Exhaust hose of automobile air conditioning system

Abstract

The utility model discloses an exhaust hose of an automobile air conditioning system, which comprises a rubber pipe and a joint, two ends of the rubber pipe are fixedly communicated with external thread connecting pipes, one end of the joint is fixedly connected with an internal thread connecting pipe, a gap is arranged between the internal thread connecting pipe and the joint, the gap forms an annular slot, and the joint is fixedly connected with the internal thread connecting pipe. And a cylindrical sealing ring is fixedly connected to the interior of the annular slot. According to the utility model, the external thread connecting pipe and the internal thread connecting pipe are matched for use, so that the rubber pipe can be in threaded connection with the joint, and the joint or the connecting pipe can be conveniently and independently replaced in the later period; the internal thread connecting pipe and the external thread connecting pipe which are in threaded connection can be further limited and fixed, it is guaranteed that the external thread connecting pipe and the internal thread connecting pipe cannot move relatively, the external thread connecting pipe and the internal thread connecting pipe are prevented from loosening, and therefore the connecting stability of the rubber pipe and the connector is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile air-conditioning systems, in particular to an exhaust hose of an automobile air-conditioning system. Background Art

[0002] Automobile air-conditioning pipelines are generally composed of aluminum tubes, air-conditioning hoses and other pipeline accessories, and automobile air-conditioning system exhaust hoses generally use air-conditioning hoses, and the air-conditioning hoses are composed of the following from the inside to the outside: shielding layer, rubber layer, braided layer, and rubber layer.

[0003] For example, the Chinese utility model patent with authorization announcement number CN209638605U discloses an exhaust hose for an automobile air conditioning system, specifically relating to the technical field of automobile air conditioning systems, comprising a hose and a joint. The hose comprises an integrally formed hose body and a connecting pipe, each of which is connected to a connecting pipe at each end of the hose body. The outer surface of the connecting pipe is provided with an external thread, and the connecting pipe and the joint are connected by a thread. The joint comprises a first interface and a second interface, the inner walls of the first interface and the second interface are provided with an internal thread, the first interface and the second interface are connected, the inner wall of the first interface is provided with a rubber layer, and an annular gap is left between the rubber layer and the inner wall of the first interface, the gap forming an insertion hole. When one end of the connecting pipe is inserted into the insertion hole, the rubber layer is in full contact with the inner wall of the connecting pipe. The rubber layer of the utility model is in full contact with the inner wall of the connecting pipe and is tightly attached to it, preventing air leakage, thereby solving the problem of air leakage caused by the poor elasticity of the shielding layer in the prior art.

[0004] The above patent locks the connector and the connecting pipe by means of threads, which can improve the convenience of assembling and connecting the connector and the connecting pipe compared to the traditional aluminum sleeve buckle connection method (such as the authorization announcement number: CN209278688U, the name is: A Chinese patent for an automobile air-conditioning hose assembly), and facilitates the subsequent replacement of the connector or the hose separately. However, after the connector and the connecting pipe in the above patent are threadedly tightened, there is a lack of additional fixing structure to limit and fix the connector and the connecting pipe. The threaded connection method is very likely to cause the threaded connector and the connecting pipe to loosen when the car is vibrating for a long time during driving, affecting the connection stability of the connector and the connecting pipe, thereby affecting the normal operation of the automobile air-conditioning system. There are certain defects that need to be improved. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to provide an exhaust hose for an automobile air-conditioning system.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: an automobile air-conditioning system exhaust hose, including a hose and a joint, both ends of the hose are fixedly connected with an externally threaded connecting pipe, one end of the joint is fixedly connected with an internally threaded connecting pipe, there is a gap between the internally threaded connecting pipe and the joint, and the gap constitutes an annular slot, the interior of the annular slot is fixedly connected with a cylindrical sealing ring, the externally threaded connecting pipe is inserted into the annular slot and threadedly connected to the internally threaded connecting pipe, the outer surface of the externally threaded connecting pipe near one end of the hose is fixedly sleeved with a limit plate, a rectangular limit hole is provided on the limit plate, a rectangular open groove 1 is provided on one end of the internally threaded connecting pipe near the hose, a rectangular open groove 2 is provided on the inner wall of the rectangular open groove 1 and passes through the outer wall of the internally threaded connecting pipe, and a limit component is also provided inside the rectangular open groove 1.

[0007] As a further description of the above technical solution: the cross section of the cylindrical sealing ring is "L"-shaped.

[0008] As a further description of the above technical solution: the internal threaded connecting pipe and the joint are integrally formed.

[0009] As a further description of the above technical solution: the inner wall of the externally threaded connecting pipe and the end away from the hose are both interference fit with the outer wall of the cylindrical sealing ring.

[0010] As a further description of the above technical solution: the limiting assembly includes a rectangular limiting rod movably installed inside a rectangular opening groove, one end of the rectangular limiting rod away from the rectangular limiting hole is fixedly connected to a spring, the other end of the spring is fixedly connected to the inner wall of the rectangular opening groove, and a pull rod is fixedly connected to the rectangular limiting rod.

[0011] As a further description of the above technical solution: the other end of the pull rod is located inside the second rectangular opening groove.

[0012] As a further description of the above technical solution: one end of the rectangular limiting rod away from the spring is movably embedded in the rectangular limiting hole.

[0013] The utility model has the following beneficial effects:

[0014] Compared with the existing technology, the exhaust hose of the automobile air-conditioning system can threadably connect the hose to the joint through the use of an externally threaded connecting pipe and an internally threaded connecting pipe, which is convenient for the subsequent replacement of the joint or the connecting pipe, reducing the cost of exhaust hose replacement and maintenance, and is simple and convenient to operate. Moreover, through the use of a limiting plate, a rectangular limiting hole and a limiting component, the internally threaded connecting pipe and the externally threaded connecting pipe after threaded connection can be further limited and fixed to ensure that the externally threaded connecting pipe and the internally threaded connecting pipe do not move relative to each other, and prevent the externally threaded connecting pipe and the internally threaded connecting pipe from loosening, thereby ensuring the connection stability of the hose and the joint.

[0015] Compared with the existing technology, the automobile air-conditioning system exhaust hose, by arranging the pull rod inside the second rectangular opening groove, can prevent the limit assembly from releasing the limit effect of the limit plate due to accidental touching of the pull rod, thereby ensuring the stability of the limit assembly in fixing the limit plate when the exhaust hose is in use.

[0016] 3. Compared with the existing technology, the automobile air conditioning system exhaust hose can seal the connection between the external threaded connecting pipe and the internal threaded connecting pipe through the provision of a cylindrical sealing ring, thereby ensuring the sealing of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a three-dimensional schematic diagram of the overall structure of an exhaust hose for an automobile air-conditioning system proposed by the present invention;

[0018] Figure 2 This is an exploded view of the structure of the joint and external threaded connecting pipe of the exhaust hose of the automobile air conditioning system proposed by the utility model;

[0019] Figure 3 This is a cross-sectional view of the structure of an internal threaded connecting pipe and an external threaded connecting pipe of an exhaust hose of an automobile air conditioning system proposed by the present invention;

[0020] Figure 4 for Figure 3 Enlarged view of point A in the middle.

[0021] Legend:

[0022] 1. Hose; 11. Externally threaded connecting pipe; 12. Limiting plate; 13. Rectangular limiting hole; 2. Connector; 21. Internally threaded connecting pipe; 22. Annular slot; 23. Cylindrical sealing ring; 24. Rectangular opening slot 1; 25. Rectangular opening slot 2; 26. Limiting assembly; 261. Rectangular limiting rod; 262. Spring; 263. Pull rod. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Reference Figure 1-4 The utility model provides an automobile air conditioning system exhaust hose: comprising a hose 1 and a joint 2, both ends of the hose 1 are fixedly connected with an external threaded connecting pipe 11, one end of the joint 2 is fixedly connected with an internal threaded connecting pipe 21, the internal threaded connecting pipe 21 and the joint 2 are integrally formed, there is a gap between the internal threaded connecting pipe 21 and the joint 2, the gap forms an annular slot 22, the inside of the annular slot 22 is fixedly connected with a cylindrical sealing ring 23, the inner wall of the external threaded connecting pipe 11 and the end away from the hose 1 are interference fit with the outer wall of the cylindrical sealing ring 23, the cylindrical The cross section of the shaped sealing ring 23 is "L"-shaped. The external threaded connecting pipe 11 is inserted into the annular slot 22 and is threadedly connected to the internal threaded connecting pipe 21. A limit plate 12 is fixedly sleeved on the outer surface of the external threaded connecting pipe 11 near the end of the hose 1. A rectangular limit hole 13 is opened on the limit plate 12. A rectangular opening groove 1 24 is opened at the end of the internal threaded connecting pipe 21 near the hose 1. A rectangular opening groove 2 25 is opened on the inner wall of the rectangular opening groove 14 and passes through the outer wall of the internal threaded connecting pipe 21. A limit assembly 26 is also provided inside the rectangular opening groove 1 24.

[0025] By using the external threaded connecting pipe 11 and the internal threaded connecting pipe 21 in conjunction with each other, the hose 1 can be threadedly connected to the joint 2, which is convenient for replacing the joint 2 or the connecting pipe separately at a later time, reducing the cost of replacing and maintaining the exhaust hose, and the operation is simple and convenient. By using the limiting plate 12, the rectangular limiting hole 13 and the limiting component 26 in conjunction with each other, the internal threaded connecting pipe 21 and the external threaded connecting pipe 11 after threaded connection can be further limited and fixed to ensure that the external threaded connecting pipe 11 and the internal threaded connecting pipe 21 do not move relative to each other, and prevent the external threaded connecting pipe 11 and the internal threaded connecting pipe 21 from loosening, thereby ensuring the connection stability of the hose 1 and the joint 2.

[0026] The limiting assembly 26 includes a rectangular limiting rod 261 movably installed inside the rectangular opening slot 1 24, and the end of the rectangular limiting rod 261 away from the rectangular limiting hole 13 is fixedly connected to a spring 262, and the other end of the spring 262 is fixedly connected to the inner wall of the rectangular opening slot 1 24, and a pull rod 263 is fixedly connected to the rectangular limiting rod 261, and the other end of the pull rod 263 is located inside the rectangular opening slot 2 25, and the end of the rectangular limiting rod 261 away from the spring 262 is movably embedded in the rectangular limiting hole 13.

[0027] Working principle: When the connector 2 and the hose 1 need to be connected, first align the external threaded connecting tube 11 on the hose 1 with the annular slot 22, and the outer wall of the external threaded connecting tube 11 abuts against the inner wall of the internal threaded connecting tube 21, then pull the pull rod 263 by your fingers to move, and drive the rectangular limit rod 261 to move completely to the inside of the rectangular opening slot 1 24, and the rectangular limit rod 261 squeezes the spring 262 to put it in a compressed state and store energy, then screw the limit plate 12, drive the internal threaded connecting tube 21 to rotate synchronously, so that the external threaded connecting tube 11 is embedded in the annular slot 22, and is threadedly connected to the internal threaded connecting tube 21, continue to screw the limit plate 12, and the limit plate 12 drives the rectangular limit hole 13 to rotate synchronously during the rotation process, until The inner wall of the externally threaded connecting tube 11 and the end away from the hose 1 are both in contact with the outer wall of the cylindrical sealing ring 23 (interference fit), and the rectangular limiting hole 13 is relative to the rectangular limiting rod 261. At this time, the pull rod 263 is loosened, and the elastic force of the spring 262 pushes the rectangular limiting rod 261 to move and embed into the rectangular limiting hole 13, thereby limiting and fixing the limiting disk 12, thereby ensuring that the externally threaded connecting tube 11 and the internally threaded connecting tube 21 do not move relative to each other, avoiding loosening of the externally threaded connecting tube 11 and the internally threaded connecting tube 21, thereby ensuring the connection stability of the hose 1 and the joint 2, and through the setting of the cylindrical sealing ring 23, the connection between the externally threaded connecting tube 11 and the internally threaded connecting tube 21 can be sealed to ensure the sealing of the connection.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An exhaust hose for an automobile air conditioning system, comprising a hose (1) and a connector (2), characterized in that: Both ends of the rubber hose (1) are fixedly connected to external threaded connecting pipes (11), and one end of the joint (2) is fixedly connected to an internal threaded connecting pipe (21). There is a gap between the internal threaded connecting pipe (21) and the joint (2), and the gap forms an annular slot (22). The inside of the annular slot (22) is fixedly connected to a cylindrical sealing ring (23). The external threaded connecting pipe (11) is inserted into the annular slot (22) and is threadedly connected to the internal threaded connecting pipe (21). The external threaded connecting pipe (21) is inserted into the annular slot (22) and is threadedly connected to the internal threaded connecting pipe (21). A limiting plate (12) is fixedly sleeved on the outer surface of the threaded connecting tube (11) near one end of the rubber hose (1), and a rectangular limiting hole (13) is provided on the limiting plate (12). A rectangular opening groove 1 (24) is provided on one end of the internal threaded connecting tube (21) near the rubber hose (1), and a rectangular opening groove 2 (25) penetrating the outer wall of the internal threaded connecting tube (21) is provided on the inner wall of the rectangular opening groove 1 (24), and a limiting component (26) is further provided inside the rectangular opening groove 1 (24).

2. The automobile air conditioning system exhaust hose according to claim 1, characterized in that: The cross section of the cylindrical sealing ring (23) is L-shaped.

3. The automobile air conditioning system exhaust hose according to claim 1, characterized in that: The internal threaded connecting pipe (21) and the joint (2) are integrally formed.

4. The automobile air conditioning system exhaust hose according to claim 1, characterized in that: The inner wall of the externally threaded connecting pipe (11) and the end away from the rubber hose (1) are both interference-fitted with the outer wall of the cylindrical sealing ring (23).

5. The automobile air conditioning system exhaust hose according to claim 1, characterized in that: The limiting assembly (26) includes a rectangular limiting rod (261) movably mounted inside the rectangular opening slot (24), one end of the rectangular limiting rod (261) away from the rectangular limiting hole (13) is fixedly connected to a spring (262), the other end of the spring (262) is fixedly connected to the inner wall of the rectangular opening slot (24), and a pull rod (263) is fixedly connected to the rectangular limiting rod (261).

6. The automobile air conditioning system exhaust hose according to claim 5, characterized in that: The other end of the pull rod (263) is located inside the second rectangular opening slot (25).

7. The automobile air conditioning system exhaust hose according to claim 5, characterized in that: One end of the rectangular limiting rod (261) away from the spring (262) is movably embedded in the rectangular limiting hole (13).

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