A securely fastened quick-release connector for refrigeration and air conditioning piping.
By replacing the spring design with a rigid stabilizing mechanism and using components such as stabilizing rods, mounting rings, and stabilizing rings for multi-dimensional fixation, the problem of slip ring loosening and reduced sealing performance caused by spring fatigue in existing technologies is solved, thereby improving the stability and vibration resistance of the connection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HENAN ZHENGRI ENVIRONMENTAL TECHNOLOGY CO LTD
- Filing Date
- 2025-09-12
- Publication Date
- 2026-07-03
AI Technical Summary
Existing quick-release pipe connectors are prone to fatigue failure due to the spring elastic reset design, which can lead to slip ring loosening, affecting connection stability and sealing. Furthermore, the lack of auxiliary fixation for the pipe at the connection end makes them susceptible to relative displacement and reduced sealing performance.
A rigid stabilizing mechanism is adopted, including components such as stabilizing rod, mounting ring, stabilizing ring, rotating frame and limit block. It replaces the spring elastic reset design with mechanical limiting and multi-dimensional fixed support, and adds auxiliary fixation to the pipe at the connection end.
It effectively solves the problem of slip ring loosening caused by spring fatigue, improves the stability and vibration resistance of the connection, prevents the decline in sealing performance, extends service life and reduces maintenance costs.
Smart Images
Figure CN224454070U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of air conditioning pipe connectors, specifically a quick-release connector for refrigeration and air conditioning pipes that provides a secure and reliable connection. Background Technology
[0002] Against the backdrop of the continuous development of the global refrigeration and air conditioning industry, air conditioning equipment has been widely used in various scenarios such as residential buildings, commercial buildings, and industrial plants. It has become a key device for regulating indoor temperature and ensuring a comfortable environment for production and life. The stable operation of air conditioning systems is highly dependent on the reliability of the piping system. As the core component connecting the indoor and outdoor units of air conditioning and various auxiliary equipment, the connection performance of the pipe connector directly affects the cooling efficiency, media sealing and service life of the entire air conditioning system. As air conditioning equipment develops towards larger size, higher efficiency and intelligence, the market has put forward higher requirements for the ease of installation, secure fixing and vibration resistance of pipe connectors. Especially in long-term high-load operation scenarios such as industrial air conditioning and commercial central air conditioning, connectors need to withstand multiple tests such as pipeline medium pressure fluctuations, equipment operation vibration and ambient temperature changes. Therefore, the development of pipe connectors with both quick disassembly and assembly and stable connection characteristics has become one of the important directions for industry technology optimization.
[0003] Currently, quick-release pipe connectors for refrigeration and air conditioning systems are increasingly widely used in air conditioning system installation, commissioning, maintenance, and repair due to their advantages of requiring no complex tools and high installation and disassembly efficiency. Most existing quick-release connectors adopt a basic structure of "male-female + ball-shaped locking," and their working process is roughly as follows: First, the female connector is inserted into the male connector, aligning the groove on the outer arc surface of the female connector with the ball in the mounting hole at the front end of the male connector. Then, the slip ring on the outer side of the male connector is pushed, and the ball is forced into the groove of the female connector by the inner wall of the slip ring, achieving initial fixation between the male and female connectors. Simultaneously, some quick-release connectors have a rubber sealing gasket on the inner side of the male connector. The compression contact between the female connector and the sealing gasket improves the sealing performance of the medium. Furthermore, to maintain the stability of the slip ring position, existing technologies often place a spring between the slip ring and the male connector. The elastic restoring force of the spring tightens the slip ring, preventing the ball from dislodging from the groove due to vibration, ensuring the stability of the connection structure during equipment operation.
[0004] However, existing quick-release pipe connectors still have some problems in practical applications. The design that relies on springs to maintain the slip ring's fixed state has significant defects. During long-term use, the spring is prone to weakening or even failure due to metal fatigue. Especially under conditions of frequent start-stop of air conditioning equipment and frequent pipe vibration, the spring's elasticity decays faster, leading to slip ring loosening. The ball can easily fall out of the female connector's groove, causing the male and female connectors to loosen. This not only affects the cooling efficiency of the air conditioning system but may also lead to refrigerant leakage in the pipes, posing safety hazards and economic losses. On the other hand, the fixing structure of existing quick-release connectors is mostly concentrated at the direct connection between the male and female connectors, lacking auxiliary fixing design for external pipes at the connection end. When the equipment vibrates during operation or there is an impact from the external environment, the joint between the connector and the pipe is prone to relative displacement. Over time, this will aggravate the wear of the sealing gasket, leading to a decrease in sealing performance. It will also shorten the overall service life of the connector and increase the later maintenance costs and inspection frequency. Therefore, we propose a reliable quick-release pipe connector for refrigeration and air conditioning. Utility Model Content
[0005] The technical problem to be solved by this utility model is to overcome the existing defects and provide a fast-release connector for refrigeration and air conditioning pipes that is fixed and reliable. The rigid fixing structure replaces the spring elastic return design and adds auxiliary fixing to the pipe at the connection end, which can effectively solve the problems in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a securely fixed quick-release connector for refrigeration and air conditioning pipes, comprising a male connector and a female connector. The front end of the male connector has evenly distributed mounting holes, each with a ball inside. The outer arc surface of the female connector has a fixing groove that engages with the ball. The front end of the outer arc surface of the male connector is fitted with a slip ring that engages with the ball. The connector also includes a stabilizing mechanism.
[0007] The stabilizing mechanism includes a stabilizing rod, a mounting ring, a stabilizing ring, a rotating frame, and a limiting block. The stabilizing rods are rotatably connected to the left and right sides of the outer arc surface at the rear end of the male connector and the left and right sides of the outer arc surface at the front end of the female connector, respectively. Mounting rings are fixedly connected between two horizontally adjacent stabilizing rods, and stabilizing rings are slidably connected inside the mounting rings. The rotating frame is fixedly connected between the two upper stabilizing rods. The rod in the middle of the rotating frame is rotatably connected to the limiting block. The lower end of the limiting block cooperates with the rear side of the slip ring. By replacing the spring elastic return design with a rigid fixing structure and adding auxiliary fixing to the pipe at the connection end, it can effectively solve the problem of slip ring loosening caused by spring fatigue in existing quick-release connectors, while improving the overall stability of the connection structure.
[0008] Furthermore, the stabilizing mechanism also includes a pin, and the stabilizing rod is rotatably connected to the outer arc surface of the male head and the outer arc surface of the female head through the pin, providing rotational support.
[0009] Furthermore, the outer arc surface of the male head is provided with a rib groove, and the inner arc surface of the slip ring is fixedly connected with a rib. The rib and the rib groove are slidably connected, providing stable sliding support.
[0010] Furthermore, the lower end of the limiting block is inserted into the rear end of the rib groove, and the front side of the limiting block contacts the rear side of the slip ring. The limiting block is used to maintain the fixed state of the slip ring instead of the spring elastic return.
[0011] Furthermore, the stabilizing mechanism also includes insertion holes and pins. The insertion holes are respectively opened at the left end of the inner sidewall of the two mounting rings and the left end of the stabilizing ring. Pins are inserted between two adjacent insertion holes for connection.
[0012] Furthermore, it also includes connecting plates, which are fixedly connected to the right side of the two right-side stabilizing rods respectively. The two connecting plates are used together for connection.
[0013] Furthermore, a rubber sealing gasket is installed on the rear inner wall of the male connector, and the rear side of the female connector contacts the front side of the rubber sealing gasket to ensure a seal.
[0014] Compared with the prior art, the beneficial effects of this utility model are: This securely fixed quick-release connector for refrigeration and air conditioning piping has the following advantages:
[0015] 1. Through the coordinated action of components such as pins, stabilizing rods, mounting rings, and limiting blocks, multi-dimensional and rigid fixed support can be formed from the left and right sides of the male and female connectors and the circumference of the external pipe. On the one hand, with the help of the limiting blocks on the rotating frame and the cooperation of the rib grooves and slip rings, the position of the slip ring can be directly mechanically limited to prevent it from shifting during pipeline operation vibration. When assembling and maintaining refrigeration and air conditioning pipelines, this replaces the existing technology that relies on spring elastic reset to maintain the slip ring's fixed state, effectively solving the problem of spring fatigue failure and reduced elasticity leading to slip ring loosening after long-term use.
[0016] 2. During the assembly and maintenance of refrigeration and air conditioning piping, the sliding fit between the mounting ring and the stabilizing ring can encircle the pipes at the male and female connection ends, further enhancing the overall connection structure's resistance to vibration and displacement. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of this utility model;
[0018] Figure 2 This is a schematic diagram of the rear structure of the present invention;
[0019] Figure 3 This is a schematic diagram of the partial explosion of the male and female heads of this utility model;
[0020] Figure 4 This is a partial structural diagram of the stabilizing mechanism of this utility model.
[0021] In the diagram: 1 Male head, 2 Mounting hole, 3 Ball, 4 Rib groove, 5 Slip ring, 51 Rib, 6 Female head, 7 Fixing groove, 8 Stabilizing mechanism, 81 Pin, 82 Stabilizing rod, 83 Mounting ring, 84 Stabilizing ring, 85 Insertion hole, 86 Pin, 87 Rotating frame, 88 Limiting block, 9 Rubber sealing gasket, 10 Connecting plate. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figure 1-4 This embodiment provides a technical solution: a securely fixed quick-release connector for refrigeration and air conditioning pipes, including a male connector 1 and a female connector 6 (both the rear end of the male connector 1 and the front end of the female connector 6 are provided with threaded grooves). The front end of the male connector 1 is provided with evenly distributed mounting holes 2, and each mounting hole 2 is provided with a ball 3. The outer arc surface of the female connector 6 is provided with a fixing groove 7, which is used in conjunction with the ball 3. The front end of the outer arc surface of the male connector 1 is fitted with a slip ring 5, and the outer arc surface of the male connector 1 is provided with a rib groove 4. The inner arc surface of the slip ring 5 is fixedly connected with a rib 51, which is slidably connected to the rib groove 4. The front end of the slip ring 5 is used in conjunction with the ball 3. A rubber sealing gasket 9 is installed on the rear inner wall of the male connector 1, and the rear side of the female connector 6 contacts the front side of the rubber sealing gasket 9. It also includes a stabilizing mechanism 8.
[0024] Stabilizing mechanism 8 includes stabilizing rods 82, mounting rings 83 and stabilizing rings 84, a rotating frame 87, and limiting blocks 88. Stabilizing rods 82 are rotatably connected to the left and right sides of the outer arc surface at the rear end of the male connector 1 and the left and right sides of the outer arc surface at the front end of the female connector 6, respectively. Mounting rings 83 are fixedly connected between two laterally adjacent stabilizing rods 82. Stabilizing rings 84 are slidably connected inside each mounting ring 83 (each mounting ring 83 has a limiting plate inside its left end, and each stabilizing ring 84 has a fixed limiting piece connected to its right end; the limiting piece prevents the stabilizing ring 84 from falling out of the mounting ring 83 due to the limitation of the limiting plate). The rotating frame 87 is fixedly connected between the two upper stabilizing rods 82. The rod in the middle of the rotating frame 87 is rotatably connected to the limiting block 88. The lower end of the limiting block 88 is connected to the sliding ring 5. The stabilizing mechanism 8 also includes a pin 81, which is used in conjunction with the rear side of the male head 1 and the female head 6. The stabilizing rod 82 is rotatably connected to the outer arc surface of the male head 1 and the outer arc surface of the female head 6 through the pin 81. The lower end of the limiting block 88 is inserted into the rear end of the rib groove 4, and the front side of the limiting block 88 contacts the rear side of the slip ring 5. The stabilizing mechanism 8 also includes a socket 85 and a pin 86. The socket 85 is respectively opened at the left end of the inner side wall of the two mounting rings 83 and the left end of the stabilizing ring 84. A pin 86 is inserted between two adjacent sockets 85. The mechanism also includes a connecting plate 10, which is fixedly connected to the right side of the two right-side stabilizing rods 82. The two connecting plates 10 are used in conjunction with each other. First, the front end of the female head 6 is inserted into the male head 1 until the rear side of the female head 6 contacts the rear side of the male head 1. The rubber sealing gasket 9 of the wall is completely fitted. At this time, the rubber sealing gasket 9 deforms due to compression, initially blocking the leakage channel of the medium in the pipeline. At the same time, the fixing groove 7 on the outer arc surface of the female connector 6 is precisely aligned with the mounting hole 2 at the front end of the male connector 1, pushing the slip ring 5 on the outer arc surface of the male connector 1 to slide forward axially. The rib 51 on the inner arc surface of the slip ring 5 moves directionally along the rib groove 4 on the outer arc surface of the male connector 1 to prevent the slip ring 5 from rotating and shifting during sliding. As the slip ring 5 moves forward, its front inner wall gradually squeezes the ball 3 in the mounting hole 2, forcing the ball 3 to slide inward. Finally, part of the ball 3 is embedded in the fixing groove 7 of the female connector 6. Through the interlocking action of the ball 3 and the fixing groove 7, the male connector 1 and the female connector 6 are initially mechanically fixed, preventing them from separating axially. At the same time, the two upper stabilizers are rotated. Rotate the retaining rod 82 backward. At this time, the inner arc surface of the mounting ring 83 at the rear end of the two upper retaining rods 82 is in contact with the outer arc surface of the pipe at the male end 1. The limiting block 88 is inserted into the rear end of the rib groove 4 to limit the position of the slip ring 5. Then rotate the two lower retaining rods 82 forward. At this time, the inner arc surface of the mounting ring 83 at the front end of the two lower retaining rods 82 is in contact with the outer arc surface of the pipe at the female end 6. Then the worker rotates the two retaining rings 84 out of the mounting ring 83 so that the insertion hole 85 at the left end of the retaining ring 84 is aligned with the insertion hole 85 at the left end of the mounting ring 83, and inserts the pin 86. Finally, insert the external bolt into the connection port of the two connecting plates 10, screw the nut on the lower end of the bolt, and use a wrench or other tools to loosen and remove the nut inside the connection port of the two connecting plates 10.Then, remove the bolts penetrating the connecting plate 10, releasing the fixing relationship between the two connecting plates 10 and eliminating the lateral constraint of the right-side stabilizing rod 82. Hold both ends of the pin 86 with both hands and apply force outward along the axial direction of the insertion hole 85 to completely pull the pin 86 out of the insertion hole 85 of the mounting ring 83 and the stabilizing ring 84, releasing the lock between the stabilizing ring 84 and the mounting ring 83. Next, slide the stabilizing ring 84 into the mounting ring 83, so that the stabilizing ring 84 is completely retracted into the mounting ring 83, no longer enclosing the two pipes of the male connector 1 and the female connector 6. Using the pin 81 as the axis of rotation, rotate the two lower stabilizing rods 82 away from the center of the connector, causing the mounting ring 83 at the front end of the lower stabilizing rod 82 to disengage from the outer arc surface of the pipe at the end of the female connector 6, until the stabilizing rod 82 rotates to its initial position with a large angle to the pipe axis, avoiding obstruction of subsequent operations. Similarly, using the pin 81 as the axis of rotation, rotate the upper stabilizing rod 82 away from the center of the connector. Two stabilizing rods 82 drive the rotating frame 87 and the mounting ring 83 to move synchronously, causing the upper mounting ring 83 to disengage from the outer arc surface of the pipe at the male end 1 until the upper stabilizing rods 82 also rotate to their initial positions, completing the overall reset of the stabilizing mechanism 8. At this time, the lower end of the limiting block 88 completely disengages from the rib groove 4 of the male end 1, and the front side of the limiting block 88 separates from the rear side of the slip ring 5, no longer obstructing the movement of the slip ring 5. Grasp the outer arc surface of the slip ring 5 and pull the slip ring 5 axially backward along the rib groove 4 of the male end 1. The ribs 51 on the inner arc surface of the slip ring 5 move directionally along the rib groove 4, preventing the slip ring 5 from rotating. As the slip ring 5 moves backward, the pressure on the ball 3 stops. Grasp the non-connecting ends of the male end 1 and the female end 6 and apply axial pulling force in the opposite direction, causing the front end of the female end 6 to be gradually pulled out from inside the male end 1 until the rear side of the female end 6 completely separates from the rubber sealing gasket 9 on the inner wall of the rear side of the male end 1. Finally, the male end 1 and the female end 6 are completely disassembled, completing the entire pipeline separation operation and improving stability. ,
[0025] The working principle of the quick-release connector for refrigeration and air conditioning pipes provided by this utility model is as follows: First, insert the front end of the female connector 6 into the male connector 1 until the rear side of the female connector 6 is completely in contact with the rubber sealing gasket 9 on the rear inner wall of the male connector 1. At this time, the rubber sealing gasket 9 deforms due to compression, initially blocking the leakage channel of the medium in the pipe. At the same time, the fixing groove 7 on the outer arc surface of the female connector 6 is precisely aligned with the mounting hole 2 at the front end of the male connector 1, pushing the slip ring 5 on the outer arc surface of the male connector 1 to slide forward axially. The ribs on the inner arc surface of the slip ring 5... 51 moves directionally along the rib groove 4 on the outer arc surface of the male head 1 to prevent rotational displacement of the slip ring 5 during sliding. As the slip ring 5 moves forward, its front inner wall gradually presses against the ball 3 in the mounting hole 2, forcing the ball 3 to slide inward. Finally, part of the ball 3 is embedded in the fixing groove 7 of the female head 6. Through the interlocking action of the ball 3 and the fixing groove 7, the male head 1 and the female head 6 are initially mechanically fixed to prevent axial separation. At the same time, the two upper stabilizing rods 82 are rotated backward. At this time, the rear ends of the two upper stabilizing rods 82 The inner arc surface of the mounting ring 83 is fitted against the outer arc surface of the pipe at the male end 1. The limiting block 88 is inserted into the rear end of the rib groove 4 to limit the position of the slip ring 5. Then, the two lower stabilizing rods 82 are rotated forward. At this time, the inner arc surface of the mounting ring 83 at the front end of the two lower stabilizing rods 82 is fitted against the outer arc surface of the pipe at the female end 6. Then, the worker rotates the two stabilizing rings 84 out of the mounting ring 83 so that the insertion hole 85 at the left end of the stabilizing ring 84 is aligned with the insertion hole 85 at the left end of the mounting ring 83, and inserts the pin 86. Finally, the external bolt is inserted. Insert the bolt into the connection port of the two connecting plates 10, screw the lower end of the bolt onto the nut, use a wrench or other tools to loosen and remove the nut inside the connection port of the two connecting plates 10, then pull out the bolt that passes through the connecting plate 10, release the fixed relationship between the two connecting plates 10, eliminate the lateral constraint of the right-side stabilizing rod 82, hold both ends of the pin 86 with both hands, apply force outward along the axial direction of the insertion hole 85, and completely pull the pin 86 out of the insertion hole 85 of the mounting ring 83 and the stabilizing ring 84, releasing the lock between the stabilizing ring 84 and the mounting ring 83.Next, slide the retaining ring 84 into the mounting ring 83 until it is completely retracted into the mounting ring 83, no longer enclosing the two pipes of male connector 1 and female connector 6. Using the pin 81 as the axis of rotation, rotate the two lower retaining rods 82 away from the center of the connector, causing the mounting ring 83 at the front end of the lower retaining rod 82 to disengage from the outer arc surface of the pipe at the female connector 6 end. Continue rotating the retaining rod 82 until it reaches its initial position, forming a large angle with the pipe axis, to avoid obstructing subsequent operations. Similarly, using the pin 81 as the axis of rotation, rotate the upper retaining rod 84 away from the center of the connector. Two stabilizing rods 82 drive the rotating frame 87 and the mounting ring 83 to move synchronously, causing the upper mounting ring 83 to disengage from the outer arc surface of the pipe at the male end 1 until the upper stabilizing rods 82 also rotate to their initial positions, completing the overall reset of the stabilizing mechanism 8. At this time, the lower end of the limiting block 88 completely disengages from the rib groove 4 of the male end 1, and the front side of the limiting block 88 separates from the rear side of the slip ring 5, no longer obstructing the movement of the slip ring 5. Grasp the outer arc surface of the slip ring 5 and pull the slip ring 5 axially backward along the rib groove 4 of the male end 1. The ribs 51 on the inner arc surface of the slip ring 5 move directionally along the rib groove 4, preventing the slip ring 5 from rotating. As the slip ring 5 moves backward, the pressure on the ball 3 stops. Grasp the non-connecting ends of the male end 1 and the female end 6 and apply axial pulling force in the opposite direction, causing the front end of the female end 6 to be gradually pulled out from inside the male end 1 until the rear side of the female end 6 is completely separated from the rubber sealing gasket 9 on the inner wall of the rear side of the male end 1, finally achieving the complete disassembly of the male end 1 and the female end 6, completing the entire pipeline separation operation.
[0026] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A securely fixed quick-release connector for refrigeration and air conditioning piping, comprising a male connector (1) and a female connector (6), wherein the front end of the male connector (1) is provided with evenly distributed mounting holes (2), each mounting hole (2) having a ball (3) inside; the outer arc surface of the female connector (6) is provided with a fixing groove (7), the fixing groove (7) cooperating with the ball (3); the front end of the outer arc surface of the male connector (1) is fitted with a slip ring (5), the front end of the slip ring (5) cooperating with the ball (3), characterized in that: It also includes stabilizing mechanisms (8); The stabilizing mechanism (8) includes a stabilizing rod (82), a mounting ring (83), a stabilizing ring (84), a rotating frame (87), and a limiting block (88). The stabilizing rod (82) is rotatably connected to the left and right sides of the outer arc surface at the rear end of the male head (1) and the left and right sides of the outer arc surface at the front end of the female head (6). The mounting ring (83) is fixedly connected between two horizontally adjacent stabilizing rods (82). The mounting ring (84) is slidably connected inside the mounting ring (83). The rotating frame (87) is fixedly connected between the two stabilizing rods (82) on the upper side. The rod in the middle of the rotating frame (87) is rotatably connected to the limiting block (88). The lower end of the limiting block (88) is used in conjunction with the rear side of the slip ring (5).
2. The fixed and reliable refrigeration air pipe quick release connector according to claim 1, characterized in that: The stabilizing mechanism (8) also includes a pin (81), and the stabilizing rod (82) is rotatably connected to the outer arc surface of the male head (1) and the outer arc surface of the female head (6) through the pin (81).
3. The fixed and reliable refrigeration air pipe quick release connector according to claim 1, characterized in that: The outer arc surface of the male head (1) is provided with a rib groove (4), and the inner arc surface of the slip ring (5) is fixedly connected with a rib (51), and the rib (51) is slidably connected to the rib groove (4).
4. The fixed and reliable refrigeration air pipe quick release connector according to claim 3, characterized in that: The lower end of the limiting block (88) is inserted into the rear end of the rib groove (4), and the front side of the limiting block (88) contacts the rear side of the slip ring (5).
5. The fixed secure refrigeration air pipe quick release connector according to claim 1, characterized in that: The stabilizing mechanism (8) also includes a socket (85) and a pin (86). The socket (85) is respectively opened at the left end of the inner sidewall of the two mounting rings (83) and the left end of the stabilizing ring (84). A pin (86) is inserted between two adjacent sockets (85).
6. The fixed secure refrigeration air pipe quick release connector according to claim 1, characterized in that: It also includes a connecting plate (10), which is fixedly connected to the right side of the two right-side stabilizing rods (82) respectively, and the two connecting plates (10) are used together.
7. The fixed secure refrigeration air pipe quick release connector according to claim 1, characterized in that: A rubber sealing gasket (9) is installed on the rear inner wall of the male head (1), and the rear side of the female head (6) contacts the front side of the rubber sealing gasket (9).