Quick connector made of new aluminum alloy material

Abstract

This invention relates to a quick-connect coupling made of a novel aluminum alloy material, comprising a quick-connect straight connector and a nut seat. The quick-connect straight connector has bamboo-shaped reverse teeth for quick connection with nylon tubing. The nut seat is threaded onto a pipe fitting, and the quick-connect straight connector is mounted on the nut seat. The quick-connect straight connector is made of a novel aluminum alloy material, the composition of which, by mass percentage, is: silicon ≤0.50%, iron ≤0.30%, 1.0% ≤ copper ≤2.0%, manganese ≤0.20%, 1.0% ≤ magnesium ≤2.0%, chromium ≤0.10%, 5.5% ≤ zinc ≤7.0%, titanium ≤0.10%, with the balance being aluminum. The nut seat is also made of the same aluminum alloy material as the quick-connect straight connector. A self-locking device is provided between the quick-connect straight connector and the nut seat. This invention improves the quick-connect straight connector and nut seat by using a novel aluminum alloy, significantly reducing costs and weight to meet lightweight requirements, while also improving strength, hardness, and corrosion resistance, resulting in superior performance.

Description

Technical Field

[0001] This invention relates to quick-connect couplings made of a novel aluminum alloy material, belonging to the field of automotive parts technology. Background Technology

[0002] In automotive piping systems, compression fittings connected via compression nuts are commonly used in China. To prevent gas leaks, the fittings must be tightened with a wrench. However, in many automotive structures, the space available for these fittings is quite limited, making the use of wrenches and other tools difficult. Furthermore, while most fittings are currently made of brass, the rising price of brass has made the cost prohibitive. Additionally, brass is heavy, causing inconvenience in installation and use. Therefore, brass is no longer an ideal material for fittings. Summary of the Invention

[0003] The purpose of this invention is to address the shortcomings of existing technologies by providing a cost-effective quick-connect connector made of a novel aluminum alloy material.

[0004] To achieve the objective, the technical solution adopted by this invention is: A quick-connect connector made of a new type of aluminum alloy material includes a quick-connect straight connector and a nut seat. The quick-connect straight connector has bamboo-shaped reverse teeth for quick connection with nylon tubing. The nut seat is threaded onto a pipe fitting seat, and the quick-connect straight connector is mounted on the nut seat. The quick-connect straight connector is made of a new type of aluminum alloy material, and the composition of the aluminum alloy material by mass percentage is: silicon ≤ 0.50%, iron ≤ 0.30%, 1.0% ≤ copper ≤ 2.0%, manganese ≤ 0.20%, 1.0% ≤ magnesium ≤ 2.0%, chromium ≤ 0.10%, 5.5% ≤ zinc ≤ 7.0%, titanium ≤ 0.10%, with the balance being aluminum.

[0005] As a further optimization of the above technical solution: the nut seat is also made of the same aluminum alloy material as the quick-connect straight connector.

[0006] As a further optimization of the above technical solution: a self-locking fixing device is provided between the quick-connect straight connector and the nut seat. The self-locking fixing device includes a fixing ring, a positioning ring and a locking snap ring. The fixing ring is installed at the end of the nut seat, the positioning ring is located inside the fixing ring, the positioning ring has a snap ring positioning groove, the locking snap ring is installed in the snap ring positioning groove, and the locking snap ring locks one end of the quick-connect straight connector.

[0007] As a further optimization of the above technical solution: the outer wall of the positioning ring is provided with a convex ring, the inner wall of the fixing ring protrudes inward near the middle to form a retaining ring, the outer wall corresponding to the retaining ring forms a groove, the convex ring is located between the end of the nut seat and the retaining ring, there is a distance between the end of the nut seat and the retaining ring, and the locking spring is located below the convex ring.

[0008] As a further optimization of the above technical solution: the outer wall of the part of the quick-connect straight connector that is inserted into the nut seat is provided with an O-ring groove, a protrusion is provided in the middle of the O-ring groove, a dustproof ring is installed on the O-ring groove, an anti-rotation groove is provided on the dustproof ring, the protrusion in the O-ring groove is located in the anti-rotation groove, and after the quick-connect straight connector is assembled with the nut seat, the dustproof ring is located at the top of the inner wall of the nut seat.

[0009] As a further optimization of the above technical solution: when the quick-connect straight connector is assembled, it is pressed downward and drives the positioning ring downward until the convex ring contacts the buckle and is limited, so that the locking spring is located below the buckle. At this time, the locking spring has an unfolding space. The quick-connect straight connector continues to be pressed downward and unfolds the locking spring, so that the locking spring locks the quick-connect straight connector, and the quick-connect straight connector is fixed to the nut seat.

[0010] The downward pressing of the quick-connect straight connector compresses the dustproof ring. When the locking spring engages the quick-connect straight connector, the compressed dustproof ring rebounds, causing the quick-connect straight connector, the locking spring, and the positioning ring to move upwards, bringing the convex ring into contact with the end of the nut seat. At this time, the retaining ring is located outside the positioning groove of the retaining spring, and the side of the retaining ring limits the locking spring, preventing it from fully unfolding and completing the assembly between the quick-connect straight connector, the nut seat, and the self-locking fixing device.

[0011] As a further optimization of the above technical solution: the locking spring is approximately C-shaped, and the locking spring consists of two pointed hooks located at the opening, two positioning rings connected to the two pointed hooks respectively, and a connecting ring connecting the two positioning rings. The inner sides of the two positioning rings form arc-shaped protrusions towards the center.

[0012] The retaining ring positioning groove is also approximately C-shaped. The retaining ring positioning groove consists of a hook positioning ring, a hollow ring, and a limiting ring. The hook positioning ring has a positioning step, and the hook hooks onto the positioning step. The positioning ring of the locking retaining ring is located in the hollow ring. The arc-shaped protrusion of the positioning ring passes through the hollow ring and enters the interior of the positioning ring. The limiting ring is located on the inner side of the end of the hollow ring and cooperates with the connecting ring.

[0013] As a further optimization of the above technical solution: the end of the quick-connect straight connector that is inserted into the nut seat is provided with a locking groove, and the arc-shaped protrusion of the positioning ring that enters the positioning ring locks the groove wall of the locking groove.

[0014] As a further optimization of the above technical solution: the positioning ring is also provided with an auxiliary snap ring positioning groove, an auxiliary locking snap ring is installed in the auxiliary snap ring positioning groove, the auxiliary snap ring positioning groove has the same structure as the snap ring positioning groove, the auxiliary locking snap ring has the same shape as the locking snap ring, the arc-shaped protrusion of the auxiliary locking snap ring entering the positioning ring is located in the locking groove, and the auxiliary locking snap ring is located above the locking snap ring.

[0015] As a further optimization of the above technical solution: a fixing protrusion is formed at the end of the nut seat, a second guide slope is formed on the fixing protrusion, a fixing groove is formed between the upper surface of the fixing protrusion and the bottom of the threaded section of the nut seat, one end of the fixing ring is bent inward to form a fixing retaining ring, a third guide slope is formed on the fixing retaining ring, the fixing retaining ring presses against the fixing protrusion, causing the fixing protrusion to pass through the fixing retaining ring, the fixing retaining ring is engaged in the fixing groove, and the bottom surface of the fixing retaining ring contacts the upper surface of the fixing protrusion, so that the fixing ring is fixed at the end of the nut seat.

[0016] As a further optimization of the above technical solution: one end of the quick-connect straight connector is an insertion head, the insertion head is provided with a first guide slope, and the insertion head is inserted into the nut seat.

[0017] As a further optimization of the above technical solution: the outer wall of the quick-connect straight connector inserted into the nut seat is provided with a first sealing ring to seal the quick-connect straight connector and the nut seat, and the threaded section of the nut seat is equipped with a second sealing ring to seal the quick-connect straight connector and the pipe fitting.

[0018] As a further optimization of the above technical solution: the inner wall of the nut seat is provided with six first V-shaped grooves, and the inner port of the nut seat is provided with twelve second V-shaped grooves, with the first V-shaped grooves and the second V-shaped grooves being staggered one by one.

[0019] Compared with existing technologies, this invention improves the quick-connect straight connector and nut seat by making them from a new type of aluminum alloy, which greatly reduces costs and weight, meeting the requirements of lightweight design, and also improves strength, hardness, and corrosion resistance, resulting in superior performance. A self-locking fixing device between the quick-connect straight connector and the nut seat enables rapid assembly, meeting the installation requirements in small spaces. A locking spring locks the quick-connect straight connector, fixing it securely within the nut seat and preventing it from falling off. An auxiliary locking spring restricts the sliding space of the quick-connect straight connector within the nut seat, preventing the locking spring from falling off. After assembly, the expansion of the auxiliary locking spring is limited by the fixing protrusion, and the expansion of the locking spring is limited by the retaining ring. The auxiliary locking spring and the locking spring lose their expansion space, firmly locking the groove wall of the locking slot on the quick-connect straight connector, achieving self-locking. A leakage alarm function is implemented through the first V-shaped groove on the inner wall of the nut seat and the second V-shaped groove at the inner port of the nut seat, improving safety during use. Attached Figure Description

[0020] Figure 1 This is a cross-sectional structural diagram of the present invention.

[0021] Figure 2 yes Figure 1 A magnified structural diagram of point A in the middle.

[0022] Figure 3 This is a schematic diagram of the quick-connect straight connector in this invention.

[0023] Figure 4 This is a cross-sectional structural diagram of the nut seat in this invention.

[0024] Figure 5 This is a cross-sectional structural diagram of the fixing ring in this invention.

[0025] Figure 6 This is a schematic cross-sectional view of the positioning ring in this invention.

[0026] Figure 7 This is a cross-sectional view of the positioning ring from another angle in this invention.

[0027] Figure 8 This is a cross-sectional structural diagram of the locking snap ring in this invention.

[0028] Figure 9 This is a schematic diagram of the nut seat in this invention. Detailed Implementation

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. For example... Figure 1-9As shown, the quick-connect fitting, made of a new type of aluminum alloy, includes a quick-connect straight connector 1 and a nut seat 2. The quick-connect straight connector 1 has bamboo-shaped reverse teeth 11 for quick connection with a nylon tube 9. The nut seat 2 is threaded onto the pipe fitting seat 7. The quick-connect straight connector 1 is mounted on the nut seat 2. The quick-connect straight connector 1 is made of a new type of aluminum alloy, and the composition of the aluminum alloy by mass percentage is: silicon (Si) ≤0.50%, iron (Fe) ≤0.30%, 1.0% ≤ copper (Cu) ≤2.0%, manganese (Mn) ≤0.20%, 1.0% ≤ magnesium (Mg) ≤2.0%, chromium (Cr) ≤0.10%, 5.5% ≤ zinc (Zn) ≤7.0%, titanium (Ti) ≤0.10%, with the balance being aluminum (Al). The nut seat 2 is also made of the same new type of aluminum alloy as the quick-connect straight connector 1.

[0030] First, the cost of the novel aluminum alloy in this invention is far lower than the current price of brass, resulting in a significant cost reduction. Second, Table 1 shows the measured performance values ​​of the novel aluminum alloy material, and Table 2 compares the performance of the novel aluminum alloy material with that of brass in the prior art. As can be seen from Table 2, the strength and hardness of the novel aluminum alloy are superior to those of brass. At the same time, the novel aluminum alloy has a lower density and lighter weight, meeting the requirements for lightweighting. In addition, under the anti-corrosion treatment of anodizing, the corrosion resistance of the novel aluminum alloy is also superior to that of brass.

[0031]

[0032] Table 1. Actual Performance Measurements of the New Aluminum Alloy

[0033] Table 2 Material Performance Comparison Table In the above technical solution: a self-locking device is provided between the quick-connect straight connector 1 and the nut seat 2. The self-locking device includes a fixing ring 3, a positioning ring 6, and a locking snap ring 5. The fixing ring 3 is installed at the end of the nut seat 2. The positioning ring 6 is located inside the fixing ring 3, and a snap ring positioning groove 61 is formed on the positioning ring 6. The locking snap ring 5 is installed in the snap ring positioning groove 61 and locks one end of the quick-connect straight connector 1. The fixing ring 3 is made of polyoxymethylene, and the positioning ring 6 is also made of polyoxymethylene.

[0034] In the above technical solutions: such as Figure 2 , 5 As shown in Figure 6, the outer wall of the positioning ring 6 has a raised ring 63, and the inner wall of the fixing ring 3 protrudes inward near the middle to form a retaining ring 33. The raised ring 63 is located between the end of the nut seat 2 and the retaining ring 33, and there is a certain distance between the end of the nut seat 2 and the retaining ring 33, that is, after installation, the positioning ring 6 has a certain amount of room to move. The locking spring 5 is located below the raised ring 63.

[0035] In the above technical solutions: such as Figure 2 , 4 As shown, a fixing protrusion 25 is formed at the end of the nut seat 2, and a second guide slope 26 is formed on the fixing protrusion 25. A fixing groove 23 is formed between the upper surface of the fixing protrusion 25 and the bottom of the threaded section of the nut seat 2. Figure 2 , 5 As shown, one end of the retaining ring 3 is bent inward to form a retaining ring 32. A third guide slope 34 is formed on the retaining ring 32. The retaining ring 32 presses against the retaining protrusion 25, causing the protrusion 25 to pass through the retaining ring 32. The retaining ring 32 then engages with the retaining groove 23. The bottom surface of the retaining ring 32 contacts the upper surface of the protrusion 25, thus fixing the retaining ring 3 to the end of the nut seat 2. The second guide slope 26 and the third guide slope 34 cooperate to guide the protrusion 25 as it passes through the retaining ring 32.

[0036] In the above technical solutions: such as Figure 5 As shown, a groove 31 is formed on the outer wall corresponding to the retaining ring 33 on the retaining ring 3. To remove the retaining ring 3, simply use special pliers to clamp the groove 31 of the retaining ring 3 and pull it outward to remove the retaining ring 3. The removal is simple, quick and convenient.

[0037] In the above technical solutions: such as Figure 1 , 3 As shown, the outer wall of the part of the quick-connect straight connector 1 that inserts into the nut seat 2 has an O-ring groove 13. A protrusion 131 is formed in the middle of the O-ring groove 13. A dustproof ring 10 is installed on the O-ring groove 13 to prevent external dust from entering the quick-connect straight connector 1. The dustproof ring 10 has an anti-rotation groove 101, and the protrusion 131 within the O-ring groove 13 is located within the anti-rotation groove 101. After the quick-connect straight connector 1 and the nut seat 2 are assembled, the dustproof ring 10 is located at the top of the inner wall of the nut seat 2. The cooperation between the anti-rotation groove 101 and the protrusion 131 fixes the dustproof ring 10 within the O-ring groove 13, preventing rotation and improving the dustproof effect. The dustproof ring 10 is an O-ring, and its parting surface is set at a 45° angle to the plane containing the diameter of the dustproof ring 10, effectively providing a seal.

[0038] When the quick-connect straight connector 1 is assembled, it is pressed down and the positioning ring 6 is moved down until the convex ring 63 touches the retaining ring 33 and is limited, so that the locking spring 5 is located below the retaining ring 33. At this time, the locking spring 5 has room to unfold. The quick-connect straight connector 1 continues to be pressed down and the locking spring 5 unfolds, so that the locking spring 5 locks the quick-connect straight connector 1, and fixes the quick-connect straight connector 1 to the nut seat 2. The downward pressing of the quick-connect straight connector 1 compresses the dustproof ring 10. When the locking spring 5 locks the quick-connect straight connector 1, the compressed dustproof ring 10 begins to rebound, causing the quick-connect straight connector 1, the locking spring 5, and the positioning ring 6 to move upward, so that the convex ring 63 contacts the end of the nut seat 2. At this time, the retaining ring 33 is located outside the retaining spring positioning groove 61. The side of the retaining ring 33 limits the locking spring 5, so that the locking spring 5 loses its unfolding space and cannot be fully unfolded, thus completing the assembly between the quick-connect straight connector 1, the nut seat 2, and the self-locking fixing device, and realizing the self-locking of the quick-connect straight connector 1.

[0039] In the above technical solutions: such as Figure 8 As shown, the locking spring 5 is approximately C-shaped. It consists of two pointed hooks 51 located at the opening, two positioning rings 52 connected to the two pointed hooks 51 respectively, and a connecting ring 53 connecting the two positioning rings 52. The inner sides of the two positioning rings 52 form arc-shaped protrusions towards the center. Figure 7 As shown, the snap ring positioning groove 61 is also approximately C-shaped. It consists of a hook positioning ring 64, a hollow ring 65, and a limiting ring 66. The hook positioning ring 64 has a positioning step 67. The hook 51 of the locking snap ring 5 hooks onto the positioning step 67. The positioning ring 52 of the locking snap ring 5 is located within the hollow ring 65. The arc-shaped protrusion of the positioning ring 52 passes through the hollow ring 65 and enters the interior of the positioning ring 6. The limiting ring 66 is located on the inner side of the end of the hollow ring 65 and engages with the connecting ring 53 of the locking snap ring 5. The end of the quick-connect straight connector 1 inserted into the nut seat 2 has a locking groove 15, located above the insertion head 12. The arc-shaped protrusion of the positioning ring 52, inside the positioning ring 6, engages with the groove wall of the locking groove 15.

[0040] In the above technical solution: the positioning ring 6 also has an auxiliary snap ring positioning groove 62, and an auxiliary locking snap ring 4 is installed in the auxiliary snap ring positioning groove 62. The auxiliary snap ring positioning groove 62 has the same structure as the snap ring positioning groove 61, and the auxiliary locking snap ring 4 has the same shape as the locking snap ring 5. The arc-shaped protrusion of the auxiliary locking snap ring 4 entering the positioning ring 6 is located in the locking groove 15. The function of the auxiliary locking snap ring 4 is to limit the sliding range of the quick-connect straight connector 1 in the nut seat 2. The auxiliary locking snap ring 4 is located above the locking snap ring 5. After the quick-connect straight connector 1 is assembled, the fixing protrusion 25 of the nut seat 2 is located outside the auxiliary snap ring positioning groove 62, such as... Figure 2 As shown, the fixed protrusion 25 limits the auxiliary locking spring 4, so that the auxiliary locking spring 4 loses its unfolding space and cannot be fully unfolded, thus completing the locking.

[0041] In the above technical solutions: such as Figure 1 , 3As shown, one end of the quick-connect straight connector 1 is an insertion head 12, and a first guide slope 14 is formed on the insertion head 12. The insertion head 12 is inserted into the nut seat 2, and the first guide slope 14 guides the insertion process of the insertion head 12.

[0042] In the above technical solutions: such as Figure 4 , 9 As shown, the inner wall of the nut seat 2 has six first V-shaped grooves 21, and the inner port of the nut seat 2 has twelve second V-shaped grooves 22. The first V-shaped grooves 21 and the second V-shaped grooves 22 are staggered. If a leak occurs between the quick-connect fitting 1 and the nut seat 2, the leaked gas will escape through the six first V-shaped grooves 21 on the inner wall of the nut seat 2, and then be amplified by the twelve second V-shaped grooves 22 at the inner port of the nut seat 2 to produce an alarm sound.

[0043] In the above technical solution: the outer wall of the part of the quick-connect straight connector 1 that is inserted into the nut seat 2 is provided with a first sealing ring 8 to seal the quick-connect straight connector 1 and the nut seat 2, and the threaded section of the nut seat 2 is provided with a second sealing ring 24 to seal the quick-connect straight connector 1 and the pipe fitting 7. Both the first sealing ring 8 and the second sealing ring 24 are O-rings, and their parting surface is the same as that of the dustproof ring 10 mentioned above. They are also located at a position with an angle of 45° to the plane containing the diameter of the sealing ring, which greatly improves the sealing effect.

[0044] The installation process of this invention is as follows: First, insert the first sealing ring 8 into the quick-connect connector 1, and insert the dustproof ring 10 into the O-ring groove 13 inside the quick-connect connector 1, so that the protrusion 131 of the O-ring groove 13 is located in the anti-rotation groove 101 of the dustproof ring 10. Then, insert the second sealing ring 24 into the nut seat 2. Align the connecting ring 53 of the locking snap ring 5 with the limiting ring 66 and place it into the snap ring positioning groove 61. Then, use snap ring pliers to pry open the locking snap ring 5 until the pointed hook 51 of the locking snap ring 5 hooks the positioning step 67. Release the snap ring pliers, and the arc-shaped protrusion of the positioning snap ring 52 passes through the hollow ring 65 and enters the interior of the positioning ring 6, completing the installation of the locking snap ring 5 and the snap ring positioning groove 61. The auxiliary locking snap ring 4 is also inserted into the auxiliary snap ring positioning groove 62 using snap ring pliers. Next, place the protruding ring 63 of the positioning ring 6 between the retaining ring 32 and the retaining ring 33 of the fixing ring 3, and press the retaining ring 32 inside the fixing ring 3 into the fixing groove 23 at the end of the nut seat 2 to fix the two. The gap between the end of the nut seat 2 and the retaining ring 33 allows... Figure 2The positioning ring 6 has a certain amount of room to move in the current state. During assembly, the insertion head 12 of the quick-connect straight connector 1 is pressed down, forcing the positioning ring 6 to move down until the convex ring 63 touches and is limited by the retaining ring 33. The auxiliary locking spring 4 moves to below the fixed protrusion 25, and the locking spring 5 moves to below the retaining ring 33. At this time, there is room for the auxiliary locking spring 4 and the locking spring 5 to unfold. As the insertion head 12 of the quick-connect straight connector 1 continues to be pressed downwards, the auxiliary locking spring 4 is first deployed, followed by the locking spring 5, until the positioning ring 52 of the locking spring 5 enters the locking groove 15 and locks the groove wall of the locking groove 15. That is, after the quick-connect straight connector 1 is inserted into the nut seat 2, the locking groove 15 of the quick-connect straight connector 1 is locked by the locking spring 5 in the positioning ring 6, thus fixing the quick-connect straight connector 1 in the nut seat 2 and preventing it from falling off. The auxiliary locking spring 4 restricts the sliding space of the quick-connect straight connector 1 in the nut seat 2, preventing the locking spring 5 from falling off. During the above process, when the quick-connect straight connector 1 is pressed downwards, the dustproof ring 10 is compressed. When the positioning ring 52 of the locking spring 5 locks the groove wall of the locking groove 15, the compressed dustproof ring 10 begins to rebound, causing the quick-connect straight connector 1 to move upwards to the desired position. Figure 1 At the indicated position, the locking spring 5, the positioning ring 6, and the auxiliary locking spring 4 simultaneously spring back and move upward together with the quick-connect straight connector 1 until they reach the indicated position. Figure 1 The location shown. (As indicated) Figure 2 As shown, the interaction between the inclined portion of the convex ring 63 and the inclined portion of the fixed protrusion 25 guides the upward movement of the positioning ring 6, ensuring a stable rebound process. When the positioning ring 6 moves upward until the convex ring 63 contacts the end of the nut seat 2, the unfolding of the auxiliary locking spring 4 is limited by the fixed protrusion 25, and the unfolding of the locking spring 5 is limited by the retaining ring 33. The auxiliary locking spring 4 and the locking spring 5 lose their unfolding space, firmly locking the groove wall of the locking groove 15. Finally, the nut seat 2 is fixed to the pipe fitting 7 through the engagement of internal and external threads, thus completing the entire assembly.

[0045] When disassembly is required, first check if the pipeline is pressurized. Then, unscrew the pipe fitting 7 and nut seat 2. Next, use special pliers to clamp the groove 31 on the outer wall of the retaining ring 3 and forcefully pry it outward to remove the retaining ring 3. Then, insert the disassembly hook into the gap in the retaining ring 61 on the positioning ring 6 and pull out the locking retaining ring 5 from the side to release the locking retaining ring 5 from the groove wall of the locking groove 15. Then, move the positioning ring 6 downward until the auxiliary locking retaining ring 4 has room to unfold. Then, insert the disassembly hook into the gap in the auxiliary retaining ring 62 on the positioning ring 6 and pull out the auxiliary locking retaining ring 4 from the side. Then, remove the positioning ring 6 from the head of the quick-connect straight connector 1. At this time, the quick-connect straight connector 1 can be pulled out from the nut seat 2. Finally, remove the other parts.

[0046] Before reassembly, it is necessary to check whether the nut seat 2, the first sealing ring 8, the second sealing ring 24, and the dustproof ring 10 are damaged.

[0047] During the inspection, samples 1-17 of quick-connect connectors with the same material and structure as the present invention were prepared. Each sample underwent room temperature high pressure sealing performance test, room temperature pull-out force test, low temperature pull-out force test, high temperature pull-out force test, metal part salt spray resistance test, and vibration test. The test structure is detailed in Tables 3-8. The test results meet the standard technical requirements, and the pull-out force is significantly better than the standard technical requirements.

[0048]

[0049] Table 3. Inspection of Sealing Performance under Normal Temperature and High Pressure

[0050] Table 4. Pull-out force test table at room temperature

[0051] Table 5 Low Temperature Pull-out Force Test Table

[0052] Table 6 High Temperature Pull-out Force Test Table

[0053] Table 7 Salt Spray Resistance Test Form for Metal Parts

[0054] Table 8 Vibration Test Checklist This invention improves upon the existing brass-made quick-connect connector 1 and nut seat 2 by replacing them with a new type of aluminum alloy. This significantly reduces costs and weight, meeting the requirements for lightweight construction, while also improving strength, hardness, and corrosion resistance, resulting in superior performance. A self-locking device between the quick-connect connector 1 and nut seat 2 enables rapid assembly, meeting the installation requirements in confined spaces. A locking spring 5 secures the quick-connect connector 1 within the nut seat 2, preventing it from falling off. The auxiliary locking spring... 4. The sliding space of the quick-connect straight connector 1 within the nut seat 2 is limited to prevent the locking spring 5 from falling off. After assembly, the unfolding of the auxiliary locking spring 4 is limited by the fixing protrusion 25, and the unfolding of the locking spring 5 is limited by the retaining ring 33. The auxiliary locking spring 4 and the locking spring 5 lose their unfolding space, firmly locking the groove wall of the locking groove 15 on the quick-connect straight connector 1, thus achieving self-locking. The leakage alarm function is realized through the first V-shaped groove 21 on the inner wall of the nut seat 2 and the second V-shaped groove 22 at the inner port of the nut seat 2, improving the safety of use.

[0055] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should fall within the protection scope of the present invention.

Claims

1. A quick-connect connector made of a new type of aluminum alloy material, characterized in that... It includes a quick-connect straight connector (1) and a nut seat (2). The quick-connect straight connector (1) is provided with bamboo-shaped reverse teeth (11) for quick connection with nylon tube (9). The nut seat (2) is threaded onto the pipe fitting seat (7). The quick-connect straight connector (1) is mounted on the nut seat (2). The quick-connect straight connector (1) is made of a new type of aluminum alloy material. The composition of the aluminum alloy material by mass percentage is: silicon ≤ 0.50%, iron ≤ 0.30%, 1.0% ≤ copper ≤ 2.0%, manganese ≤ 0.20%, 1.0% ≤ magnesium ≤ 2.0%, chromium ≤ 0.10%, 5.5% ≤ zinc ≤ 7.0%, titanium ≤ 0.10%, and the balance is aluminum.

2. The quick-connect connector using a novel aluminum alloy material according to claim 1, characterized in that... The nut seat (2) is also made of the same aluminum alloy material as the quick-connect straight connector (1).

3. The quick-connect connector using a novel aluminum alloy material according to claim 1, characterized in that... A self-locking device is provided between the quick-connect straight connector (1) and the nut seat (2). The self-locking device includes a fixing ring (3), a positioning ring (6), and a locking snap ring (5). The fixing ring (3) is installed at the end of the nut seat (2). The positioning ring (6) is located inside the fixing ring (3). A snap ring positioning groove (61) is made on the positioning ring (6). The locking snap ring (5) is installed in the snap ring positioning groove (61) and locks one end of the quick-connect straight connector (1).

4. The quick-connect connector using a novel aluminum alloy material according to claim 3, characterized in that... The outer wall of the positioning ring (6) is provided with a convex ring (63). The inner wall of the fixing ring (3) protrudes inward near the middle to form a retaining ring (33). The outer wall of the retaining ring (33) is provided with a groove (31). The convex ring (63) is located between the end of the nut seat (2) and the retaining ring (33). There is a distance between the end of the nut seat (2) and the retaining ring (33). The locking spring (5) is located below the convex ring (63).

5. The quick-connect connector using a novel aluminum alloy material according to claim 4, characterized in that... The quick-connect straight connector (1) has an O-ring groove (13) on the outer wall of the part into the nut seat (2). A protrusion (131) is formed in the middle of the O-ring groove (13). A dustproof ring (10) is installed on the O-ring groove (13). An anti-rotation groove (101) is formed on the dustproof ring (10). The protrusion (131) in the O-ring groove (13) is located in the anti-rotation groove (101). After the quick-connect straight connector (1) and the nut seat (2) are assembled, the dustproof ring (10) is located at the top of the inner wall of the nut seat (2). When the quick-connect straight connector (1) is assembled, it is pressed down and the positioning ring (6) is moved down until the convex ring (63) touches the buckle (33) and is limited, so that the locking spring (5) is located below the buckle (33). At this time, the locking spring (5) has an unfolding space. The quick-connect straight connector (1) continues to be pressed down and the locking spring (5) unfolds, so that the locking spring (5) locks the quick-connect straight connector (1). The quick-connect straight connector (1) is fixed to the nut seat (2). The process of the quick-connect straight connector (1) being squeezed downwards causes the dust ring (10) to be compressed. When the locking spring (5) locks the quick-connect straight connector (1), the compressed dust ring (10) begins to rebound, causing the quick-connect straight connector (1), the locking spring (5), and the positioning ring (6) to move upwards, so that the convex ring (63) contacts the end of the nut seat (2). At this time, the retaining ring (33) is located outside the retaining spring positioning groove (61). The side of the retaining ring (33) limits the locking spring (5), so that the locking spring (5) loses its unfolding space and cannot be fully unfolded, thus completing the assembly between the quick-connect straight connector (1), the nut seat (2), and the self-locking fixing device.

6. The quick-connect connector using a novel aluminum alloy material according to claim 3, characterized in that... The locking spring (5) is approximately C-shaped. The locking spring (5) consists of two pointed hooks (51) located at the opening, two positioning rings (52) connected to the two pointed hooks (51) respectively, and a connecting ring (53) connecting the two positioning rings (52). The inner sides of the two positioning rings (52) form an arc-shaped protrusion towards the center. The snap ring positioning groove (61) is also approximately C-shaped. The snap ring positioning groove (61) is composed of a hook positioning ring (64), a hollow ring (65), and a limiting ring (66). The hook positioning ring (64) has a positioning step (67). The hook (51) hooks the positioning step (67). The positioning ring (52) of the locking snap ring (5) is located in the hollow ring (65). The arc-shaped protrusion of the positioning ring (52) passes through the hollow ring (65) and enters the interior of the positioning ring (6). The limiting ring (66) is located on the inner side of the end of the hollow ring (65). The limiting ring (66) cooperates with the connecting ring (53). The end of the quick-connect straight connector (1) inserted into the nut seat (2) has a locking groove (15), and the positioning ring (52) enters the arc-shaped protrusion inside the positioning ring (6) and locks the groove wall of the locking groove (15).

7. The quick-connect connector using a novel aluminum alloy material according to claim 6, characterized in that... The positioning ring (6) is also provided with an auxiliary snap ring positioning groove (62), and an auxiliary locking snap ring (4) is installed in the auxiliary snap ring positioning groove (62). The auxiliary snap ring positioning groove (62) has the same structure as the snap ring positioning groove (61). The auxiliary locking snap ring (4) has the same shape as the locking snap ring (5). The arc-shaped protrusion of the auxiliary locking snap ring (4) entering the positioning ring (6) is located in the locking groove (15). The auxiliary locking snap ring (4) is located above the locking snap ring (5).

8. The quick-connect connector using a novel aluminum alloy material according to claim 3, characterized in that... The end of the nut seat (2) is provided with a fixing protrusion (25), and a second guide slope (26) is provided on the fixing protrusion (25). A fixing groove (23) is formed between the upper surface of the fixing protrusion (25) and the bottom of the threaded section of the nut seat (2). One end of the fixing ring (3) is bent inward to form a fixing retainer (32). A third guide slope (34) is provided on the fixing retainer (32). The fixing retainer (32) presses the fixing protrusion (25) so that the fixing protrusion (25) passes through the fixing retainer (32). The fixing retainer (32) is inserted into the fixing groove (23). The bottom surface of the fixing retainer (32) contacts the upper surface of the fixing protrusion (25), so that the fixing ring (3) is fixed at the end of the nut seat (2).

9. The quick-connect connector using a novel aluminum alloy material according to claim 1, characterized in that... One end of the quick-connect straight connector (1) is an insertion head (12), and the insertion head (12) is provided with a first guide slope (14). The insertion head (12) is inserted into the nut seat (2). The outer wall of the quick-connect straight connector (1) inserted into the nut seat (2) is provided with a first sealing ring (8) to seal the quick-connect straight connector (1) and the nut seat (2), and the threaded section of the nut seat (2) is provided with a second sealing ring (24) to seal the quick-connect straight connector (1) and the pipe connector (7).

10. The quick-connect connector using a novel aluminum alloy material according to claim 1, characterized in that... The inner wall of the nut seat (2) is provided with six first V-shaped grooves (21), and the inner port of the nut seat (2) is provided with twelve second V-shaped grooves (22). The first V-shaped grooves (21) and the second V-shaped grooves (22) are staggered one by one.

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