CN216212960U

CN216212960U - Single spring deformation triggering structure of micro differential pressure sensor

Info

Publication number: CN216212960U
Application number: CN202122481590.2U
Authority: CN
Inventors: 张慧
Original assignee: Alpha Instrument Technology Shenzhen Co ltd
Current assignee: Alpha Instrument Technology Shenzhen Co ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-04-05
Anticipated expiration: 2031-10-15

Abstract

The utility model discloses a single spring deformation triggering structure of a micro differential pressure sensor, which belongs to the field of micro differential pressure sensors and mainly comprises a shell part, a metal sheet bracket, a range knob, a first spring thimble, a second spring thimble, a main spring, a pressure regulating spring, a pre-tightening spring, a metal sheet, a first contact support and a second contact support. The risk of elastic attenuation of the self-deformation elastic sheet of the traditional differential pressure switch structure is reasonably avoided, and the service efficiency of workers can be effectively improved.

Description

Single spring deformation triggering structure of micro differential pressure sensor

Technical Field

The utility model relates to the field of micro differential pressure sensors, in particular to a single spring deformation triggering structure of a micro differential pressure sensor.

Background

Most of the mechanical structures which cause contact switching connection inside the differential pressure switch on the market at present adopt an assembly mode of combining an elastic sheet and a spring, and the structure is quite complicated and poor in balance, so that labor and energy are wasted during assembly, and operation is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a single-spring deformation triggering structure of a micro differential pressure sensor, which can effectively solve the problems in the background technology.

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

a single spring deformation triggering structure of a micro differential pressure sensor comprises a shell component, wherein a first support is arranged at one side edge of the upper end of the shell component, a second support and a third support are symmetrically arranged on the upper end face of the shell component, a metal sheet support is arranged between the second support and the third support, a main spring is arranged on the first support and the metal sheet support, a first contact support and a second contact support are additionally arranged on the upper end face of the shell component, a metal sheet is connected to the outer side of the metal sheet support, the metal sheet extends into the space between the first contact support and the second contact support to form a contact structure, a pressure regulating spring is arranged at the upper end of the middle section of the main spring, the top end of the pressure regulating spring is connected with a push rod below the center of an elastic diaphragm of a differential pressure switch, and a pre-tightening spring is arranged below the main spring, and a range knob is arranged below the pre-tightening spring and is movably connected with the cylindrical structure at the bottom of the shell component in a threaded mode.

Preferably, the first bracket, the second bracket, the third bracket and the housing component are integrally formed members, and the first bracket is located on a perpendicular bisector of the second bracket and the third bracket.

Preferably, the second support and the third support are both provided with ejector pin through holes, a first spring ejector pin and a second spring ejector pin are respectively and detachably mounted on the second support and the third support through the ejector pin through holes, and the first spring ejector pin and the second spring ejector pin are matched with concave points on two sides of the sheet metal support to tightly press the sheet metal support between the second support and the third support.

Preferably, be equipped with a first support puller structure on the first support, correspond on the sheetmetal support and be equipped with a second support puller structure, main spring is then supported puller structure and second and is supported puller structure and compress tightly.

Preferably, the top that first contact supported is equipped with a switch contact spare No. one of taking first upper contact, the below that first contact supported still is equipped with a lower contact No. one, and is symmetrical, the top that the second contact supported is equipped with a switch contact spare No. two of taking second upper contact, the below that the second contact supported is equipped with a lower contact No. two, then correspond on the both ends upper and lower face of sheetmetal and be equipped with a fast acting contact, No. two fast acting contacts, No. three fast acting contacts and No. four fast acting contacts to the sheetmetal is in between the upper and lower contact that first contact supported and second contact supported.

Preferably, the bottom of the pressure regulating spring is fixedly connected with a main spring upper support, and is clamped on the main spring through the main spring upper support, and similarly, the top of the pre-tightening spring is fixedly connected with a main spring lower support, and is clamped on the main spring through the main spring lower support.

Preferably, a cylindrical structure is arranged below the shell component, and threads are designed on the cylindrical structure and are in threaded fit connection with the range knob to adjust the lifting of the range knob.

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

according to the utility model, the traditional mode that the elastic sheet is combined with the spring to support the deformation structure is changed, and the mechanical pressure difference switch is enabled to realize contact connection and conduction at different positions under different differential pressures by adopting a single spring deformation mode, so that the mechanical complexity is simplified in structure, the mechanical complexity is better realized, the processing technology is simplified, and the stability and the safety of the mechanical pressure difference switch are greatly improved in the service performance. The risk of elastic attenuation of the self-deformation elastic sheet of the traditional differential pressure switch structure is reasonably avoided, and the service efficiency of workers can be effectively improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of a single spring deformation triggering structure of a micro differential pressure sensor according to the present invention;

fig. 2 is a side view of a single spring deformation triggering structure of a micro differential pressure sensor according to the present invention.

In the figure: 1. a housing component; 2. a first bracket; 3. a second bracket; 4. a third support; 5. a first contact support; 6. a second contact support; 7. a sheet metal bracket; 8. a metal sheet; 9. a main spring lower support; 10. a main spring upper support; 11. a range knob; 12. a first switch contact member; 13. a second switch contact member; 14. a first upper contact; 15. a second upper contact; 16. a first lower contact; 17. a second lower contact; 18. a first quick action contact; 19. a second quick action contact; 20. a third quick action contact; 21. a fourth quick action contact; 22. a first spring thimble; 23. a second spring thimble; 24. a main spring; 25. a pressure regulating spring; 26. pre-tightening the spring; 27. a first supporting and jacking structure; 28. the second supporting and jacking structure; 29. a thimble through hole.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the utility model easy to understand, the utility model is further described with the specific embodiments.

As shown in fig. 1-2, a single spring deformation triggering structure of a micro differential pressure sensor comprises a housing member 1, a first support 2 is arranged at one side edge of the upper end of the housing member 1, a second support 3 and a third support 4 are symmetrically arranged on the upper end surface of the housing member 1, a metal sheet support 7 is arranged between the second support 3 and the third support 4, a main spring 24 is arranged between the first support 2 and the metal sheet support 7, a first contact support 5 and a second contact support 6 are further arranged on the upper end surface of the housing member 1, a metal sheet 8 is connected to the outer side of the metal sheet support 7, the metal sheet 8 extends into the space between the first contact support 5 and the second contact support 6 to form a contact structure, a pressure regulating spring 25 is arranged at the upper end of the middle section of the main spring 24, the top end of the pressure regulating spring 25 is connected with a push rod below the center of an elastic diaphragm of a differential pressure switch, a pre-tightening spring 26 is arranged below the main spring 24, a range knob 11 is arranged below the pre-tightening spring 26, and the range knob 11 is movably connected with a cylindrical structure at the bottom of the shell component 1 in a threaded mode.

Example 1:

as shown in fig. 1, the first bracket 2, the second bracket 3, the third bracket 4 and the housing member 1 are integrally formed members, and the first bracket 2 is located on a perpendicular bisector of the second bracket 3 and the third bracket 4; meanwhile, the second support 3 and the third support 4 are both provided with an ejector pin through hole 29, a first spring ejector pin 22 and a second spring ejector pin 23 are respectively and detachably mounted on the second support 3 and the third support 4 through the ejector pin through hole 29, and the first spring ejector pin 22 and the second spring ejector pin 23 are matched with concave points on two sides of the sheet metal support 7 to tightly press the sheet metal support 7 between the second support 3 and the third support 4; in addition, a first supporting and jacking structure 27 is arranged on the first support 2, a second supporting and jacking structure 28 is correspondingly arranged on the sheet metal support 7, and the main spring 24 is pressed by the first supporting and jacking structure 27 and the second supporting and jacking structure 28, so that under the elastic action of the main spring 24, the sheet metal support 7 can rotate along the axial connecting line micro-resistance of the first spring ejector pin 22 and the second spring ejector pin 23.

Example 2:

on the basis of embodiment 1, as shown in fig. 1-2, a main spring upper support 10 is fixedly connected to the bottom of the pressure regulating spring 25 and clamped on the main spring 24 through the main spring upper support 10, and similarly, a main spring lower support 9 is fixedly connected to the top of the pre-tightening spring 26 and clamped on the main spring 24 through the main spring lower support 9, a cylindrical structure is arranged below the housing component 1, and threads are designed on the cylindrical structure to be in threaded fit connection with the range knob 11 to adjust the lifting of the range knob 11, so that the lifting of the pre-tightening spring 26 is adjusted, and the purpose of adjusting the range is achieved.

Example 3:

on the basis of embodiment 2, as shown in fig. 1-2, a first switch contact piece 12 with a first upper contact 14 is arranged above the first contact support 5, a first lower contact 16 is further arranged below the first contact support 5, the first switch contact piece and the second switch contact piece are symmetrically arranged above the second contact support 6, a second lower contact 17 is arranged below the second contact support 6, a first quick action contact 18, a second quick action contact 19, a third quick action contact 20 and a fourth quick action contact 21 are correspondingly arranged on the upper and lower surfaces of two ends of the metal sheet 8, and the metal sheet 8 is located between the upper and lower contacts of the first contact support 5 and the second contact support 6.

In practical use, an elastic diaphragm is arranged above the shell component 1 to divide the whole differential pressure switch cavity into a high-pressure cavity and a low-pressure cavity, when the pressure difference between the high pressure chamber and the low pressure chamber is generated during the use process, the elastic membrane can deform, so that the push rod below the center of the elastic membrane moves downwards, and further the pressure regulating spring 25 connected with the push rod generates compression deformation, due to the force transmission, the upper bracket 10 of the main spring connected with the lower end of the pressure regulating spring 25 will displace downwards, further pressing the main spring 24 to deform under the pressing action of the pressing structure 27 of the first bracket 2 and the pressing structure 28 of the sheet metal bracket 7, and deforming downwards from the original upward arching state to disconnect the first quick action contact 18 and the second quick action contact 19 on the sheet metal 8 connected with the first upper contact 14 and the second upper contact 15 on the original first switch contact piece 12 and the second switch contact piece 13; with the continuous pressing of the pressure regulating spring 25, the main spring 24 is continuously compressed until instantaneous deformation occurs, a downward arching state is formed, and the associated sheet metal support 7 rotates downward along the axial connecting line of the first spring thimble 22 and the second spring thimble 23, so that the first lower contact 16 and the second lower contact 17 on the first contact support 5 and the second contact support 6 are in contact with the third quick action contact 20 and the fourth quick action contact 21 on the sheet metal 8; when the pressure difference between the high-pressure chamber and the low-pressure chamber approaches to the original state change, the pre-tightening spring 26 extends upwards to deform, so that the lower support 9 of the main spring moves upwards, and further the main spring 24 is compressed continuously until instantaneous deformation occurs, an upwards arched state, namely an original switch state, is formed, and the metal sheet 8 is restored to the original contact state.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a little differential pressure sensor's single spring deformation trigger structure which characterized in that: the contact-type touch screen comprises a shell component (1), a first support (2) is arranged on one side edge of the upper end of the shell component (1), a second support (3) and a third support (4) are symmetrically arranged on the upper end face of the shell component (1), a metal sheet support (7) is arranged between the second support (3) and the third support (4), a main spring (24) is arranged on the first support (2) and the metal sheet support (7), a first contact support (5) and a second contact support (6) are additionally arranged on the upper end face of the shell component (1), a metal sheet (8) is connected to the outer side of the metal sheet support (7), the metal sheet (8) stretches into a contact structure formed between the first contact support (5) and the second contact support (6), and a pressure regulating spring (25) is arranged at the upper end of the middle section of the main spring (24), the top and the central below push rod of differential pressure switch elastic diaphragm of pressure regulating spring (25) are connected, the below of main spring (24) is equipped with a pretension spring (26), the below of pretension spring (26) is equipped with a range knob (11), range knob (11) are through the cylinder structure swing joint of screw thread mode and casing part (1) bottom.

2. The single-spring deformation trigger structure of the micro differential pressure sensor according to claim 1, wherein: the first bracket (2), the second bracket (3), the third bracket (4) and the shell component (1) are integrally formed members, and the first bracket (2) is positioned on a perpendicular bisector of the second bracket (3) and the third bracket (4).

3. The single spring deformation trigger structure of the micro differential pressure sensor according to claim 2, wherein: a thimble through hole (29) has all been seted up on second support (3) and third support (4), through thimble through hole (29), second support (3) and third support (4) demountable installation have a spring thimble (22) No. two and spring thimble (23) No. two respectively, spring thimble (22) No. two and spring thimble (23) and the concave point cooperation of sheetmetal support (7) both sides compress tightly sheetmetal support (7) between second support (3) and third support (4).

4. The single-spring deformation trigger structure of the micro differential pressure sensor according to claim 3, wherein: be equipped with a first support puller structure (27) on first support (2), correspond on sheetmetal support (7) and be equipped with a second support puller structure (28), mainspring (24) then is supported puller structure (27) and second and is supported puller structure (28) and compress tightly.

5. The single-spring deformation trigger structure of the micro differential pressure sensor according to claim 1, wherein: the top that first contact supported (5) is equipped with a switch contact spare (12) of taking first upper contact (14), the below that first contact supported (5) still is equipped with one lower contact (16), symmetrical, the top that second contact supported (6) is equipped with one and takes second upper contact (15) switch contact spare (13) No. two, the below that second contact supported (6) is equipped with one second lower contact (17), then correspond on the both ends of sheetmetal (8) about and be equipped with quick action contact (18), No. two quick action contact (19), No. three quick action contact (20) and No. four quick action contact (21) to sheetmetal (8) are in between the upper and lower contact of first contact support (5) and second contact support (6).

6. The single-spring deformation trigger structure of the micro differential pressure sensor according to claim 1, wherein: the bottom fixedly connected with one main spring upper portion support (10) of pressure regulating spring (25) to block on main spring (24) through main spring upper portion support (10), likewise, the top fixedly connected with one main spring lower part support (9) of pretension spring (26) to block on main spring (24) through main spring lower part support (9).

7. The single-spring deformation trigger structure of the micro differential pressure sensor according to claim 1, wherein: the lower surface of the shell component (1) is provided with a cylindrical structure, and threads are designed on the cylindrical structure and are in threaded fit connection with the range knob (11) to adjust the lifting of the range knob (11).