Self-locking stainless steel quick-connect pipe fitting

Abstract

The utility model discloses a self -locking type stainless steel quick -connect pipe fitting belongs to self -locking type connecting pipe fitting field, and the inner end of self -locking type pipe is provided with sealed embedding groove, and the sealed embedding groove is located at the orifice of butt joint hole, and the sealed embedding groove is equipped with inner locking mechanism, and the inner locking mechanism includes embedding ring, elastic locking piece, and the embedding ring is embedded in the sealed embedding groove, and the inner end of embedding ring is equipped with sealing ring, and the lateral wall of embedding ring is provided with a plurality of mounting holes, and the elastic locking piece is installed in each mounting hole. Through the design of self -locking joint, self -locking pipe and fastening nut thread connection, user can complete pipe fitting assembly and disassembly quickly, improve work efficiency. The elastic locking piece of inner locking mechanism is connected with butt joint limit, prevents pipe fitting from falling off or loosening. The pipe fitting structure design is reasonable, and the connection is close and stable, can bear greater pressure and tension. The elastic resistance piece and V -shaped elastic piece design make pipe fitting have buffering and shock resistance when receiving external force, prolong the service life of equipment.

Description

Technical Field

[0001] This utility model relates to the field of self-locking connecting pipe fittings, and in particular to a self-locking stainless steel quick connecting pipe fitting. Background Technology

[0002] Self-locking stainless steel pipe fittings specifically refer to stainless steel pipe fittings that employ automatic locking technology. This technology boasts a simple yet highly efficient working principle. The process involves creating a groove at the pipe joint using a manual or electric grooving device, followed by inserting the pipe into the fitting. A "click" sound indicates that the locking mechanism has successfully engaged in the groove. Pulling back the pipe then resets the O-ring seal, completing the connection. This connection technology requires no specialized or complex tools, making installation quick and easy, significantly improving construction efficiency.

[0003] Automatic locking technology was initially applied to small-diameter plastic hose connections, but with technological advancements, it has now been extended to stainless steel pipe connections, demonstrating its broad application potential. Due to the ease of installation, this technology effectively reduces labor and time costs, giving self-locking stainless steel pipe fittings a significant advantage in cost control.

[0004] In practical applications, self-locking stainless steel pipe fittings must withstand multiple factors, including internal fluid pressure, thermal expansion and contraction due to temperature changes, and external environmental vibrations. If the locking mechanism is not stable enough, it is prone to displacement under the influence of these factors, thereby affecting the stability and safety of the pipeline system.

[0005] The clamping pressure has a decisive impact on the sealing performance and durability of pipe fittings. Insufficient clamping pressure may lead to leaks at the connection, or even damage due to uneven stress during long-term use. Furthermore, insufficient clamping pressure may also weaken the tensile and vibration resistance of the pipe fittings, thereby reducing the reliability of the entire piping system. Utility Model Content

[0006] The main objective of this invention is to provide a self-locking stainless steel quick-connect pipe fitting, which can effectively solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A self-locking stainless steel quick-connect pipe fitting includes a self-locking connector, a threaded portion, a self-locking connecting pipe, a butt joint, and a mating hole. The butt joint is located at one end of the self-locking connector, and a first threaded portion is installed on the self-locking connector at this end. The mating hole is located at the inner end of the self-locking connecting pipe, and the butt joint is inserted into the mating hole. The self-locking connecting pipe is provided with a second threaded portion, and a fastening nut is fitted on the first threaded portion and the second threaded portion. The inner end of the self-locking connector is provided with a sealing groove, which is located at the opening of the docking hole, and an internal locking mechanism is provided in the sealing groove. The internal locking mechanism includes an embedded ring and an elastic locking element. The embedded ring is embedded in the sealing groove, and the inner end of the embedded ring is provided with a sealing ring. The side wall of the embedded ring has multiple mounting holes, and an elastic locking element is installed in each mounting hole. The outer end of the embedded ring is provided with a fixing ring, and the side wall notch of the fixing ring is provided with an elastic abutment. Rotating the fastening nut places it at the self-locking pipe or self-locking connector. The fastening nut squeezes the elastic abutment and drives the elastic locking element to be limited and connected to the connector.

[0008] A further alternative is that the connector and the self-locking connector are designed as a single unit, the connector is adapted to the mating hole and is locked inside the mating hole, and the connection between the connector and the self-locking connector is provided with multiple sealing rings. A further alternative is that the first threaded portion and the second threaded portion are adapted to each other, and the fastening nut is threaded along the first threaded portion and the second threaded portion, and its position is adjusted. In a further alternative, multiple elastic locking elements are arranged in a ring on the insert ring. Each elastic locking element includes an elastic insert head and a V-shaped elastic plate. The elastic insert head is located at one end of the V-shaped elastic plate. The elastic insert head passes through the mounting hole and is inserted into the connector. The V-shaped elastic plate is located at the mounting hole. In a further alternative, multiple elastic abutment pieces are distributed in a ring on the fixing ring. The cross-section of the elastic abutment piece is designed in an "L" shape. The elastic abutment piece is directly opposite the V-shaped elastic piece. The elastic abutment piece and the fixing ring are designed as an integral part. The upper edge of the elastic abutment piece is designed in an arc shape. In a further alternative, the sealing ring is bonded to the insert ring with an adhesive. The sealing ring is positioned at the joint, the mating hole, and the insert ring. The elastic abutment is located at the joint of the self-locking joint and the self-locking pipe joint, and protrudes from the joint. The fastening nut presses against the protruding elastic abutment at the joint.

[0009] Compared with the prior art, the present invention has the following beneficial effects: The design of self-locking joints and self-locking pipes, along with the threaded connection of the fastening nuts, allows users to quickly assemble and disassemble pipe fittings, improving work efficiency. The elastic locking element in the internal locking mechanism forms a limiting connection with the butt joint, effectively preventing pipe fittings from falling off or loosening. Simultaneously, the design of multi-layer sealing rings and sealing collars further enhances the sealing performance at the connection, avoiding leakage problems.

[0010] The matching design of the first and second threaded sections, along with the adjustable position of the fastening nut, allows users to precisely control the angle and depth of the connection, ensuring its stability and reliability. The fitting features a rational structural design, with tight and stable connections between components, enabling it to withstand significant pressure and tension. Furthermore, the design of the elastic clamping plate and V-shaped elastic plate provides cushioning and shock absorption when subjected to external forces, extending the equipment's service life. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a side view of the overall structure of this utility model; Figure 3 This is an exploded view of the overall structure of this utility model; Figure 4 This is an exploded view of the insert ring, elastic locking element, fixing ring, and elastic abutment piece of this utility model.

[0012] In the diagram: 1. Self-locking connector; 2. First threaded section; 3. Fastening nut; 4. Butt joint; 5. Self-locking connecting pipe; 6. Second threaded section; 7. Butt hole; 8. Sealing groove; 9. Insert ring; 10. Sealing ring; 11. Mounting hole; 12. Elastic locking element; 13. Retaining ring; 14. Elastic abutment plate. Detailed Implementation

[0013] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0014] like Figure 1 - Figure 4 As shown, a self-locking stainless steel quick-connect pipe fitting achieves convenience and efficiency in connection operations. The fitting consists of a self-locking connector 1, a threaded portion, a self-locking connecting pipe 5, a mating connector 4, and a mating hole 7. The mating connector 4 is located at one end of the self-locking connector 1, and a first threaded portion 2 is installed at that end. The mating hole 7 is located at the inner end of the self-locking connecting pipe 5, allowing the mating connector 4 to be inserted. The inner end of the self-locking connecting pipe 5 has a second threaded portion 6, and a fastening nut 3 is fitted onto both the first threaded portion 2 and the second threaded portion 6. The inner end of the self-locking connecting pipe 5 has a sealing groove 8, within which an internal locking mechanism is provided to ensure the sealing and stability of the connection. The internal locking mechanism consists of a retaining ring 9 and an elastic locking element 12. The retaining ring 9 has a sealing ring 10 embedded within it, and multiple mounting holes 11 on its side wall, each hole housing an elastic locking element 12. The outer end of the retaining ring 9 has a fixing ring 13, and an elastic abutment 14 is provided at a notch on its side wall.

[0015] By rotating the fastening nut 3, it can be positioned at the self-locking connecting pipe 5 and the self-locking connector 1. The fastening nut 3 compresses the elastic retaining plate 14 and drives the elastic locking element 12 to be limited and connected to the mating connector 4, thereby ensuring the firmness and reliability of the connection. The mating connector 4 and the self-locking connector 1 are integrated into a single design, adapted to the mating hole 7, and the mating connector 4 snaps into the mating hole 7. The connection is provided with multiple sealing rings to enhance the sealing performance. The first threaded part 2 and the second threaded part 6 are adapted to each other. The fastening nut 3 is connected along the thread and its position is adjusted to ensure the accuracy and stability of the connection.

[0016] The resilient locking element 12 is annularly distributed on the insert ring 9, including a resilient insert head and a V-shaped resilient plate. The resilient insert head passes through the mounting hole 11 and is inserted into the connector 4, while the V-shaped resilient plate is located at the mounting hole 11. The resilient abutment plate 14 is annularly distributed on the fixing ring 13, with an "L"-shaped cross-section, directly opposite the V-shaped resilient plate. The resilient abutment plate 14 is integrally designed with the fixing ring 13, and its upper edge is arc-shaped to accommodate the squeezing action of the fastening nut 3. The sealing ring 10 is fixed to the insert ring 9 with adhesive and is placed at the joint of the connector 4, the mating hole 7, and the insert ring 9 to ensure the sealing of the connection. The resilient abutment plate 14 is located at the joint of the self-locking connector 1 and the self-locking connecting pipe 5 and protrudes from the joint. The fastening nut 3 squeezes the resilient abutment plate 14 protruding from the joint, further enhancing the stability and sealing of the connection.

[0017] Install the connector 4 at one end of the self-locking connector 1, ensuring that the first threaded portion 2 is installed in the corresponding position on the self-locking connector 1. Open a mating hole 7 at the inner end of the self-locking connecting pipe 5, ensuring that the sealing groove 8 is located at the opening of the mating hole 7. Insert the insert ring 9 into the sealing groove 8, and install a sealing ring 10 at the inner end of the insert ring 9. Open mounting holes 11 on the side wall of the insert ring 9, and install a resilient locking element 12 in each mounting hole 11. Install a retaining ring 13 at the outer end of the insert ring 9, ensuring that the resilient abutment 14 is positioned at the notch on the side wall of the retaining ring 13. Connect the self-locking connecting pipe 5 to the self-locking connector 1, inserting the connector 4 into the mating hole 7. Rotate the fastening nut 3, positioning it at the self-locking connecting pipe 5 and the self-locking connector 1, and adjust its position to ensure the accuracy and stability of the connection. The fastening nut 3 will compress the resilient abutment 14, causing the resilient locking element 12 to be locked in place with the connector 4.

[0018] The assembled self-locking stainless steel quick-connect fittings should ensure that all components are tightly and securely connected. Connect the pipes or equipment to be connected to the self-locking connector 1 and the self-locking connecting pipe 5 respectively. Rotate the locking nut 3 to connect along the threads and gradually tighten it. During tightening, the locking nut 3 will compress the elastic retaining plate 14, thereby causing the elastic locking element 12 to connect tightly with the connector 4. Check that the connection is secure and well-sealed, judging the reliability of the connection by observing for leaks or loosening. During use, regularly check the condition of the connecting fittings to ensure they are in good working order. If loosening or leakage is found, tighten the locking nut 3 immediately or replace the damaged component. At the same time, keep the connecting fittings clean and dry to avoid corrosion or contamination.

[0019] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0020] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A self-locking stainless steel quick-connect pipe fitting, comprising a self-locking connector (1), a threaded portion and a self-locking connecting pipe (5), a butt joint (4) and a mating hole (7), wherein the butt joint (4) is located at one end of the self-locking connector (1), a first threaded portion (2) is installed on the self-locking connector (1) at this end, the mating hole (7) is located at the inner end of the self-locking connecting pipe (5), the butt joint (4) is inserted into the mating hole (7), a second threaded portion (6) is provided on the self-locking connecting pipe (5), and a fastening nut (3) is fitted on the first threaded portion (2) and the second threaded portion (6), characterized in that: The inner end of the self-locking connector (5) is provided with a sealing groove (8), which is located at the opening of the docking hole (7). The sealing groove (8) is provided with an internal locking mechanism. The internal locking mechanism includes a retaining ring (9) and an elastic locking element (12). The retaining ring (9) is embedded in the sealing groove (8), and the inner end of the retaining ring (9) is provided with a sealing ring (10). The side wall of the retaining ring (9) is provided with multiple mounting holes (11), and each mounting hole (11) is provided with an elastic locking element (12). The outer end of the retaining ring (9) is provided with a fixing ring (13), and the side wall notch of the fixing ring (13) is provided with an elastic abutment piece (14). The fastening nut (3) is rotated to place it at the self-locking pipe (5) and the self-locking connector (1). The fastening nut (3) squeezes the elastic abutment piece (14) and drives the elastic locking element (12) to be limited and connected to the connector (4).

2. The self-locking stainless steel quick-connect pipe fitting according to claim 1, characterized in that: The connector (4) and the self-locking connector (1) are designed as a single unit. The connector (4) is adapted to the mating hole (7) and the connector (4) is locked in the mating hole (7). The connection between the connector (4) and the self-locking connector (5) is provided with a multi-layer sealing ring.

3. The self-locking stainless steel quick-connect pipe fitting according to claim 2, characterized in that: The first threaded part (2) and the second threaded part (6) are adapted to each other, and the fastening nut (3) is threaded along the first threaded part (2) and the second threaded part (6) and the position is adjusted.

4. The self-locking stainless steel quick-connect pipe fitting according to claim 3, characterized in that: Multiple elastic locking elements (12) are distributed in a ring on the insert ring (9). The elastic locking element (12) includes an elastic insert and a V-shaped elastic piece. The elastic insert is located at one end of the V-shaped elastic piece. The elastic insert passes through the mounting hole (11) and is inserted into the connector (4). The V-shaped elastic piece is located at the mounting hole (11).

5. A self-locking stainless steel quick-connect pipe fitting according to claim 4, characterized in that: Multiple elastic abutment pieces (14) are arranged in a ring on the fixing ring (13). The cross-section of the elastic abutment piece (14) is designed in an "L" shape. The elastic abutment piece (14) is directly opposite the V-shaped elastic piece. The elastic abutment piece (14) and the fixing ring (13) are designed as a single unit, and the upper edge of the elastic abutment piece (14) is designed in an arc shape.

6. A self-locking stainless steel quick-connect pipe fitting according to claim 5, characterized in that: The sealing ring (10) is bonded and fixed to the insert ring (9) by adhesive. The sealing ring (10) is placed at the joint of the connector (4), the mating hole (7) and the insert ring (9). The elastic abutment (14) is located at the joint of the self-locking connector (1) and the self-locking pipe (5) and protrudes from the joint. The fastening nut (3) squeezes the elastic abutment (14) protruding from the joint.

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