CN217980636U

CN217980636U - Anti-falling barometer

Info

Publication number: CN217980636U
Application number: CN202222384635.9U
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: 2022-09-08
Filing date: 2022-09-08
Publication date: 2022-12-06
Anticipated expiration: 2032-09-08

Abstract

The utility model provides an anti barometer that falls, include: a housing provided with an air inlet joint; the pressure measuring machine core is internally provided with an air cylinder and a cylinder rod which are communicated with the air inlet connector, the air cylinder is elastically extruded by a biasing force, and the direction of the biasing force is vertical to the air inlet direction of the air inlet connector; a transmission rotating shaft which rotates by matching with the motion stroke of the cylinder rod; and the pointer is connected with the transmission rotating shaft, and when the external air flow overcomes the bias force applied to the air cylinder to push out the cylinder rod, the transmission rotating shaft transmits the pointer to rotate based on the dial plate with the dial plate. The utility model discloses not only have good anti ability of falling, data reading is convenience directly perceived moreover, can not be invalid or inaccurate because of the vibration, has prolonged the life of product greatly and the accuracy after using for a long time.

Description

Anti-falling barometer

Technical Field

The utility model relates to a gaseous atmospheric pressure detection field, specifically speaking relates to an anti barometer that falls.

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 rotates to display the pressure. Spring tubes are divided into types of shaped tubes, coil spring tubes, spiral tubes and the like, and generally adopt cold-work hardening type blank tubes which have high plasticity in an annealing state and obtain 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 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 circular diaphragm with waves, one side of the diaphragm is subjected to the pressure of 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.

Therefore, the utility model provides an anti barometer that falls.

SUMMERY OF THE UTILITY MODEL

To the problem among the prior art, the utility model aims to provide an anti barometer that falls has overcome prior art's difficulty, not only has good anti ability of falling, and data reading is directly perceived convenient moreover, can not be invalid or inaccurate because of the vibration, has prolonged the life of product and the accuracy after using for a long time greatly.

An embodiment of the utility model provides an anti barometer that falls, include:

the shell is provided with an air inlet joint;

the pressure measuring machine core is internally provided with an air cylinder and a cylinder rod which are communicated with the air inlet connector, the air cylinder is elastically extruded by a biasing force, and the direction of the biasing force is perpendicular to the air inlet direction of the air inlet connector;

a transmission rotating shaft which rotates in accordance with the movement stroke of the cylinder rod; and

and the pointer is connected with the transmission rotating shaft, and when the external air flow overcomes the bias force applied to the air cylinder to eject out the cylinder rod, the pointer is transmitted by the transmission rotating shaft to rotate based on the dial plate with the dial plate.

Preferably, the load cell core comprises:

the first end of the machine core main body is provided with an air inlet communicated with the air inlet joint;

the sealing gasket is arranged in the movement main body, and a first side of the sealing gasket and a first end of the movement main body are encircled to form an air cylinder;

a push rod arranged in the machine core main body, wherein the first end of the push rod is abutted against the second side of the sealing gasket,

the movement cover is butted with the movement main body and is provided with an opening for the second end of the push rod to pass through; and

and the spring is sleeved on the push rod in a sleeving manner, is supported between the push rod and the machine core cover and provides a biasing force for compressing the air cylinder for the sealing gasket.

Preferably, the transmission shaft includes:

a shaft body;

the outer spline joint is arranged at the end part of the rotating shaft body and is embedded with the inner spline at one end of the pointer; and

and the first end of the rotating deflector rod is connected to the rotating shaft body through a connecting rod, and the second end of the rotating deflector rod is inserted into the transmission guide groove of the second end of the push rod and is driven by the push rod to drive the rotating shaft body to rotate so as to drive the pointer to rotate based on the rotating deflector rod.

Preferably, the supporting direction of the spring and the stroke direction of the push rod are both perpendicular to the air intake direction.

Preferably, the extending direction of the transmission rotating shaft is parallel to the air inlet direction.

Preferably, the shell is of a cylindrical structure and is sleeved with the pressure measuring machine core, an air inlet hole is formed in one side, forming the air cylinder, of the pressure measuring machine core, and an air inlet channel communicated with the air inlet connector and the air inlet hole is formed in the shell.

Preferably, an accommodating space for connecting the push rod with the transmission rotating shaft is formed in one side of the shell, which is far away from the load cell core.

Preferably, the dial plate covers the upper part of the pressure measuring machine core, and the dial plate is provided with a through hole for the rotating shaft body to pass through.

Preferably, the watch further comprises an upper cover which covers the dial and the pointer and is connected with the shell in a sealing mode.

Preferably, the extension direction of the transmission rotating shaft is perpendicular to the rotation plane of the pointer.

The utility model discloses an anti barometer that falls can avoid using not antidetonation mechanisms such as gear drive and spring pipe, and data reading is convenience directly perceived, has good anti ability of falling, can not be invalid or inaccurate because of the vibration, has prolonged the life of product and the accuracy after long-term the use greatly.

Drawings

Other features, objects and advantages of the invention will become more apparent from a 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 present invention.

Fig. 2 isbase:Sub>A sectional view taken along the linebase:Sub>A-base:Sub>A in fig. 1.

Fig. 3 is an exploded view of the anti-falling barometer of the present invention.

Fig. 4 is a schematic view of the transmission principle of the anti-falling barometer of the present invention.

Reference numerals

1. Upper cover

2. Outer casing

3. Pointer with a movable finger

4. Transmission rotating shaft

41. Rotary deflector rod

42. External spline joint

43. Rotating shaft body

5. Dial plate

6. Machine core main body

7. Sealing film

8. Push rod

81. Transmission guide groove

9. Spring

10. Movement cover

11. Air inlet joint

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 present invention. Fig. 2 isbase:Sub>A sectional view taken along the linebase:Sub>A-base:Sub>A in fig. 1. Fig. 3 is an exploded view of the anti-falling barometer of the present invention. Fig. 4 is a schematic view of the transmission principle of the anti-falling barometer of the present invention. As shown in fig. 1 to 4, the utility model discloses an anti barometer that falls, include: a shell 2, a pressure measuring machine core, a transmission rotating shaft 4 and a pointer 3. The housing 2 is provided with an inlet connection 11. The pressure measuring machine core is internally provided with an air cylinder and a cylinder rod which are communicated with the air inlet joint 11, the air cylinder is elastically extruded by a biasing force, and the direction X of the biasing force is vertical to the air inlet direction Y of the air inlet joint 11. The transmission rotating shaft 4 rotates in accordance with the stroke of the cylinder rod. The pointer 3 is connected to a transmission rotary shaft 4, and when the external air flow pushes out the cylinder rod against the biasing force received by the air cylinder, the pointer 3 is driven to rotate based on a dial 5 having a dial by the transmission rotary shaft 4.

In a preferred embodiment, the load cell core comprises:

a movement main part 6, the first end of movement main part 6 is equipped with the inlet port of UNICOM air inlet connector 11.

And the sealing gasket 7 is arranged in the machine core main body 6, and the first side of the sealing gasket 7 and the first end of the machine core main body 6 surround to form an air cylinder.

And the push rod 8 is arranged in the machine core main body 6, and the first end of the push rod 8 is abutted against the second side of the sealing gasket 7.

And a movement cover 10 which is butted with the movement main body 6, wherein the movement cover 10 is provided with an opening for the second end of the push rod 8 to pass through. And

and a spring 9 which is sleeved on the push rod 8 and supported between the push rod 8 and the movement cover 10 and provides a biasing force for compressing the air cylinder for the sealing gasket 7.

In a preferred embodiment, the transmission shaft 4 comprises:

a shaft body 43.

An external spline joint 42 is provided at the end of the shaft body 43 and is fitted with the internal spline of one end of the pointer 3. And

and a rotating shift lever 41, a first end of the rotating shift lever 41 is connected to the rotating shaft body 43 through a connecting rod, a second end of the rotating shift lever 41 is inserted into the transmission guide slot 81 of the second end of the push rod 8, and the rotating shaft body 43 is driven to rotate by the transmission of the push rod 8, so as to drive the pointer 3 to rotate based on the rotating shift lever 41.

In a preferred embodiment, the direction of support of the spring and the direction of travel of the push rod 8 are both perpendicular to the direction of intake.

In a preferred embodiment, the direction of extension of the drive shaft 4 is parallel to the direction of air intake.

In a preferred embodiment, the housing 2 is a cylindrical structure, and is sleeved with a pressure measuring core, an air inlet hole is formed in one side of the pressure measuring core, which forms the air cylinder, and an air inlet channel communicated with the air inlet joint 11 and the air inlet hole is formed in the housing 2.

In a preferred embodiment, the housing 2 has an accommodating space formed in its side facing away from the load cell core, which accommodating space provides a connection of the push rod 8 to the transmission shaft 4.

In a preferred embodiment, the dial 5 covers the top of the pressure measuring movement, and the dial 5 is provided with a through hole through which the rotating shaft body 43 passes.

In a preferred embodiment, it also comprises a cover 1, covering the dial 5 and the hands 3, and hermetically connected to the casing 2.

In a preferred embodiment, the direction of extension of the transmission shaft 4 is perpendicular to the plane of rotation of the hands 3.

The utility model discloses an implementation as follows:

referring to fig. 2, 3 and 4, when an external air flow with sufficient air pressure enters the housing 2 from the air inlet joint 11 along the path L and enters the air cylinder through the air inlet hole at the first end of the movement main body 6, the second end of the push rod 8 is pushed by the sealing gasket 7 to pass through the opening of the movement cover 10 and continue to move outwards against the biasing force provided by the spring 6, and in the process, the transmission guide groove 81 at the second end of the push rod 8 drives the rotating shaft body 43 to rotate, and the pointer 3 is driven to rotate based on the rotating shift lever 41, so that the dial 5 with the dial is matched to obtain an air pressure reading. Along with the further increase of the air pressure of the external air flow, the distance that the second end of the push rod 8 extends out of the opening is increased, and the rotating shaft body 43 is driven to rotate by a larger angle, so that a larger reading is obtained.

The utility model discloses an anti barometer that falls is a plastic construction's anti manometer that falls, and the primary structure is plastics and spring component, is different from traditional manometer, has got rid of gear drive to and copper product's spring pipe etc. are unfavorable for shock-resistant structure. (drop test jumps the tooth easily, and the spring tube of copper product is yielding easily) because the utility model discloses a spring to and comparatively simple slewing mechanism, make the utility model discloses data reading convenience directly perceived has good anti ability of falling, can not be invalid or inaccurate because of the vibration. The spring and the digital disc are only needed to be replaced when the meter with different measuring ranges is replaced.

To sum up, the utility model discloses an anti barometer that falls can avoid using not shock-resistant mechanisms such as gear drive and spring pipe, and data reading is convenience directly perceived, has good anti ability of falling, can not be invalid or inaccurate because of the vibration, has prolonged the life of product and the accuracy after long-term the use greatly.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. An anti-fall barometer, comprising:

a housing (2), said housing (2) being provided with an air inlet connection (11);

the pressure measuring machine core is internally provided with an air cylinder and an air cylinder rod which are communicated with the air inlet connector (11), the air cylinder is elastically extruded by a biasing force, and the direction of the biasing force is vertical to the air inlet direction of the air inlet connector (11);

a transmission rotating shaft (4) which rotates by matching with the motion stroke of the cylinder rod; and

a pointer (3), the pointer (3) is connected with the transmission rotating shaft (4), when the external air flow overcomes the bias force applied to the air cylinder to eject the cylinder rod, the pointer (3) is transmitted by the transmission rotating shaft (4) to rotate based on a dial plate (5) with a dial scale.

2. The drop-resistant barometer of claim 1, wherein the load cell core comprises:

the first end of the movement main body (6) is provided with an air inlet communicated with the air inlet joint (11);

the sealing gasket (7) is arranged in the movement main body (6), and a first side of the sealing gasket (7) and a first end of the movement main body (6) surround to form an air cylinder;

a push rod (8) arranged in the machine core main body (6), wherein the first end of the push rod (8) is abutted against the second side of the sealing gasket (7),

a movement cover (10) which is butted with the movement main body (6), wherein the movement cover (10) is provided with an opening for the second end of the push rod (8) to pass through; and

and the spring (9) is sleeved on the push rod (8) in a sleeving manner, is supported between the push rod (8) and the machine core cover (10), and provides a biasing force for compressing the air cylinder for the sealing gasket (7).

3. The anti-falling barometer of claim 2, wherein the transmission shaft (4) comprises:

a shaft body (43);

the external spline joint (42) is arranged at the end part of the rotating shaft body (43) and is embedded with the internal spline at one end of the pointer (3); and

the first end of the rotating shifting rod (41) is connected to the rotating shaft body (43) through a connecting rod, the second end of the rotating shifting rod (41) is inserted into the transmission guide groove (81) of the second end of the push rod (8), and the rotating shaft body (43) is driven to rotate under the transmission of the push rod (8) so as to drive the pointer (3) to rotate based on the rotating shifting rod (41).

4. Anti-falling barometer according to claim 3, wherein the direction of support of the spring and the direction of travel of the push rod (8) are perpendicular to the air intake direction.

5. 3-drop-resistant barometer according to claim 3, wherein the extension direction of the transmission rotation shaft (4) is parallel to the air intake direction.

6. The anti-falling barometer of claim 3, wherein the housing (2) is a cylindrical structure and is sleeved with the pressure cell core, an air inlet hole is formed in one side of the pressure cell core, which forms the air cylinder, and an air inlet channel communicated with the air inlet joint (11) and the air inlet hole is formed in the housing (2).

7. Anti-falling barometer according to claim 3, characterised in that a receiving space is formed in the housing (2) on the side facing away from the load cell core, which receiving space provides a connection of the push rod (8) to the transmission shaft (4).

8. The anti-falling barometer of claim 6, wherein the dial (5) covers the pressure cell core, and the dial (5) is provided with a through hole for the spindle body (43) to pass through.

9. The fall-resistant barometer of claim 7, further comprising an upper cover (1) covering the dial (5) and the hands (3) and sealingly connected to the casing (2).

10. Anti-falling barometer according to claim 9, wherein the extension direction of the transmission rotation shaft (4) is perpendicular to the rotation plane of the hands (3).