Leakage-proof self-locking airtightness detector sealing joint structure

Abstract

The utility model discloses a kind of leak-proof self-locking type air tightness detector sealing joint structure, including joint sleeve, the joint sleeve one end is fixedly provided with fluid pipe and fluid pipe inside is provided with tail fluid hole, the other end inside of joint sleeve is provided with multiple locking paw and locking paw rear side is provided with sealing ring, sealing ring outer wall is attached with connecting cylinder, the one end of connecting cylinder is fixedly attached with first spring, the other end of first spring is fixed with the inner wall of joint sleeve, the outer wall of connecting cylinder is fixedly provided with guide insertion rod, two guide insertion rod upper end is all provided with limit lug, the inside upper and lower end of joint sleeve is symmetrically provided with pressing column, the joint sleeve is made of stainless steel material, the one end of joint sleeve is located at locking paw and is attached surface and is set into inclined shape, can realize the quick locking of pipe fitting, improve its sealing effect at the same time, prevent gas leakage influence air tightness detection.

Description

Technical Field

[0001] This utility model relates to the field of sealing joint technology for sealing testers, and in particular to a leak-proof self-locking sealing joint structure for airtightness testers. Background Technology

[0002] An airtightness tester is a professional instrument used to test the sealing performance of products or equipment. By simulating a specific pressure environment, it monitors the gas leakage inside or outside the tested object and determines whether it meets the prescribed airtightness standards. It is widely used in industries such as automobile manufacturing, electronics, medical devices, aerospace, home appliances, and sanitary ware to ensure that products will not suffer from performance degradation, malfunctions, or safety hazards due to leakage during use.

[0003] Existing airtightness tester connectors have some shortcomings in use. Each time the airtightness tester pipe is fixed to the connector, the staff needs to manually tighten the bolts to connect them. The sealing performance is relatively poor, and the operation is relatively cumbersome. It does not have the ability to quickly lock and fix the connection. To address the above problems, a leak-proof self-locking airtightness tester sealing connector structure is proposed for improvement and upgrading. Utility Model Content

[0004] The purpose of this invention is to provide a leak-proof, self-locking sealing joint structure for an airtightness tester, in order to solve the problems mentioned in the background art.

[0005] To solve the above problems, the following technical solution is provided: a leak-proof self-locking airtightness tester sealing joint structure, including a joint sleeve, a fluid pipe fixedly installed at one end of the joint sleeve with a tail fluid hole inside the fluid pipe, multiple locking claws inside the other end of the joint sleeve with a sealing ring behind the locking claws, the outer wall of the sealing ring fitting against the connecting cylinder, a first spring fixedly fitted at one end of the connecting cylinder, the other end of the first spring fixed to the inner wall of the joint sleeve, guide rods symmetrically fixedly installed on the outer wall of the connecting cylinder, each guide rod having a limit protrusion at its upper end, and pressing posts symmetrically installed at the upper and lower ends inside the joint sleeve.

[0006] As a preferred embodiment of the above technical solution, the connector sleeve is made of stainless steel, one end of the connector sleeve is inclined at the mating surface of the locking claw, the outer wall of the locking claw fits against the inclined surface, and the outer wall of the connector sleeve is provided with anti-slip knurling.

[0007] As a preferred embodiment of the above technical solution, a connecting pipe is provided on one side of the connector sleeve, the connecting pipe is adapted to the size of the connector sleeve, and a plastic anti-slip pad is fixedly provided inside the locking claw teeth.

[0008] As a preferred embodiment of the above technical solution, each of the multiple locking claws has an insertion groove inside, the sealing ring is fixedly installed inside the insertion groove, one end of the connecting cylinder is adapted to the size of the insertion groove, and the locking claw is connected to the connecting cylinder.

[0009] As a preferred embodiment of the above technical solution, each of the two guide rods has an installation groove inside, and a retaining spring is fixedly installed inside the installation groove. One end of the retaining spring is fixedly connected to the bottom of the limiting protrusion.

[0010] As a preferred embodiment of the above technical solution, the upper and lower sides of the connector sleeve are provided with guide grooves that are adapted to the size of the guide rod. The guide rod is slidably connected inside the guide groove. The connector sleeve is provided with a snap-fit ​​groove that communicates with one end of the guide groove. The snap-fit ​​groove is adapted to the size of the pressing column.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. This utility model device is equipped with locking claws, sealing rings, a first spring, a connecting cylinder, a guide rod, a snap ring, and a limiting protrusion, which helps to effectively lock and fix the pipe fittings during connection while improving their sealing performance and preventing gas leakage from affecting the airtightness test. At the same time, it can self-lock when the connecting pipe fittings are squeezed into the joint. It is easy to disassemble and assemble, reduces the burden on the staff, and is simple to operate. It avoids the problems of difficult disassembly and assembly caused by bolt connection and fixation, saving time and effort.

[0013] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the present invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope. Within the spirit and scope of the appended claims, the embodiments of the present invention include many changes, modifications, and equivalents. Attached Figure Description

[0014] 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:

[0015] Figure 1 This is a schematic diagram of the overall structure of the sealing joint of a leak-proof self-locking airtightness tester according to the present invention;

[0016] Figure 2 This is a partially disassembled structural diagram of the sealing joint structure of a leak-proof self-locking airtightness tester according to the present invention;

[0017] Figure 3 for Figure 1 Schematic diagram of the cross-section structure;

[0018] Figure 4 for Figure 3 A schematic diagram of the partially split structure.

[0019] In the diagram: 1. Connector sleeve; 2. Tail fluid hole; 3. Anti-slip knurling; 4. Pressing post; 5. Connecting pipe fitting; 6. Locking claw; 7. Plastic anti-slip pad; 8. Sealing ring; 9. Insertion groove; 10. Connecting cylinder; 11. First spring; 12. Guide rod; 13. Guide groove; 14. Mounting groove; 15. Snap ring; 16. Limiting protrusion. Detailed Implementation

[0020] 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.

[0021] like Figures 1 to 4 As shown in the figure, this embodiment provides a leak-proof self-locking airtightness tester sealing joint structure, including a joint sleeve 1. One end of the joint sleeve 1 is fixedly provided with a fluid pipe and the fluid pipe has a tail fluid hole 2. The other end of the joint sleeve 1 is provided with multiple locking claws 6 and a sealing ring 8 is provided on the rear side of the locking claws 6. The outer wall of the sealing ring 8 is in contact with the connecting cylinder 10. One end of the connecting cylinder 10 is fixedly attached with a first spring 11. The other end of the first spring 11 is fixed to the inner wall of the joint sleeve 1. Guide rods 12 are symmetrically fixedly provided on the outer wall of the connecting cylinder 10. Limiting protrusions 16 are provided at the upper ends of the two guide rods 12. Pressing columns 4 are symmetrically provided at the upper and lower ends inside the joint sleeve 1.

[0022] like Figures 2 to 3 As shown, the connector sleeve 1 is made of stainless steel. One end of the connector sleeve 1 is inclined on the mating surface of the locking claw 6. The outer wall of the locking claw 6 is in contact with the inclined surface. The outer wall of the connector sleeve 1 is provided with anti-slip knurling 3. A connecting pipe 5 is provided on one side of the connector sleeve 1. The connecting pipe 5 is adapted to the size of the connector sleeve 1. A plastic anti-slip pad 7 is fixedly installed inside each locking claw 6. A insertion groove 9 is opened inside each locking claw 6. A sealing ring 8 is fixedly installed inside the insertion groove 9. One end of the connecting cylinder 10 is adapted to the size of the insertion groove 9. The locking claw 6 is connected to the connecting cylinder 10.

[0023] The anti-slip knurling 3 facilitates operator gripping of the connector, increases friction, and prevents hand slippage during insertion or removal of the pipe, improving ease of operation and operability. The tail fluid hole 2 allows test gas to smoothly enter the connector and reach the tested pipe, enabling airtightness testing. The stainless steel material of the connector sleeve 1 enhances overall structural strength, stability, and corrosion resistance, adapting to different working environments and testing requirements. A plastic anti-slip pad 7 is installed on the inner wall of the locking claw 6, ensuring relative stability during pipe clamping and locking, preventing lateral slippage and affecting airtightness testing. Simultaneously, an inclined surface at one end of the connector sleeve 1, conforming to the outer wall of the locking claw 6, facilitates rapid retraction of the locking claw 6 into the connector sleeve 1 when the pipe is pressed inside, providing a limiting position. The connecting pipe 5 is compatible with the sealing ring 8, which is made of neoprene rubber, offering excellent elasticity and sealing performance to prevent gas leakage.

[0024] like Figure 4 As shown, both guide rods 12 have mounting grooves 14 inside, and a retaining spring 15 is fixedly installed inside the mounting groove 14. One end of the retaining spring 15 is fixedly connected to the bottom of the limiting protrusion 16. The upper and lower sides of the connector sleeve 1 are provided with guide grooves 13 that are adapted to the size of the guide rods 12. The guide rods 12 are slidably connected inside the guide grooves 13. The connector sleeve 1 has a snap-fit ​​groove that communicates with one end of the guide groove 13. The snap-fit ​​groove is adapted to the size of the pressing post 4.

[0025] By setting the guide groove 13, when the connecting cylinder 10 drives the guide rod 12 to squeeze the first spring 11, the two guide rods 12 drive the limiting protrusion 16 to move to the snap-fit ​​groove and use the spring force of the snap-fit ​​spring 15 to limit it. At the same time, the contact part between the guide groove 13 and the snap-fit ​​groove is relatively smooth, which makes it easy for the pressing column 4 to slide quickly in the guide groove 13 when it squeezes the limiting protrusion 16. The pressing column 4 is slidably installed inside the snap-fit ​​groove. The first spring 11 is set. When the pipe is inserted into the connector, the first spring 11 is compressed and stores energy. When the pressing column 4 squeezes the limiting protrusion 16, it causes the guide rod 12 to drive the connecting cylinder 10 to push the locking claw 6 to move outward under the energy released by the first spring 11, thereby causing the connecting pipe 5 to be misaligned with the connector sleeve 1, and the pipe is quickly disassembled.

[0026] The working principle and process of this utility model are as follows: When connecting and fixing the pipe fitting to the connector sleeve 1, firstly, when pushing one end of the connecting pipe fitting 5 forward into the connector sleeve 1, the locking claws 6 at the front end of the connector are open due to the compression of the internal first spring 11 and the cooperation of the connecting cylinder 10 structure. When the front end of the connecting pipe fitting 5 abuts against the front end structure of the connector and is inserted inward, it causes one end of the connecting pipe fitting 5 to compress the sealing ring 8, which causes multiple locking claws 6 to retract into the connector sleeve 1. Continuing to push it into the rated position, the connecting cylinder 10 compresses the first spring 11 to store force. When the connecting cylinder 10 moves, the limiting protrusions 16 on the two guide rods 12 are engaged with the snap-fit ​​groove in cooperation with the snap-fit ​​spring 15, causing the locking claws 6 to retract and utilize the plastic anti-slip material. The pad 7 quickly and automatically locks the connecting pipe fitting 5, while the front end of the connector and the sealing ring 8 on the end face of the pipe fitting are squeezed to form a good sealing surface. This allows the pipe fitting and connector to be quickly locked and fixed while effectively sealing and preventing leakage. After the test is completed, the test fluid is first drained out. Then, by holding the anti-slip knurled part 3 of the connector with one hand and pressing the two pressing posts 4 in opposite directions, the two limiting protrusions 16 are squeezed. The limiting protrusions 16 are compressed under the action of the snap ring 15. When the size of the limiting protrusions 16 is aligned with the guide groove 13, the guide rod 12 on the connecting cylinder 10 is ejected outward along the direction of the guide groove 13 under the action of the first spring 11. This causes multiple locking claws 6 to slide out along the inclined surface. Then, the connecting pipe fitting 5 is quickly disassembled. The operation is simple.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

Claims

1. A leak-proof, self-locking sealing joint structure for an airtightness tester, characterized in that, The device includes a connector sleeve (1), one end of which is fixedly provided with a fluid pipe and the fluid pipe has a tail fluid hole (2) inside. The other end of the connector sleeve (1) is provided with multiple locking claws (6) and a sealing ring (8) is provided on the rear side of the locking claws (6). The outer wall of the sealing ring (8) is in contact with the connecting cylinder (10). One end of the connecting cylinder (10) is fixedly attached to a first spring (11), and the other end of the first spring (11) is fixed to the inner wall of the connector sleeve (1). The outer wall of the connecting cylinder (10) is symmetrically fixedly provided with guide rods (12). The upper end of each of the two guide rods (12) is provided with a limit protrusion (16). The upper and lower ends of the connector sleeve (1) are symmetrically provided with pressing columns (4).

2. The leak-proof self-locking airtightness tester sealing joint structure according to claim 1, characterized in that, The connector sleeve (1) is made of stainless steel. One end of the connector sleeve (1) is inclined on the mating surface of the locking claw (6). The outer wall of the locking claw (6) is in contact with the inclined surface. The outer wall of the connector sleeve (1) is provided with anti-slip knurling (3).

3. The leak-proof self-locking airtightness tester sealing joint structure according to claim 2, characterized in that, A connecting pipe (5) is provided on one side of the connector sleeve (1). The size of the connecting pipe (5) is compatible with that of the connector sleeve (1). Plastic anti-slip pads (7) are fixedly provided inside the locking claws (6).

4. The leak-proof self-locking airtightness tester sealing joint structure according to claim 1, characterized in that, Multiple locking claws (6) are provided with insertion slots (9) inside. The sealing ring (8) is fixedly installed inside the insertion slot (9). One end of the connecting cylinder (10) is adapted to the size of the insertion slot (9). The locking claws (6) are connected to the connecting cylinder (10).

5. The leak-proof self-locking airtightness tester sealing joint structure according to claim 1, characterized in that, Both guide rods (12) have an installation groove (14) inside, and a retaining ring (15) is fixedly installed inside the installation groove (14). One end of the retaining ring (15) is fixedly connected to the bottom of the limiting protrusion (16).

6. The leak-proof self-locking airtightness tester sealing joint structure according to claim 5, characterized in that, The connector sleeve (1) has guide grooves (13) on both the upper and lower sides that are adapted to the size of the guide rod (12). The guide rod (12) is slidably connected inside the guide groove (13). The connector sleeve (1) has a snap-fit ​​groove that is connected to one end of the guide groove (13). The snap-fit ​​groove is adapted to the size of the pressing column (4).

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