CN110411647B - Pressure gauge core and pressure gauge - Google Patents
Pressure gauge core and pressure gauge Download PDFInfo
- Publication number
- CN110411647B CN110411647B CN201910660916.2A CN201910660916A CN110411647B CN 110411647 B CN110411647 B CN 110411647B CN 201910660916 A CN201910660916 A CN 201910660916A CN 110411647 B CN110411647 B CN 110411647B
- Authority
- CN
- China
- Prior art keywords
- pressure gauge
- elastic tube
- pointer
- gear shaft
- concave holes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000007789 sealing Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001746 injection moulding Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
- G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L7/00—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements
- G01L7/02—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges
- G01L7/022—Measuring the steady or quasi-steady pressure of a fluid or a fluent solid material by mechanical or fluid pressure-sensitive elements in the form of elastically-deformable gauges constructional details, e.g. mounting of elastically-deformable gauges
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a pressure gauge movement and a pressure gauge, wherein the pressure gauge movement comprises a gear shaft, sector teeth and an elastic tube, wherein the gear set is fixedly connected with a pointer and drives the pointer to rotate, the sector teeth are meshed with the gear shaft and drive the gear shaft to rotate, and the sector teeth rotate around a fixed axle center; the elastic tube is penetrated and bent; the fan teeth are provided with concave holes, one end of the elastic tube is fixedly provided with an insert which can be inserted into the concave holes, and when the pointer in the dial plate vibrates and shakes to cause the trend of backward swinging, the elastic tube with elasticity enables the insert connected with the elastic tube to prop against the inner side surface of the concave holes on the fan teeth, the fan teeth are pulled to enable the fan teeth to be incapable of rotating, rotation of the gear shaft is restrained, and the pointer cannot swing backward.
Description
Technical Field
The invention relates to the field of test instruments, in particular to a pressure gauge movement and a pressure gauge.
Background
Currently, in the prior art, a pressure gauge comprises a case, in which a movement and a mounting joint are mounted, the movement being connected with a pointer, the case being externally connected with a cover, in which a surface plate is provided. The movement and the elastic tube are connected through the connecting rods, the connecting rods are hinged with each other, and in daily use, the pointer is easy to vibrate or swing back to a large extent due to vibration.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides the pressure gauge movement and the pressure gauge, which can reduce the pointer backswing amplitude.
The technical scheme adopted for solving the technical problems is as follows:
in a first aspect of the invention, there is provided a pressure gauge movement comprising:
gear shaft: fixedly connected with the pointer;
sector tooth: the sector gear is meshed with the gear shaft and rotates around a fixed axle center;
Elastic tube: the inside is communicated, and the elastic tube is in a bent shape;
The fan teeth are provided with concave holes, one end of the elastic tube is fixed with an insert which can be inserted into the concave holes, and the insert can pull the fan teeth to rotate.
The beneficial effects of the invention are as follows: when the pointer in the dial plate is vibrated to shake so as to cause the trend of backward swinging, the elastic pipe connected insert piece is propped against the inner side surface of the concave hole on the sector gear, the sector gear is pulled to enable the sector gear to be incapable of rotating, and the rotation of the gear shaft is restrained, so that the pointer cannot swing backward.
According to the pressure gauge movement of the first aspect of the invention, the concave holes are formed in a plurality of mode, and the linear distances between the concave holes and the axis of rotation of the sector gear are not equal. According to the elastic tubes of different materials, concave holes with different distances from the axle center are selected.
According to the pressure gauge movement of the first aspect of the present invention, the insert includes a bent pipe section and a hook portion, one end of the bent pipe section is fixed on the elastic pipe, the hook portion is disposed at the other end of the bent pipe section, and the hook portion is inserted into the concave hole. The hook part is hooked into the concave hole and is propped against the inner side surface of the concave hole, and the bending pipe section is tensioned by the elastic pipe, so that the whole movement is in a state of balanced stress.
According to the pressure gauge movement of the first aspect of the invention, the pressure gauge movement is further provided with a rotating shaft, and the sector gear is sleeved on the rotating shaft. The sector gear can rotate on the rotating shaft, so that the rotation axis of the sector gear is ensured to be unchanged.
According to a second aspect of the invention, a pressure gauge is provided, which comprises any one of the pressure gauge movement, a base, a dial plate and a gauge cover, wherein the base is provided with a mounting seat, the bottom of the base is provided with an exhaust hole, an air passage communicated with an air inlet hole is arranged in the mounting seat, and the elastic tube can be inserted into the mounting seat and is communicated with the air passage.
The beneficial effects of the invention are as follows: when the pointer in the dial plate is vibrated to shake so as to cause the trend of backward swinging, the elastic pipe connected insert piece is propped against the inner side surface of the concave hole on the sector gear, the sector gear is pulled to enable the sector gear to be incapable of rotating, and the rotation of the gear shaft is restrained, so that the pointer cannot swing backward.
According to the pressure gauge of the second aspect of the invention, the mounting seat is provided with the clamping groove, the clamping groove is clamped with the connector, and the connector is provided with the hole site capable of being embedded into the end part of the elastic tube. The elastic tube is directly inserted into the connector, and then the connector is clamped into the clamping groove to complete assembly, so that the previous welding procedure is omitted, the processing steps are saved, and the efficiency is improved.
According to the pressure gauge of the second aspect of the invention, the air passage is provided with a sealing ring close to the air outlet of the elastic tube. Preventing air leakage causes pointer shake or affects the accuracy of detection.
According to a pressure gauge of a second aspect of the invention, the mounting seat is provided with a processing hole, the processing hole is communicated with the air passage, and a plunger is inserted into the processing hole. And the plunger is used for plugging the processing hole, so that the influence on the accuracy of the test is avoided.
According to the pressure gauge of the second aspect of the invention, the mounting seat and the base are integrally formed. During processing, the mounting seat and the base are produced together in an injection molding mode, so that the workload of assembly is reduced, and the working efficiency is further improved.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic diagram of the pressure gauge of the present invention;
FIG. 2 is a schematic structural view of the pressure gauge movement of the present invention;
FIG. 3 is a schematic view of the structure between the elastic tube and the base of the present invention;
Fig. 4 is a schematic structural view of the base of the present invention.
Detailed Description
Reference will now be made in detail to the present embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the accompanying drawings are used to supplement the description of the written description so that one can intuitively and intuitively understand each technical feature and overall technical scheme of the present invention, but not to limit the scope of the present invention.
In the description of the present invention, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present invention can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.
Referring to fig. 1, the pressure gauge according to the embodiment of the invention includes a pressure gauge movement 30, a base 40, a dial 20 and a gauge cover 10, wherein the base 40 is provided with a mounting seat 41, the bottom of the base 40 is provided with an exhaust hole 42, an air passage 414 communicating with an air inlet hole is provided in the mounting seat 41, and the elastic tube 33 may be inserted into the mounting seat 41 and communicate with the air passage 414.
Referring to fig. 2, the pressure gauge movement 30 includes a gear shaft 32, a sector gear 31 and an elastic tube 33, the gear set is fixedly connected with the pointer 21 and drives the pointer 21 to rotate, the sector gear 31 is meshed with the gear shaft 32 and drives the gear shaft 32 to rotate, and it should be mentioned that the sector gear 31 rotates around a fixed axis; in this embodiment, the fan teeth 31 are sleeved on the rotating shaft. The sector gear 31 can rotate on the rotating shaft, so that the rotation axis of the sector gear 31 is unchanged. The elastic tube 33 is penetrated inside and is curved; the sector gear 31 is provided with a concave hole 311, one end of the elastic tube 33 is fixed with an insert 34 which can be inserted into the concave hole 311, when entering an environment with certain air pressure, air enters the elastic tube 33, so that the elastic tube 33 expands to drive the insert 34 to swing, thereby rotating the sector gear 31 and driving the gear shaft 32 to rotate.
When the pointer 21 in the dial 20 is vibrated to shake and thus swings back, the elastic tube 33 having elasticity (having a tendency to straighten) makes the insert 34 connected to the elastic tube 33 abut against the concave hole 311 on the sector gear 31 away from the inner side surface of the gear shaft 32, and pulls the sector gear 31 to prevent the sector gear 31 from swinging back, and restricts the rotation of the gear shaft 32 to prevent the pointer 21 from swinging back.
In some embodiments, referring to fig. 2, the concave holes 311 are provided in a plurality, and the linear distances between the concave holes 311 and the axis of rotation of the fan teeth 31 are not equal. Since different materials have different physical properties, the concave holes 311 having different distances from the axial center can be selected according to the elastic tubes 33 of different materials.
In some embodiments, the insert 34 includes a bent pipe section and a hook portion, one end of the bent pipe section is fixed on the elastic pipe 33, and the other end of the bent pipe section is provided with the hook portion, and the hook portion is inserted into the concave hole 311. The hook part is hooked into the concave hole 311 and is propped against the inner side surface of the concave hole 311 far away from the gear shaft 32, and the bending pipe section is tensioned by the elastic pipe 33, so that the whole movement is in a stress balance state.
In some embodiments, referring to fig. 3, for convenience of installation, the mounting seat 41 of the pressure gauge is provided with a clamping groove 413, a connector 321 is clamped in the clamping groove 413, and the connector 321 is provided with a hole site capable of being embedded in the end of the elastic tube 33. In actual assembly, after the elastic tube 33 is inserted into the connector 321, the connector 321 is directly clamped into the clamping groove 413 to complete assembly, so that the firmness between the elastic tube 33 and the mounting seat 41 is improved, and the elastic tube 33 is prevented from falling off.
Referring to fig. 3, when the air passage 414 is machined, a machined hole 411 is left in the mounting seat 41, and the machined hole 411 communicates with the air passage 414 to affect the accuracy of the test, so that the plunger 412 is inserted into the machined hole 411 to avoid affecting the accuracy of the test.
In the present embodiment, referring to fig. 4, the mount 41 is integrally formed with the base 40. The mounting seat 41 and the base 40 are produced together by injection molding and the like during processing, so that the workload of assembly is reduced, and the working efficiency is further improved.
While the above detailed construction and dimensional data have been provided for the purpose of illustrating the preferred embodiments of the present application, the present application is not limited to the embodiments, and various equivalent modifications and substitutions can be made by one skilled in the art without departing from the spirit of the present application, and are intended to be included in the scope of the present application as defined in the appended claims.
Claims (7)
1. A pressure gauge movement, comprising:
gear shaft: fixedly connected with the pointer;
sector tooth: the sector gear is meshed with the gear shaft and rotates around a fixed axle center;
Elastic tube: the inside is communicated, and the elastic tube is in a bent shape;
The fan teeth are provided with a plurality of concave holes, the straight line distances between the concave holes and the axes of rotation of the fan teeth are unequal, one end of the elastic tube is fixedly provided with an insert which can be inserted into the concave holes, the insert can pull the fan teeth to rotate, the insert comprises a bent tube section and a hook part, one end of the bent tube section is fixedly arranged on the elastic tube, the other end of the bent tube section is provided with the hook part, the hook part is inserted into the concave holes, the hook part is hooked into the concave holes and is propped against the inner side surface of the concave holes away from the gear shaft, and the bent tube section is tensioned by the elastic tube, so that the whole fan teeth are in a stress balance state; when the pointer has a trend of swinging backwards, the elastic pipe has a trend of straightening, so that the insert connected with the elastic pipe and the concave hole on the sector gear are propped against the inner side surface of the gear shaft, the sector gear is pulled to enable the sector gear to be incapable of swinging backwards, the rotation of the gear shaft is restrained, and the pointer is enabled to be incapable of swinging backwards.
2. A manometer movement according to claim 1, characterized in that it is further provided with a rotating shaft, on which the sector gear is sleeved.
3. The pressure gauge is characterized by comprising the pressure gauge core, a base, a dial plate and a gauge cover according to claim 1, wherein the base is provided with a mounting seat, the bottom of the base is provided with an exhaust hole, an air passage communicated with an air inlet hole is arranged in the mounting seat, and the elastic tube can be inserted into the mounting seat and communicated with the air passage.
4. A pressure gauge according to claim 3, wherein the mounting base is provided with a clamping groove, in which a joint is clamped, the joint being provided with a hole site into which the end of the elastic tube can be inserted.
5. A pressure gauge according to claim 3 or 4, wherein the air passage is provided with a sealing ring adjacent to the air outlet of the elastic tube.
6. A pressure gauge according to claim 3, wherein the mounting base is provided with a machined bore in communication with the air passage, the machined bore having a plunger inserted therein.
7. A pressure gauge according to claim 3, wherein the mounting base is integrally formed with the base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910660916.2A CN110411647B (en) | 2019-07-22 | 2019-07-22 | Pressure gauge core and pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910660916.2A CN110411647B (en) | 2019-07-22 | 2019-07-22 | Pressure gauge core and pressure gauge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110411647A CN110411647A (en) | 2019-11-05 |
| CN110411647B true CN110411647B (en) | 2024-06-28 |
Family
ID=68362235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910660916.2A Active CN110411647B (en) | 2019-07-22 | 2019-07-22 | Pressure gauge core and pressure gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110411647B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0745073U (en) * | 1992-09-17 | 1995-12-19 | 添 財 黄 | Pressure gauge |
| CN210141957U (en) * | 2019-07-22 | 2020-03-13 | 开平市京华仪表配件有限公司 | Pressure gauge core and pressure gauge |
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| CH161871A (en) * | 1931-08-19 | 1933-05-31 | Rosenthal & Schaede | Pointer manometer in which the pointer is driven by a rotatable gear segment. |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0745073U (en) * | 1992-09-17 | 1995-12-19 | 添 財 黄 | Pressure gauge |
| CN210141957U (en) * | 2019-07-22 | 2020-03-13 | 开平市京华仪表配件有限公司 | Pressure gauge core and pressure gauge |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110411647A (en) | 2019-11-05 |
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| PB01 | Publication | ||
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| TA01 | Transfer of patent application right |
Effective date of registration: 20201012 Address after: No.2, shengxia Road, Sanbu District, Jiangmen City, Guangdong Province Applicant after: Kaiping Jinhua Instrument Technology Co.,Ltd. Address before: 529000 building 3, No. 2, shengxia Road, Sanbu District, Kaiping, Jiangmen City, Guangdong Province Applicant before: KAIPING JINGHUA INSTRUMENT FITTINGS Co.,Ltd. |
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