the base wall of described pressure end member (10) is set to: described sealing ring (9) is pressed on to the base wall of described electro-magnetic shielding cover (6) and described pressure end member (10) thus base wall between form tight seal, O-ring seal (5) is pressed on to the base wall of pressure-sensing device (4) and electro-magnetic shielding cover (6) thus bottom interior wall between form tight seal, and make the coboundary of described electro-magnetic shielding cover (6) be pressed on described insulating boot (7) thus the lower surface of the coated portion of formed bending that radially curves inwardly of coboundary on form closely and connect.
10. the pressure transducer as described in any one in claim 5-7, is characterized in that:
Be provided with modulate circuit (3) in the top of described pressure-sensing device (4), described modulate circuit (3) is converted to voltage signal in order to the capacitance signal that described pressure-sensing device (4) is produced, and be connected with three terminals in the top of described modulate circuit (3), described three terminals are respectively power input terminal, ground terminal and lead-out terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420040844.4U CN203811316U (en) | 2014-01-23 | 2014-01-23 | Pressure sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420040844.4U CN203811316U (en) | 2014-01-23 | 2014-01-23 | Pressure sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203811316U true CN203811316U (en) | 2014-09-03 |
Family
ID=51450053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420040844.4U Expired - Lifetime CN203811316U (en) | 2014-01-23 | 2014-01-23 | Pressure sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203811316U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043658A (en) * | 2015-06-19 | 2015-11-11 | 宁波南车时代传感技术有限公司 | Pressure sensor used in air conditioner |
| CN107014525A (en) * | 2017-05-19 | 2017-08-04 | 深圳安培龙科技股份有限公司 | A kind of ceramic capacitive pressure sensor of anti-conductor fluid and electromagnetic interference |
| CN110402379A (en) * | 2017-03-17 | 2019-11-01 | 株式会社鹭宫制作所 | Pressure sensor |
| CN112188728A (en) * | 2020-09-17 | 2021-01-05 | 西安交通大学 | Temperature and pressure integrated sensor based on flip chip and packaging method thereof |
-
2014
- 2014-01-23 CN CN201420040844.4U patent/CN203811316U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043658A (en) * | 2015-06-19 | 2015-11-11 | 宁波南车时代传感技术有限公司 | Pressure sensor used in air conditioner |
| CN110402379A (en) * | 2017-03-17 | 2019-11-01 | 株式会社鹭宫制作所 | Pressure sensor |
| CN110402379B (en) * | 2017-03-17 | 2021-05-11 | 株式会社鹭宫制作所 | Pressure sensor |
| CN107014525A (en) * | 2017-05-19 | 2017-08-04 | 深圳安培龙科技股份有限公司 | A kind of ceramic capacitive pressure sensor of anti-conductor fluid and electromagnetic interference |
| CN107014525B (en) * | 2017-05-19 | 2023-06-16 | 深圳安培龙科技股份有限公司 | Ceramic capacitive pressure sensor resistant to conductive fluid and electromagnetic interference |
| CN112188728A (en) * | 2020-09-17 | 2021-01-05 | 西安交通大学 | Temperature and pressure integrated sensor based on flip chip and packaging method thereof |
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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 |
Granted publication date: 20140903 |
|
| CX01 | Expiry of patent term |