CN218671368U

CN218671368U - Pressure sensor with sealing structure

Info

Publication number: CN218671368U
Application number: CN202223440434.2U
Authority: CN
Inventors: 许如臣; 许海铨; 许家玮; 鲍尾俤
Original assignee: Fuzhou Yehui Electronics Co ltd
Current assignee: Fuzhou Yehui Electronics Co ltd
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-03-21
Anticipated expiration: 2032-12-22

Abstract

The utility model discloses a pressure sensor with seal structure, the connecting plate comprises a connecting plate, connecting plate top outer wall is provided with the hexagonal piece, hexagonal piece top outer wall is provided with the installation head, connecting plate bottom outer wall is fixed with the connecting cylinder, the connecting plate, hexagonal piece and connecting cylinder are the integrated into one piece structure, the connecting cylinder inner wall is provided with the plastic packaging piece, the plastic packaging piece inner wall is provided with the sensor body, the sensor body runs through in plastic packaging piece top outer wall, sensor body outer wall is provided with the protecting tube, the protecting tube outer wall is fixed with the backing plate, backing plate top outer wall is fixed with first annular arch and the annular arch of second, hexagonal piece and installation head bottom outer wall are opened there is spacing hole, the connecting cylinder inner wall has spacing section of thick bamboo through threaded connection. The utility model discloses inside avoiding outside moisture to get into the connecting cylinder through the gap between backing plate and the connecting plate, cause the damage to placing at the inside components and parts of connecting cylinder, improve the life of sensor.

Description

Pressure sensor with sealing structure

Technical Field

The utility model relates to a sensor technical field especially relates to a pressure sensor with seal structure.

Background

With the continuous development of society and the increasing living standard of people, a pressure sensor is needed to be used for monitoring required pressure parameters in various fields. The pressure sensor is a basic electronic component, plays a very important role in the development of the society, the MEMS pressure sensor is a thin film element, deforms when receiving pressure, can measure the deformation by using a strain gauge, and can also measure the change of the distance between two surfaces by capacitance sensing, both of which are popular, the tire pressure monitoring system uses a stronger piezoresistive method, the pressure sensitive chip typically has a thin differential pressure sensing film, and is easy to damage high temperature, corrosive substances and the like in the gas to be measured in the pressure measuring process, so when the pressure sensor is installed and used, a reliable sealing structure is needed to seal the pressure sensor.

Through the retrieval, chinese patent application number is CN 202021262460.9's patent discloses a MEMS pressure sensor subassembly, including the mount pad, the mount pad top is equipped with the mounting groove that supplies MEMS pressure sensor installation, blind hole form, but above-mentioned technical scheme is owing to do not set up the corresponding mechanism that can effectually seal the sensor body in the installation position of sensor, and the sensor is carrying out the during operation, and outside moisture is direct directly to contact with other positions except that the detecting head of sensor easily, leads to the easy emergence corrosion of components and parts on the sensor, consequently still has the lower problem of sensor life.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art, and providing a pressure sensor with a sealing structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a pressure sensor with seal structure, which comprises a connecting plate, connecting plate top outer wall is provided with the hexagonal piece, hexagonal piece top outer wall is provided with the installation head, connecting plate bottom outer wall is fixed with the connecting cylinder, the connecting plate, hexagonal piece and connecting cylinder are the integrated into one piece structure, the connecting cylinder inner wall is provided with the plastic envelope piece, the plastic envelope piece inner wall is provided with the sensor body, the sensor body runs through in plastic envelope piece top outer wall, sensor body outer wall is provided with the protecting tube, the protecting tube outer wall is fixed with the backing plate, backing plate top outer wall is fixed with first annular arch and the annular arch of second, hexagonal piece and installation head bottom outer wall are opened there is spacing hole.

As a further aspect of the present invention: the inner wall of the connecting cylinder is connected with a limiting cylinder through threads, the outer wall of the bottom of the sensor body is provided with a data signal line, and the data signal line penetrates through the outer wall of the bottom of the plastic package block.

As a further aspect of the present invention: the plastic package piece bottom outer wall is fixed with the buffering connecting block, and buffering connecting block bottom outer wall is fixed with the mounting panel, and data signal line runs through in mounting panel bottom outer wall.

As a further aspect of the present invention: the outer walls of the mounting head and the connecting cylinder are respectively provided with an external thread.

As a further aspect of the present invention: the outer wall of the bottom of the connecting plate is provided with a first clamping groove and a second clamping groove.

As a further aspect of the present invention: the outer wall of the limiting cylinder is provided with a plurality of plane cutting grooves.

As a further aspect of the present invention: the inner wall of the limiting cylinder is fixed with a stop block, the outer wall of the top of the stop block is provided with a wire groove, and the data signal wire is arranged on the inner wall of the wire groove.

The utility model has the advantages that:

1. the sensor body contacts with external environment through spacing hole, thereby detect relevant pressure, this moment support first cyclic annular arch and the cyclic annular arch of second on connecting plate bottom outer wall can shelter from the gap between backing plate and the connecting plate bottom outer wall, avoid outside moisture to get into the connecting cylinder through the gap between backing plate and the connecting plate inside, cause the damage to placing at the inside components and parts of connecting cylinder, fix simultaneously that the plastic envelope piece at sensor body outer wall can play fine protection and sealed effect, further improve the holistic life of sensor body.

2. After the plastic package block is integrally inserted into the connecting cylinder, the limiting cylinder can be fixed on the inner wall of the connecting cylinder through threads, and the plastic package block inserted into the connecting cylinder is integrally supported and limited; the buffer connection block can buffer the mounting plate supported at the bottom of the mounting plate, so that the plastic package block at the top of the limiting cylinder is prevented from being excessively extruded, and the overall stability of the sealing structure is improved.

3. When the backing plate supports the bottom outer wall at the connecting plate under the extrusion of a spacing section of thick bamboo, the first annular arch at backing plate top can block on the first draw-in groove of connecting plate bottom, and the annular arch one side inner wall of second then can block on the outer wall that the second draw-in groove part was visited out in spacing hole to let the backing plate whole through the protruding inseparable card of first annular arch and the annular arch of second in connecting plate bottom, improve the sealed effect of this structure.

Drawings

Fig. 1 is a schematic front view of a pressure sensor with a sealing structure according to the present invention;

fig. 2 is an exploded view of a pressure sensor with a sealing structure according to the present invention;

fig. 3 is a schematic diagram of a pad structure of a pressure sensor with a sealing structure according to the present invention;

fig. 4 is a schematic structural diagram of a connecting cylinder of a pressure sensor with a sealing structure according to the present invention;

fig. 5 is a schematic structural diagram of a limiting cylinder of a pressure sensor with a sealing structure according to the present invention.

In the figure: the sensor comprises a connecting plate 1, a hexagonal block 2, a mounting head 3, a connecting barrel 4, a limiting barrel 5, a data signal line 6, a planar cutting groove 7, a mounting plate 8, a backing plate 9, a first annular bulge 10, a protective pipe 11, a second annular bulge 12, a buffer connecting block 13, a sensor body 14, a first clamping groove 15, a second clamping groove 16, a limiting hole 17, a stop block 18, a wire guide groove 19 and a plastic package block 20.

Detailed Description

The technical solution of the present patent will be further described in detail with reference to the following embodiments.

Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.

Example 1

A pressure sensor with a sealing structure is shown in figures 1-5 and comprises a connecting plate 1, wherein a hexagonal block 2 is arranged on the outer wall of the top of the connecting plate 1, an installing head 3 is arranged on the outer wall of the top of the hexagonal block 2, a connecting cylinder 4 is fixed on the outer wall of the bottom of the connecting plate 1, the hexagonal block 2 and the connecting cylinder 4 are of an integrally formed structure, a plastic package block 20 is inserted into the inner wall of the connecting cylinder 4, a sensor body 14 is arranged on the inner wall of the plastic package block 20, the sensor body 14 penetrates through the outer wall of the top of the plastic package block 20, a protective pipe 11 is sleeved on the outer wall of the sensor body 14, a backing plate 9 is fixed on the outer wall of the protective pipe 11, a first annular bulge 10 and a second annular bulge 12 are fixed on the outer wall of the top of the backing plate 9, and limiting holes 17 are formed in the outer walls of the bottoms of the hexagonal block 2 and the installing head 3; the plastic package piece 20 can wholly seal and fix the sensor body 14, the protective tube 11 can be sleeved on the sensing end of the sensor body 14 extending out of the outer wall of the plastic package piece 20, the protective tube can be shielded and protected, the plastic package piece 20 and the top cushion plate 9 are integrally inserted into the connecting cylinder 4, the first annular bulge 10 and the second annular bulge 12 on the outer wall of the top of the cushion plate 9 can be supported on the outer wall of the bottom of the connecting plate 1, the protective tube 11 and the sensor body 14 can be in contact with the external environment through the limiting hole 17, relevant pressure is detected, the first annular bulge 10 and the second annular bulge 12 on the outer wall of the bottom of the connecting plate 1 can shield the gap between the cushion plate 9 and the outer wall of the bottom of the connecting plate 1 at the moment, external moisture is prevented from entering the connecting cylinder 4 through the gap between the cushion plate 9 and the connecting plate 1, damage to components placed inside the connecting cylinder 4 is caused, meanwhile, the plastic package piece 20 fixed on the outer wall of the sensor body 14 can play a good protective and sealing effect, the service life of the whole sensor body 14 is further prolonged, and the sensor body 14 is a pressure sensor.

As shown in fig. 1-4, the inner wall of the connecting cylinder 4 is connected with a limiting cylinder 5 through a thread, the outer wall of the bottom of the sensor body 14 is provided with a data signal line 6, and the data signal line 6 penetrates through the outer wall of the bottom of the plastic package block 20; after the plastic package block 20 is integrally inserted into the connecting cylinder 4, the limiting cylinder 5 can be fixed on the inner wall of the connecting cylinder 4 through threads, and the plastic package block 20 inserted into the connecting cylinder 4 is integrally supported and limited.

As shown in fig. 2, a buffer connecting block 13 is fixed on the outer wall of the bottom of the plastic package block 20, a mounting plate 8 is fixed on the outer wall of the bottom of the buffer connecting block 13, and the data signal line 6 penetrates through the outer wall of the bottom of the mounting plate 8; the buffer connecting block 13 can buffer the mounting plate 8 supported at the bottom of the mounting plate 8, so that the plastic package block 20 at the top of the limiting cylinder 5 is prevented from being excessively extruded, and the overall stability of the sealing structure is improved.

As shown in fig. 1-3, the outer walls of the mounting head 3 and the connecting cylinder 4 are respectively provided with external threads; workers can conveniently install the sensor through the external threads on the outer walls of the installation head 3 and the connecting cylinder 4;

as shown in fig. 4, the outer wall of the bottom of the connecting plate 1 is provided with a first clamping groove 15 and a second clamping groove 16; backing plate 9 supports under the extrusion of a spacing section of thick bamboo 5 when the bottom outer wall at connecting plate 1, the first annular arch 10 at backing plate 9 top can block on the first draw-in groove 15 of connecting plate 1 bottom, and the annular arch 12 one side inner wall of second then can block on the outer wall that spacing hole 17 stretches out second draw-in groove 16 part to let backing plate 9 wholly through the inseparable card of first annular arch 10 and the annular arch 12 of second in connecting plate 1 bottom, improve the sealed effect of this structure.

As shown in fig. 5, the outer wall of the limiting cylinder 5 is provided with a plurality of plane cutting grooves 7; staff's accessible plane grooving 7 is convenient uses instrument such as spanner to install and dismantle spacing section of thick bamboo 5, and accessible hexagonal piece 2 uses instrument such as spanner to install and dismantle installation head 3 simultaneously.

The working principle is as follows: the plastic envelope piece 20 can wholly seal and fix sensor body 14, protective tube 11 can overlap on sensor body 14 stretches out the response of plastic envelope piece 20 outer wall and serves, shelter from the protection to it, with plastic envelope piece 20 together with the inside back of backing plate 9 whole insertion connecting cylinder 4 at top, the annular arch 10 of first cyclic annular and the annular arch 12 of second of backing plate 9 top outer wall can support on the bottom outer wall of connecting plate 1, protective tube 11 and sensor body 14 then can contact through spacing hole 17 and external environment, thereby detect relevant pressure, support first annular arch 10 and the annular arch 12 of second on connecting plate 1 bottom outer wall this moment and can shelter from the gap between backing plate 9 and the connecting plate 1 bottom outer wall, avoid outside moisture to get into inside connecting cylinder 4 through the gap between backing plate 9 and the connecting plate 1.

After wholly inserting plastic envelope piece 20 into connecting cylinder 4, can fix a spacing section of thick bamboo 5 at 4 inner walls of connecting cylinder through the screw thread, the first annular arch 10 at backing plate 9 top can block on the first draw-in groove 15 of 1 bottom of connecting plate, and the annular arch 12 one side inner wall of second then can block on the outer wall that spacing hole 17 stretches out 16 parts of second draw-in groove to let backing plate 9 wholly through the inseparable card in 1 bottom of connecting plate of first annular arch 10 and the annular arch 12 of second.

Example 2

A pressure sensor having a seal structure, as shown in fig. 5, this embodiment is modified from embodiment 1 as follows: a stop block 18 is fixed on the inner wall of the limiting cylinder 5, a wire groove 19 is formed in the outer wall of the top of the stop block 18, and the data signal wire 6 is inserted into the inner wall of the wire groove 19; the stopper 18 can be matched with the top of the limiting cylinder 5 to extrude the plastic package block 20, the wire groove 19 can limit and seal the data signal wire 6 which passes through the limiting cylinder 5 and is connected with external equipment, and the sealing and fixing effect of the limiting cylinder 5 on the bottom of the connecting cylinder 4 is improved.

The working principle is as follows: the stop block 18 can be matched with the top of the limiting cylinder 5 to extrude the plastic package block 20, and the wire groove 19 can limit and seal the data signal wire 6 which penetrates through the limiting cylinder 5 and is connected with external equipment.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a pressure sensor with seal structure, including connecting plate (1), a serial communication port, connecting plate (1) top outer wall is provided with hexagonal piece (2), hexagonal piece (2) top outer wall is provided with installation head (3), connecting plate (1) bottom outer wall is fixed with connecting cylinder (4), connecting plate (1), hexagonal piece (2) and connecting cylinder (4) are integrated into one piece structure, connecting cylinder (4) inner wall is provided with plastic envelope piece (20), plastic envelope piece (20) inner wall is provided with sensor body (14), sensor body (14) run through in plastic envelope piece (20) top outer wall, sensor body (14) outer wall is provided with protecting tube (11), protecting tube (11) outer wall is fixed with backing plate (9), backing plate (9) top outer wall is fixed with first annular arch (10) and the annular arch (12) of second, spacing hole (17) are opened to hexagonal piece (2) and installation head (3) bottom outer wall.

2. The pressure sensor with the sealing structure according to claim 1, wherein the inner wall of the connecting cylinder (4) is connected with a limiting cylinder (5) through a thread, the outer wall of the bottom of the sensor body (14) is provided with a data signal line (6), and the data signal line (6) penetrates through the outer wall of the bottom of the plastic package block (20).

3. The pressure sensor with the sealing structure according to claim 2, wherein the outer wall of the bottom of the plastic package block (20) is fixed with a buffer connecting block (13), the outer wall of the bottom of the buffer connecting block (13) is fixed with a mounting plate (8), and the data signal line (6) penetrates through the outer wall of the bottom of the mounting plate (8).

4. A pressure sensor having a sealing structure according to claim 3, wherein the mounting head (3) and the outer wall of the connecting cylinder (4) are provided with external threads, respectively.

5. The pressure sensor with a sealing structure according to claim 4, wherein the connecting plate (1) is provided with a first locking groove (15) and a second locking groove (16) on the outer wall of the bottom.

6. A pressure sensor with a sealing structure according to claim 5, characterized in that the outer wall of the limiting cylinder (5) is provided with a plurality of planar slots (7).

7. The pressure sensor with the sealing structure according to claim 6, wherein a stopper (18) is fixed on the inner wall of the limiting cylinder (5), a wire guide groove (19) is formed on the outer wall of the top of the stopper (18), and the data signal line (6) is arranged on the inner wall of the wire guide groove (19).