CN113514190A

CN113514190A - Anti-falling barometer

Info

Publication number: CN113514190A
Application number: CN202110794597.1A
Authority: CN
Inventors: 王斌; 卢卡
Original assignee: Ningbo Bravo Manufacturing Of Inflators And Accessories Co ltd
Current assignee: Ningbo Bravo Manufacturing Of Inflators And Accessories Co ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2021-10-19

Abstract

The invention provides an anti-falling barometer, which comprises: a housing provided with an air inlet joint; the piston assembly is arranged in the shell, and the first end of the piston assembly is elastically sealed with the air inlet joint under the bias force; the side surface of the sector dial is provided with a positioning rotating shaft and a rotating deflector rod; the cover plate comprises a reading opening, the cover plate covers the fan-shaped dial, and at least one scale reading is exposed from the reading opening; when the external air flow overcomes the bias force to jack the piston assembly, the second end of the piston assembly is jacked and drives the rotary deflector rod to drive the fan-shaped scale to rotate around the positioning rotating shaft, and scale reading exposed out of the reading opening is replaced. The invention adopts the structure of the deflector rod turntable, has good anti-falling capability, cannot be invalid or inaccurate due to vibration, and greatly prolongs the service life of the product and the accuracy after long-term use.

Description

Anti-falling barometer

Technical Field

The invention relates to the field of gas pressure detection, in particular to an anti-falling barometer.

Background

The working principle of the pressure gauge is that the pressure deformation is transmitted to the pointer through the elastic deformation of sensitive elements (Bourdon tube, bellows and bellows) in the gauge and then through a conversion mechanism of a movement in the gauge, so that the pointer is caused to rotate to display the pressure. The spring tube is divided into a type of a shaped tube, a coil spring tube, a spiral tube and the like, and generally adopts a blank tube made of cold-work hardening type material, has high plasticity in an annealing state, and obtains high elasticity and strength after cold-work hardening and qualitative treatment through pressure processing. Under the action of the pressure in the inner cavity, the spring tube can convert the pressure into the elastic displacement of the free end of the spring tube conveniently by utilizing the elastic characteristic of the spring tube. The measuring range of the spring tube is generally that the sensitive element of the diaphragm is a round diaphragm with waves, one side of the diaphragm is pressed by a measuring medium, so that the tiny bending deformation generated by the diaphragm can be used for indirectly measuring the pressure of the medium, and the magnitude of the pressure is displayed by a pointer.

The pressure gauge for detecting air pressure is manufactured through a thread transmission structure in the current market, a transmission part mainly comprises a transmission shaft and a transmission seat, the transmission seat can move up and down under the action of air pressure drive introduced from an introduction hole and a support spring through thread matching between the transmission shaft and the transmission seat, the transmission seat is converted into rotary motion of the transmission shaft, and finally, a pointer is driven to rotate. Such gear transmissions and spring tubes are not conducive to shock resistance. Drop tests can find that the pressure gauge of the screw transmission in the prior art is easy to jump teeth, and the copper spring tube is easy to deform.

Accordingly, the present invention provides an anti-crash barometer.

Disclosure of Invention

Aiming at the problems in the prior art, the invention aims to provide an anti-falling barometer, which overcomes the difficulty in the prior art, adopts a deflector rod turntable structure, has good anti-falling capability, cannot be invalid or inaccurate due to vibration, and greatly prolongs the service life of a product and the accuracy after long-term use.

An embodiment of the present invention provides an anti-falling barometer, including:

the shell is provided with an air inlet joint;

a piston assembly disposed within the housing, a first end of the piston assembly being biased to resiliently seal the inlet fitting;

the side surface of the sector dial is provided with a positioning rotating shaft and a rotating deflector rod; and

the cover plate comprises a reading opening, the cover plate covers the fan-shaped dial, and at least one scale reading is exposed from the reading opening;

when the external air flow overcomes the bias force to jack the piston assembly, the second end of the piston assembly is jacked and drives the rotary deflector rod to drive the fan-shaped scale to rotate around the positioning rotating shaft, and the scale reading exposed out of the reading opening is replaced.

Preferably, the scale band is provided with a plurality of scale readings arranged at intervals along the arc direction.

Preferably, the rotation plane of the sector dial is parallel to the direction of the biasing force.

Preferably, the two positioning rotating shafts are respectively connected to two sides of the circle center position of the sector dial.

Preferably, the rotary lever is parallel to the positioning rotation shaft.

Preferably, the piston assembly comprises:

a piston including a piston portion and a piston rod, the piston portion being urged against the inlet fitting by a spring;

a guide board, connect in the piston rod, the guide board is equipped with a transmission guide way, rotatory driving lever by spacing in the transmission guide way, follow the guide board by when outside air current jack-up, the transmission guide way transmission rotatory driving lever rotates fan-shaped dial.

Preferably, the guide plate is provided with a piston guide groove, the piston guide groove extends along the length direction of the piston rod, and the positioning rotating shaft is limited in the piston guide groove.

Preferably, the extending direction of the piston guide groove and the extending direction of the transmission guide groove are perpendicular to each other.

Preferably, the method further comprises the following steps: and the first side of the sealing film is abutted and sealed with the through hole of the air inlet joint.

Preferably, the method further comprises the following steps: an inner shell; the inner sleeve is arranged inside the outer shell, the piston assembly is arranged in the inner shell, and two ends of the spring are respectively abutted to the second side of the sealing membrane and one side of the inner shell, which deviates from the air inlet joint.

The anti-falling barometer can avoid using non-shock-resistant mechanisms such as gear transmission and a spring tube, adopts a driving lever turntable structure, has good anti-falling capability, cannot be invalid or inaccurate due to vibration, and greatly prolongs the service life of a product and the accuracy after long-term use.

Drawings

Other features, objects and advantages of the present invention will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.

Fig. 1 is a schematic view of an anti-falling barometer of the invention.

Fig. 2 is a sectional view taken along the line a-a in fig. 1.

Fig. 3 is a schematic diagram of the rotation of the fan-shaped dial in the anti-falling barometer of the invention.

Reference numerals

1 outer cover

2 air inlet joint

3 sealing film

4 piston rod

5 inner shell

6 spring

7 guide plate

71 piston guide groove

72 drive guide groove

8 sector dial

81 positioning rotating shaft

82 scale band

83 rotating deflector rod

9 cover plate

91 reading open hole

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.

Fig. 1 is a schematic view of an anti-falling barometer of the invention. Fig. 2 is a sectional view taken along the line a-a in fig. 1. Fig. 3 is a schematic diagram of the rotation of the fan-shaped dial in the anti-falling barometer of the invention. As shown in fig. 1 to 3, an anti-falling barometer of the present invention includes: the air intake device comprises an outer shell 1, an air intake joint 2, a sealing membrane 3, a piston rod 4, an inner shell 5, a spring 6, a guide plate 7, a sector dial 8 and a cover plate 9. In the present embodiment, the outer housing 1, the intake connector 2, the piston rod 4, the inner housing 5, the guide plate 7, the sector scale 8, and the cover plate 9 are all made of plastic, but not limited thereto. The housing 1 is provided with an inlet connection 2. The piston assembly is arranged in the shell 1, and the first end of the piston assembly is elastically sealed with the air inlet joint 2 under the bias force. The arc side of the sector dial 8 is provided with a scale belt 82, and the side surface of the sector dial 8 is provided with a positioning rotating shaft 81 and a rotating shift lever 83. The cover plate 9 includes a reading opening 91, the cover plate 9 covers the fan-shaped scale 8, and at least one scale reading is exposed from the reading opening 91. When the piston assembly is jacked up by external air flow overcoming the bias force, the second end of the piston assembly is jacked up and drives the rotary shift lever 83 to drive the sector dial 8 to rotate around the positioning rotating shaft 81, and scale reading exposed out of the reading opening 91 is replaced.

In a preferred embodiment, the scale band 82 is provided with a plurality of scale readings spaced along the arc, but not limited thereto.

In a preferred embodiment, the plane of rotation of the sector scale 8 is parallel to the direction of the biasing force, but not limited thereto.

In a preferred embodiment, the two positioning shafts 81 are respectively connected to two sides of the circle center position of the sector scale 8, but not limited thereto.

In a preferred embodiment, the rotation lever 83 is parallel to the positioning rotation shaft 81, but not limited thereto.

In a preferred embodiment, the piston assembly comprises:

a piston 4, the piston 4 comprising a piston portion and a piston rod, the piston portion being urged against the inlet fitting 2 by a spring 6.

A guide plate 7 connected to the piston rod 4, the guide plate 7 having a transmission guide groove 72, the rotary shift lever 83 being limited to the transmission guide groove 72, the transmission guide groove 72 transmitting the rotary shift lever 83 to rotate the sector scale 8 when the guide plate 7 is pushed up by the outside air flow.

In a preferred embodiment, the guide plate 7 is provided with a piston guide groove 71, the piston guide groove 71 extends along the length direction of the piston rod 4, and the positioning rotation shaft 81 is limited to the piston guide groove 71, but not limited thereto.

In a preferred embodiment, the extending direction of the piston guide groove 71 and the extending direction of the transmission guide groove 72 are perpendicular to each other, but not limited thereto.

In a preferred embodiment, the first side of the sealing membrane 3 abuts against the through hole of the air inlet connector 2, but is not limited thereto.

In a preferred embodiment, the inner housing 5 is sleeved inside the outer housing 1, the piston assembly is disposed in the inner housing 5, and two ends of the spring 6 respectively abut against a second side of the sealing membrane 3 and a side of the inner housing 5 facing away from the air inlet joint 2, but not limited thereto.

The implementation process of the invention is as follows:

referring to fig. 3, the scale band 82 of the sector scale 8 is marked with readings representing 0bar, 5bar, 10bar, 15bar, 20bar, 25bar and 30bar in sequence from one end to the other, and in a state without external air flow, the reading representing 0bar is exposed to the reading opening 91 of the cover plate 9, but not limited thereto. When the external air flow with enough air pressure overcomes the biasing force provided by the spring 6 and jacks up the piston 4 pressed and connected with the sealing film 3, the piston rod rises along the piston guide groove 71, the distance between the transmission guide groove 72 and the air inlet connector 2 is changed, the rotating shift lever 83 arranged in the transmission guide groove 72 is driven to rotate around the positioning rotating shaft 81, and the reading of the rotating sector dial 8 exposed out of the reading opening 91 of the cover plate 9 is changed into 5bar. As the air pressure of the external air flow increases, the sector scale 8 can be rotated by a larger angle, so that the reading of the reading hole 91 exposed to the cover plate 9 is further increased to 10bar, 15bar.

The anti-falling pressure gauge is of a plastic structure, mainly comprises plastic and a spring, is different from the traditional pressure gauge, and is provided with structures which are not beneficial to shock resistance, such as a gear transmission structure, a copper spring tube and the like. Due to the adoption of the spring type and the simpler rotating mechanism, the invention has good anti-falling capability and cannot be invalid or inaccurate due to vibration. The spring and the digital disc are only needed to be replaced when the meter with different measuring ranges is replaced.

The anti-falling barometer is made of plastic materials, so that the cost is greatly reduced, the structure is simple, the assembly is easy, and the anti-falling capability is strong. The dial plate is not pointer type, is similar to digital display, and is more intuitive for a client to check pressure. Compare in traditional manometer dial plate spare area big, easily carry out the dial plate design.

In conclusion, the anti-falling air pressure gauge can avoid using non-shock-resistant mechanisms such as gear transmission and spring tubes, adopts the deflector rod turntable structure, has good anti-falling capability, cannot be invalid or inaccurate due to vibration, and greatly prolongs the service life of the product and the accuracy after long-term use.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims

1. An anti-fall barometer, comprising:

the air conditioner comprises a shell (1), wherein the shell (1) is provided with an air inlet joint (2);

a piston assembly arranged in the shell (1), wherein a first end of the piston assembly is elastically sealed with the air inlet joint (2) under the bias force;

the fan-shaped dial (8) is characterized in that a scale band (82) is arranged on the arc side of the fan-shaped dial (8), and a positioning rotating shaft (81) and a rotating shifting rod (83) are arranged on the side surface of the fan-shaped dial (8); and

a cover plate (9) comprising a reading opening (91), wherein the cover plate (9) covers the fan-shaped dial (8), and the reading opening (91) at least exposes a scale reading;

when the external air flow overcomes the bias force to jack the piston assembly, the second end of the piston assembly is jacked and drives the rotary shift lever (83) to drive the sector dial (8) to rotate around the positioning rotating shaft (81), and the scale reading exposed out of the reading opening (91) is replaced.

2. The drop-resistant barometer of claim 1, wherein the scale band (82) is provided with a plurality of scale readings spaced along an arc.

3. Anti-falling barometer according to claim 1, wherein the plane of rotation of the sector dial (8) is parallel to the direction of the biasing force.

4. The anti-falling barometer of claim 1, wherein two of the positioning shafts (81) are connected to the two sides of the circle center position of the sector scale (8).

5. Anti-falling barometer according to claim 1, wherein said rotary dial (83) is parallel to said positioning rotation axis (81).

6. The drop resistant barometer of claim 1, wherein the piston assembly comprises:

a piston (4), said piston (4) comprising a piston portion and a piston rod, said piston portion being abutted against the inlet fitting (2) by a spring (6);

a guide board (7), connect in piston rod (4), guide board (7) are equipped with a transmission guide way (72), rotatory driving lever (83) by spacing in transmission guide way (72), along with guide board (7) by when outside air current jack-up, transmission guide way (72) transmission rotatory driving lever (83) rotates fan-shaped calibrated scale (8).

7. The drop-resistant barometer of claim 6, wherein the guide plate (7) is provided with a piston guide groove (71), the piston guide groove (71) extends along the length of the piston rod (4), and the positioning shaft (81) is limited in the piston guide groove (71).

8. The drop-resistant barometer of claim 7, wherein the piston guide slot (71) extends in a direction perpendicular to the drive guide slot (72).

9. The drop resistant barometer of claim 6, further comprising: and the first side of the sealing film (3) is abutted and sealed with the through hole of the air inlet joint (2).

10. The drop resistant barometer of claim 9, further comprising: an inner shell (5); the inner sleeve is arranged inside the outer shell (1), the piston assembly is arranged in the inner shell (5), and two ends of the spring (6) are respectively abutted to the second side of the sealing membrane (3) and one side of the inner shell (5) deviating from the air inlet joint (2).