Pressure gauge contact device
By replacing gem bearings with ball bearings, the vibration-alignment problem caused by wear of the movable conductive needle is solved, improving the accuracy of pressure measurement and extending the service life of the instrument.
Patent Information
- Application Number
- CN202422031569.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-21
- Publication Date
- 2025-03-21
- Estimated Expiration
- 2034-08-21
AI Technical Summary
The existing movable conductive needles are rotatably connected by gem bearings. They are easily worn after multiple rotations, resulting in vibration-related phenomena, affecting the accuracy of pressure measurement.
Ball bearings are used instead of gem bearings, and the fixing plate and the rotating plate are rotatably connected through the ball bearing body to reduce friction and avoid wear.
It effectively avoids wear, increases the service life of the instrument, and makes the rotation of the movable conductive needle smoother, improving the accuracy of pressure measurement.
Smart Images
Figure CN222652442U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of pressure gauge contacts, and in particular relates to a pressure gauge contact device. Background Art
[0002] Two transmission needles are led out from the pressure gauge pointer, and the two transmission needles are respectively mounted with the lower limit moving contact and the upper limit moving contact of the electric contact device; the transmission needle connected to the lower limit moving contact has a counterclockwise self-resetting spring, which is used for self-resetting the lower limit contact when the pressure is released; the transmission needle connected to the upper limit moving contact has a clockwise automatic reset spring, which is used for automatically resetting the upper limit contact when the pressure is loaded. When the measured pressure acts on, the pressure gauge pointer drives the (active) moving contact of the lower limit (or upper limit) of the electric contact device to separate (or approach), and when it contacts the upper limit (or lower limit) of the contact on the set pointer, the electric energy is connected (or disconnected) to achieve the purpose of automatic control of pressure detection.
[0003] Most of the existing movable conductive needles use jewel bearings for rotational connection. After multiple rotations, the jewel bearings are easily worn, causing the movable conductive needle to easily vibrate when rotating, resulting in inaccurate pressure measurement and certain limitations. Utility Model Content
[0004] The purpose of the utility model is to provide a pressure gauge contact device to solve the problem proposed in the above background technology that most of the existing movable conductive needles adopt jewel bearings for rotational connection, and after multiple rotations, the jewel bearings are easily worn, resulting in vibration when the movable conductive needle rotates, resulting in inaccurate pressure measurement and certain limitations.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a pressure gauge contact device, comprising a fixed base, the internal thread of the fixed base is fixedly connected to a fixed plate, one side of the fixed plate is fixedly provided with a second threaded fixing hole, the lower end of the fixed plate is rotatably connected to a rotating plate through a ball bearing body, one side of the rotating plate is fixedly connected to a connecting rod, one end of the connecting rod is fixedly connected to a fixing ring, and the outer side of the rotating plate is fixedly connected to a hairspring body.
[0006] Preferably, first threaded fixing holes are fixedly opened on both sides of the lower end of the fixed base, and a wire pressing screw is threadedly fixedly connected to the lower end of the fixed base, and the wire pressing screw is located below the first threaded fixing hole.
[0007] Preferably, a lower limit movable pin is rotatably provided on one side of the upper end of the fixed base, one end of the lower limit movable pin is fixedly connected to a lower limit conductive pin, and one end of the lower limit conductive pin is fixedly connected to a lower limit setting pin.
[0008] Preferably, an upper limit movable pin is rotatably provided on the other side of the upper end of the fixed base, one end of the upper limit movable pin is fixedly connected to an upper limit conductive pin, and one end of the upper limit conductive pin is fixedly connected to an upper limit setting pin.
[0009] Compared with the prior art, the beneficial effects of the utility model are:
[0010] 1. The utility model can reduce friction and make the movable conductive needle rotate more smoothly by setting the jewel bearing connection as a ball bearing rotation, and at the same time effectively avoid the inaccuracy of the instrument caused by wear and tear, thereby increasing the service life of the instrument. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the structure of the utility model;
[0012] Figure 2 It is a structural schematic diagram of the fixing plate of the utility model;
[0013] Figure 3 It is a structural schematic diagram of the rotating piece of the utility model.
[0014] In the figure: 1. fixed base; 2. lower limit conductive needle; 3. lower limit setting needle; 4. lower limit movable needle; 5. upper limit movable needle; 6. upper limit setting needle; 7. upper limit conductive needle; 8. wire pressing screw; 9. first threaded fixing hole; 10. fixing plate; 11. ball bearing body; 12. rotating plate; 13. connecting rod; 14. fixing ring; 15. hairspring body; 16. second threaded fixing hole. DETAILED DESCRIPTION
[0015] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0016] See also Figure 1-3 The utility model provides a technical solution: a pressure gauge contact device, including a fixed base 1, the internal thread of the fixed base 1 is fixedly connected with a fixed plate 10, one side of the fixed plate 10 is fixedly opened with a second threaded fixing hole 16, the lower end of the fixed plate 10 is rotatably connected with a rotating plate 12 through a ball bearing body 11, one side of the rotating plate 12 is fixedly connected with a connecting rod 13, one end of the connecting rod 13 is fixedly connected with a fixing ring 14, and the outer side of the rotating plate 12 is fixedly connected with a hairspring body 15.
[0017] In this embodiment, the fixed plate 10 is threadedly fixed inside the fixed base 1, and the fixed plate 10 and the rotating plate 12 are rotatably connected using the ball bearing body 11, and the hairspring body 15 is fixedly sleeved on the outside of the rotating plate 12. By setting the ball rotation method, wear caused by multiple rotations can be effectively avoided, thereby increasing the overall service life. This design method can reduce friction and make the movable conductive needle rotate more smoothly by setting the jewel bearing connection as ball bearing rotation, while effectively avoiding inaccuracy of the instrument due to wear and tear, thereby increasing the service life of the instrument.
[0018] Specifically, first threaded fixing holes 9 are fixedly opened on both sides of the lower end of the fixed base 1 , and a pressing screw 8 is threadedly fixedly connected to the lower end of the fixed base 1 , and the pressing screw 8 is located below the first threaded fixing hole 9 .
[0019] In this embodiment, the first threaded fixing hole 9 is provided to facilitate fixing of the overall fixing base 1, and the wire crimping screw 8 is provided to threadably crimp and fix the wire.
[0020] Specifically, a lower limit movable pin 4 is rotatably provided on one side of the upper end of the fixed base 1 , one end of the lower limit movable pin 4 is fixedly connected to the lower limit conductive pin 2 , and one end of the lower limit conductive pin 2 is fixedly connected to the lower limit setting pin 3 .
[0021] In this embodiment, the lower limit point of the lower limit setting needle 3 can be adjusted by setting the lower limit movable needle 4 .
[0022] Specifically, an upper limit movable pin 5 is rotatably provided on the other side of the upper end of the fixed base 1 , one end of the upper limit movable pin 5 is fixedly connected to an upper limit conductive pin 7 , and one end of the upper limit conductive pin 7 is fixedly connected to an upper limit setting pin 6 .
[0023] In this embodiment, the upper limit movable needle 5 is provided to adjust the upper limit point of the upper limit setting needle 6, so that the movable conductive needle can only rotate between the lower limit setting needle 3 and the upper limit setting needle 6, effectively performing a certain limit.
[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A pressure gauge contact device, comprising a fixed base (1), characterized in that: The fixed base (1) is internally threadedly fixedly connected to a fixing plate (10), one side of the fixing plate (10) is fixedly provided with a second threaded fixing hole (16), the lower end of the fixing plate (10) is rotatably connected to a rotating plate (12) via a ball bearing body (11), one side of the rotating plate (12) is fixedly connected to a connecting rod (13), one end of the connecting rod (13) is fixedly connected to a fixing ring (14), and the outer side of the rotating plate (12) is fixedly connected to a hairspring body (15).
2. A pressure gauge contact device according to claim 1, characterized in that: First threaded fixing holes (9) are fixedly opened on both sides of the lower end of the fixed base (1), and a wire pressing screw (8) is threadedly fixedly connected to the lower end of the fixed base (1), and the wire pressing screw (8) is located below the first threaded fixing hole (9).
3. A pressure gauge contact device according to claim 1, characterized in that: A lower limit movable pin (4) is rotatably provided on one side of the upper end of the fixed base (1), one end of the lower limit movable pin (4) is fixedly connected to a lower limit conductive pin (2), and one end of the lower limit conductive pin (2) is fixedly connected to a lower limit setting pin (3).
4. A pressure gauge contact device according to claim 1, characterized in that: An upper limit movable pin (5) is rotatably provided on the other side of the upper end of the fixed base (1), one end of the upper limit movable pin (5) is fixedly connected to an upper limit conductive pin (7), and one end of the upper limit conductive pin (7) is fixedly connected to an upper limit setting pin (6).