Joint connection structure and quick coupling joint

Abstract

The application provides a joint connecting structure and a quick plug, the joint connecting structure comprises a joint body and a clamping ring, the outer side of the joint body is provided with a clamping part; a clamping groove corresponding to the position of the clamping part is formed on the clamping ring, one side of the clamping groove extends to the inner side of the clamping groove to form an extension part, and the extension part is an elastic member used for clamping the clamping part. The application realizes the optimization of the connecting structure through the elastic clamping of the extension part and the clamping part. In the process of equipment operation, the dynamic load generated by vibration or impact is absorbed through the elastic deformation of the extension part, so that stress concentration and fracture are avoided. Meanwhile, the joint body has a larger radial displacement space, and the dynamic adaptability of the connecting structure is further improved.

Description

Technical Field

[0001] This application relates to the field of connector technology, and in particular to a connector connection structure and a quick-connect connector. Background Technology

[0002] In industrial production, quick-connect couplings are widely used in hydraulic pipelines, pneumatic systems, mechanical drive shafts, aerospace equipment, and automobile manufacturing. For example, in automobile manufacturing, the connection between the engine and the transmission system needs to withstand high-frequency vibration and dynamic loads; in chemical equipment, pipeline connections need to be exposed to high-temperature and high-pressure environments for extended periods and may vibrate due to fluid impact; in the aerospace field, the fuel delivery system or hydraulic control system of aircraft needs to maintain connection stability under extreme environments.

[0003] In existing technologies, quick-connect couplings typically employ a rectangular groove on the side of the locking ring and a snap fastener on the coupling body. The locking ring and coupling body are fixed by inserting the snap fastener into the rectangular groove. This approach utilizes the rigid structure of the rectangular groove to restrict the displacement of the snap fastener, thereby maintaining connection stability. However, the rigid design of the rectangular groove has significant drawbacks: when the coupling body is subjected to external vibration or impact, the rigid contact between the snap fastener and the rectangular groove can lead to stress concentration, easily causing crack propagation or breakage. In practical applications, vibration, impact, or dynamic loads generated during equipment operation may cause relative displacement between the coupling body and the locking ring, thus applying periodic stress to the rectangular groove. Due to the high rigidity and lack of elastic deformation space of the rectangular groove, it is prone to plastic deformation or even breakage under long-term use, leading to connection failure. This not only affects the normal operation of the equipment but may also cause safety accidents. Utility Model Content

[0004] To address the aforementioned issues, this application provides a connector connection structure and a quick-connect connector to increase the deformation space between the connector body and the locking ring, preventing stress concentration from damaging the locking ring and ensuring normal equipment operation.

[0005] A first aspect of this application provides a connector connection structure, including:

[0006] The connector body has a snap-fit ​​portion on its outer side;

[0007] A locking ring is provided, wherein a locking groove is provided on the locking ring corresponding to the position of the locking part, and one side of the locking groove extends inward to form an extension, the extension being an elastic element for engaging with the locking part.

[0008] In one possible implementation, the extension has a fixed end and a free end, the free end abutting against the outer wall of the connector body, and the fixed end having a movable gap with the outer wall of the connector body.

[0009] In one possible implementation, the free end of the extension protrudes toward one side of the connector body to form a protrusion, the protrusion having a planar or curved structure and abutting against the outer wall of the connector body.

[0010] In one possible implementation, a pressure sensor and a wireless transmission module are disposed in the protrusion, and the pressure sensor is electrically connected to the wireless transmission module.

[0011] In one possible implementation, the outer surface of the protrusion is coated with a wear-resistant coating.

[0012] In one possible implementation, the snap-fit ​​portion protrudes from the outer side wall of the connector body, and the connection between the snap-fit ​​portion and the outer side wall of the connector body is an arc-shaped structure.

[0013] And / or, the slot is provided with a guide groove on the side near the connector body, the snap-fit ​​part matches the size of the guide groove, and the side of the snap-fit ​​part facing the guide groove is set as an inclined surface.

[0014] In one possible implementation, a metal spring is disposed inside the extension, and the metal spring is disposed along the length direction of the extension.

[0015] In one possible implementation, the extension includes a wavy segment and a straight segment, the wavy segment being close to the root of the extension.

[0016] In one possible implementation, the width of the sidewall of the slot where the extension is located is 5-10 mm.

[0017] A second aspect of this application provides a quick-connect connector, including the connector connection structure provided in the first aspect.

[0018] The connector connection structure and quick-connect connector provided in this application optimize the connection structure through the elastic snap-fit ​​between the extension and the snap-fit ​​portion. An elastic extension is provided inside the slot of the locking ring. When the connector body is inserted, the snap-fit ​​portion contacts the extension, and the extension opens outward, providing an insertion path for the snap-fit ​​portion. As the snap-fit ​​portion is fully inserted into the slot, the extension returns to its original shape, and its root forms a clamping force on the connector body, locking the snap-fit ​​portion in the connection position. During equipment operation, dynamic loads generated by vibration or impact are absorbed by the elastic deformation of the extension, preventing stress concentration and subsequent breakage. Simultaneously, the connector body has a larger radial displacement space, further improving the dynamic adaptability of the connection structure. Attached Figure Description

[0019] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0020] Figure 1 This is a schematic diagram of a traditional locking ring.

[0021] Figure 2 This is a front view of the connector connection structure provided in this application;

[0022] Figure 3 A cross-sectional schematic diagram of the connector connection structure and quick-connect connector provided in this application;

[0023] Figure 4 for Figure 3 An enlarged schematic diagram of part A in the middle;

[0024] Figure 5 This is a schematic diagram of the extension portion in a connector connection structure provided in an embodiment of this application.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Connector body; 11. Snap-fit ​​part; 2. Locking ring; 21. Locking groove; 22. Extension part; 221. Wavy section; 222. Straight section; 23. Protrusion part; 24. Guide groove; 3. Locking buckle; 4. First sealing ring; 5. Isolation ring; 6. Second sealing ring; 7. Traditional locking ring; 71. Rectangular groove.

[0027] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0028] First, those skilled in the art should understand that these embodiments are merely for explaining the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0029] Secondly, it should be noted that, in the description of the embodiments of this application, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0030] In industrial production, quick-connect couplings are widely used in hydraulic pipelines, pneumatic systems, mechanical drive shafts, aerospace equipment, and automobile manufacturing. For example, in automobile manufacturing, the connection between the engine and the transmission system needs to withstand high-frequency vibration and dynamic loads; in chemical equipment, pipeline connections need to be exposed to high-temperature and high-pressure environments for extended periods and may vibrate due to fluid impact; in the aerospace field, the fuel delivery system or hydraulic control system of aircraft needs to maintain connection stability under extreme environments.

[0031] See related technologies. Figure 1 The connection between the traditional locking ring 7 and the connector body typically employs the following structure: a rectangular groove 71 is formed on the side of the traditional locking ring 7, and a buckle is installed on the connector body. Fixing is achieved by inserting the buckle into the rectangular groove 71. The core principle of this solution is to utilize the rigid structure of the rectangular groove 71 to restrict the displacement of the buckle, thereby maintaining the stability of the connection. However, the rigid design of the rectangular groove 71 has significant drawbacks: when the connector body is subjected to external vibration or impact, the rigid contact between the buckle and the rectangular groove 71 leads to stress concentration, making the rectangular groove 71 prone to crack propagation or breakage. Furthermore, the rectangular groove 71 requires high machining precision; even slight deviations in the groove's size or shape may further exacerbate the risk of connection failure. Existing technologies do not consider the dynamic adaptability of the connection structure, resulting in a significant decrease in connection reliability under complex operating conditions (such as high-frequency vibration and thermal expansion and contraction caused by temperature changes). This deficiency limits the application of existing technologies in demanding industrial scenarios and urgently requires solutions through structural innovation.

[0032] To address the aforementioned issues, this application provides a connector connection structure and a quick-connect connector. The connector connection structure includes a connector body and a locking ring. A locking portion is provided on the outer side of the connector body. A locking groove corresponding to the position of the locking portion is provided on the locking ring. One side of the locking groove extends inward to form an extension portion, which is an elastic element used to engage with the locking portion.

[0033] The connector connection structure and quick-connect connector provided in this application optimize the connection structure through the elastic snap-fit ​​between the extension and the snap-fit ​​portion. An elastic extension is provided inside the slot of the locking ring. When the connector body is inserted, the snap-fit ​​portion contacts the extension, and the extension opens outward, providing an insertion path for the snap-fit ​​portion. As the snap-fit ​​portion is fully inserted into the slot, the extension returns to its original shape, and its root forms a clamping force on the connector body, locking the snap-fit ​​portion in the connection position. During equipment operation, dynamic loads generated by vibration or impact are absorbed by the elastic deformation of the extension, preventing stress concentration and subsequent breakage. Simultaneously, the connector body has a larger radial displacement space, further improving the dynamic adaptability of the connection structure.

[0034] To make the above-mentioned objectives, features, and advantages of the embodiments of this application more apparent and understandable, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0035] Please refer to Figures 2-5 The first aspect of this application provides a connector connection structure, including a connector body 1 and a locking ring 2. A locking part 11 is provided on the outer side of the connector body 1. A locking groove 21 corresponding to the position of the locking part 11 is provided on the locking ring 2. One side of the locking groove 21 extends into the inner side of the locking groove 21 to form an extension 22. The extension 22 is an elastic member used to lock with the locking part 11.

[0036] By providing an elastic extension 22 inside the slot 21 of the locking ring 2, when the connector body 1 is inserted into the locking ring 2, the locking part 11 contacts the extension 22, squeezing the extension 22 and causing it to open outward. As the locking part 11 is fully inserted into the slot 21, the extension 22 returns to its original shape, and its root forms a clamping force on the connector body 1, locking the locking part 11 in the connection position. During equipment operation, the dynamic load generated by vibration or impact is absorbed by the elastic deformation of the extension 22, avoiding stress concentration that could cause breakage at the slot 21. This ensures the connection structure remains stable under dynamic loads, significantly extending its service life and preventing equipment downtime or safety accidents due to localized failures. Simultaneously, the connector body 1 has a larger radial displacement space, further enhancing the dynamic adaptability of the connection structure.

[0037] In some embodiments of this application, see Figure 2 and Figure 3 The extension 22 has a fixed end (i.e., the root of the extension 22) and a free end. The free end abuts against the outer wall of the connector body 1, and there is a movable gap between the fixed end and the outer wall of the connector body 1.

[0038] By providing a movable gap between the fixed end of the extension 22 and the outer side wall of the connector body 1, the radial deformation space of the connector body 1 within the locking ring 2 can be increased. For example, the width of the movable gap can be set to 2-5mm, so that the connector body 1 has a radial deformation space of 2-5mm. Furthermore, since the locking part 11 and the extension 22 are elastically locked together, the connector body 1 will not come out of the locking groove 21, thereby further improving the dynamic adaptability of the connection structure.

[0039] In some embodiments of this application, see Figure 2The fixed end of the extension 22 is located on the side of the slot 21 near the connector body 1, and the free end is located on the side away from the connector body 1. In some other embodiments of this application, the fixed end of the extension 22 may also be located on the side of the slot 21 away from the connector body 1, and the free end is located on the side facing the connector body 1. Accordingly, the shape of the free end is adapted to restrict the connector body 1 from disengaging from the locking ring 2.

[0040] In some embodiments of this application, see Figures 3-5 The free end of the extension 22 protrudes towards the connector body 1 to form a protrusion 23. The protrusion 23 has a planar structure and abuts against the outer wall of the connector body 1.

[0041] By providing a protrusion 23 at the free end of the extension 22 and making the protrusion 23 a planar structure, the contact area between the free end and the connector body 1 can be increased. During equipment operation, this reduces wear on the extension 22 caused by vibration of the connector body 1 or relative movement between the connector and the locking ring 2, thereby extending its service life. In some other embodiments of this application, the side of the protrusion 23 facing the connector body 1 can also be configured as a curved structure, matching the shape of the sidewall of the connector body 1.

[0042] A pressure sensor and a wireless transmission module are provided in the protrusion 23 of this application, and the pressure sensor is electrically connected to the wireless transmission module.

[0043] Understandably, the pressure sensor and wireless transmission module can be connected via circuitry or wirelessly. Due to vibrations during equipment operation, the locking ring 2 may experience fatigue damage after prolonged use. The pressure sensor can monitor the pressure on the protrusion 23 in real time, reflecting the clamping force of the extension 22 on the connector body 1 and the fatigue level of the extension 22. When the pressure is lower than a set value, it indicates a decrease in the clamping force of the extension 22, posing a risk of fatigue damage. When the pressure sensor detects a pressure value lower than the set value, it processes the signal through circuitry and converts it into an electrical signal, which is then transmitted to the control system (not shown in the figure) via the wireless transmission module. The control system can determine the fatigue level or potential failure risk of the extension 22 based on the pressure value and output a corresponding warning signal to remind personnel to perform maintenance or replacement. This application reduces sudden failures through real-time monitoring and preventative maintenance, while improving the maintenance efficiency and safety of the connection structure.

[0044] In some embodiments of this application, the outer surface of the protrusion 23 is coated with a wear-resistant coating. By providing a wear-resistant coating on the outer side of the protrusion 23, the direct contact between the protrusion 23 and the connector body 1 can be reduced, the wear rate can be lowered, and the service life of the connection structure can be extended. The wear-resistant coating can be made of PTFE (polytetrafluoroethylene), PEEK (polyether ether ketone), polyurethane, or other materials, which are not limited in this application.

[0045] In some embodiments of this application, see Figure 4 The snap-fit ​​part 11 protrudes from the outer side wall of the connector body 1, and the connection between the snap-fit ​​part 11 and the outer side wall of the connector body 1 is an arc-shaped structure.

[0046] By setting the connection between the snap-fit ​​part 11 and the outer side wall of the connector body 1 as an arc-shaped structure, when the snap-fit ​​ring 2 and the connector body 1 move axially relative to each other, the free end of the extension part 22 can move along the surface of the arc-shaped structure under the guidance of the arc-shaped structure, thereby buffering the extension part 22 and the snap-fit ​​part 11, reducing the impact force between the extension part 22 and the snap-fit ​​part 11, and further improving the safety of the structure.

[0047] In some embodiments of this application, see Figure 3 The slot 21 is provided with a guide groove 24 on the side near the connector body 1. The size of the snap-fit ​​part 11 matches that of the guide groove 24, and the side of the snap-fit ​​part 11 facing the guide groove 24 is set as an inclined surface.

[0048] When the connector body 1 is inserted into the locking ring 2, the locking part 11 is inserted into the guide groove 24. The guide groove 24 limits the locking part 11 to prevent it from rotating, so that the locking part 11 can be correctly locked with the extension part 22. At the same time, the side of the locking part 11 facing the guide groove 24 is set as an inclined surface. Through the guiding effect of the inclined surface, it is easy to insert the locking part 11 into the guide groove 24, reducing the difficulty of assembly.

[0049] In some embodiments of this application, a metal spring (not shown in the figure) is disposed inside the extension 22. Specifically, the metal spring is disposed along the length direction of the extension 22 and extends into the side wall of the slot 21. The metal spring has a higher elastic modulus, which can reduce the risk of plastic deformation. By providing the metal spring, the durability and fatigue resistance of the connection structure under complex working conditions can be improved, and the service life of the extension 22 can be extended. In addition, by using a metal spring with a high elastic modulus, the extension 22 can more effectively absorb vibration energy under dynamic loads, further reducing the risk of stress concentration.

[0050] In some embodiments of this application, the metal spring is made of nickel-titanium shape memory alloy. In other embodiments of this application, the metal spring may also be made of high-carbon chromium spring steel or other materials. This application does not limit the application.

[0051] In some embodiments of this application, see Figure 5 The extension 22 includes a wave segment 221 and a straight segment 222, with the wave segment 221 located near the root of the extension 22.

[0052] The wave segment 221 has a periodic concave-convex structure (such as a sine wave or a sawtooth shape), and its stiffness is lower than that of the straight segment 222. This can reduce the resistance when the snap-fit ​​part 11 is inserted, and at the same time, it can change the stress distribution of the extension part 22, reduce the stress concentration at the root position of the extension part 22, improve the dynamic adaptability of the extension part 22, and further extend the service life of the connection structure.

[0053] In some embodiments of this application, the width of the side wall of the slot 21 on the side where the extension 22 is provided is 5-10 mm.

[0054] In the prior art, the width of the rectangular groove 71 facing the connector body 1 is about 3mm, which has low strength. By setting the width of the side wall of the slot 21 with the extension 22 to 5-10mm, the width of the side wall is increased compared with the original structure, which improves the strength of the side wall of the slot 21 and further extends the service life of the connection structure. Preferably, the side wall width is 8mm.

[0055] A second aspect of this application also provides a quick-connect connector, including the connector connection structure provided in the first aspect.

[0056] Specifically, the quick-connect connector also includes a locking buckle 3, a first sealing ring 4, an isolation ring 5, and a second sealing ring 6. The locking ring 2 has an opening for the locking buckle 3 to be inserted, and the locking buckle 3 is used to connect the mating component, fixing the mating component to the connector body 1. The first sealing ring 4, the isolation ring 5, and the second sealing ring 6 are sequentially disposed on the inner side of the connector body 1 to seal the gap between the mating component and the connector body 1.

[0057] In some embodiments of this application, the quick-connect connector is a straight-through structure. It is understood that the quick-connect connector can also adopt an elbow structure, a tee structure, etc., and this application does not limit it.

[0058] Given that the quick-connect connector in this embodiment includes the connector connection structure described in any of the above embodiments, the structure and beneficial effects of the quick-connect connector including the connector connection structure will not be described in detail here.

[0059] The various embodiments or implementation methods described in this specification are presented in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0060] It should be noted that the terms "one embodiment," "embodiment," "exemplary embodiment," "some embodiments," etc., mentioned in the specification indicate that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Moreover, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not, is within the knowledge scope of those skilled in the art.

[0061] Finally, it should be noted that other embodiments of this application will readily conceive of by those skilled in the art upon consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and alterations may be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A connector connection structure, characterized in that, include: The connector body has a snap-fit ​​portion on its outer side; A locking ring is provided, wherein a locking groove is provided on the locking ring corresponding to the position of the locking part, and one side of the locking groove extends inward to form an extension, the extension being an elastic element for engaging with the locking part.

2. The connector connection structure according to claim 1, characterized in that, The extension has a fixed end and a free end. The free end abuts against the outer wall of the connector body, and the fixed end has a movable gap with the outer wall of the connector body.

3. The connector connection structure according to claim 2, characterized in that, The free end of the extension protrudes toward one side of the connector body to form a protrusion. The protrusion is a planar structure or a curved structure and abuts against the outer wall of the connector body.

4. The connector connection structure according to claim 3, characterized in that, A pressure sensor and a wireless transmission module are provided in the protrusion, and the pressure sensor is electrically connected to the wireless transmission module.

5. The connector connection structure according to claim 3, characterized in that, The outer surface of the protrusion is coated with a wear-resistant coating.

6. The connector connection structure according to claim 1, characterized in that, The snap-fit ​​portion protrudes from the outer side wall of the connector body, and the connection between the snap-fit ​​portion and the outer side wall of the connector body is an arc-shaped structure. And / or, the slot is provided with a guide groove on the side near the connector body, the snap-fit ​​part matches the size of the guide groove, and the side of the snap-fit ​​part facing the guide groove is set as an inclined surface.

7. The connector connection structure according to claim 1, characterized in that, The extension is provided with a metal spring, and the metal spring is arranged along the length direction of the extension.

8. The connector connection structure according to claim 1, characterized in that, The extension includes a wavy segment and a straight segment, with the wavy segment located near the root of the extension.

9. The connector connection structure according to claim 1, characterized in that, The width of the side wall of the slot where the extension is located is 5-10 mm.

10. A quick-connect connector, characterized in that, Includes the connector connection structure as described in any one of claims 1-9.

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