Connecting piece of fluid pipeline
By using a connection mechanism that combines a metal ball with a slot, along with an auxiliary fixing sleeve and a spring structure, the problems of complex fluid pipeline connections and inconvenient disassembly are solved, enabling fast and stable connection and disassembly, and improving construction efficiency and maintenance convenience.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI LOCKE RING TECHNOLOGY CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-05-01
AI Technical Summary
Existing fluid pipeline connectors are complex to connect, time-consuming and labor-intensive, and inconvenient to disassemble, which affects construction efficiency and maintenance costs.
The connection mechanism, which uses a metal ball and a slot, combined with an auxiliary fixing sleeve and a spring structure, enables quick connection and disassembly of fluid pipelines and connectors. The ball's limiting position and the spring structure work together to ensure the stability and convenience of the connection.
It enables quick and secure connection and disassembly between fluid pipelines and connectors, improving operational efficiency and connection reliability, and reducing operational risks and maintenance costs.
Smart Images

Figure CN224188243U_ABST
Abstract
Description
A connector for a fluid pipeline Technical Field
[0001] This utility model relates to the field of pipeline connection technology, and in particular to a connector for fluid pipelines. Background Technology
[0002] Fluid piping fittings are mechanical components specifically designed to connect, branch, bend, or terminate fluid (such as liquids, gases, steam, etc.) pipelines. They are an indispensable part of piping systems, their main function being to ensure that pipelines can be extended, turned, have their diameter changed, or be safely and reliably connected to other equipment / pipelines as designed, forming a complete and sealed transport channel. These fittings come in a wide variety of types and shapes, commonly including joints, flanges, elbows, tees, crosses, reducers, caps, quick couplings, etc. They typically need to possess sufficient strength, corrosion resistance, pressure resistance, and good sealing performance to withstand the pressure, temperature, and chemical properties of the fluid within the pipeline, preventing leaks and ensuring the smooth and safe transmission of fluids within the piping system.
[0003] In fluid piping systems, connectors are a critical component, and their performance directly impacts the overall system's operational efficiency and ease of maintenance. However, existing fluid piping connectors currently have several shortcomings in use. Typically, the connection between connectors and pipelines is complex, involving cumbersome procedures and precise positioning requirements. This results in significant time consumption during pipeline connection, reducing construction efficiency and potentially increasing the risk of errors due to improper operation. Furthermore, when pipeline maintenance, replacement, or adjustment is required, the disassembly process is inconvenient, time-consuming, and labor-intensive, causing considerable disruption to maintenance work and severely impacting the overall user experience and maintenance costs of the fluid piping system. Summary of the Invention
[0004] One objective of this invention is to provide a connector for fluid pipelines. This invention addresses the issues raised in the background, such as the excessive time spent connecting pipelines, which not only reduces construction efficiency but also increases the risk of errors due to improper operation. Furthermore, the disassembly process is quite inconvenient, time-consuming, and labor-intensive when pipelines need to be inspected, replaced, or adjusted, causing significant inconvenience to maintenance work and seriously affecting the overall user experience and maintenance costs of fluid pipeline systems.
[0005] A fluid pipeline connector according to an embodiment of the present invention includes a connector body, an auxiliary fixing sleeve, a fluid pipeline body, an auxiliary fixing mechanism, and a connecting mechanism. The connecting mechanism includes a metal ball and a groove. The groove is formed on the side surface of the fluid pipeline body. A ball groove is formed on the surface of the connector body. The ball is movably installed inside the ball groove. The auxiliary fixing sleeve is slidably installed at both ends of the outer surface of the connector body. The auxiliary fixing mechanism includes a first locking rod, a second locking rod, and a hook. The hook is rotatably installed on the side surface of the connector body. The first locking rod is fixedly installed on the inner surface of the auxiliary fixing sleeve, and the second locking rod is fixedly installed on the side surface of the connector body.
[0006] Preferably, the diameters of the upper and lower openings of the ball groove are both smaller than the diameter of the metal ball itself, so that the metal ball can only move inside the ball groove and will not fall out of the ball groove.
[0007] Preferably, the inner end of the auxiliary fixing sleeve is provided with a limiting groove for limiting the metal ball.
[0008] Preferably, the inner side of the auxiliary fixing sleeve is provided with a first step, and the outer surface of the connector body is provided with a second step.
[0009] Preferably, a spring structure is installed between the first step and the second step, and the auxiliary fixing sleeve is slidably installed on the outer surface of the connector body through the spring structure.
[0010] Preferably, the hook is rotatably mounted on the outer surface of the connector body via a rotating shaft.
[0011] Preferably, one end of the rotating shaft is fixedly equipped with a handle that facilitates manual rotation of the hook and the rotating shaft.
[0012] Preferably, during the installation and disassembly of the fluid pipeline body, the position of the auxiliary fixing sleeve is locked by hooking the first and second locking rods on both sides.
[0013] The beneficial effects of this utility model are:
[0014] This invention, through its connecting mechanism, first slides the auxiliary fixing sleeve towards the center when connecting the fluid pipeline body to both ends of the connector body, compressing the spring structure. Then, the fluid pipeline body is inserted into the connector body. During insertion, the outer wall of the fluid pipeline body slowly presses the metal ball inside the groove outwards via its inclined surface, positioning the metal ball within the groove and the limiting groove on the inner side of the auxiliary fixing sleeve. This continues until the slot on the side surface of the fluid pipeline body reaches directly below the ball. At this point, the spring structure's restoring force causes the auxiliary fixing sleeve to slide outwards, while simultaneously, the inner wall of the auxiliary fixing sleeve presses the ball towards the slot, positioning the ball within the slot and groove. By locking the position between the fluid pipeline body and the connector body through the limiting position of the ball, the connection efficiency between the fluid pipeline body and the connector body is greatly facilitated. When disassembling, the auxiliary fixing sleeve is manually slid towards the middle until the spring structure is squeezed to the limit. At the same time, after the limiting groove of the auxiliary fixing sleeve slides to the position of the ball, the fluid pipeline body is directly pulled out from the inside of the connector body. The outer wall of the fluid pipeline body will squeeze the metal ball outward, so that the ball is inside the limiting groove and the ball groove until the fluid pipeline body is completely pulled out. By using the limiting effect of the spring structure and the metal ball, the quick and stable connection and disassembly between the fluid pipeline and the connector are realized, improving the operating efficiency and connection reliability.
[0015] This utility model, through the provision of an auxiliary fixing mechanism, allows the auxiliary fixing sleeve to slide towards the center during the insertion of the fluid pipeline body into the connector body. Manually rotating the handle then drives the hook to rotate via the rotating shaft, hooking the first locking rod fixed on one side of the auxiliary fixing sleeve and the second locking rod fixed on the side surface of the connector body. This prevents the auxiliary fixing sleeve from being ejected by the spring structure, thus avoiding interference with the connection process of the fluid pipeline body. During disassembly, the auxiliary fixing mechanism can also hold the auxiliary fixing sleeve in this position, preventing it from interfering with the normal disassembly process of the fluid pipeline and ensuring the stability of the connection process. This achieves both stability and convenience in the connection and disassembly processes. Attached Figure Description
[0016] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0017] Figure 1 is a structural schematic diagram of a fluid pipeline connector proposed in this utility model;
[0018] Figure 2 is an enlarged view of point A in Figure 1 of a fluid pipeline connector proposed in this utility model;
[0019] Figure 3 is a cross-sectional view of the internal structure of a fluid pipeline connector proposed in this utility model;
[0020] Figure 4 is an enlarged view of point B in Figure 3 of a fluid pipeline connector proposed in this utility model;
[0021] In the diagram: 1. Connector body; 2. Auxiliary fixing sleeve; 3. Fluid pipeline body; 4. Auxiliary fixing mechanism; 401. First locking rod; 402. Second locking rod; 403. Rotating shaft; 404. Handle; 405. Hook; 5. Connecting mechanism; 501. First step; 502. Second step; 503. Spring structure; 504. Limiting groove; 505. Ball groove; 506. Metal ball; 507. Locking groove. Detailed Implementation
[0022] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.
[0023] Referring to Figures 1-4, a fluid pipeline connector includes a connector body 1, an auxiliary fixing sleeve 2, a fluid pipeline body 3, an auxiliary fixing mechanism 4, and a connecting mechanism 5. The connecting mechanism 5 includes a metal ball 506 and a groove 507. The groove 507 is formed on the side surface of the fluid pipeline body 3. A ball groove 505 is formed on the surface of the connector body 1, and the ball is movably installed inside the ball groove 505. The auxiliary fixing sleeve 2 is slidably installed at both ends of the outer surface of the connector body 1. The auxiliary fixing mechanism 4 includes a first locking rod 401, a second locking rod 402, and a hook 405. The hook 405 is rotatably installed on the connecting... On the side surface of the connector body 1, a first locking rod 401 is fixedly installed on the inner surface of the auxiliary fixing sleeve 2, and a second locking rod 402 is fixedly installed on the side surface of the connector body 1. Through the connecting mechanism 5, when the fluid pipeline body 3 is connected to both ends of the connector body 1, the auxiliary fixing sleeve 2 is first slid towards the center, causing the spring structure 503 to be compressed. Then, the fluid pipeline body 3 is inserted into the connector body 1. During insertion, the outer wall of the fluid pipeline body 3 slowly compresses the metal ball 506 inside the ball groove 505 outwards through its inclined surface, causing the metal ball 506... Within the limiting groove 504 inside the ball groove 505 and the auxiliary fixing sleeve 2, until the slot 507 on the side surface of the fluid pipeline body 3 reaches directly below the ball, the restoring force of the spring structure 503 causes the auxiliary fixing sleeve 2 to slide outward. Simultaneously, the inner wall of the auxiliary fixing sleeve 2 presses the ball towards the slot 507, placing the ball inside the slot 507 and the ball groove 505. The ball's limiting action locks the position between the fluid pipeline body and the connector body 1, greatly improving the connection efficiency between the fluid pipeline body 3 and the connector body 1. During disassembly, the auxiliary fixing sleeve 2... Manually slide towards the center until the spring structure 503 is compressed to its limit. At the same time, the limiting groove 504 of the auxiliary fixing sleeve 2 slides to the position of the ball. Then, directly pull the fluid pipeline body 3 outward from the inside of the connector body 1. The outer wall of the fluid pipeline body 3 will squeeze the metal ball 506 outward, so that the ball is inside the limiting groove 504 and the ball groove 505 until the fluid pipeline body 3 is completely pulled out. By utilizing the limiting effect of the spring structure 503 and the metal ball 506, a quick and stable connection and disassembly between the fluid pipeline and the connector is achieved, which improves the operating efficiency and connection reliability.
[0024] Example 1: The diameters of the upper and lower openings of the ball groove 505 are both smaller than the diameter of the metal ball 506 itself, so that the metal ball 506 can only move inside the ball groove 505 and will not fall out of the ball groove 505. A limiting groove 504 is provided on the inner end of the auxiliary fixing sleeve 2 to limit the metal ball 506. A first step 501 is provided on the inner side of the auxiliary fixing sleeve 2, and a second step 502 is provided on the outer surface of the connector body 1. A spring structure 503 is installed between the first step 501 and the second step 502. The auxiliary fixing sleeve 2 is slidably installed on the outer surface of the connector body 1 through the spring structure 503.
[0025] Example 2: The hook 405 is rotatably mounted on the outer surface of the connector body 1 via a rotating shaft 403. One end of the rotating shaft 403 is fixedly fitted with a handle 404 for easy manual rotation of the hook 405 and the rotating shaft 403. During the installation and disassembly of the fluid pipeline body 3, the hook 405 hooks onto the first locking rod 401 and the second locking rod 402 on both sides, thereby locking the position of the auxiliary fixing sleeve 2. Through the auxiliary fixing mechanism 4, when the fluid pipeline body 3 is inserted into the connector body 1, the auxiliary fixing sleeve 2 is slid towards the center and then manually rotated. The handle 404, through the rotating shaft 403, drives the hook 405 to rotate, hooking the first locking rod 401 fixedly installed on one side of the auxiliary fixing sleeve 2 and the second locking rod 402 fixedly installed on the side surface of the connector body 1, preventing the auxiliary fixing sleeve 2 from being popped out by the spring structure 503, thus affecting the connection process of the fluid pipeline body 3. During disassembly, the auxiliary fixing mechanism 4 can also lock the auxiliary fixing sleeve 2 in this position to prevent the auxiliary fixing sleeve 2 from affecting the normal disassembly process of the fluid pipeline, ensuring the stability of the connection process, and achieving both stability and convenience in the connection and disassembly process.
[0026] In use, the fluid pipeline connection device achieves quick and stable connection and disassembly through the cooperation of the metal ball 506 and the slot 507. During the connection process, the auxiliary fixing sleeve 2 is first slid towards the center, so that the spring structure 503 is in a compressed state. Then, the fluid pipeline body 3 is inserted into the interior of the connector body 1. During the insertion process, the outer wall of the fluid pipeline body 3 slowly presses the metal ball 506 inside the ball groove 505 outward through its inclined surface, so that the metal ball 506 is in the ball groove 505 and the limiting groove 504 on the inner side of the auxiliary fixing sleeve 2. When the slot 507 on the side surface of the fluid pipeline body 3 reaches directly below the ball, the restoring force of the spring structure 503 causes the auxiliary fixing sleeve 2 to slide outward. At the same time, the inner wall of the auxiliary fixing sleeve 2 presses the ball towards the slot 507, so that the ball is in the slot 507 and the ball groove. Inside 505, the position between the fluid pipeline and the connector is locked by the limiting action of the ball, thus achieving a stable connection. During disassembly, the operator manually slides the auxiliary fixing sleeve 2 toward the center until the spring structure 503 is squeezed to its limit. At the same time, after the limiting groove 504 of the auxiliary fixing sleeve 2 slides to the position of the ball, the fluid pipeline body 3 is directly pulled out from the inside of the connector body 1. During the pulling process, the outer wall of the fluid pipeline body 3 will squeeze the metal ball 506 toward the outside, so that the ball is inside the limiting groove 504 and the ball groove 505 until the fluid pipeline body 3 is completely pulled out. Throughout the process, the auxiliary fixing mechanism 4 hooks the first locking rod 401 and the second locking rod 402 through the hook 405 to prevent the auxiliary fixing sleeve 2 from being popped out by the spring during the operation, thereby ensuring the stability and convenience of the connection and disassembly process.
[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.
Claims
1. A connection for fluid lines, characterized in that The system includes a connector body (1), an auxiliary fixing sleeve (2), a fluid pipeline body (3), an auxiliary fixing mechanism (4), and a connecting mechanism (5). The connecting mechanism (5) includes a metal ball (506) and a slot (507). The slot (507) is opened on the side surface of the fluid pipeline body (3). The surface of the connector body (1) is provided with a ball groove (505). The ball is movably installed inside the ball groove (505). The auxiliary fixing sleeve (2) is slidably installed at both ends of the outer surface of the connector body (1). The auxiliary fixing mechanism (4) includes a first locking rod (401), a second locking rod (402), and a hook (405). The hook (405) is rotatably installed on the side surface of the connector body (1). The first locking rod (401) is fixedly installed on the inner surface of the auxiliary fixing sleeve (2), and the second locking rod (402) is fixedly installed on the side surface of the connector body (1).
2. A connector for a fluid pipeline according to claim 1, characterized in that, The diameters of the upper and lower openings of the ball groove (505) are both smaller than the diameter of the metal ball (506) itself, so that the metal ball (506) can only move inside the ball groove (505) and will not fall out of the ball groove (505).
3. A connector for a fluid pipeline according to claim 1, characterized in that, The auxiliary fixing sleeve (2) has a limiting groove (504) on one end of its inner side to limit the metal ball (506).
4. A fluid line connector according to claim 1, wherein The inner side of the auxiliary fixing sleeve (2) is provided with a first step (501), and the outer surface of the connector body (1) is provided with a second step (502).
5. A connector for a fluid pipeline according to claim 4, characterized in that, A spring structure (503) is installed between the first step (501) and the second step (502), and the auxiliary fixing sleeve (2) is slidably installed on the outer surface of the connector body (1) through the spring structure (503).
6. A fluid line connector according to claim 1, wherein The hook (405) is rotatably mounted on the outer surface of the connector body (1) via a rotating shaft (403).
7. A fluid line connector according to claim 6, wherein One end of the rotating shaft (403) is fixedly equipped with a handle (404) that facilitates manual rotation of the hook (405) and the rotating shaft (403).
8. A fluid line connector according to claim 1, wherein, During the installation and disassembly of the fluid pipeline body (3), the position of the auxiliary fixing sleeve (2) is locked by hooking the first locking rod (401) and the second locking rod (402) on both sides with the hook (405).