CN217483733U - Core of precision pressure gauge and precision pressure gauge - Google Patents
Core of precision pressure gauge and precision pressure gauge Download PDFInfo
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- CN217483733U CN217483733U CN202221078266.4U CN202221078266U CN217483733U CN 217483733 U CN217483733 U CN 217483733U CN 202221078266 U CN202221078266 U CN 202221078266U CN 217483733 U CN217483733 U CN 217483733U
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- pressure gauge
- clamping plate
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- precision pressure
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Abstract
The utility model provides a pair of precision pressure gauge core, include: the upper clamping plate and the lower clamping plate are oppositely arranged, the core connecting column, the core shaft and the fan-shaped gear shaft which are connected with the upper clamping plate and the lower clamping plate are connected, the hairspring sleeved on the core shaft is sleeved, and the fan-shaped gear sleeved on the fan-shaped gear shaft is sleeved. The fan teeth are meshed with the mandrel, fan tooth bearings are arranged at the joints of the upper clamping plate and the lower clamping plate with the fan tooth shaft respectively, and mandrel bearings are arranged at the joints of the upper clamping plate and the lower clamping plate with the mandrel respectively. The spindle and the sector gear shaft are respectively used as supports through the spindle bearing and the sector gear bearing and are connected with the upper clamping plate and the lower clamping plate, friction generated when the instrument pointer rotates can be reduced, and therefore the coming and returning difference and the tapping displacement of the instrument are reduced, and therefore the bearing has important significance for improving the indicating precision, the sensitivity and the reliability of the instrument. The utility model also provides a precision pressure gauge with precision pressure gauge core.
Description
Technical Field
The utility model belongs to the technical field of the manometer core, in particular to precision pressure gauge core and precision pressure gauge.
Background
The existing instrument core comprises an upper clamp plate, a lower clamp plate, a core connecting column, sector teeth, a mandrel, a hairspring, a safety stop pin and other parts, wherein the upper clamp plate and the lower clamp plate are connected and fastened through the core connecting column. When the instrument is under medium pressure, the free end of the elastic element generates linear displacement to drive the sector gear, the mandrel and other parts on the machine core to rotate, and the micro displacement is amplified because the machine core has an amplifying function. When the sector gear and the mandrel rotate, the hairspring is tensioned to tightly engage the sector gear and the mandrel gear, so that the pointer obtains a larger rotation angle proportional to the measured pressure, the pressure gauge reaches an easily observed indication value, and sufficient reading precision is ensured.
However, in the existing movement, a core shaft and a fan-tooth shaft are directly fixed in mounting holes of an upper clamping plate and a lower clamping plate, so that the back-and-forth difference and the tapping displacement are large easily in the using process of the instrument due to the existence of frictional resistance, and the indicating precision and the reliability of the instrument are adversely affected.
Therefore, how to improve the indication accuracy and reliability of the meter is a problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a precision pressure gauge core and precision pressure gauge can effectively improve the instruction precision and the reliability of instrument.
In order to solve the technical problem, the utility model provides an accurate pressure gauge core, include:
the upper clamping plate and the lower clamping plate are oppositely arranged;
the core connecting column, the core shaft and the fan-tooth shaft are connected with the upper clamping plate and the lower clamping plate;
the balance spring is sleeved on the mandrel;
the fan teeth are sleeved on the fan tooth shaft;
the fan-shaped teeth are meshed with the mandrel, fan-shaped tooth bearings are arranged at the joints of the upper clamping plate and the lower clamping plate with the fan-shaped tooth shaft respectively, and the mandrel bearings are arranged at the joints of the upper clamping plate and the lower clamping plate with the mandrel respectively.
Optionally, in the core of the precision pressure gauge, the balance spring is in interference fit with the core shaft through a balance spring fixing sleeve.
Optionally, in the above precision pressure gauge movement, at least one of the upper plate and the lower plate is provided with a sector gear stop pin for limiting a swing angle of the sector gear.
The utility model also provides a precision pressure gauge, including the manometer casing and as above precision pressure gauge core, precision pressure gauge core set up in the manometer casing.
Optionally, in the above precision pressure gauge, the precision pressure gauge further includes a quick coupling for connecting a measured object, and the quick coupling is connected to the pressure gauge housing.
Optionally, in the above precision pressure gauge, the precision pressure gauge further includes a digital panel disposed outside the pressure gauge housing, and the digital panel is configured to display a pressure value.
The utility model provides an accurate pressure gauge core, its beneficial effect lies in:
the spindle and the fan-tooth shaft are respectively used as supports through the spindle bearing and the fan-tooth bearing and are connected with the upper clamping plate and the lower clamping plate, so that friction of the instrument pointer during rotation can be reduced, and therefore the coming and returning difference and the tapping displacement of the instrument are reduced.
The utility model also provides a precision pressure gauge with above-mentioned precision pressure gauge core, consequently, it has above-mentioned beneficial effect equally, and here is no longer repeated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a front view of a movement of a precision pressure gauge provided by an embodiment of the present invention;
fig. 2 is a left side view of a movement of a precision pressure gauge provided by an embodiment of the present invention;
fig. 3 is a rear view of a movement of a precision pressure gauge provided in an embodiment of the present invention;
fig. 4 is a top view of a movement of a precision pressure gauge provided by an embodiment of the present invention.
In the upper drawing:
1-upper splint; 2-lower splint; 3, a sector gear stop pin; 4-connecting a core column; 5-a balance spring; 6-mandrel; 7-a mandrel bearing; 8-sector gear; 9-sector gear shaft; 10-scalloped bearings; 11-hairspring fixation sleeves; 12-connector mounting hole.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like 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 accompanying drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality is more than two, and if there is a description that the first and the second are only used for distinguishing technical features, it is not understood that the relative importance is indicated or implied or the number of the indicated technical features is implicitly indicated or the precedence of the indicated technical features is implicitly indicated.
In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.
The core of the utility model is to provide an accurate pressure gauge core and accurate pressure gauge can effectively improve the instruction precision and the reliability of instrument.
In order to make those skilled in the art better understand the technical solutions provided by the present invention, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.
The utility model provides a precision pressure gauge includes at least: the pressure gauge comprises a pressure gauge shell and a precision pressure gauge core, wherein the precision pressure gauge core is arranged in an inner cavity of the pressure gauge shell.
Certainly, other functional components can be added to the precision pressure gauge according to actual conditions, such as a digital panel arranged outside a pressure gauge shell and used for displaying pressure gauge data; the quick connector is used for connecting a measured object and is connected with the pressure gauge shell; any functional unit that can combine together with the precision pressure gauge is all in the utility model discloses contain the within range, no longer describe herein.
Wherein, it should be understood that the utility model discloses a core lies in above-mentioned precision pressure gauge core, consequently, the utility model discloses the follow-up main detail introduction that carries on to this precision pressure gauge core that mainly aims at of embodiment. For other structures in the precision pressure gauge movement provided by the embodiment, reference may be made to related prior art, and details are not described here.
Specifically, please refer to fig. 1-4, fig. 1 is a front view of a movement of a precision pressure gauge according to an embodiment of the present invention; fig. 2 is a left side view of a movement of a precision pressure gauge provided in an embodiment of the present invention; fig. 3 is a rear view of a movement of a precision pressure gauge provided in an embodiment of the present invention; fig. 4 is a top view of a movement of a precision pressure gauge provided by an embodiment of the present invention.
The core of the precision pressure gauge comprises: upper and lower splint 1, core connection post 4, dabber 6 and scallop gear axle 9, hairspring 5, and scallop gear 8.
Wherein, the upper splint 1 and the lower splint 2 are firmly connected through the movement connecting column 4. The sector gear 8 is connected with the upper clamping plate 1 and the lower clamping plate 2 through a sector gear shaft 9, and the hairspring 5 is connected with the upper clamping plate 1 and the lower clamping plate 2 through the core shaft 6 and the movement connecting column 4. The balance spring 5 has the function that when the spindle 6 is driven by the sector teeth 8 to rotate, the reverse torque can be generated, so that the sector teeth 8 and the spindle 6 are tightly meshed. During installation, hairspring 5 can provide certain pretightening force for hairspring, and the pretightening force is transmitted to mandrel 6 through hairspring 5, so that mandrel 6 can keep stable during movement.
The upper clamping plate 1 is provided with a mandrel bearing hole and a sector gear bearing hole, and a mandrel bearing 7 and a sector gear bearing 10 are respectively assembled on the mandrel bearing hole and the sector gear bearing hole. Similarly, the lower plate 2 is also provided with a spindle bearing hole and a sector bearing hole, on which a spindle bearing 7 and a sector bearing 10 are fitted, respectively.
The utility model provides a pair of precision pressure gauge core is connected dabber 6 and fan-tooth axle 9 with upper plate 1, lower plate 2 through dabber bearing 7 and fan-tooth bearing 10 as supporting respectively, friction when reducible instrument pointer rotates to reduce coming the return difference of instrument and tapping the displacement, therefore, above-mentioned bearing has the significance to the instruction precision, sensitivity, the reliability that have improved the instrument.
In the particular embodiment, balance spring 5 is interference fitted with spindle 6 by means of a balance spring fixing sleeve 11, balance spring fixing sleeve 11 enabling balance spring 5 to be stably connected with spindle 6.
At least one of the upper clamp plate 1 and the lower clamp plate 2 is provided with a sector gear stop pin 3 for limiting the swing angle of the sector gear 8, so that the sector gear 8 is limited after moving for a certain position, and the sector gear 8 and the mandrel 6 are prevented from disengaging during rotation.
Preferably, the area of punch holder 1 is greater than the area of lower frame plate, can save the volume that occupies of splint, simultaneously, for the ease of installing punch holder 1 and lower plate 2 on the manometer casing, can set up joint mounting hole 12 on punch holder 1, accessible bolted connection is on the pressure connects the body. The upper splint 1 and the lower splint 2 can be designed into any shape according to actual needs, and further description is omitted.
Compared with the prior art, the utility model discloses at punch holder 1, lower plate 2 install dabber bearing 7 and fan tooth bearing 10, make dabber 6 and fan tooth axle 9 connect on punch holder 1 and lower plate 2 through the bearing respectively to frictional resistance has been reduced.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (6)
1. A precision pressure gauge movement, comprising:
the upper clamping plate and the lower clamping plate are oppositely arranged;
the core connecting column, the core shaft and the fan-tooth shaft are connected with the upper clamping plate and the lower clamping plate;
the balance spring is sleeved on the mandrel;
the fan teeth are sleeved on the fan tooth shaft;
the fan-shaped teeth are meshed with the mandrel, fan-shaped tooth bearings are arranged at the joints of the upper clamping plate and the lower clamping plate with the fan-shaped tooth shaft respectively, and mandrel bearings are arranged at the joints of the upper clamping plate and the lower clamping plate with the mandrel respectively.
2. A precision pressure gauge movement according to claim 1, wherein the balance spring is interference fitted to the spindle by a balance spring fixing bush.
3. A precision pressure gauge movement according to claim 1, wherein at least one of the upper plate and the lower plate is provided with a sector gear stop pin for limiting the sector gear swing angle.
4. A precision pressure gauge, comprising a pressure gauge housing and a precision pressure gauge movement according to any one of claims 1 to 3, said precision pressure gauge movement being disposed within said pressure gauge housing.
5. The precision pressure gauge according to claim 4, further comprising a quick connector for connecting to a measured object, the quick connector being connected to the pressure gauge housing.
6. The precision pressure gauge according to claim 4, further comprising a digital panel disposed outside the pressure gauge housing for displaying a pressure value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221078266.4U CN217483733U (en) | 2022-05-05 | 2022-05-05 | Core of precision pressure gauge and precision pressure gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221078266.4U CN217483733U (en) | 2022-05-05 | 2022-05-05 | Core of precision pressure gauge and precision pressure gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217483733U true CN217483733U (en) | 2022-09-23 |
Family
ID=83309713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221078266.4U Active CN217483733U (en) | 2022-05-05 | 2022-05-05 | Core of precision pressure gauge and precision pressure gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217483733U (en) |
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2022
- 2022-05-05 CN CN202221078266.4U patent/CN217483733U/en active Active
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