Automobile air conditioner box sealing assembly and automobile air conditioner

Abstract

The utility model relates to the technical field of automobile air conditioner, especially to a kind of automobile air conditioner box sealing assembly and automobile air conditioner.The automobile air conditioner box sealing assembly includes adapter support, second sealing pad, pressing plate and fastener.The adapter support includes support body and first sealing pad, first sealing pad is integrally formed with support body, first sealing pad is equipped with first sealing hole and second sealing hole, first sealing hole is configured to be sleeved on the expansion valve pipeline of automobile air conditioner box, second sealing hole is configured to be sleeved on the warm core pipeline of automobile air conditioner box;First sealing hole is interference fit with expansion valve pipeline, and second sealing hole is interference fit with warm core pipeline.Second sealing pad cover is arranged on adapter support, pressing plate is arranged on the side of second sealing pad away from adapter support, and fastener is arranged on pressing plate.The automobile air conditioner box sealing assembly can improve the sealing performance of automobile air conditioner box, reduce or avoid water leakage, and reduce safety hazards.

Description

Technical Field

[0001] This utility model relates to the field of automotive air conditioning technology, and in particular to an automotive air conditioning box sealing component and an automotive air conditioner. Background Technology

[0002] As a core component ensuring in-vehicle comfort, the stable operation of the automotive air conditioning system directly impacts the user experience and reliability of the vehicle. The air conditioning unit, a key component of the system, integrates several core functional parts, including an expansion valve and a heater core. The expansion valve, as a crucial element controlling refrigerant flow, has a particularly important structural design regarding its installation location. Because the air conditioning unit generates condensation during operation due to heat exchange, and given the complex driving environment, including rain, wading, and water accumulation after car washes, the expansion valve area must possess reliable waterproofing to prevent moisture from seeping in and flowing into the vehicle's interior through pipes or structural gaps. This would avoid damaging electronic components and interior trim, or affecting the passenger experience.

[0003] However, the expansion valve of the existing automotive air conditioning unit lacks an effective sealing structure and has weak waterproofing capabilities. Condensate generated inside the air conditioning unit or water seeping in from the outside can easily flow directly into the car through the expansion valve pipe or surrounding gaps, causing water leakage problems inside the car and increasing the safety hazards of the vehicle.

[0004] Therefore, there is an urgent need to design a sealing component for an automotive air conditioning unit and an automotive air conditioner to solve the above technical problems. Utility Model Content

[0005] The purpose of this utility model is to provide a sealing component for an automotive air conditioning unit and an automotive air conditioner, which can improve the sealing performance of the automotive air conditioning unit, reduce or avoid moisture leakage, and reduce safety hazards.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] On the one hand, this utility model provides a sealing assembly for an automotive air conditioning unit, comprising:

[0008] An adapter bracket includes a bracket body and a first sealing gasket, the first sealing gasket being integrally formed with the bracket body. The first sealing gasket has a first sealing hole and a second sealing hole. The first sealing hole is configured to be sleeved on the expansion valve pipe of the automotive air conditioning unit, and the second sealing hole is configured to be sleeved on the heating core pipe of the automotive air conditioning unit. The diameter of the first sealing hole is smaller than the outer diameter of the expansion valve pipe, and the diameter of the second sealing hole is smaller than the outer diameter of the heating core pipe, so that the first sealing hole and the expansion valve pipe are interference-fitted, and the second sealing hole and the heating core pipe are interference-fitted.

[0009] The second sealing gasket is mounted on the adapter bracket;

[0010] A pressure plate is disposed on the side of the second sealing gasket away from the adapter bracket;

[0011] A fastener disposed on the pressure plate and configured to press the pressure plate against the second sealing gasket.

[0012] As an optional technical solution for a sealing component of an automotive air conditioning unit, the first sealing gasket is provided with a first groove and a second groove, the first sealing hole is disposed in the first groove, the second sealing hole is disposed in the second groove, and both the first groove and the second groove are recessed toward the fireproof sheet metal side of the automotive air conditioning unit.

[0013] As an optional technical solution for sealing components of automotive air conditioning boxes, the depth of the first groove is greater than the depth of the second groove.

[0014] As an optional technical solution for a sealing assembly of an automotive air conditioning unit, a first extension is provided on the periphery of the first sealing hole, and a second extension is provided on the periphery of the second sealing hole. Both the first extension and the second extension extend along the side away from the fireproof sheet metal of the automotive air conditioning unit. The first extension is interference-fitted with the expansion valve pipeline, and the second extension is interference-fitted with the heating core pipeline.

[0015] As an optional technical solution for a sealing component of an automotive air conditioning unit, the bracket body is provided with a connecting post, both ends of which penetrate the bracket body. A first connecting hole is provided on the second sealing gasket, and a second connecting hole is provided on the pressure plate. One end of the connecting post passes through the first and second connecting holes, and the other end of the connecting post is used for connection with the fireproof sheet metal of the automotive air conditioning unit. The fastener is sleeved on the end of the connecting post that passes through the second connecting hole.

[0016] As an optional technical solution for a sealing component of an automotive air conditioning unit, multiple connecting posts and fasteners are provided, and the connecting posts and fasteners are provided in a one-to-one correspondence; the multiple connecting posts are provided at equal intervals.

[0017] As an optional technical solution for a sealing assembly of an automotive air conditioning unit, the connecting post includes a connecting part and a limiting part. The limiting part is disposed on the side of the bracket body facing the second sealing gasket, and the connecting part is disposed on the limiting part.

[0018] The diameter of the connecting part is smaller than the diameter of the first connecting hole and the diameter of the second connecting hole, the diameter of the limiting part is larger than the diameter of the first connecting hole and the diameter of the second connecting hole, one end of the connecting part passes through the first connecting hole and the second connecting hole, and the fastener is sleeved on the connecting part.

[0019] As an optional technical solution for the sealing assembly of an automotive air conditioning unit, the second sealing gasket has a first through hole and a second through hole, the first through hole being configured to pass through the expansion valve pipeline, and the second through hole being configured to pass through the heating core pipeline.

[0020] As an optional technical solution for automotive air conditioning unit sealing components, the second sealing gasket is further provided with a skirt on its periphery, and the skirt covers the adapter bracket.

[0021] On the other hand, this utility model provides an automotive air conditioner, the automotive air conditioner comprising:

[0022] Firewall sheet metal, wherein an accommodating cavity is formed inside the firewall sheet metal;

[0023] An expansion valve is disposed inside the receiving cavity, and the expansion valve is connected to at least one expansion valve pipeline that extends out of the fire wall sheet metal;

[0024] A heating element is disposed inside the receiving cavity, and the heating element is connected to at least one heating element pipe that extends out of the fireproof sheet metal;

[0025] As described above, in the automotive air conditioning unit sealing assembly, both the expansion valve pipeline and the heating core pipeline are interference-fitted with the automotive air conditioning unit sealing assembly.

[0026] The beneficial effects of this utility model include at least the following:

[0027] This utility model provides a sealing assembly for an automotive air conditioning unit, comprising an adapter bracket, a second sealing gasket, a pressure plate, and fasteners. The adapter bracket includes a bracket body and a first sealing gasket, which is integrally formed with the bracket body. The first sealing gasket has a first sealing hole and a second sealing hole. The first sealing hole is configured to fit onto the expansion valve pipe of the automotive air conditioning unit, and the second sealing hole is configured to fit onto the heating element pipe of the automotive air conditioning unit. The diameter of the first sealing hole is smaller than the outer diameter of the expansion valve pipe, and the diameter of the second sealing hole is smaller than the outer diameter of the heating element pipe, so that the first sealing hole and the expansion valve pipe, and the second sealing hole and the heating element pipe, are interference-fitted. The second sealing gasket covers the adapter bracket, the pressure plate is located on the side of the second sealing gasket away from the adapter bracket, and the fasteners are located on the pressure plate, configured to press the pressure plate tightly onto the second sealing gasket.

[0028] The first sealing gasket and the bracket body are integrally molded, avoiding the leakage risks caused by assembly gaps in traditional split structures. The first and second sealing holes on the first sealing gasket are interference-fitted with the expansion valve pipe and the heating core pipe, respectively. This allows the first sealing gasket to tightly wrap around the outer walls of the expansion valve pipe and the heating core pipe through elastic deformation, thus preventing moisture from seeping or leaking through the gaps between these pipes. Simultaneously, the second sealing gasket is mounted on the adapter bracket, covering the perimeter gap between the adapter bracket and the firewall sheet metal of the automotive air conditioning unit. After the pressure plate is tightened with fasteners, the second sealing gasket is firmly pressed between the adapter bracket and the pressure plate, further preventing moisture from seeping in through the perimeter gaps of the adapter bracket. This avoids the risk of leakage due to single-seal failure, improves sealing performance, and reduces safety hazards.

[0029] This invention provides an automotive air conditioner that can effectively prevent moisture from seeping into the car interior, reduce safety hazards, and improve the passenger experience. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of this utility model and these drawings without creative effort.

[0031] Figure 1 This is an exploded view of the automotive air conditioning unit sealing assembly provided in this embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the structure of the automotive air conditioning box sealing assembly provided in this embodiment of the present invention assembled on the sheet metal of the firewall;

[0033] Figure 3 yes Figure 2 A cross-sectional view along the AA direction;

[0034] Figure 4 This is a schematic diagram of the structure of the adapter bracket provided in this embodiment of the utility model;

[0035] Figure 5 This is a cross-sectional view of the interference fit between the first sealing gasket and the expansion valve pipeline provided in this embodiment of the utility model;

[0036] Figure 6 This is a cross-sectional view of the interference fit between the first sealing gasket and the heating core pipeline provided in this embodiment of the utility model.

[0037] Figure Labels

[0038] 100. Firewall sheet metal; 110. Expansion valve piping; 120. Heating core piping;

[0039] 10. Adapter bracket; 11. Bracket body; 111. Connecting column; 112. Connecting part; 113. Limiting part;

[0040] 12. First sealing gasket; 121. First groove; 122. Second groove; 123. First sealing hole; 124. Second sealing hole; 125. First extension; 126. Second extension;

[0041] 20. Second sealing gasket; 21. First connecting hole; 22. First through hole; 23. Second through hole; 24. Skirt portion;

[0042] 30. Pressure plate; 31. Second connecting hole;

[0043] 40. Fasteners. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0046] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0047] In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are used only for the convenience of describing this utility model and for simplifying the description, 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. Furthermore, the terms "first," "second," and "third," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0048] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0051] This embodiment provides a sealing component for an automotive air conditioning unit and an automotive air conditioner, which can improve the sealing performance of the automotive air conditioning unit, reduce or avoid moisture leakage, and reduce safety hazards.

[0052] like Figures 1-6As shown, the automotive air conditioning unit sealing assembly mainly includes an adapter bracket 10, a second sealing gasket 20, a pressure plate 30, and fasteners 40. The adapter bracket 10 includes a bracket body 11 and a first sealing gasket 12. The first sealing gasket 12 is integrally formed with the bracket body 11. The first sealing gasket 12 has a first sealing hole 123 and a second sealing hole 124. The first sealing hole 123 is configured to fit onto the expansion valve pipe 110 of the automotive air conditioning unit, and the second sealing hole 124 is configured to fit onto the heating core pipe 120 of the automotive air conditioning unit. The diameter of the first sealing hole 123 is smaller than the outer diameter of the expansion valve pipe 110, and the diameter of the second sealing hole 124 is smaller than the outer diameter of the heating core pipe 120, so that the first sealing hole 123 and the expansion valve pipe 110 are interference-fitted, and the second sealing hole 124 and the heating core pipe 120 are interference-fitted. The second sealing gasket 20 is covered on the adapter bracket 10, the pressure plate 30 is disposed on the side of the second sealing gasket 20 away from the adapter bracket 10, and the fastener 40 is disposed on the pressure plate 30 and is configured to press the pressure plate 30 onto the second sealing gasket 20.

[0053] Based on the above design, in this embodiment, the first sealing gasket 12 and the bracket body 11 are integrally molded to avoid the water leakage risk caused by the assembly gap of the traditional split structure. The first sealing hole 123 and the second sealing hole 124 opened on the first sealing gasket 12 are respectively interference fit with the expansion valve pipeline 110 and the heating core pipeline 120. This allows the first sealing gasket 12 to tightly wrap the outer wall of the expansion valve pipeline 110 and the outer wall of the heating core pipeline 120 through elastic deformation, thereby preventing water from seeping and leaking from the gap between the first sealing gasket 12 and the outer wall of the expansion valve pipeline 110 and the outer wall of the heating core pipeline 120. Meanwhile, the second sealing gasket 20 is placed on the adapter bracket 10, so that the second sealing gasket 20 can cover the periphery gap between the adapter bracket 10 and the firewall sheet metal 100 of the car air conditioning box. After the pressure plate 30 is pressed by the fastener 40, the second sealing gasket 20 is firmly pressed between the adapter bracket 10 and the pressure plate 30, further preventing moisture from seeping in from the periphery gap of the adapter bracket 10, avoiding the risk of water leakage caused by the failure of a single seal, improving the sealing performance, and reducing safety hazards.

[0054] In this embodiment, the first sealing gasket 12 is integrally formed with the bracket body 11, reducing the assembly steps of the independent first sealing gasket 12 and avoiding sealing failure caused by displacement or misalignment of the first sealing gasket 12.

[0055] The automotive air conditioning unit sealing assembly in this embodiment has a simple structure. During assembly, it can be fixed by simply pressing it with fastener 40, which reduces the assembly difficulty and reduces the sealing gap caused by assembly errors of multiple parts.

[0056] In some alternative embodiments, the bracket body 11 is made of automotive-grade weather-resistant plastic, such as PP or ABS. The first sealing gasket 12 can be made of EPDM rubber, which has good elasticity and is resistant to high and low temperatures; the second sealing gasket 20 can be made of closed-cell polyurethane foam.

[0057] In some optional embodiments, the integral molding process of the first sealing gasket 12 and the bracket body 11 is a two-color molding process, that is, the bracket body 11 is injection molded first, and then the first sealing gasket 12 is injection molded in the same mold to ensure that there is no gap at the joint surface of the two.

[0058] In some alternative embodiments, the fastener 40 may be a nylon lock nut or a galvanized steel bolt. The pressure plate 30 may be made of PA66 material or a 0.8mm thick galvanized steel sheet.

[0059] like Figure 4 As shown, in this embodiment, the first sealing gasket 12 is provided with a first groove 121 and a second groove 122, the first sealing hole 123 is provided in the first groove 121, and the second sealing hole 124 is provided in the second groove 122. The first groove 121 and the second groove 122 are both recessed toward the side of the firewall sheet metal 100 of the car air conditioning box.

[0060] The recessed first groove 121 and second groove 122 form a guide to fit against the surface of the firewall sheet metal 100, ensuring that the peripheral areas of the first sealing gasket 12's first groove 121 and second groove 122 are tightly pressed against the firewall sheet metal 100, increasing the effective contact area between the first sealing gasket 12 and the firewall sheet metal 100. Simultaneously, the structure of the first groove 121 and second groove 122 can form "micro-cavities," allowing the first groove 121 and second groove 122 to temporarily contain even small amounts of condensate dripping from the surface of the firewall sheet metal 100, further reducing the probability of moisture penetration.

[0061] In automotive air conditioning units, the expansion valve pipe 110 and the heating core pipe 120 operate under fundamentally different conditions and have different risks of leakage. The expansion valve pipe 110, used to transport refrigerant, is prone to producing large amounts of condensate; if the seal fails, it can not only leak water but also refrigerant. The heating core pipe 120, transporting engine coolant, operates at a relatively stable temperature, produces less condensate, and therefore has lower sealing requirements than the expansion valve pipe 110. Therefore, in this embodiment, the depth of the first groove 121 is greater than the depth of the second groove 122. The deeper first groove 121 provides greater contact pressure, allowing the first sealing gasket 12 around the expansion valve pipe 110 to fit more tightly against the firewall sheet metal 100, thereby specifically enhancing the sealing strength at the expansion valve pipe 110 and preventing sealing failure in high-risk areas. Meanwhile, the second groove 122 at the heating core pipe 120 is shallower, reducing the amount of material used for the first sealing gasket 12 while still meeting basic sealing requirements, thus lowering costs.

[0062] If the first groove 121 and the second groove 122 have the same depth and are both designed according to the high requirements of the expansion valve pipeline 110, it will result in redundant sealing gasket material at the heating core pipeline 120, increasing costs; if they are both designed according to the sealing requirements of the heating core pipeline 120, the sealing at the expansion valve pipeline 110 will be insufficient.

[0063] For example, the depth of the first groove 121 can be set to 3mm-8mm, and the depth of the second groove 122 can be set to 1mm-5mm.

[0064] like Figure 4 As shown, a first extension 125 is provided on the periphery of the first sealing hole 123, and a second extension 126 is provided on the periphery of the second sealing hole 124. Both the first extension 125 and the second extension 126 extend along the side of the firewall sheet metal 100 away from the vehicle air conditioning unit. The first extension 125 is interference-fitted with the expansion valve pipeline 110, and the second extension 126 is interference-fitted with the heating core pipeline 120.

[0065] The provision of the first extension 125 and the second extension 126 increases the sealing path for the expansion valve pipeline 110 and the heating core pipeline 120, thereby improving waterproof reliability. The first extension 125 extends axially along the first sealing hole 123, and the second extension 126 extends axially along the second sealing hole 124. The tight fit between the first extension 125 and the expansion valve pipeline 110, and the tight fit between the second extension 126 and the heating core pipeline 120, limits the radial swing amplitude of the expansion valve pipeline 110 and the heating core pipeline 120, thereby enhancing the support stability of the expansion valve pipeline 110 and the heating core pipeline 120.

[0066] Optionally, the lengths of both the first extension 125 and the second extension 126 are set to 1mm-3mm.

[0067] like Figures 2-4 As shown, in this embodiment, the bracket body 11 is provided with a connecting post 111. Both ends of the connecting post 111 penetrate the bracket body 11. The second sealing gasket 20 is provided with a first connecting hole 21, and the pressure plate 30 is provided with a second connecting hole 31. One end of the connecting post 111 passes through the first connecting hole 21 and the second connecting hole 31. The other end of the connecting post 111 is used to connect with the firewall sheet metal 100 of the car air conditioning box. The fastener 40 is sleeved on the end of the connecting post 111 that passes through the second connecting hole 31.

[0068] The connecting column 111 connects and fixes the firewall sheet metal 100, the adapter bracket 10, the second sealing gasket 20, and the pressure plate 30 in series to form an integral structure, which greatly improves the vibration resistance of the automotive air conditioning box sealing assembly.

[0069] Optionally, multiple connecting posts 111 and fasteners 40 are provided, and each connecting post 111 and fastener 40 is configured in a one-to-one correspondence; the multiple connecting posts 111 are arranged at equal intervals. The multiple connecting posts 111 and fasteners 40 are arranged at equal intervals to evenly distribute the pressure, ensuring that the pressure plate 30 exerts a uniform pressure on the second sealing gasket 20, avoiding insufficient local pressure that could lead to sealing failure, and improving the overall sealing performance and reliability of the automotive air conditioning unit sealing assembly.

[0070] For example, the number, position and size of the connecting posts 111 and the fasteners 40 need to be determined according to the size and sealing requirements of the adapter bracket 10. For example, four connecting posts 111 are set and distributed at equal intervals on the bracket body 11 to ensure uniform compression.

[0071] For example, the connecting post 111 can be integrally injection molded with the bracket body 11, and the connecting post 111 and the firewall sheet metal 100 are connected by a snap-fit ​​method. For example, the end of the connecting post 111 is provided with a barb, and the corresponding position of the firewall sheet metal 100 is provided with a slot, and the barb is inserted into the slot to achieve quick assembly and fixation.

[0072] like Figure 4 As shown, the connecting post 111 in this embodiment includes a connecting portion 112 and a limiting portion 113. The limiting portion 113 is disposed on the side of the bracket body 11 facing the second sealing gasket 20, and the connecting portion 112 is disposed on the limiting portion 113. The diameter of the connecting portion 112 is smaller than the diameter of the first connecting hole 21 and the diameter of the second connecting hole 31, and the diameter of the limiting portion 113 is larger than the diameter of the first connecting hole 21 and the diameter of the second connecting hole 31. One end of the connecting portion 112 passes through the first connecting hole 21 and the second connecting hole 31, and the fastener 40 is sleeved on the connecting portion 112.

[0073] Overfitting will cause the second sealing gasket 20 to be excessively compressed and lose its elasticity; underfitting will cause insufficient clamping force on the second sealing gasket 20, resulting in gaps. In this embodiment, the diameter of the limiting part 113 is larger than the diameter of the first connecting hole 21 and the second connecting hole 31, which can directly prevent the second sealing gasket 20 and the pressure plate 30 from being overfitted. The limiting part 113 is equivalent to the assembly reference surface. During assembly, the second sealing gasket 20 and the pressure plate 30 only need to be fitted into the connecting part 112 and pressed against the limiting part 113 to complete the positioning. No additional measurement is required, which improves the assembly efficiency.

[0074] like Figure 1 As shown, the second sealing gasket 20 has a first through hole 22 and a second through hole 23. The first through hole 22 is configured to pass through the expansion valve pipe 110, and the second through hole 23 is configured to pass through the heating core pipe 120. This way, the second sealing gasket 20 does not need to be squeezed during assembly, thus avoiding damage to the second sealing gasket 20.

[0075] Preferably, the first through hole 22 is interference-fitted with the expansion valve pipe 110, and the second through hole 23 is interference-fitted with the heating core pipe 120, preventing moisture from seeping through the gap between the second sealing gasket 20 and the expansion valve pipe 110 and the heating core pipe 120, thereby improving the sealing effect.

[0076] Furthermore, such as Figure 1 As shown, the second sealing gasket 20 also has a skirt 24 around its periphery, which covers the adapter bracket 10. The skirt 24 covers the periphery of the adapter bracket 10, thereby sealing the gaps around the adapter bracket 10. The skirt 24 can achieve elastic deformation after being tightened by the fastener 40, so as to fit against the surface of the firewall sheet metal 100 of the air conditioning unit, further preventing moisture from seeping in from the side gap between the adapter bracket 10 and the firewall sheet metal 100, thereby blocking the leakage path and improving the sealing performance.

[0077] Furthermore, the environment inside a car engine compartment is complex (e.g., dust, oil, high-temperature gases). If the periphery of the adapter bracket 10 is exposed, it is easily covered by dust or corroded by oil, thus accelerating the aging of the first sealing gasket 12. This embodiment, through the skirt portion 24, can prevent dust and oil from adhering to the periphery of the adapter bracket 10 and the first sealing gasket 12, keeping the sealing surface clean. It also reduces the direct blowing of high-temperature gases onto the adapter bracket 10, slowing down the aging rate of the first sealing gasket 12 and extending its service life.

[0078] For example, the skirt portion 24 and the second sealing gasket 20 are integrally molded to avoid the problem of detachment caused by adhesion.

[0079] This embodiment also provides an automotive air conditioner, which includes a firewall sheet metal 100, an expansion valve, a heater core, and an automotive air conditioning unit sealing assembly. The firewall sheet metal 100 has an internal receiving cavity, and the expansion valve is disposed within the receiving cavity. The expansion valve is connected to at least one expansion valve pipe 110 extending out of the firewall sheet metal 100. The heater core is disposed within the receiving cavity, and the heater core is connected to at least one heater core pipe 120 extending out of the firewall sheet metal 100. Both the expansion valve pipe 110 and the heater core pipe 120 are interference-fitted with the automotive air conditioning unit sealing assembly.

[0080] The installation of the automotive air conditioning unit sealing assembly enables the expansion valve pipe 110 to form an interference fit seal with the first sealing hole 123, and the heating core pipe 120 to form an interference fit seal with the second sealing hole 124. This effectively prevents moisture from seeping into the car interior, ensuring the safety of electronic components and interior materials, reducing safety hazards, and improving the passenger riding experience.

[0081] Obviously, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments. Many other equivalent embodiments may be included without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

[0082] Note that in the description of this specification, the references to terms such as "some embodiments," "other embodiments," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A sealing assembly for an automotive air conditioning unit, characterized in that, include: The adapter bracket (10) includes a bracket body (11) and a first sealing gasket (12). The first sealing gasket (12) is integrally formed with the bracket body (11). The first sealing gasket (12) has a first sealing hole (123) and a second sealing hole (124). The first sealing hole (123) is configured to be sleeved on the expansion valve pipe (110) of the car air conditioning unit, and the second sealing hole (124) is configured to be sleeved on the heating core pipe (120) of the car air conditioning unit. The diameter of the first sealing hole (123) is smaller than the outer diameter of the expansion valve pipe (110), and the diameter of the second sealing hole (124) is smaller than the outer diameter of the heating core pipe (120), so that the first sealing hole (123) is interference-fitted with the expansion valve pipe (110), and the second sealing hole (124) is interference-fitted with the heating core pipe (120). The second sealing gasket (20) is mounted on the adapter bracket (10); Pressure plate (30), the pressure plate (30) is disposed on the side of the second sealing gasket (20) away from the adapter bracket (10); Fastener (40) is disposed on the pressure plate (30) and is configured to press the pressure plate (30) against the second sealing gasket (20).

2. The automotive air conditioning unit sealing assembly according to claim 1, characterized in that, The first sealing gasket (12) is provided with a first groove (121) and a second groove (122). The first sealing hole (123) is provided in the first groove (121) and the second sealing hole (124) is provided in the second groove (122). The first groove (121) and the second groove (122) are both recessed toward the side of the firewall sheet metal (100) of the car air conditioning box.

3. The automotive air conditioning unit sealing assembly according to claim 2, characterized in that, The depth of the first groove (121) is greater than the depth of the second groove (122).

4. The automotive air conditioning unit sealing assembly according to claim 2, characterized in that, The first sealing hole (123) is provided with a first extension (125) on its periphery, and the second sealing hole (124) is provided with a second extension (126) on its periphery. Both the first extension (125) and the second extension (126) extend along the side away from the fireproof sheet metal (100) of the car air conditioning box. The first extension (125) is interference-fitted with the expansion valve pipeline (110), and the second extension (126) is interference-fitted with the heating core pipeline (120).

5. The automotive air conditioning unit sealing assembly according to claim 1, characterized in that, The bracket body (11) is provided with a connecting post (111), both ends of the connecting post (111) penetrate the bracket body (11), the second sealing gasket (20) is provided with a first connecting hole (21), the pressure plate (30) is provided with a second connecting hole (31), one end of the connecting post (111) passes through the first connecting hole (21) and the second connecting hole (31), the other end of the connecting post (111) is used to connect with the firewall sheet metal (100) of the car air conditioning box, and the fastener (40) is sleeved on the end of the connecting post (111) that passes through the second connecting hole (31).

6. The automotive air conditioning unit sealing assembly according to claim 5, characterized in that, The connecting post (111) and the fastener (40) are both provided in multiples, and the connecting post (111) and the fastener (40) are provided in a one-to-one correspondence; the multiple connecting posts (111) are provided at equal intervals.

7. The automotive air conditioning unit sealing assembly according to claim 5, characterized in that, The connecting column (111) includes a connecting part (112) and a limiting part (113). The limiting part (113) is disposed on the side of the bracket body (11) facing the second sealing gasket (20), and the connecting part (112) is disposed on the limiting part (113). The diameter of the connecting part (112) is smaller than the diameter of the first connecting hole (21) and the diameter of the second connecting hole (31), the diameter of the limiting part (113) is larger than the diameter of the first connecting hole (21) and the diameter of the second connecting hole (31), one end of the connecting part (112) passes through the first connecting hole (21) and the second connecting hole (31), and the fastener (40) is sleeved on the connecting part (112).

8. The automotive air conditioning unit sealing assembly according to claim 1, characterized in that, The second sealing gasket (20) has a first through hole (22) and a second through hole (23). The first through hole (22) is configured to pass through the expansion valve pipeline (110), and the second through hole (23) is configured to pass through the heating core pipeline (120).

9. The automotive air conditioning unit sealing assembly according to claim 1, characterized in that, The second sealing gasket (20) is also provided with a skirt (24) on its periphery, and the skirt (24) covers the adapter bracket (10).

10. An automotive air conditioner, characterized in that, The automotive air conditioning system includes: Firewall sheet metal (100), wherein a receiving cavity is formed inside the firewall sheet metal (100); An expansion valve is disposed inside the receiving cavity and is connected to at least one expansion valve pipe (110) that extends out of the fire wall sheet metal (100). A heating element is disposed inside the receiving cavity, and the heating element is connected to at least one heating element pipe (120) that extends out of the fire wall sheet metal (100). In the automotive air conditioning unit sealing assembly as described in any one of claims 1-9, the expansion valve pipeline (110) and the heating core pipeline (120) are both interference-fitted with the automotive air conditioning unit sealing assembly.

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