Warm air core assembly structure of automobile air conditioner

Abstract

The utility model discloses a warm air core assembly structure of an automobile air conditioner, which relates to the technical field of automobile air conditioning systems and comprises a warm air core, a lower shell and a distribution box. According to the structure, a traditional integrated distribution box shell is divided into a distribution box and a lower shell, and the assembly mode that a warm air core body is installed from the lower portion is adopted. The distribution box and the lower shell are respectively provided with a mounting groove and a fixing groove, the mounting groove and the fixing groove are combined to form a core body limiting structure, and meanwhile, sealing ribs are distributed in the distribution box and the lower shell and used for fixing and sealing the warm air core body; a positioning pin is arranged on the distribution box and matched with a positioning hole in the lower shell, so that the assembly accuracy and the sealing effect are further improved; the pipeline appearance of the warm air core body is matched with the shape of the lower volute, and it is guaranteed that the assembling process is simple and smooth. According to the assembly structure, the assembly adaptability of the warm air core body in a narrow space is improved, parts are simplified, and the sealing performance and the operation visibility are enhanced.

Description

Technical Field

[0001] This utility model relates to the field of automotive air conditioning heater core installation technology, specifically an automotive air conditioning heater core assembly structure. Background Technology

[0002] The heater core in an automotive air conditioning system is a crucial component for heating and regulating air, and it is typically housed within the air conditioning distribution box. In existing technology, the heater core is usually installed using a side-insertion method, where it is inserted from the side of the distribution box along the Y-axis and secured with sealing and compression structures. This type of structure is relatively universal and widely used in vehicles with ample space.

[0003] For example, Chinese patent CN202322397971.1 discloses an installation structure for a car air conditioning heater core, including a distribution box housing and a heater core. The heater core is installed via the side of the distribution box, and the distribution box housing has an installation groove into which the heater core is embedded. Sealing foam is provided at the bottom, and a pressure plate is provided at the top for fixing with screws. Limiting ribs are provided on the pressure plate to restrict the position of the heater core. This solution has a simple structure and is suitable for conventional space layouts, but it still has certain limitations in practical applications.

[0004] First, this side-mounted assembly structure is difficult to implement when vehicle space is limited, especially when the dashboard, wiring harness, or other components are close to the side of the distribution box, making it difficult to insert the heater core smoothly, affecting assembly efficiency and feasibility. Second, because the heater core is inserted from the side, it is difficult to observe whether the core is fully inserted during installation, especially when the sealing foam is compressed and deformed, making it difficult to confirm whether the core is completely fitted to the positioning area, which can easily lead to problems such as inadequate sealing and loose assembly. In addition, the existing structure relies on additional pressure plates for limiting and fixing, increasing the number of parts, assembly steps, and manufacturing costs.

[0005] Therefore, the existing side-mounted structure of the heater core still has room for improvement in terms of assembly flexibility, operation visibility and parts optimization. There is an urgent need for a new type of heater core assembly structure that can be easily assembled under space constraints and has good sealing and positioning effects. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the existing defects and provide an assembly structure for automotive air conditioning heating core. This structure adopts the method of installing the heating core from below the distribution box, replacing the traditional side insertion method. It is suitable for narrow spaces limited by the dashboard or side wall structure, effectively expanding the scope of installation application, improving the flexibility of vehicle layout, and effectively solving the problems in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an automotive air conditioning heater core assembly structure, comprising a heater core, a lower housing, and a distribution box. The traditional distribution box housing is divided into a distribution box and a lower housing. The lower housing and the distribution box are configured as an open structure for installing the heater core. The lower housing and the distribution box are fixed together by screws, and a cavity for fixing the heater core is formed between the lower housing and the distribution box. A mounting groove is provided on one side of the distribution box, and a fixing groove corresponding to the mounting groove is provided on the lower housing. The mounting groove and the fixing groove form a core limiting structure, allowing the heater core to be positioned within the distribution box. After confirming the heater core is installed correctly, insert it into the bottom of the distribution box and fasten the lower housing to the distribution box to secure the heater core. Because of the core limiting structure, there is no need to add a heater core pressure plate, saving a part and reducing costs. At the same time, the core limiting structure also enhances the air conditioning unit's sealing performance. A sealing groove is provided on the mating surface between the distribution box and the lower housing, and a sealing rib is provided on the lower housing corresponding to the sealing groove. The sealing rib is fastened into the sealing groove to ensure proper installation. This not only ensures greater structural stability but also ensures the heater core is installed correctly, improving the sealing performance between the housing and the heater core.

[0008] Because the bottom of the distribution box is an open structure, the position of the heating core can be easily seen during the installation process. The bottom insertion method can clearly confirm whether the heating core is inserted to the bottom and whether the sealing sponge has been compressed. This confirmation process is difficult to achieve with the traditional side insertion structure.

[0009] Furthermore, the distribution box is equipped with positioning pins, and the lower housing is equipped with positioning holes corresponding to the positioning pins. Through the cooperation of the positioning holes and positioning pins, the lower housing can be accurately installed, while ensuring that the sealing ribs can smoothly enter the sealing groove, thus ensuring accurate and smooth installation.

[0010] Furthermore, ribs are provided on the inner surfaces of the lower housing and the distribution box for fixing and sealing the warm air core.

[0011] Furthermore, the piping shape of the heater core is designed to match the shape of the lower volute, ensuring that the assembly trajectory of the heater core does not interfere with the distribution box, and the assembly process of the heater core is simple and smooth.

[0012] Furthermore, at least three positioning pins are provided and arranged around the perimeter of the mating surface with the lower housing.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model effectively breaks through the dependence of traditional side assembly on space by re-dividing the traditional one-piece distribution box shell into two parts: the distribution box and the lower shell, and adopts the assembly method of inserting the heater core from the bottom of the distribution box. It solves the problem that the existing structure cannot be assembled in limited scenarios such as dashboard obstruction and compact body structure. This structure is particularly suitable for the trend of compact vehicle space design and improves the applicability and design flexibility of the heater core assembly structure in different models.

[0015] 2. This assembly structure features a core limiting structure that engages with the mounting groove on the distribution box and the fixing groove on the lower shell. This not only achieves stable positioning of the heating core but also eliminates the need for traditional pressure plate components, reducing the number of parts and assembly costs. Simultaneously, a sealing groove and sealing rib structure are provided at the joint surface of the upper and lower shells. Through precise fitting, the overall sealing performance of the shell is improved, ensuring no air leakage and further enhancing the heating efficiency of the heating system.

[0016] 3. The distribution box adopts an open bottom structure, allowing the operator to directly see the insertion position of the heater core during assembly, ensuring proper assembly and effectively avoiding functional failures caused by insufficient foam compaction or incomplete insertion. At the same time, the pipe shape design of the heater core matches the shape of the lower volute, ensuring that the assembly trajectory of the heater core does not interfere with the lower volute, making the assembly process of the heater core simple and smooth. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the present invention with the lower shell removed;

[0019] Figure 3 This is a schematic diagram of the lower shell structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of this utility model without the lower shell and the heater core.

[0021] In the diagram: 1. Heater core, 2. Lower housing, 3. Distribution box, 4. Positioning pin, 5. Sealing groove, 6. Fixing groove, 7. Ear plate, 8. Positioning hole, 9. Sealing rib, 10. Rib, 11. Mounting groove, 12. Lower volute. Detailed Implementation

[0022] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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.

[0023] Please see Figure 1-4 This utility model provides a technical solution: an assembly structure for an automotive air conditioning heater core, which splits a traditional distribution box housing into two parts: a distribution box 3 and a lower housing 2. The lower housing 2 and the distribution box 3 are configured as an open structure for installing the heater core 1. The lower housing 2 and the distribution box 3 are fixed together by screws, and a cavity for fixing the heater core 1 is formed between the lower housing 2 and the distribution box 3. A mounting groove 11 is provided on one side of the distribution box 3, and a fixing groove 6 corresponding to the mounting groove 11 is provided on the lower housing 2. The mounting groove 11 and the fixing groove 6 are aligned. The heating core 1 is installed from below the distribution box 3 using a core limiting structure. After confirming that the heating core 1 is installed in place, the lower housing 2 is fastened to the distribution box 3 to fix the heating core 1. Due to the core limiting structure, there is no need to add a pressure plate for the heating core 1, saving a part and reducing costs. At the same time, the core limiting structure can also enhance the air conditioning unit's sealing performance. A sealing groove 5 is provided on the mating surface between the distribution box 3 and the lower housing 2. A sealing rib 9 corresponding to the sealing groove 5 is provided on the lower housing 2. The sealing rib 9 is fastened into the sealing groove 5 to ensure proper installation.

[0024] This embodiment optimizes the structure by dividing the traditional integrated distribution box into a distribution box 3 and a lower shell 2. The open structure of the lower shell 2 allows the heater core 1 to be installed from below. During assembly, the heater core 1 is inserted into the cavity from the bottom of the distribution box 3. Due to the core limiting structure formed by the installation groove 11 and the fixing groove 6, the heater core 1 can automatically align and position itself during insertion, ensuring accurate placement. At the same time, ribs 10 are provided at the positions where the heater core 1 is installed inside the distribution box 3 and the lower shell 2 to ensure the fixation and sealing of the heater core. After installation, the lower shell 2 is fixed to the distribution box 3 with screws, and the sealing ribs 9 are snapped into the sealing grooves 5 to ensure no air leakage.

[0025] This structure offers several advantages over traditional side-insertion methods: First, the bottom insertion structure significantly improves assembly flexibility, making it particularly suitable for vehicles with compact interior structures and effectively solving the problem of assembly difficulties caused by dashboard or wiring harness obstructions; second, the core limiting structure eliminates the need for traditional pressure plate structures, simplifying the number of components and reducing costs and assembly difficulty; furthermore, the insertion status of the heater core 1 can be directly observed during assembly, improving installation confirmation and preventing seal failures caused by incomplete core insertion or insufficient foam compaction; the sealing structure further enhances overall sealing performance through precise fitting, improving air conditioning heating efficiency and reliability.

[0026] In the above embodiment, the distribution box 3 is provided with a positioning pin 4, and the lower housing 2 is provided with a positioning hole 8 corresponding to the positioning pin 4. Through the cooperation of the positioning hole 8 and the positioning pin 4, the lower housing 2 can be accurately installed, while ensuring that the sealing rib 9 can smoothly enter the sealing groove 5, thus ensuring accurate and smooth installation. This positioning structure can effectively guide the lower housing 2 to be accurately aligned, avoid deviation, improve assembly efficiency and consistency, and ensure the correct installation and stable performance of the sealing structure.

[0027] In the above embodiment, ribs 10 are provided on the inner surfaces of the lower housing 2 and the distribution box 3 to fix the heating core 1 and to limit and seal the heating core 1; ear plates 7 are provided on the outer side of the lower housing 2. This structure is easy to grip and position during manual assembly, which significantly improves the convenience of actual operation.

[0028] In the above embodiments, in order to further optimize the assembly path, the pipe shape design of the warm air core 1 is matched with the shape of the lower volute 12 to ensure that no interference occurs during the insertion process, thereby achieving smooth assembly; the structure avoids jamming or collision problems during the assembly process through preset spatial orientation and shape compatibility, thereby improving assembly efficiency and system reliability.

[0029] In the above embodiments, to enhance positioning accuracy and connection firmness, at least three positioning pins 4 are provided and are evenly distributed around the mating surface with the lower housing 2. This arrangement ensures precise fit of the mating surfaces of the upper and lower housings through multi-point spatial positioning, improves torsional stability and assembly consistency, and further enhances the sealing effect and structural integrity of the product.

[0030] The mounting groove 11, fixing groove 6, sealing groove 5, sealing rib 9, ear plate 7, ear hole, rib 10 and other structures involved in the above embodiments can be optimized in terms of parameters or deformed in terms of structure according to the overall vehicle layout and manufacturing process requirements, so as to improve structural adaptability and manufacturing efficiency while keeping the basic functions unchanged.

[0031] The foregoing has shown and described the basic principles, main features and advantages of this utility model. Various changes and modifications may be made to this utility model without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of this utility model as claimed.

Claims

1. An assembly structure for an automotive air conditioning heater core, comprising a heater core (1), a lower housing (2), and a distribution box (3), characterized in that: The lower housing (2) and the distribution box (3) are configured as an open structure for installing the heating core (1). The lower housing (2) and the distribution box (3) are fixed together by screws. An installation groove (11) is provided on one side of the distribution box (3). A fixing groove (6) corresponding to the installation groove (11) is provided on the lower housing (2). The installation groove (11) and the fixing groove (6) form a core limiting structure.

2. The automotive air conditioning heater core assembly structure according to claim 1, characterized in that: A sealing groove (5) is provided on the mating surface of the distribution box (3) and the lower housing (2). A sealing rib (9) corresponding to the sealing groove (5) is provided on the lower housing (2). At the same time, a positioning pin (4) is provided on the distribution box (3), and a positioning hole (8) corresponding to the positioning pin (4) is provided on the lower housing (2).

3. The automotive air conditioning heater core assembly structure according to claim 1, characterized in that: A cavity is formed between the lower shell (2) and the distribution box (3) for fixing the heating core (1). Ribs (10) are provided around the cavity for fixing and sealing the heating core (1).

4. The automotive air conditioning heater core assembly structure according to claim 1, characterized in that: The pipe shape design of the heating core (1) is matched with the shape of the lower volute (12).

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