High reliability butt-tightening quick connector for air conditioning pipelines

Abstract

The utility model belongs to the technical field of quick connectors, and in particular, relates to a high-reliability butt-tightening quick connector for air-conditioning pipelines, including a nut and a pipe joint, a limiting column is installed on the nut, an inner cavity is provided inside the nut, an outer cavity is provided at one end of the inner cavity, a hexagonal block is fixedly installed in the middle of the pipe joint, and an inner groove is provided at the end of the pipe joint. When using the utility model, the bottom plate is first moved to a position vertical to the groove, and then the nuts at both ends are tightened to the appropriate position of the pipe joint, and then the bottom plate is moved downward to appropriately adjust the position of the nut to align the limiting column with the notch, and the movable plate is pressed inward along the slide rail to deform and compress the spring, and when the notch is aligned with one side of the limiting column, it is loosened, and the elastic force of the spring is used to push the movable plate against the limiting column to achieve fixation, and the movable plate is used to clamp the limiting column to prevent the nut from loosening while vibrating, thereby avoiding the problem of leakage of the pipeline quick connector.

Description

Technical Field

[0001] The utility model belongs to the technical field of quick connectors and relates to a high-reliability butt-joint tightening quick connector for air-conditioning pipelines. Background Art

[0002] As one of the important components in the air conditioning system, the air conditioning pipe quick connector has the characteristics of easy connection, quick disassembly and high reliability. It can realize the quick connection between different components, such as the compressor connector, the pipe connection between the condenser and the evaporator, and the repair connector when temporarily repairing or replacing damaged pipes. These application scenarios all highlight the convenience and efficiency of the quick connector. The quick connector consists of nuts and pipe connectors as well as washers, gaskets, sealing rings, etc., which are responsible for bearing the pressure of the pipeline and ensuring the sealing.

[0003] When using the existing air conditioner pipe quick connector, the two ends of the pipe connector are inserted into the outer cavity of the nut, and the nut is rotated to engage with the pipe connector to achieve fixation. However, the air conditioner itself will vibrate during operation, and the nut will also vibrate, causing the nut to loosen while vibrating, resulting in the pipe quick connector itself losing its sealing properties and causing leakage. Utility Model Content

[0004] The utility model aims to solve the above problems and provides a high-reliability butt-jointed and tightened quick connector for air-conditioning pipelines.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A high-reliability butt-tightening quick connector for air-conditioning pipelines, comprising a nut and a pipe joint, wherein a limiting column is installed on the nut, an inner cavity is provided inside the nut, an outer cavity is provided at one end of the inner cavity, a hexagonal block is fixedly installed in the middle of the pipe joint, an inner groove is provided at the end of the pipe joint, an outer groove is provided on the outer side of the inner groove, a groove penetrating the outer wall is provided on the hexagonal block, a bottom plate is installed in the groove, an interlayer is provided on the bottom plate, a slide rail penetrating the outer wall is provided on the interlayer, a spring is installed inside the slide rail, a movable plate is installed at the interlayer, a notch penetrating the outer wall is provided at one end of the movable plate, a gasket is installed in the inner groove, a gasket is installed on one side of the gasket, and a sealing ring is installed on one side of the gasket.

[0007] In the above-mentioned high-reliability butt-tightening quick connector for air-conditioning pipelines, the nuts are symmetrically arranged at both ends of the pipe joint, the inner wall of the inner cavity is provided with threads, and the inner contour of the outer cavity is larger at the top and smaller at the bottom.

[0008] In the above-mentioned high-reliability butt-tightening quick connector for air-conditioning pipelines, the inner contour of the inner cavity is cylindrical, and the inner diameter of the inner cavity is larger than the pipe joint, and the inner cavity and the outer cavity are connected to each other.

[0009] In the above-mentioned high-reliability butt-tightening quick connector for air-conditioning pipelines, threads are provided on the outer walls of both ends of the pipe joint, and both ends of the pipe joint are inserted into the inner cavity, while the threads at the inner cavity and the pipe joint are meshed with each other.

[0010] In the above-mentioned high-reliability butt-tightening quick connector for air-conditioning pipelines, the inner groove and the outer groove are concentric, and the size of the inner groove is smaller than that of the outer groove.

[0011] In the above-mentioned high-reliability butt-tightening quick connector for air-conditioning pipes, the grooves are symmetrically arranged on the hexagonal block, and a pin is installed at one end of the base plate. The base plate is rotatably installed in the groove by the pin, and the length of the base plate is smaller than the groove.

[0012] In the above-mentioned air conditioning pipeline high-reliability butt-tightening quick connector, the interlayer and the movable plate have the same height. Meanwhile, a slider is installed at the bottom of the movable plate, and the movable plate is slidably connected through the slider and the slide rail.

[0013] In the above-mentioned high-reliability butt-tightening quick connector for air-conditioning pipelines, one end of the spring is connected to the inner wall of the slide rail, the other end of the spring is connected to the slider at the bottom of the movable plate, and the size of the notch is larger than the limiting column.

[0014] In the above-mentioned high-reliability butt-tightening quick connector for air-conditioning pipelines, the height of the bottom plate is smaller than the groove, and the bottom plates in the two grooves are symmetrically distributed, and the movable plates at the two locations face the nuts respectively.

[0015] In the above-mentioned high-reliability butt-tightening quick connector for air-conditioning pipelines, the gasket is located between the washer and the sealing ring, the washer is located in the inner groove, and the sealing ring is located in the outer groove.

[0016] Compared with the existing technology, the advantages of the utility model are:

[0017] When the utility model is used, the bottom plate is first moved to a position perpendicular to the groove, and then the nuts at both ends are tightened to the appropriate positions of the pipe joint. Then the bottom plate is moved downward to appropriately adjust the position of the nut so that the limit column is aligned with the notch, and the movable plate is pressed inward along the slide rail to deform and compress the spring. When the notch is aligned with one side of the limit column, it is loosened, and the elastic force of the spring is used to push the movable plate against the limit column for fixation. The movable plate is used to clamp the limit column to prevent the nut from loosening during vibration, thereby avoiding leakage of the pipeline quick connector.

[0018] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 It is an internal cross-sectional schematic diagram of the utility model.

[0021] Figure 3 It is a structural schematic diagram of the pipe joint in the utility model.

[0022] Figure 4 yes Figure 3 A magnified schematic diagram of center A.

[0023] In the figure: 1. nut; 11. limiting column; 12. inner cavity; 13. outer cavity; 2. pipe joint; 21. hexagonal block; 22. inner groove; 23. outer groove; 3. groove; 31. bottom plate; 311. interlayer; 32. slide rail; 33. spring; 34. movable plate; 35. notch; 4. washer; 5. gasket; 6. sealing ring. DETAILED DESCRIPTION

[0024] The utility model is further described below in conjunction with the accompanying drawings.

[0025] like Figure 1-4 As shown, a high-reliability butt-tightening quick connector for air-conditioning pipelines comprises a nut 1 and a pipe joint 2, a limiting column 11 is installed on the nut 1, an inner cavity 12 is provided inside the nut 1, an outer cavity 13 is provided at one end of the inner cavity 12, a hexagonal block 21 is fixedly installed in the middle of the pipe joint 2, an inner groove 22 is provided at the end of the pipe joint 2, an outer groove 23 is provided on the outer side of the inner groove 22, a groove 3 penetrating the outer wall is provided on the hexagonal block 21, a bottom plate 31 is installed in the groove 3, an interlayer 311 is provided on the bottom plate 31, a slide rail 32 penetrating the outer wall is provided on the interlayer 311, a spring 33 is installed inside the slide rail 32, a movable plate 34 is installed at the interlayer 311, a notch 35 penetrating the outer wall is provided at one end of the movable plate 34, a gasket 4 is installed in the inner groove 22, a gasket 5 is installed on one side of the gasket 4, and a sealing ring 6 is installed on one side of the gasket 5.

[0026] Combination Figure 1 , Figure 2 As shown, the nut 1 is symmetrically arranged at both ends of the pipe joint 2, the inner wall of the inner cavity 12 is provided with threads, and the inner contour of the outer cavity 13 is larger at the top and smaller at the bottom.

[0027] Furthermore, the nut 1 is installed on both ends of the pipe joint 2 through the threads on the inner wall of the inner cavity 12, and the outer cavity 13 can be used to connect with the external pipeline. The larger upper part and smaller lower part help to better fit the end of the external pipeline into the outer cavity 13.

[0028] Combination Figure 1 , Figure 2 As shown, the inner contour of the inner cavity 12 is cylindrical, and the inner diameter of the inner cavity 12 is larger than the pipe joint 2, and the inner cavity 12 and the outer cavity 13 are connected to each other. The outer walls of both ends of the pipe joint 2 are provided with threads, and the two ends of the pipe joint 2 are inserted into the inner cavity 12, and the threads at the inner cavity 12 and the pipe joint 2 are meshed with each other.

[0029] Furthermore, there is a distance between the threads at both ends of the pipe joint 2 and the hexagonal block 21 in the middle, and the length of the threads here is greater than the inner cavity 12 , so when the nut 1 is installed at both ends of the pipe joint 2 , there is a distance between the final meshing completion point and the hexagonal block 21 .

[0030] Combination Figure 1 , Figure 2 As shown, the inner groove 22 and the outer groove 23 are concentric, and the size of the inner groove 22 is smaller than that of the outer groove 23 .

[0031] Furthermore, the inner groove 22 and the outer groove 23 are used to install the gasket 4 and the sealing ring 6 respectively, and a gasket 5 is sandwiched between the gasket 4 and the sealing ring 6.

[0032] Combination Figure 1 , Figure 2 As shown, the groove 3 is symmetrically arranged on the hexagonal block 21, and a pin is installed at one end of the bottom plate 31. The bottom plate 31 is rotatably installed in the groove 3 through the pin, and the length of the bottom plate 31 is smaller than the groove 3.

[0033] Furthermore, the bottom plate 31 is rotatably installed in the groove 3 by means of a pin shaft. The bottom plate 31 can be folded and rotated when needed. At the same time, the nut 1 and the bottom plate 31 and other components are all metal components, and there is a certain damping feeling when folding, so the bottom plate 31 will not easily rotate based on the pin shaft without external force.

[0034] Combination Figure 1 , Figure 2 As shown, the interlayer 311 and the movable plate 34 have the same height. A slider is installed at the bottom of the movable plate 34, and the movable plate 34 is slidably connected with the slide rail 32 through the slider.

[0035] Furthermore, when installing different equipment, the engagement distance of the nut 1 on the pipe joint 2 may be greatly different due to the different equipment models and sizes. Therefore, the movable plate 34 is pressed to move it along the slide rail 32, and at the same time the internal spring 33 is deformed and compressed to generate elastic force, and then the notch 35 is clamped on the limit column 11 and fixed by using the elastic force of the spring 33.

[0036] Combination Figure 1 , Figure 2 As shown, one end of the spring 33 is connected to the inner wall of the slide rail 32 , and the other end of the spring 33 is connected to the slider at the bottom of the movable plate 34 . The size of the notch 35 is larger than the limiting column 11 .

[0037] Furthermore, limiting columns 11 are installed in the middle of the four faces of the nut 1 itself. Due to the special shape of the nut 1, two limiting columns 11 are blocked. At the same time, if it is inconvenient to use a wrench during installation, the nut 1 can be rotated simply by prying the limiting columns 11.

[0038] Combination Figure 1 , Figure 2 As shown, the height of the bottom plate 31 is smaller than the groove 3 , and the bottom plates 31 in the two grooves 3 are symmetrically distributed, and the movable plates 34 at the two locations face the nut 1 respectively.

[0039] Furthermore, the overall height of the bottom plate 31 and the movable plate 34 is lower than the groove 3, that is, the bottom plate 31 and the movable plate 34 are completely located inside the groove 3, which will not affect the normal use of the hexagonal block 21.

[0040] Combination Figure 1 , Figure 2 As shown, the gasket 5 is located between the gasket 4 and the sealing ring 6 , the gasket 4 is located in the inner groove 22 , and the sealing ring 6 is located in the outer groove 23 .

[0041] Furthermore, the washer 4 and the sealing ring 6 are used to block the inner cavity 12 and the outer cavity 13 respectively. The washer 4 and the sealing ring 6 cooperate with the gasket 5 to form a closed structure to avoid leakage in the connection between the nut 1 and the pipe joint 2.

[0042] The working principle of the utility model is:

[0043] When in use, first move the bottom plate 31 to a position perpendicular to the groove 3, install the gasket 4 in the inner groove 22, then place the gasket 5 on the gasket 4 and then install the sealing ring 6. The sealing ring 6 is now located in the outer groove 23, and then put the nut 1 on one end of the pipe joint 2. During this process, avoid thread misalignment and avoid the gasket 4, gasket 5 and sealing ring 6 from falling off.

[0044] The threads on the nut 1 and the pipe joint 2 are meshed with each other. When one end of the pipe joint 2 is against the outer cavity 13, the meshing of the nut 1 is completed. Then, the position of the limit column 11 is observed and the position of the nut 1 is appropriately adjusted so that the notch 35 and the limit column 11 are located on the same straight line.

[0045] Then the movable plate 34 slides inward along the slide rail 32 through the slider at the bottom. At this time, the internal spring 33 is deformed and compressed to generate elastic force. When the notch 35 is located on one side of the limit column 11, stop pressing the movable plate 34, and let the movable plate 34 move along the slide rail 32 toward the limit column 11 under the action of the elastic force of the spring 33. The notch 35 is sleeved on the outside of the limit column 11, and the elastic force of the spring 33 is used to push the movable plate 34 against the limit column 11, and the limit column 11 is clamped by the notch 35 to prevent the nut 1 from loosening while vibrating.

[0046] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways without departing from the spirit of the present invention.

[0047] Although this article uses more terms such as 1, nut; 11, limit column; 12, inner cavity; 13, outer cavity; 2, pipe joint; 21, hexagonal block; 22, inner groove; 23, outer groove; 3, groove; 31, bottom plate; 311, interlayer; 32, slide rail; 33, spring; 34, movable plate; 35, notch; 4, washer; 5, gasket; 6, sealing ring, etc., it does not exclude the possibility of using other terms. The use of these terms is only for more convenient description and explanation of the essence of the utility model. It is contrary to the spirit of the utility model to interpret them as any additional restrictions.

Claims

1. A high-reliability butt-tightening quick connector for air-conditioning pipelines, comprising a nut (1) and a pipe joint (2), characterized in that: A limiting column (11) is installed on the nut (1), an inner cavity (12) is provided inside the nut (1), an outer cavity (13) is provided at one end of the inner cavity (12), a hexagonal block (21) is fixedly installed in the middle of the pipe joint (2), an inner groove (22) is provided at the end of the pipe joint (2), an outer groove (23) is provided on the outer side of the inner groove (22), a groove (3) penetrating the outer wall is provided on the hexagonal block (21), a bottom plate (31) is installed in the groove (3), The bottom plate (31) is provided with an interlayer (311), a slide rail (32) penetrating the outer wall is provided on the interlayer (311), a spring (33) is installed inside the slide rail (32), a movable plate (34) is installed at the interlayer (311), a notch (35) penetrating the outer wall is provided at one end of the movable plate (34), a gasket (4) is installed in the inner groove (22), a gasket (5) is installed on one side of the gasket (4), and a sealing ring (6) is installed on one side of the gasket (5).

2. The high-reliability butt-tightening quick connector for air-conditioning pipelines according to claim 1 is characterized in that: The nuts (1) are symmetrically arranged at the two ends of the pipe joint (2); the inner wall of the inner cavity (12) is provided with threads; and the inner contour of the outer cavity (13) is larger at the top and smaller at the bottom.

3. The high-reliability butt-tightening quick connector for air-conditioning pipelines according to claim 2 is characterized in that: The inner contour of the inner cavity (12) is cylindrical, and the inner diameter of the inner cavity (12) is larger than the pipe joint (2). The inner cavity (12) and the outer cavity (13) are connected to each other.

4. The high-reliability butt-tightening quick connector for air-conditioning pipelines according to claim 3 is characterized in that: The outer walls of both ends of the pipe joint (2) are provided with threads, and the two ends of the pipe joint (2) are inserted into the inner cavity (12), and the threads at the inner cavity (12) and the pipe joint (2) are meshed with each other.

5. The high-reliability butt-tightening quick connector for air-conditioning pipelines according to claim 4 is characterized in that: The inner groove (22) and the outer groove (23) are concentric, and the size of the inner groove (22) is smaller than that of the outer groove (23).

6. The high-reliability butt-tightening quick connector for air-conditioning pipelines according to claim 5 is characterized in that: The groove (3) is symmetrically arranged on the hexagonal block (21), and a pin is installed at one end of the bottom plate (31). The bottom plate (31) is rotatably installed in the groove (3) through the pin, and the length of the bottom plate (31) is smaller than the groove (3).

7. The high-reliability butt-tightening quick connector for air-conditioning pipelines according to claim 6 is characterized in that: The interlayer (311) and the movable plate (34) have the same height, and a slider is installed at the bottom of the movable plate (34). The movable plate (34) is slidably connected to the slide rail (32) via the slider.

8. The high-reliability butt-tightening quick connector for air-conditioning pipelines according to claim 7 is characterized in that: One end of the spring (33) is connected to the inner wall of the slide rail (32), and the other end of the spring (33) is connected to the slider at the bottom of the movable plate (34). The size of the notch (35) is larger than the limiting column (11).

9. The high-reliability butt-tightening quick connector for air-conditioning pipelines according to claim 8, characterized in that: The height of the bottom plate (31) is smaller than that of the groove (3), and the bottom plates (31) are symmetrically distributed in the two grooves (3), and the movable plates (34) at the two locations face the nut (1) respectively.

10. The high-reliability butt-tightening quick connector for air-conditioning pipelines according to claim 9, characterized in that: The gasket (5) is located between the gasket (4) and the sealing ring (6), the gasket (4) is located in the inner groove (22), and the sealing ring (6) is located in the outer groove (23).

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