CN219084292U

CN219084292U - Pressure sensor packaging structure

Info

Publication number: CN219084292U
Application number: CN202223251997.7U
Authority: CN
Inventors: 张建东
Original assignee: Shenzhen Zhibosen Automation Co ltd
Current assignee: Shenzhen Zhibosen Automation Co ltd
Priority date: 2022-12-06
Filing date: 2022-12-06
Publication date: 2023-05-26
Anticipated expiration: 2032-12-06

Abstract

The utility model relates to the field of pressure sensors and discloses a pressure sensor packaging structure which comprises a pressure sensor, wherein the pressure sensor comprises a shell, the top of the shell is connected with a sealing cover through a sealing mechanism, the middle part of one side of the sealing cover is fixedly connected with an air inlet, the middle part of the bottom end in the shell is fixedly connected with a base, the middle part of the top end of the base is fixedly connected with a chip, the upper side of the chip is provided with a fixing plate, the middle part of the fixing plate is provided with an elastic diaphragm, and the elastic diaphragm is electrically connected with the chip through Wheatstone bridges on two sides. According to the pressure sensor packaging structure, one seal can be formed through the threaded ring, and meanwhile, the second seal can be formed through the inner sealing ring on the basis, so that the air pressure sensor can have higher sealing performance, the air pressure sensor cannot be easily corroded by the outside in the using and storing processes, and meanwhile, the measuring result of the air pressure sensor can be more accurate.

Description

Pressure sensor packaging structure

Technical Field

The utility model relates to the field of pressure sensors, in particular to a pressure sensor packaging structure.

Background

Pressure sensors are widely used in various fields such as industrial production, medical and health, environmental monitoring and scientific research, and the basic principle is to convert pressure change values into changes of electric signals. The pressure sensor is utilized to integrate the acquisition, processing and execution of the pressure change information together to form a multifunctional composite miniature intelligent system, compressed air is often used in industrial production, the pressure sensor is often used in a conventional air conveying pipeline, the air pressure in the air conveying pipeline is monitored through the pressure sensor, however, the conventional pressure sensor generally only uses single-layer or two-layer sealing during manufacturing, the sealing performance cannot meet the use requirement of higher layers, and the actual use is not facilitated.

Disclosure of Invention

The utility model mainly aims to provide a pressure sensor packaging structure which can effectively solve the problems in the background technology.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a pressure sensor packaging structure, includes the baroceptor, the baroceptor includes the casing, the casing top is connected with the closing cap through sealing mechanism, closing cap one side middle part fixedly connected with air inlet, the bottom middle part fixedly connected with base in the casing, base top middle part fixedly connected with chip, the chip upside is provided with the fixed plate, fixed plate mid-mounting has elastic diaphragm, elastic diaphragm passes through wheatstone bridge and the chip electric connection of both sides, fixed plate fixedly connected with is in the middle part in the casing.

Preferably, the sealing mechanism comprises a first connecting ring, the first connecting ring is fixedly connected to the upper portion of the periphery of the shell, a threaded ring is fixedly connected to the middle portion of the top end of the first connecting ring, the top of the threaded ring is in threaded connection to the middle portion of the two bottom ends of the connecting ring, the second connecting ring is fixedly connected to the lower portion of the periphery of the sealing cover, an inner sealing ring is in threaded connection to the inner bottom of the sealing cover, the bottom of the inner sealing ring is in sliding connection to the upper portion in the shell, evenly distributed positioning grooves are formed in the lower portion of the periphery of the inner sealing ring, and positioning columns are in sliding connection to the inner portions of the positioning grooves.

Preferably, a ring groove is formed in the middle of the periphery between the second connecting ring and the first connecting ring.

Preferably, an outer sealing ring is arranged inside the annular groove.

Preferably, the bottom ends of the positioning columns are fixedly connected to the top end of the supporting table, and the positioning columns are fixedly connected with the shell.

Preferably, the supporting table is fixedly connected to the upper portion in the shell, and the supporting table is arranged on the upper side of the fixing plate.

Compared with the prior art, the utility model has the following beneficial effects:

the positioning groove on the inner sealing ring can be matched with the positioning column on the supporting table to position the inner sealing ring, when the inner sealing ring is clamped on the supporting table, the sealing cover is aligned with the shell, the sealing cover is screwed on the upper portion of the shell, the sealing cover and the shell can be fixed, at the moment, a seal can be formed through the threaded ring, meanwhile, a second seal can be formed on the basis through the inner sealing ring, the air pressure sensor can have higher sealing performance, the air pressure sensor cannot be easily corroded by the outside in the using and storing process, meanwhile, the measuring result of the air pressure sensor can be more accurate, after the sealing cover and the shell are fixed, people can fill the annular groove by using liquid resin materials, after the resin is solidified, the outer sealing ring is formed, the sealing performance of the air pressure sensor can be further improved through the outer sealing ring, and the air pressure sensor is beneficial to practical use.

Drawings

FIG. 1 is a front perspective view of a pressure sensor package structure of the present utility model;

FIG. 2 is a schematic diagram of the internal structure of a pressure sensor package according to the present utility model;

FIG. 3 is a schematic view of a partial structure of a package structure of a pressure sensor according to the present utility model;

fig. 4 is a schematic partial structure of a pressure sensor package structure according to the present utility model.

In the figure: 1. an air pressure sensor; 101. a housing; 102. an air inlet; 103. a cover; 104. a fixing plate; 105. an elastic membrane; 106. a chip; 107. a base; 2. a sealing mechanism; 201. a first connecting ring; 202. a second connecting ring; 203. an inner seal ring; 204. an outer seal ring; 205. a threaded ring; 206. a ring groove; 207. a positioning groove; 208. a support table; 209. and positioning columns.

Detailed Description

The utility model is further described in connection with the following detailed description, in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the utility model easy to understand.

As shown in fig. 1-4, a pressure sensor packaging structure comprises a pressure sensor 1, wherein the pressure sensor 1 comprises a shell 101, the top of the shell 101 is connected with a sealing cover 103 through a sealing mechanism 2, the middle part of one side of the sealing cover 103 is fixedly connected with an air inlet 102, the middle part of the inner bottom of the shell 101 is fixedly connected with a base 107, the middle part of the top end of the base 107 is fixedly connected with a chip 106, the upper side of the chip 106 is provided with a fixing plate 104, the middle part of the fixing plate 104 is provided with an elastic membrane 105, the elastic membrane 105 is electrically connected with the chip 106 through wheatstone bridges on two sides, and the fixing plate 104 is fixedly connected with the middle part in the shell 101.

In this embodiment, the air pressure sensor 1 includes a housing 101, a sealing mechanism 2 is connected to the top of the housing 101, a sealing cover 103 is fixedly connected to an air inlet 102 in the middle of one side of the sealing cover 103, a base 107 is fixedly connected to the middle of the inner bottom of the housing 101, a chip 106 is fixedly connected to the middle of the top of the base 107, a fixing plate 104 is disposed on the upper side of the chip 106, an elastic membrane 105 is mounted in the middle of the fixing plate 104, the elastic membrane 105 is electrically connected to the chip 106 through wheatstone bridges on two sides, and the fixing plate 104 is fixedly connected to the middle of the housing 101.

Specifically, in actual use, air at the monitored position can enter the air pressure sensor 1 through the air inlet 102, under the action of atmospheric pressure, air pressure can lead to the fact the oppression to the elastic diaphragm 105 to make the elastic diaphragm 105 take place elastic deformation, can make the resistance value on the wheatstone bridge of elastic diaphragm 105 both sides change after the elastic diaphragm 105 takes place deformation, the chip 106 on the base 107 can be given to the resistance data that changes in step, can obtain the concrete change numerical value of air pressure according to the formula through the chip 106, thereby can help people to control the change condition of this position air pressure.

In this embodiment, the sealing mechanism 2 includes a first connecting ring 201, the first connecting ring 201 is fixedly connected to an upper portion of an outer periphery of the housing 101, a threaded ring 205 is fixedly connected to a middle portion of a top end of the first connecting ring 201, a threaded connection is formed in a middle portion of a bottom end of the second connecting ring 202, a ring groove 206 is formed in a middle portion of an outer periphery between the second connecting ring 202 and the first connecting ring 201, an outer sealing ring 204 is arranged in the ring groove 206, the second connecting ring 202 is fixedly connected to a lower portion of an outer periphery of the cover 103, an inner sealing ring 203 is in threaded connection with an inner sealing ring 203 in the inner periphery of the cover 103, positioning grooves 207 are uniformly distributed in the lower portion of the outer periphery of the inner sealing ring 203, positioning columns 209 are uniformly and slidably connected in the positioning grooves 207, bottom ends of the positioning columns 209 are fixedly connected to top ends of the supporting columns 208, the positioning columns 209 are fixedly connected to the housing 101, the supporting columns 208 are fixedly connected to an upper portion of the housing 101, and the supporting columns 208 are arranged on an upper portion of the fixing plate 104.

Specifically, in the process of manufacturing and assembling the air pressure sensor 1, people can firstly install the inner sealing ring 203 inside the air pressure sensor 1, during installation, the positioning groove 207 on the inner sealing ring 203 can be matched with the positioning column 209 on the supporting table 208, positioning of the inner sealing ring 203 is achieved, after the inner sealing ring 203 is clamped on the supporting table 208, the sealing cover 103 is aligned with the shell 101, the sealing cover 103 is screwed on the upper portion of the shell 101, fixing of the sealing cover 103 and the shell 101 can be achieved, at the moment, a seal can be formed through the threaded ring 205, meanwhile, a second seal can be formed on the basis of the inner sealing ring 203, the air pressure sensor 1 can have higher sealing performance, the air pressure sensor 1 cannot be easily corroded by the outside in the using and storing processes, meanwhile, the measuring result of the air pressure sensor 1 can be more accurate, after the sealing cover 103 is clamped on the supporting table 208, people can utilize liquid resin to fill the annular groove 206, after the resin is solidified, the sealing ring 204 is formed, the air pressure sensor 1 can be further improved in practical use, and the air pressure sensor can be further improved in the air pressure sensor.

Working principle:

in actual use, air at the monitored position enters the air pressure sensor 1 through the air inlet 102, under the action of atmospheric pressure, the air pressure can press the elastic diaphragm 105, so that the elastic diaphragm 105 is elastically deformed, when the elastic diaphragm 105 is deformed, the resistance values on the Wheatstone bridges at two sides of the elastic diaphragm 105 are changed, the changed resistance data can be synchronously transmitted to the chip 106 on the base 107, the specific change value of the air pressure can be obtained according to a calculation formula through the chip 106, thereby helping people to control the change condition of the air pressure at the position, in the process of manufacturing and assembling the air pressure sensor 1, people can firstly install the inner sealing ring 203 in the air pressure sensor 1, and during installation, the inner sealing ring 203 can be matched with the positioning column 209 on the supporting table 208 through the positioning groove 207 on the inner sealing ring 203, the positioning of the inner sealing ring 203 is realized, after the inner sealing ring 203 is clamped on the supporting table 208, the sealing cover 103 is aligned with the shell 101, the sealing cover 103 is screwed on the upper part of the shell 101, the sealing cover 103 and the shell 101 can be fixed, at the moment, one seal can be formed through the threaded ring 205, and meanwhile, the second seal can be formed on the basis through the inner sealing ring 203, so that the air pressure sensor 1 can have higher sealing performance, the air pressure sensor 1 can not be easily corroded by the outside in the using and storing processes, the measuring result of the air pressure sensor 1 can be more accurate, after the sealing cover 103 and the shell 101 are fixed, people can utilize liquid resin material to fill the ring groove 206, after the resin is solidified, the outer sealing ring 204 is formed, the tightness of the air pressure sensor 1 can be further improved through the outer sealing ring 204, is beneficial to practical use.

The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a pressure sensor packaging structure, includes air pressure sensor (1), its characterized in that: the air pressure sensor (1) comprises a shell (101), the top of the shell (101) is connected with a sealing cover (103) through a sealing mechanism (2), an air inlet (102) is fixedly connected to one side of the sealing cover (103), a base (107) is fixedly connected to the middle of the inner bottom of the shell (101), a chip (106) is fixedly connected to the middle of the top of the base (107), a fixing plate (104) is arranged on the upper side of the chip (106), an elastic membrane (105) is arranged in the middle of the fixing plate (104), the elastic membrane (105) is electrically connected with the chip (106) through Wheatstone bridges on two sides, and the fixing plate (104) is fixedly connected to the middle of the shell (101).

2. The pressure sensor package of claim 1, wherein: sealing mechanism (2) are including go-between one (201), go-between one (201) fixed connection is on casing (101) periphery upper portion, go-between one (201) top middle part fixedly connected with screwed ring (205), screwed ring (205) top threaded connection is in go-between two (202) bottom middle parts, go-between two (202) fixed connection is in closing cap (103) periphery lower part, interior bottom threaded connection in closing cap (103) has inner seal ring (203), inner seal ring (203) bottom sliding connection is on casing (101) upper portion in, inner seal ring (203) periphery lower part is provided with evenly distributed's constant head tank (207), equal sliding connection has reference column (209) in constant head tank (207).

3. The pressure sensor package of claim 2, wherein: an annular groove (206) is formed in the middle of the periphery between the second connecting ring (202) and the first connecting ring (201).

4. A pressure sensor package according to claim 3, wherein: an outer sealing ring (204) is arranged in the annular groove (206).

5. The pressure sensor package of claim 2, wherein: the bottom ends of the positioning columns (209) are fixedly connected to the top end of the supporting table (208), and the positioning columns (209) are fixedly connected with the shell (101).

6. The pressure sensor package of claim 5, wherein: the supporting table (208) is fixedly connected to the inner upper portion of the shell (101), and the supporting table (208) is arranged on the upper side of the fixing plate (104).