Waterproof sealing structure for automobile air conditioner

Abstract

This utility model discloses a waterproof sealing structure for automotive air conditioning, relating to the field of automotive parts. It aims to solve the problems of existing waterproof sealing structures being complex, costly, and inconvenient to assemble, while lacking anti-loosening designs for dynamic operating conditions. The technical solution adopted is as follows: a pipe pressure plate is expanded and connected to the pipe, and an expansion valve is installed on the pipe pressure plate; the pipe pressure plate is mounted on the housing, and a second sealing sponge is provided between the expansion valve and the housing; a third sealing sponge is wrapped around the outer wall of the heater hose, and the heater hose is mounted on the housing through the pipe pressure plate; a first sealing sponge is also provided on the housing to seal the heater hose and the expansion valve. Through the combination of the first, second, and third sealing sponges, the expansion valve, the connection between the pipe pressure plate and the housing, the space between the expansion valve and the housing, and the space between the heater hose and the housing are respectively wrapped and sealed, forming a multi-layered waterproof barrier to prevent water from entering the vehicle interior from the outside through the outer perimeter of the air conditioning unit.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically a waterproof sealing structure for automotive air conditioning. Background Technology

[0002] In automotive air conditioning systems, the reliability of the waterproof sealing structure directly affects air conditioning performance and the safety of in-vehicle electronic equipment. Existing technologies offer various solutions to the sealing problem of expansion valves, pipes, and housings, but they still have the following shortcomings: existing solutions either rely on a single sealing element (such as a sealing sponge) or employ a complex structure of multiple layers of housing + sealant (such as the leak-proof installation structure for an automotive air conditioning expansion valve disclosed in Chinese patent CN202020549805.2). The former is prone to failure, while the latter is costly and inconvenient to assemble. Vibrations during vehicle operation can cause gaps between the sealing elements (such as sponges or rubber rings) and components, and existing solutions lack anti-loosening designs for dynamic operating conditions. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a waterproof sealing structure for automotive air conditioning, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model discloses a waterproof sealing structure for automotive air conditioning. The technical solution includes a heater water pipe, a pipeline, and an expansion valve. A pipeline pressure plate is expanded onto the pipeline, and the expansion valve is installed on the pipeline pressure plate. The expansion valve is connected to the pipeline.

[0005] The pipeline pressure plate is installed on the housing, and a second sealing sponge is provided between the expansion valve and the housing;

[0006] The heating water pipe is equipped with a third sealing sponge, and the heating water pipe is installed on the housing through a water pipe pressure plate;

[0007] The outer side of the housing is also provided with a first sealing sponge to seal the heater water pipe and the expansion valve. The first sealing sponge, the second sealing sponge and the third sealing sponge are combined to wrap and seal the connection between the expansion valve, the pipe pressure plate and the housing, the expansion valve and the housing, and the heater water pipe and the housing, forming a multi-layer waterproof barrier to prevent water from entering the vehicle from the outside through the outer perimeter of the air conditioning unit.

[0008] As a preferred embodiment of the present invention, the housing further includes an upper housing and a lower housing, and the pipeline pressure plate is installed between the upper housing and the lower housing.

[0009] As a preferred technical solution of this utility model, the heating water pipe and the third sealing sponge are fitted with an interference fit; the shell and the second sealing sponge are fitted with an interference fit. By using an interference fit assembly relationship between the sealing sponge and the heating water pipe and the shell, the elastic deformation of the material is used to fill the gap, ensuring that close contact is maintained under dynamic working conditions (such as vehicle vibration), thereby improving the sealing reliability.

[0010] As a preferred embodiment of this utility model, a groove is provided on the facing surface of the first sealing sponge and the shell, and the groove corresponds to the position and size of the second sealing sponge and the third sealing sponge.

[0011] As a preferred embodiment of this invention, the first sealing sponge and the shell are further provided with a skin on their opposite sides.

[0012] As a preferred embodiment of this invention, the second sealing sponge and the third sealing sponge are bonded to the facing surfaces of the first sealing sponge using double-sided adhesive.

[0013] Compared with the prior art, the beneficial effects of this utility model are: by setting a first sealing sponge, a second sealing sponge and a third sealing sponge composite, the expansion valve, the connection between the pipe pressure plate and the housing, the expansion valve and the housing, and the heater water pipe and the housing are respectively wrapped and sealed, forming a multi-layer waterproof barrier to prevent water from entering the vehicle from the outside through the outer periphery of the air conditioning unit.

[0014] By employing an interference fit between the sealing sponge and the heater pipe and housing, and utilizing the elastic deformation of the material to fill the gaps, a tight contact is maintained even under dynamic operating conditions (such as vehicle vibration), thereby improving sealing reliability. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is an exploded view of the present invention;

[0017] Figure 3 This is a schematic diagram of the installation of the pipeline and heating water pipe of this utility model;

[0018] Figure 4 This is a schematic diagram of the sealing sponge assembly of this utility model. Figure 1 ;

[0019] Figure 5 This is a schematic diagram of the sealing sponge assembly of this utility model. Figure 2 ;

[0020] Figure 6This is a schematic diagram of the three-group sealing sponge structure of this utility model.

[0021] In the diagram: 1. Upper housing; 2. Lower housing; 3. First sealing sponge; 4. Expansion valve; 5. Heating water pipe; 6. Second sealing sponge; 7. Third sealing sponge; 8. Water pipe pressure plate; 9. Pipe pressure plate; 10. Groove. Detailed Implementation

[0022] 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. Example 1

[0023] like Figures 1 to 6 As shown, this utility model discloses a waterproof sealing structure for automotive air conditioning. The technical solution includes a heater water pipe 5, a pipeline, and an expansion valve 4. A pipeline pressure plate 9 is expanded and connected to the pipeline. The expansion valve 4 is installed on the pipeline pressure plate 9 and is connected to the pipeline. The pipeline pressure plate 9 is installed on the housing, and a second sealing sponge 6 is provided between the expansion valve 4 and the housing.

[0024] like Figure 3 As shown, the housing also includes an upper housing 1 and a lower housing 2, which are fixed together by screws. The pipeline pressure plate 9 is installed between the upper housing 1 and the lower housing 2.

[0025] like Figure 4 As shown, after the pipeline pressure plate 9 and the pipeline are expanded, the expansion valve 4 is fixed to the pipeline pressure plate 9 with two bolts. After the fifth sealing sponge is pasted around the pipeline pressure plate 9, it is assembled between the upper housing 1 and the lower housing 2.

[0026] The heating water pipe 5 is provided with a third sealing sponge 7, and the outer wall of the heating water pipe 5 is also wrapped with a fourth sealing sponge. The fourth sealing sponge is used to seal the heating water pipe 5 between the water pipe pressure plate 8 and the housing. The heating water pipe 5 is installed on the housing through the water pipe pressure plate 8.

[0027] like Figure 2 and Figure 5 As shown, the warm air water pipe 5 is wrapped with the fourth sealing sponge and then assembled between the upper housing 1 and the lower housing 2. The fourth sealing sponge is compressed by the water pipe pressure plate 8 and then fixed to the upper housing 1 with screws.

[0028] The outer side of the housing is also provided with a first sealing sponge 3 to seal the heating water pipe 5 and the expansion valve 4, and the first sealing sponge 3 is in contact with the housing.

[0029] The heating water pipe 5 and the third sealing sponge 7 are fitted with an interference fit; the housing and the second sealing sponge 6 are fitted with an interference fit.

[0030] The first sealing sponge 3 has a groove 10 on the facing surface of the housing. The groove 10 corresponds to the second sealing sponge 6 and the third sealing sponge 7 in position and is adapted in size.

[0031] The first sealing sponge 3 and the shell have a skin on their opposite sides to increase waterproof performance.

[0032] like Figure 6 As shown, the second sealing sponge 6 and the third sealing sponge 7 are bonded to the facing surfaces of the first sealing sponge 3 with double-sided adhesive.

[0033] When the front of the sealing sponge is compressed and deformed, and the rear sealing sponge is compressed and deformed by the body sheet metal after assembly, especially after deformation at the joint with the expansion valve 4 and the heater hose 5, the second sealing sponge 6 and the third sealing sponge 7 are less affected by compression and deformation because there is no glue on their sides and back. This ensures that they can cooperate with the expansion valve 4 and the heater hose 5, and water cannot seep backward from this point.

[0034] The split-type sealing sponge design offers better waterproof sealing and lower cost compared to traditional one-piece molded foam sponges.

[0035] The circuits and mechanical connections involved in this utility model are common practices used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments. They are common knowledge.

[0036] Components not described in detail in this article are existing technologies.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A waterproof sealing structure for automotive air conditioning, characterized in that: It includes a heating water pipe (5), a pipeline and an expansion valve (4), a pipeline pressure plate (9) is expanded on the pipeline, the expansion valve (4) is installed on the pipeline pressure plate (9) and the expansion valve (4) is connected to the pipeline; The pipeline pressure plate (9) is installed on the housing, and a second sealing sponge (6) is provided between the expansion valve (4) and the housing. The heating water pipe (5) is provided with a third sealing sponge (7), and the heating water pipe (5) is installed on the housing through a water pipe pressure plate (8); The outer side of the housing is also provided with a first sealing sponge (3) to seal the heating water pipe (5) and the expansion valve (4).

2. The waterproof sealing structure for automotive air conditioning according to claim 1, characterized in that: The housing also includes an upper housing (1) and a lower housing (2), and the pipeline pressure plate (9) is installed between the upper housing (1) and the lower housing (2).

3. The waterproof sealing structure for automotive air conditioning according to claim 1, characterized in that: The heating water pipe (5) and the third sealing sponge (7) are fitted with an interference fit; the shell and the second sealing sponge (6) are fitted with an interference fit.

4. The waterproof sealing structure for automotive air conditioning according to claim 1, characterized in that: The first sealing sponge (3) has a groove (10) on the facing surface of the shell. The groove (10) corresponds to the second sealing sponge (6) and the third sealing sponge (7) in position and is adapted in size.

5. A waterproof sealing structure for automotive air conditioning according to claim 1, characterized in that: The first sealing sponge (3) and the shell are also provided with a skin on their opposite sides.

6. The waterproof sealing structure for automotive air conditioning according to claim 1, characterized in that: The second sealing sponge (6) and the third sealing sponge (7) are bonded to the facing surfaces of the first sealing sponge (3) with double-sided adhesive.

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