CN216410455U

CN216410455U - Miniature precision pressure sensor

Info

Publication number: CN216410455U
Application number: CN202121928700.9U
Authority: CN
Inventors: 周梓敬
Original assignee: Yantai Xinli Biochemical Products Co ltd
Current assignee: Yantai Xinli Biochemical Products Co ltd
Priority date: 2021-08-17
Filing date: 2021-08-17
Publication date: 2022-04-29
Anticipated expiration: 2031-08-17

Abstract

The utility model discloses a miniature precise pressure sensor which comprises a sensor shell, a sealing assembly and an installation assembly, wherein one end of the sensor shell is arranged to be an open end, the sealing assembly is arranged at the open end of the sensor shell and comprises an insertion cylinder, the insertion cylinder is inserted at the open end of the sensor shell, the installation assembly is installed at the bottom end inside the insertion cylinder, and a detection head is inserted in the installation assembly in a penetrating and inserting mode. The utility model can ensure the sealing performance of the detection head part and the shell encapsulation of the miniature pressure sensor and prolong the service life.

Description

Miniature precision pressure sensor

Technical Field

The utility model relates to the technical field of pressure sensors, in particular to a miniature precision pressure sensor.

Background

The pressure sensor is made of monocrystalline silicon as a substrate by adopting an advanced ion implantation process and a micro-machining process, and is provided with a Wheatstone bridge and a silicon sensitive element with a precise mechanical structure, the detected pressure acts on the silicon sensitive element through a pressure interface, so that the linear conversion of the applied pressure and an output signal is realized, the pressure is transmitted to a monitoring display screen connected with the pressure sensor through a control unit and a signal transmission line, the detection head of the existing miniature pressure sensor mostly extends out of the shell, the sealing effect of the joint between the detection head and the shell is poor due to the structure and the packaging process of the existing miniature pressure sensor, water drops or oil liquid easily enters the shell from the joint, the short circuit of devices in the shell is caused, and the service life of the pressure sensor is influenced.

Therefore, a miniature precise pressure sensor is needed, which can ensure the sealing performance of the detection head and the shell of the miniature pressure sensor and prolong the service life.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a miniature precise pressure sensor, aiming at improving the structure and packaging process reasons of the existing miniature pressure sensor, and solving the problems that the sealing effect of the joint between a detection head and a shell is poor, water drops or oil easily enters the shell from the joint, so that the short circuit of devices in the shell is caused, and the service life of the pressure sensor is influenced.

The utility model is realized by the following steps:

the utility model provides a miniature accurate pressure sensor, includes the sensor housing, and the one end of sensor housing sets up to the open end, still includes seal assembly and installation component, and seal assembly sets up the open end department at the sensor housing, and seal assembly inserts a section of thick bamboo including inserting, inserts the opening end department of section of thick bamboo grafting at the sensor housing, and the installation component is installed to the inside bottom of inserting a section of thick bamboo, and the installation component runs through to peg graft and has the detecting head.

Furthermore, the bottom end of the inner wall of the inserting cylinder is provided with an internal thread, the inside of the inserting cylinder is vertically inserted with a sealing sleeve, and the sealing sleeve is fixed on the inner wall of the inserting cylinder.

And then seted up the internal thread through the inner wall bottom of inserting a section of thick bamboo, the inside vertical grafting of inserting a section of thick bamboo has the seal cover, and the seal cover is fixed on the inner wall of inserting a section of thick bamboo to sealing connection fixes in the sensor housing.

Further, a plurality of grooves are uniformly and vertically formed in the outer circumference of the inserting cylinder, and sealing rings are sleeved in the grooves of the inserting cylinder.

And then evenly vertically seted up a plurality of recesses on inserting a section of thick bamboo's the outer circumference, all overlap in a plurality of recesses of inserting a section of thick bamboo and be equipped with the sealing ring to the body improves the nature, avoids appearing the seepage.

Further, the installation component includes the spiro union sleeve, and the top of spiro union sleeve bonds and has sealed the pad, and the jack has been seted up in the vertical run-through in spiro union sleeve's middle part, bonds in the spiro union sleeve's jack and has the rubber sleeve.

And then it has sealed the pad to bond through the top of spiral shell sleeve, and the jack has been seted up in the vertical running through in spiral shell sleeve's middle part, bonds in spiral shell sleeve's jack and has the rubber sleeve to convenient sealed fixed improves the stability of using the grafting.

Furthermore, the detecting head penetrates through and is inserted into a rubber sleeve of the screw sleeve, and the screw sleeve is assembled and connected with an internal thread in the inserting cylinder.

And then run through the grafting in the rubber sleeve of spiral shell sleeve through the detecting head, spiral shell sleeve and the internal thread screw thread assembled connection who inserts in the section of thick bamboo to make things convenient for assembled connection, improve the leakproofness of using.

Furthermore, a plurality of sealing grooves are formed in the bottom of the inner wall of the sensor shell, and the sealing grooves of the sensor shell are in clamping fit with the sealing rings.

And then set up a plurality of seal grooves through the inner wall bottom of sensor housing, the seal groove and the sealing ring joint cooperation of sensor housing to improve the leakproofness of equipment.

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

When the miniature precise pressure sensor is used, the detecting head penetrates through and is inserted in an inserting cylinder of the sealing component, the bottom end of the inserting cylinder is connected with the mounting component, the detecting head is assembled in an internal thread of the inserting cylinder by utilizing a screw sleeve screw thread, the detecting head penetrates through and is inserted in a sealing sleeve in the inserting cylinder and a rubber pad and a sealing pad of the screw sleeve, so that the sealing component, the mounting component and the detecting head are connected in a sealing way, then the inserting cylinder is inserted in an opening end of a sensor shell and is sealed and limited by the sealing ring, the sealing performance of the detection head and the shell encapsulation of the miniature pressure sensor can be ensured, the service life is prolonged, the structural and encapsulation process reasons of the existing miniature pressure sensor are overcome, the sealing effect of the joint between the detection head and the shell is poor, water drops or oil easily enters the shell from the joint to cause short circuit of devices in the shell, the service life of the pressure sensor is influenced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of an exploded structure of the present invention;

FIG. 3 is an exploded view of a seal assembly in an embodiment of the present invention;

fig. 4 is an exploded view of a mounting assembly in an embodiment of the utility model.

In the figure: 1. a sensor housing; 2. a seal assembly; 21. inserting a cylinder; 22. an internal thread; 23. a seal ring; 24. sealing sleeves; 3. mounting the component; 31. a screw sleeve; 32. a gasket; 33. a rubber sleeve; 4. a probe head.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1, 2, 3 and 4, a miniature precision pressure sensor includes a sensor housing 1, one end of the sensor housing 1 is an open end, the sensor housing further includes a sealing component 2 and an installation component 3, the sealing component 2 is disposed at the open end of the sensor housing 1, the sealing component 2 includes an insertion tube 21, the insertion tube 21 is inserted into the open end of the sensor housing 1, the installation component 3 is installed at the bottom end inside the insertion tube 21, and the installation component 3 is inserted with a detection head 4.

When the miniature precise pressure sensor is used, the detection head 4 penetrates through and is inserted into the insertion barrel 21 of the sealing assembly 2, the mounting assembly 3 is connected to the bottom end of the insertion barrel 21, the detection head 4 is assembled in the internal thread 22 of the insertion barrel 21 through the screw sleeve 31 in a threaded manner, the detection head 4 penetrates through and is inserted into the sealing sleeve 24 in the insertion barrel 21, the rubber pad 33 of the screw sleeve 31 and the sealing pad 32, the sealing assembly 2, the mounting assembly 3 and the detection head 4 are connected in a sealing manner, the insertion barrel 21 is inserted into the opening end of the sensor shell 1, and the sealing ring 23 is used for sealing and limiting, so that the sealing performance of the detection head and the shell packaging of the miniature pressure sensor can be guaranteed, and the service life is prolonged.

Referring to fig. 3, the bottom end of the inner wall of the insertion tube 21 is provided with an internal thread 22, a sealing sleeve 24 is vertically inserted into the insertion tube 21, and the sealing sleeve 24 is fixed on the inner wall of the insertion tube 21.

Furthermore, the bottom end of the inner wall of the insertion tube 21 is provided with an internal thread 22, a sealing sleeve 24 is vertically inserted into the insertion tube 21, and the sealing sleeve 24 is fixed on the inner wall of the insertion tube 21, so that the sealing sleeve is fixed in the sensor shell 1 in a sealing connection manner.

Referring to fig. 3, a plurality of grooves are uniformly and vertically formed on the outer circumference of the insert cylinder 21, and a sealing ring 23 is sleeved in each of the plurality of grooves of the insert cylinder 21.

And then evenly vertically seted up a plurality of recesses on the outer circumference through inserting a section of thick bamboo 21, all overlap in a plurality of recesses of inserting a section of thick bamboo 21 and be equipped with sealing ring 23 to the body improves the nature, avoids appearing the seepage.

Referring to fig. 4, the mounting assembly 3 includes a screw sleeve 31, a sealing gasket 32 is bonded to the top end of the screw sleeve 31, an insertion hole is vertically formed in the middle of the screw sleeve 31, and a rubber sleeve 33 is bonded to the insertion hole of the screw sleeve 31.

And then there is sealed the pad 32 through the top bonding of spiral shell sleeve 31, and the jack has been seted up in the vertical run-through in middle part of spiral shell sleeve 31, and it has rubber sleeve 33 to bond in the jack of spiral shell sleeve 31 to convenient sealed fixed improves the stability of using the grafting.

Referring to fig. 4, the probe 4 is inserted into the rubber sleeve 33 of the screw sleeve 31, and the screw sleeve 31 is connected to the internal thread 22 of the insertion tube 21.

And then the detecting head 4 penetrates through and is inserted in the rubber sleeve 33 of the screw sleeve 31, and the screw sleeve 31 is in threaded assembly connection with the internal thread 22 in the insertion cylinder 21, so that the assembly connection is convenient, and the use tightness is improved.

Referring to fig. 4, a plurality of sealing grooves are formed at the bottom of the inner wall of the sensor housing 1, and the sealing grooves of the sensor housing 1 are in clamping fit with the sealing rings 23.

And then set up a plurality of seal grooves through the inner wall bottom of sensor housing 1, sensor housing 1's seal groove and the cooperation of sealing ring 23 joint to improve the leakproofness of equipment.

The working principle is as follows: when the miniature precise pressure sensor is used, the detection head 4 penetrates through and is inserted into the insertion barrel 21 of the sealing assembly 2, the mounting assembly 3 is connected to the bottom end of the insertion barrel 21, the detection head 4 is assembled in the internal thread 22 of the insertion barrel 21 through the screw sleeve 31 in a threaded manner, the detection head 4 penetrates through and is inserted into the sealing sleeve 24 in the insertion barrel 21 and the rubber pad 33 and the sealing pad 32 of the screw sleeve 31, the sealing assembly 2, the mounting assembly 3 and the detection head 4 are connected in a sealing manner, and then the insertion barrel 21 is inserted into the opening end of the sensor shell 1 and is limited in a sealing manner through the sealing ring 23.

The device obtained by the design can basically meet the requirement of the use of the miniature precise pressure sensor which can ensure the sealing performance of the detection head and the shell of the miniature pressure sensor and prolong the service life, but the designer further improves the device with the aim of further improving the function.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a miniature accurate pressure sensor, includes sensor housing (1), the one end of sensor housing (1) sets up to the open end, its characterized in that: still include seal assembly (2) and installation component (3), seal assembly (2) set up the opening end department of sensor housing (1), seal assembly (2) are including inserting a section of thick bamboo (21), it is in to insert a section of thick bamboo (21) peg graft the opening end department of sensor housing (1), the inside bottom of inserting a section of thick bamboo (21) is installed installation component (3), installation component (3) run through the grafting and have detecting head (4).

2. The miniature precise pressure sensor according to claim 1, wherein the bottom end of the inner wall of the insert cylinder (21) is provided with an internal thread (22), a sealing sleeve (24) is vertically inserted into the insert cylinder (21), and the sealing sleeve (24) is fixed on the inner wall of the insert cylinder (21).

3. The miniature precise pressure sensor according to claim 2, wherein a plurality of grooves are uniformly and vertically formed on the outer circumference of the insert cylinder (21), and a sealing ring (23) is sleeved in each groove of the insert cylinder (21).

4. The miniature precise pressure sensor according to claim 1, wherein the mounting assembly (3) comprises a screw sleeve (31), a sealing gasket (32) is bonded on the top end of the screw sleeve (31), a jack is vertically arranged in the middle of the screw sleeve (31) in a penetrating manner, and a rubber sleeve (33) is bonded in the jack of the screw sleeve (31).

5. The miniature precision pressure sensor according to any one of claims 1 to 4, wherein the probe (4) is inserted in a rubber sleeve (33) of a screw sleeve (31) in a penetrating manner, and the screw sleeve (31) is in threaded assembly connection with an internal thread (22) in the insertion barrel (21).

6. The miniature precise pressure sensor according to claim 3, wherein the bottom of the inner wall of the sensor housing (1) is provided with a plurality of sealing grooves, and the sealing grooves of the sensor housing (1) are in clamping fit with the sealing ring (23).