CN220729508U - Piezoresistive sensor packaging structure - Google Patents
Piezoresistive sensor packaging structure Download PDFInfo
- Publication number
- CN220729508U CN220729508U CN202322552451.3U CN202322552451U CN220729508U CN 220729508 U CN220729508 U CN 220729508U CN 202322552451 U CN202322552451 U CN 202322552451U CN 220729508 U CN220729508 U CN 220729508U
- Authority
- CN
- China
- Prior art keywords
- seat
- sealing ring
- connecting cylinder
- cylinder
- packaging structure
- 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.)
- Active
Links
- 238000004806 packaging method and process Methods 0.000 title claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 59
- 239000000758 substrate Substances 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims description 13
- 239000012528 membrane Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 11
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Landscapes
- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a piezoresistance sensor packaging structure, which comprises a base and a shell, wherein a high-pressure cavity is arranged in the base, a cylinder seat is arranged at one end of the base, an inner seat is also arranged in the cylinder seat, a sensitive element for sensing pressure change is arranged on the inner seat, the inner seat extends into the high-pressure cavity, a sealing ring is sleeved outside the inner seat, a locking mechanism for extruding the sealing ring is also arranged on the inner seat, through the arranged locking mechanism, the sealing ring is sleeved on the convex ring I of the inner seat, the substrate can be extruded to form the sealing ring through the rotating nut, the sealing ring can be extruded to deform, the outer circle of the sealing ring is outwards expanded, the outer circle of the sealing ring can be tightly attached to the inner wall of the high-pressure cavity of the base after being expanded, a better sealing effect can be achieved, and the sealing ring can be extruded again through the continuous locking nut after being used for a long time, so that the service time of the sealing ring is prolonged.
Description
Technical Field
The utility model relates to the technical field of sensors, in particular to a piezoresistive sensor packaging structure.
Background
The piezoresistive pressure sensor is one of the pressure sensors, when the sensitive element in the piezoresistive sensor is assembled, a sealing ring is required to be used for keeping the tightness of the installation of the sensitive element, a packaging structure of the pressure sensor and the pressure sensor are disclosed in patent publication No. CN 216050386U, the sealing element disclosed in the prior art is arranged at the bottom of the sensitive element, but other piezoresistive sensors are sold according to the market, the sealing element is sleeved outside the sensitive element for use, the sealing element cannot be well attached to the inner wall of a pipe fitting, the sealing effect is not too good, and the sealing element is worn after long-term use, so that the sealing effect cannot be achieved.
Disclosure of Invention
In order to overcome the defects in the prior art, the embodiment of the utility model provides a piezoresistive sensor packaging structure, a sealing ring is sleeved on a convex ring I of an inner seat through a locking structure, a substrate can be extruded to form a sealing ring through rotating a nut, the sealing ring can be extruded and deformed, the outer circle of the sealing ring can be tightly attached to the inner wall of a high-pressure cavity of a base after being expanded, a better sealing effect can be achieved, even if the piezoresistive sensor packaging structure is used for a long time, the sealing ring can be extruded again through the locking nut, and the service time of the sealing ring is prolonged, so that the problems in the prior art are solved.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the high-pressure sealing device comprises a base and a shell, wherein a high-pressure cavity is formed in the base, a cylinder seat is arranged at one end of the base, an inner seat is further arranged in the cylinder seat, a sensitive element for sensing pressure change is arranged on the inner seat, the inner seat extends into the high-pressure cavity, a sealing ring is sleeved outside the inner seat, and a locking mechanism for extruding the sealing ring is further arranged on the inner seat.
In a preferred embodiment, one end of the base is respectively provided with an outer connecting cylinder and an inner connecting cylinder, the inner connecting cylinder and the outer connecting cylinder are concentrically arranged, a gap is further arranged between the inner connecting cylinder and the outer connecting cylinder, the shell and the outer connecting cylinder are in threaded installation, and the cylinder seat and the inner connecting cylinder are in threaded installation.
In a preferred embodiment, the locking mechanism comprises a locking rod which is movably penetrated with the inner seat, and a base plate arranged at one end of the locking rod, a nut is arranged at the other end of the locking rod, a convex ring II and a convex ring I are respectively arranged on the base plate and the inner seat, and the sealing ring is sleeved on the convex ring I.
In a preferred embodiment, the first aperture of the convex ring is larger than the second aperture of the convex ring, the second convex ring and the first convex ring are in plug-in installation, and the width of the sealing ring is larger than the width of the first convex ring.
In a preferred embodiment, the sensing element is fixedly arranged on one side of the substrate, and the end face of the sensing element is provided with a pressure sensing diaphragm.
In a preferred embodiment, a circuit board is mounted at one end of the cylinder seat, the circuit board is fixedly mounted with an inner seat in the cylinder seat through bolts, and the edge of the circuit board is fixedly mounted with the end face of the outer connecting cylinder through bolts.
In a preferred embodiment, one end of the cylinder seat is provided with an outer joint, and a pressure guide hole communicated with the high-pressure cavity is axially formed in the outer joint.
In a preferred embodiment, an electrical connector is provided at one end of the housing, and wires are connected between the electrical connector and the circuit board.
The utility model has the technical effects and advantages that: through the locking structure who sets up, with the sealing ring snare on the bulge loop of inner race one, can make the base plate extrusion sealing washer through rotatory nut, this can be with sealing washer extrusion deformation, makes the outside expansion of sealing washer excircle, can hug closely the high-pressure chamber inner wall of base after its sealing washer excircle enlarges, can play better sealed effect, even after long-term use, also can extrude the sealing washer once more through continuing lock nut, improves sealing washer live time.
Meanwhile, the circuit board in the piezoresistive sensor is respectively installed with the outer connecting cylinder and the inner seat in the cylinder seat through bolts, and the installation mode can prevent the cylinder seat from rotating on the inner connecting cylinder, so that the cylinder seat is enabled to rotate on the inner connecting cylinder due to the impact force of fluid on the sensitive element, and the sealing effect is poor.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
Fig. 2 is a schematic diagram of the overall split structure of the present utility model.
FIG. 3 is a schematic diagram of the assembly structure of the cartridge and the base of the present utility model.
Fig. 4 is a schematic view of the internal structure of the base of the present utility model.
Fig. 5 is a schematic view of the internal structure of the cartridge of the present utility model.
Fig. 6 is a schematic plan view of a cartridge holder according to the present utility model.
The reference numerals are: 1. a base; 101. an outer joint; 102. a pressure guiding hole; 103. a high pressure chamber; 104. an outer connecting cylinder; 105. an inner connecting cylinder; 2. a housing; 3. a cylinder seat; 301. a pressure-sensitive membrane; 302. a sensor; 303. an inner seat; 304. a convex ring I; 305. a locking lever; 306. a convex ring II; 307. a substrate; 308. a seal ring; 309. a nut; 4. a circuit board; 5. an electrical connector.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The piezoresistive sensor packaging structure shown in fig. 1 and 6 comprises a base 1 and a shell 2, wherein one end of the base 1 is respectively provided with an outer connecting cylinder 104 and an inner connecting cylinder 105, the inner connecting cylinder and the outer connecting cylinder are concentrically arranged, a gap is further formed between the inner connecting cylinder and the outer connecting cylinder, the shell 2 and the outer connecting cylinder 104 are in threaded installation, a cylinder seat 3 and the inner connecting cylinder 105 are in threaded installation, the piezoresistive sensor packaging structure is convenient for later disassembly and installation of the shell 2 and the cylinder seat 3, a high-pressure cavity 103 is arranged in the base 1, the cylinder seat 3 is installed at one end of the base 1, an inner seat 303 is further arranged in the cylinder seat 3, a sensitive element 302 for sensing pressure change is installed on the inner seat 303, the inner seat 303 extends into the high-pressure cavity 103, a sealing ring 308 is sleeved outside the inner seat 303, a locking mechanism for extruding the sealing ring 308 is further arranged on the inner seat 303, and the outer circle of the sealing ring 308 is expanded outwards through the locking mechanism, so that the outer circle of the sealing ring 308 can be better clung to the inner wall of the high-pressure cavity 103, and a better sealing effect is achieved.
As shown in fig. 1 to 6, the locking mechanism is a locking rod 305 movably penetrating through the inner seat 303, and a base plate 307 disposed at one end of the locking rod 305, a nut 309 is disposed at the other end of the locking rod 305, the locking rod 305 is driven to move upward by rotating the nut 309, a convex ring two 306 and a convex ring one 304 are disposed on the base plate 307 and the inner seat 303, a sealing ring 308 is sleeved on the convex ring one 304, the aperture of the convex ring one 304 is larger than that of the convex ring two 306, the convex ring two 306 and the convex ring one 304 are in plug-in installation, the width of the sealing ring 308 is larger than that of the convex ring one 304, and when the base plate 307 moves upward, the edge of the sealing ring 308 can be extruded, so that when the base plate 307 expands outward, the outer circle of the sealing ring 308 can be better clung to the inner wall of the high-pressure cavity 103.
As shown in fig. 1 to 6, the sensing element 302 is fixedly installed on one side of the substrate 307, the end face of the sensing element 302 is provided with a pressure sensing membrane 301 for sensing fluid pressure, one end of the cylinder seat 3 is provided with a circuit board 4, the circuit board 4 is fixedly installed with an inner seat 303 in the cylinder seat 3 through bolts, meanwhile, the edge of the circuit board 4 is fixedly installed with the end face of an outer connecting cylinder 104 through bolts, the installation mode can prevent the cylinder seat 3 from rotating with the inner connecting cylinder 105 under the condition of external force, for example, fluid flows into the high-pressure cavity 103 to impact the sensing element 302, the impact force can cause the cylinder seat 3 to rotate with the inner connecting cylinder 105, looseness can affect sealing effect, one end of the cylinder seat 3 is provided with an outer joint 101, the inner side of the outer joint 101 is axially provided with a pressure guide hole 102 communicated with the high-pressure cavity 103, in use, fluid enters the high-pressure cavity 103 through the outer joint 101, one end of the outer housing 2 is provided with an electric connector 5, and a wire is connected between the electric connector 5 and the circuit board 4.
The working principle of the utility model is as follows: during assembly, the sealing ring 308 is sleeved on the first convex ring 304 of the inner seat 303, the substrate 307 can be pressed against the sealing ring 308 through the rotating nut 309, the sealing ring 308 can be pressed and deformed, the outer circle of the sealing ring 308 is expanded outwards, the outer circle of the sealing ring can be tightly attached to the inner wall of the high-pressure cavity 103 of the base 1, a better sealing effect can be achieved, after the cylinder seat 3 is assembled, the circuit board 4 is fixedly connected with the end face of the outer connecting cylinder 104 and the inner seat 303 in the cylinder seat 3 through bolts, the cylinder seat 3 can be prevented from rotating with the inner connecting cylinder 105 under the condition of external force by the installation mode, for example, the impact force of the fluid flowing into the high-pressure cavity 103 to the sensitive element 302 can cause the cylinder seat 3 to rotate on the inner connecting cylinder 105, the sealing effect can be affected, and finally the shell 2 is installed.
The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;
secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;
finally: the foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.
Claims (8)
1. The utility model provides a piezoresistance sensor packaging structure, includes base (1) and shell (2), its characterized in that: the high-pressure sealing device is characterized in that a high-pressure cavity (103) is formed in the base (1), a cylinder seat (3) is arranged at one end of the base (1), an inner seat (303) is further arranged in the cylinder seat (3), a sensitive element (302) for sensing pressure change is arranged on the inner seat (303), the inner seat (303) extends into the high-pressure cavity (103), a sealing ring (308) is sleeved outside the inner seat (303), and a locking mechanism for extruding the sealing ring (308) is further arranged on the inner seat (303).
2. The piezoresistive sensor packaging structure according to claim 1, wherein: one end of the base (1) is respectively provided with an outer connecting cylinder (104) and an inner connecting cylinder (105), the inner connecting cylinder and the outer connecting cylinder are concentrically arranged, a gap is further arranged between the inner connecting cylinder and the outer connecting cylinder, the shell (2) and the outer connecting cylinder (104) are in threaded installation, and the cylinder seat (3) and the inner connecting cylinder (105) are in threaded installation.
3. The piezoresistive sensor packaging structure according to claim 1, wherein: the locking mechanism comprises a locking rod (305) which is movably penetrated with the inner seat (303), and a base plate (307) arranged at one end of the locking rod (305), a nut (309) is arranged at the other end of the locking rod (305), a convex ring II (306) and a convex ring I (304) are respectively arranged on the base plate (307) and the inner seat (303), and a sealing ring (308) is sleeved on the convex ring I (304).
4. A piezoresistive sensor packaging structure according to claim 3, characterized in that: the aperture of the first convex ring (304) is larger than that of the second convex ring (306), the second convex ring (306) and the first convex ring (304) are arranged in an inserting mode, and the width of the sealing ring (308) is larger than that of the first convex ring (304).
5. A piezoresistive sensor packaging structure according to claim 3, characterized in that: the sensing element (302) is fixedly arranged on one side of the substrate (307), and a pressure sensing membrane (301) is arranged on the end face of the sensing element (302).
6. The piezoresistive sensor packaging structure according to claim 2, wherein: a circuit board (4) is installed at one end of the cylinder seat (3), the circuit board (4) is fixedly installed with an inner seat (303) in the cylinder seat (3) through bolts, and meanwhile, the edge of the circuit board (4) is fixedly installed with the end face of the outer connecting cylinder (104) through bolts.
7. The piezoresistive sensor packaging structure according to claim 1, wherein: one end of the cylinder seat (3) is provided with an outer joint (101), and a pressure guide hole (102) communicated with the high-pressure cavity (103) is axially formed in the outer joint (101).
8. The piezoresistive sensor packaging structure according to claim 6, wherein: an electric connector (5) is arranged at one end of the shell (2), and a wire is connected between the electric connector (5) and the circuit board (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322552451.3U CN220729508U (en) | 2023-09-20 | 2023-09-20 | Piezoresistive sensor packaging structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322552451.3U CN220729508U (en) | 2023-09-20 | 2023-09-20 | Piezoresistive sensor packaging structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220729508U true CN220729508U (en) | 2024-04-05 |
Family
ID=90490628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322552451.3U Active CN220729508U (en) | 2023-09-20 | 2023-09-20 | Piezoresistive sensor packaging structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220729508U (en) |
-
2023
- 2023-09-20 CN CN202322552451.3U patent/CN220729508U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2022127810A1 (en) | Sensor assembly and valve device | |
| US6539808B2 (en) | Press-fit remote diaphragm assembly | |
| CN220729508U (en) | Piezoresistive sensor packaging structure | |
| CN204204743U (en) | Direct-acting type pressure switch | |
| CN211344019U (en) | Pressure sensor with double-sealing structure | |
| CN210036850U (en) | Novel temperature and pressure compensation device for gas flowmeter | |
| CN113324114A (en) | Pipe joint assembly for fluid multi-parameter measurement | |
| EP3309528B1 (en) | Tube diaphragm seal | |
| CN212389894U (en) | Pipe joint assembly for fluid multi-parameter measurement | |
| CN112824845B (en) | Method and apparatus for providing freeze resistant sensing assembly | |
| CN111157166B (en) | Liquid chromatography pump pressure measuring device and pump head | |
| CN207894433U (en) | A kind of sensor fixing structure | |
| CN220893625U (en) | Single-hole sealed force sensor | |
| CN212462290U (en) | Integrative changer adapter is pressed to oil gas well temperature | |
| CN117589361B (en) | Water pressure detection device of boiler | |
| CN214055070U (en) | Automatic closing device of terminal surface sealing washer under super high pressure water operational environment | |
| CN217032856U (en) | Double-nozzle gas differential pressure sensor | |
| CN216144454U (en) | Micro differential pressure transmitter air inlet structure and micro differential pressure transmitter | |
| CN218955978U (en) | Mechanical pressure sensing structure for micro-pressure signal device | |
| CN220792131U (en) | Valve rod externally-mounted stainless steel valve control ultrasonic meter shell | |
| CN220018804U (en) | Leakage-proof pressure sensor | |
| CN220912545U (en) | Simple and reliable air pressure measuring mechanism | |
| CN219434121U (en) | Pressure temperature sensor assembly | |
| CN219869757U (en) | High-pressure-resistant temperature and pressure sensor | |
| CN211289129U (en) | Quick plug-in metal pipeline connecting device that can seal in advance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |