Pipe joint of automobile air conditioner pipeline

Abstract

The utility model relates to the technical field of automobile air-conditioning systems, in particular to a pipe joint of an automobile air-conditioning pipeline, which is used for being connected with a high-pressure or low-pressure pipeline in an air-conditioning system and ensuring efficient transmission and sealing performance of refrigerants. The pipe joint of the automobile air conditioner pipeline comprises a male joint body and a female joint body which are matched with each other, a stepped sealing boss is arranged on the outer side of the inserting end of the male joint body, and a sealing groove in interference fit with the sealing boss is formed in a port of the female joint body. An annular anti-disengaging groove is formed in the outer side of the male connector, an elastic buckle is arranged on the female connector, and the elastic buckle is connected with the anti-disengaging groove in a clamped mode. A dust cover is arranged on the outer side of the joint of the male connector and the female connector in a sleeving mode. According to the air conditioner pipeline connector, double sealing is achieved through the stepped sealing boss and the O-shaped sealing ring, leakage of refrigerants can be effectively prevented, and it is ensured that the connector can still be stably connected in the vibration environment through cooperation of the elastic buckle and the sawtooth structure of the anti-disengaging groove.

Description

Technical Field

[0001] This utility model relates to the field of automotive air conditioning system technology, specifically to a pipe connector for automotive air conditioning pipelines, used to connect high-pressure or low-pressure pipelines in the air conditioning system to ensure efficient refrigerant transmission and sealing. Background Technology

[0002] Automotive air conditioning piping is a key component of the air conditioning system, used to transport refrigerant (such as R134a or R1234yf) through the compressor, condenser, evaporator, and expansion valve to achieve cooling or heating functions. The piping needs to withstand high pressure and temperature variations, therefore the sealing and reliability of its connections are crucial.

[0003] However, most existing automotive air conditioning pipe joints use a single-stage sealing structure, which is prone to leakage under long-term vibration or temperature changes, leading to refrigerant loss and reduced air conditioning efficiency. In addition, the pipe connections are exposed, and dust, oil and other impurities can easily enter the joint, affecting the life of the sealing ring and even causing blockage or corrosion. Utility Model Content

[0004] The purpose of this invention is to provide a pipe connector for automotive air conditioning pipes. By improving the sealing structure and anti-detachment design, the connection reliability and sealing performance are enhanced, while dustproof function is added and service life is extended.

[0005] To solve the above-mentioned technical problems, the present invention provides a pipe connector for an automotive air conditioning pipeline, comprising a male connector and a female connector that cooperate with each other. The male connector has a stepped sealing boss on the outside of its insertion end, and the female connector has a sealing groove at its port that is interference-fitted with the sealing boss. The male connector has an annular anti-detachment groove on its outside, and the female connector has an elastic buckle that engages with the anti-detachment groove. A dust cover is fitted over the connection between the male and female connectors.

[0006] As a preferred embodiment of this utility model, the female connector has a guide bevel at its port and the male connector has a chamfer on its inner wall at the insertion end that matches the guide bevel.

[0007] As a preferred embodiment of this utility model, the sealing boss includes at least two cylindrical surfaces of different diameters, and adjacent cylindrical surfaces are connected by a transition slope.

[0008] As a preferred embodiment of this utility model, an O-ring is embedded in the sealing groove, and the cross-sectional diameter of the O-ring is greater than the depth of the sealing groove.

[0009] As a preferred technical solution of this utility model, the elastic buckle is a U-shaped elastic sheet, one end of which is fixed to the outer wall of the female connector, and the other end extends inward to form an inner protruding buckle head, and the protruding buckle head is engaged with the anti-disengagement groove.

[0010] As a preferred embodiment of this utility model, the contact surface of the protruding clip head has a serrated structure, and the corresponding surface of the anti-detachment groove is an inwardly inclined slope.

[0011] As a preferred technical solution of this utility model, one end of the dust cover is fixedly connected to the female connector, and the other end is a free telescopic structure. The dust cover is a corrugated pipe structure, and its material is one of oil-resistant rubber or silicone.

[0012] The advantages of this utility model compared with the prior art are as follows:

[0013] 1. This air conditioning pipe joint uses a double seal of stepped sealing boss and O-ring to effectively prevent refrigerant leakage. The elastic buckle and anti-dislodgement serrated structure ensure that the joint can maintain a stable connection even under vibration.

[0014] 2. This air conditioning pipe joint features a corrugated dust cover on the outside of the joint, which can extend and cover the connection area, reducing the intrusion of dust and oil and extending its service life. Attached Figure Description

[0015] Figure 1 This is an overall structural diagram of a pipe connector for an automotive air conditioning pipeline according to this utility model.

[0016] Figure 2 This is a structural diagram of a pipe connector for an automotive air conditioning pipeline according to the present invention.

[0017] Figure 3 This is a three-dimensional cross-sectional view of a pipe connector for an automotive air conditioning system according to this utility model.

[0018] Figure 4 This is an enlarged view of the structure at point A of the pipe connector of an automotive air conditioning pipeline according to this utility model.

[0019] As shown in the figure:

[0020] 1. Male connector; 2. Female connector; 3. Sealing boss; 4. Sealing groove; 5. Anti-detachment groove; 6. Elastic buckle; 7. Dust cover; 8. Guide slope; 9. Cylindrical surface; 10. Transition slope; 11. O-ring seal; 12. Raised clamp. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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 based on the specific circumstances.

[0023] Example 1:

[0024] As per the instruction manual Figure 1-4 As shown, a pipe connector for an automotive air conditioning system includes a male connector 1 and a female connector 2 that cooperate with each other. The female connector 2 has a guide bevel 8 at its port, and the inner wall of the insertion end of the male connector 1 has a chamfer that cooperates with the guide bevel 8.

[0025] In this utility model, the male connector 1 has a stepped sealing boss 3 on the outside of the insertion end. The sealing boss 3 includes at least two cylindrical surfaces 9 with different diameters, and adjacent cylindrical surfaces 9 are connected by a transition slope 10. The female connector 2 has a sealing groove 4 at the port that is interference-fitted with the sealing boss 3. An O-ring 11 is embedded in the sealing groove 4. The cross-sectional diameter of the O-ring 11 is greater than the depth of the sealing groove 4.

[0026] In this utility model, the male connector 1 is provided with an annular anti-detachment groove 5 on its outer side, and the female connector 2 is provided with an elastic buckle 6. The elastic buckle 6 is a U-shaped elastic piece. One end of its U-shaped structure is fixed to the outer wall of the female connector 2, and the other end extends inward to form an inner protruding buckle 12. The protruding buckle 12 is engaged with the anti-detachment groove 5. The contact surface of the protruding buckle 12 is a sawtooth structure, and the corresponding surface of the anti-detachment groove 5 is an inwardly inclined slope, which can further prevent the protruding buckle 12 from loosening.

[0027] In this utility model, a dust cover 7 is provided on the outside of the connection between the male connector 1 and the female connector 2. One end of the dust cover 7 is fixedly connected to the female connector 2, and the other end is a free telescopic structure. The dust cover 7 is a corrugated pipe structure, and its material is one of oil-resistant rubber or silicone.

[0028] In a specific implementation of this utility model, the sealing boss 3 of the male connector 1 is inserted into the sealing groove 4 of the female connector 2, forming the first seal through an interference fit. At the same time, the O-ring 11 is deformed under pressure, forming a leak-free seal. The U-shaped elastic buckle 6 of the female connector 2 is engaged with the anti-detachment groove 5 of the male connector 1. The serrated surface of the protruding buckle 12 engages with the inclined surface of the anti-detachment groove 5 to prevent loosening. The U-shaped structure of the elastic buckle 6 provides elastic pre-tightening force, ensuring that the protruding buckle 12 is always tightly attached to the anti-detachment groove 5, preventing loosening caused by vibration. The corrugated structure of the dust cover 7 can expand and contract with the connector, ensuring that the connection part is always in a closed state to avoid dust corrosion.

[0029] The present invention and its embodiments have been described above. This description is not restrictive, and the specific embodiments shown are only one of the embodiments of the present invention. The actual structure is not limited to this. In short, if a person skilled in the art is inspired by this description and designs a similar structure and embodiment without departing from the inventive spirit of the present invention, such design should fall within the protection scope of the present invention.

Claims

1. A pipe fitting for an automotive air conditioning system, comprising a male connector (1) and a female connector (2) that mate with each other, characterized in that: The male connector (1) has a stepped sealing boss (3) on the outside of the insertion end, and the female connector (2) has a sealing groove (4) that is interference fit with the sealing boss (3) at the port. The male connector (1) has an annular anti-detachment groove (5) on its outer side, and the female connector (2) has an elastic buckle (6) which engages with the anti-detachment groove (5). A dust cover (7) is provided on the outside of the connection between the male connector (1) and the female connector (2).

2. A pipe connector for an automotive air conditioning pipeline according to claim 1, characterized in that: The female connector (2) has a guide slope (8) at its port, and the inner wall of the insertion end of the male connector (1) has a chamfer that matches the guide slope (8).

3. A pipe connector for an automotive air conditioning pipeline according to claim 1, characterized in that: The sealing boss (3) includes at least two cylindrical surfaces (9) of different diameters, and adjacent cylindrical surfaces (9) are connected by a transition slope (10).

4. A pipe connector for an automotive air conditioning pipeline according to claim 1, characterized in that: The sealing groove (4) is inlaid with an O-ring (11), and the cross-sectional diameter of the O-ring (11) is greater than the depth of the sealing groove (4).

5. A pipe connector for an automotive air conditioning pipeline according to claim 1, characterized in that: The elastic buckle (6) is a U-shaped elastic sheet. One end of its U-shaped structure is fixed to the outer wall of the female connector (2), and the other end extends inward to form an inner protruding buckle (12), and the protruding buckle (12) is engaged with the anti-detachment groove (5).

6. A pipe connector for an automotive air conditioning pipeline according to claim 5, characterized in that: The contact surface of the protruding clip (12) is a sawtooth structure, and the corresponding surface of the anti-detachment groove (5) is an inwardly inclined slope.

7. A pipe connector for an automotive air conditioning pipeline according to claim 1, characterized in that: One end of the dust cover (7) is fixedly connected to the female connector (2), and the other end is a free telescopic structure. The dust cover (7) is a corrugated pipe structure, and its material is either oil-resistant rubber or silicone.

Images