Rear foaming type air conditioner access door frame and air conditioner access door

Abstract

The utility model discloses a rear foaming type air conditioner access door frame and an air conditioner access door, the air conditioner access door frame comprises a door frame outer frame, a door frame inner frame and a door leaf frame; the door frame outer frame and the door frame inner frame are movably inserted together to form a door frame; the door frame and the door leaf frame are each of a square frame structure, and the inner side and the outer side of each square frame structure are defined as the A side and the B side correspondingly. A first clamping groove is formed in the B side of the door frame along the periphery, a foam gripper is arranged in the first clamping groove, and a limiting plate is arranged on the inner side of the top and / or the bottom of the first clamping groove; a second clamping groove is formed in the A side of the door leaf frame along the periphery, and an elastic pressing plate is arranged on the inner side of the bottom of the second clamping groove; the B side of the door leaf frame is movably matched with the A side of the door frame, and a hemming edge exceeding the door frame is arranged at the bottom of the B side of the door leaf frame. The utility model has the advantages of stable and simple structure, no need of bolts and the like for fixation, seamless appearance, simple and stable structure, good sealing performance, waste material reduction and cost reduction.

Description

Technical Field

[0001] This utility model relates to a post-foamed air conditioner maintenance door frame and an air conditioner maintenance door, belonging to the field of air conditioner maintenance technology. Background Technology

[0002] Air conditioning access doors play a crucial role in air conditioning systems, providing convenient access for maintenance. Designed to facilitate easy access for personnel to perform necessary inspections, cleaning, and repairs, access doors provide an easily accessible entrance to central air conditioning units, air handling units, and ductwork, ensuring the continuous and efficient operation of the air conditioning system. Access doors safeguard the normal operation of the air conditioning system: Regularly opening access doors for maintenance and inspection allows personnel to promptly identify and resolve problems such as blockages, leaks, and wear. Addressing these issues is essential for the normal operation of the air conditioning system, as they can affect its cooling / heating efficiency, noise levels, and lifespan. Access doors enhance the safety of the air conditioning system: Faults in the air conditioning system can not only affect its normal operation but also threaten the safety of people and property. For example, electrical faults in the air conditioning system can lead to fires or electric shocks, while refrigerant leaks can harm human health and the environment. Regular inspection and maintenance of access doors allow for the timely detection and handling of these potential safety hazards, reducing the probability of accidents. Air conditioning access doors extend the lifespan of air conditioning systems: Proper maintenance and upkeep can extend the lifespan of air conditioning systems, reducing the frequency and cost of replacing parts. Access doors provide maintenance personnel with convenient access, enabling them to easily perform these maintenance tasks. This not only helps maintain the stable performance of the air conditioning system but also reduces downtime and repair costs caused by system failures. In short, air conditioning access doors play a vital role in ensuring the normal operation of air conditioning systems, improving safety, extending service life, and adapting to the needs of different application scenarios.

[0003] Currently, the manufacturing process for air conditioner access doors requires first preparing the air conditioner unit panel, leaving an installation opening on the panel, and then installing the access door frame onto the opening. For example, patent application number 202323605031.3 discloses a positive pressure access door structure for a combined air conditioning unit. This positive pressure access door structure includes a door frame, door leaf, hinges, and a door lock. The door frame includes an outer peripheral frame, an inner peripheral frame, an outer sheet metal, an inner sheet metal, and an aluminum profile frame. The outer sheet metal is fixedly installed on the outside of the outer and inner peripheral frames, and the inner sheet metal is fixedly installed on the inside of the outer and inner peripheral frames, with the outer and inner sheet metal arranged parallel to each other. The aluminum profile frame is embedded and fixed on the inner peripheral frame, with the outer side of the aluminum profile frame fitting against the inner circumference of the outer sheet metal. This patent, while addressing issues such as weather resistance in access doors to some extent, does not solve these problems. However, the air conditioning unit panel needs to be prepared first, and an installation opening needs to be left on the air conditioning unit panel before the air conditioning access door frame is installed on the installation opening. This has the following problems: 1) The matching between the air conditioning access door frame and the installation opening is poor. If the reserved size of the installation opening is too large, it will not only affect the installation progress, but also affect the installation stability; 2) Bolts and other fasteners are required, which is time-consuming, material-intensive, and labor-intensive; 3) A lot of waste material is generated during the preparation of the installation opening. Utility Model Content

[0004] This utility model provides a post-foamed air conditioner maintenance door frame and air conditioner maintenance door. Through the improvement of the air conditioner maintenance door frame structure, the air conditioner maintenance door frame can be prepared first, and then foamed to obtain the door leaf and air conditioner box panel with the corresponding frame structure. This avoids the problem of poor matching between the reserved installation port and the air conditioner maintenance door frame, and also avoids the waste generated by preparing the installation port. At the same time, no bolts or other fixings are required, the structure is simple, stable, and has good sealing performance.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] A post-foamed air conditioner access door frame includes an outer frame, an inner frame, and a door leaf frame.

[0007] The outer frame and the inner frame of the door frame are movably connected together to form the door frame; both the door frame and the door leaf frame are square frame structures, and the inner and outer sides of the square frame structure are defined as side A and side B, respectively.

[0008] The door frame has a first slot along its perimeter on side B, a foam gripper in the first slot, and a limiting plate on the inner side of the top and / or bottom of the first slot.

[0009] The door frame has a second slot along its perimeter on side A. The bottom inner side of the second slot has an elastic pressure plate. One end of the elastic pressure plate is connected to the side wall inside the second slot, and the other end is in contact with the bottom side wall inside the second slot.

[0010] The B side of the door frame is movably fitted onto the A side of the door frame, and the bottom of the B side of the door frame has a seam edge that extends beyond the door frame.

[0011] The aforementioned door frame and door leaf border can be a square border structure formed by splicing together four sides.

[0012] The bottom of side B of the aforementioned door frame has a seam edge that extends beyond the door frame. In other words, the seam edge on the door frame covers the edge of the door frame that contacts the door frame, which effectively conceals the seam between the door frame and the door frame.

[0013] The above-mentioned addition of an elastic pressure plate to side A of the door frame mainly serves to ensure that the outer sheet metal (lower door panel) fits tightly without shaking, prevents material leakage, and provides strong stability, eliminating the need for adhesive strips.

[0014] In this application, "contact" refers to mutual contact but not connection, meaning that the contact can be moved or pushed apart under the action of external force.

[0015] For ease of assembly, the elastic pressure plate has an upward-opening V-shaped structure. One end of the elastic pressure plate is connected to the side wall inside the second slot, and the bottom of the V-shape of the elastic pressure plate makes movable contact with the bottom side wall inside the second slot. This facilitates the smooth insertion of the outer sheet metal plate and avoids jamming.

[0016] To improve foaming stability and product stability, the outer frame of the door frame includes a first square tube. A first limiting strip and a first edging are arranged facing each other on side B of the first square tube. The first edging is located at the bottom of side B of the first square tube, and the first limiting strip is located above the first edging. A first serration is provided on the side of the first limiting strip facing the first edging. A first limiting plate is provided between the first limiting strip and the first edging. The top of the first limiting plate has a second serration that matches the first serration, effectively preventing movement of the limiting plate and improving stability. A first engaging member is provided at the top of the first square tube along its length. During foaming, the corresponding edge of the first lower door panel is inserted between the first limiting plate and the first edging, and the first limiting plate forms a compression positioning of the first lower door panel.

[0017] To further improve the stability of the product after foaming, a first T-shaped foam gripper is provided above the B-side limit strip on the outer frame of the door frame.

[0018] To further improve the stability of the foamed product, the inner frame of the door frame includes a second square tube and a third third tube. The third third tube is located on side A of the second square tube. A second edge is provided at the top of side B of the second square tube. A second engaging component is provided at the top of the second square tube along its length. A second T-shaped foam gripper is provided below the second edge on side B of the second square tube. The second engaging component on the inner frame of the door frame and the first engaging component on the outer frame of the door frame match each other and are movably engaged together. The second edge on the inner frame of the door frame and the first edge on the outer frame of the door frame form a first groove along the perimeter of side B of the door frame.

[0019] As one specific implementation scheme, a second limiting strip is provided between the second edge of the second square tube on side B and the second T-shaped foam gripper. A third serration is provided on the side of the second limiting strip facing the second edge. A second limiting plate is provided between the second limiting strip and the second edge. A fourth serration is provided at the bottom of the second limiting plate. The third and fourth serrations match each other, which can effectively prevent the limiting plate from moving and improve stability.

[0020] As another specific implementation, the second edge is lower than the top of the second square tube, forming an installation step. A third T-shaped or L-shaped foam gripper is provided on the inner side of the second edge. An elastic sealing strip is provided on the outer side of the second edge along its length, which serves to seal and prevent leakage during foaming. During foaming, the corresponding upper door panel is directly pressed onto the elastic sealing strip, and a certain pressure is applied as needed.

[0021] To improve the structural strength and sealing performance of the inspection door, the door frame includes a fourth square tube. The B side of the fourth square tube is close to the first and second square tubes, and the bottom of the B side of the fourth square tube has a seam edge that extends beyond the first square tube. The top of the fourth square tube is close to the third third tube, and the top of the fourth square tube has an extension edge that extends to the side wall of the third third tube, which can further improve the sealing performance. The top and bottom of the A side of the fourth square tube are respectively provided with a third edge and a fourth edge, forming a second groove. There is a gap between the fourth edge and the bottom of the fourth square tube, and an elastic pressure plate is set in the gap.

[0022] To extend the service life of the air conditioner access door, the outer frame of the door is made of aluminum profile; the inner frame and door leaf frame are made of PVC (polyvinyl chloride).

[0023] An air conditioner access door includes the aforementioned post-foamed air conditioner access door frame, and also includes a first upper door panel, a first lower door panel, a second upper door panel, and a second lower door panel;

[0024] The first upper door panel and the first lower door panel are positioned opposite each other on side B of the door frame. The first upper door panel is close to the top of the first slot, and the first lower door panel is close to the bottom of the first slot. The edge of the first lower door panel is inserted between the limiting plate and the inner wall of the first slot, and the limiting plate forms a compression positioning on the first lower door panel. Foaming material is filled between the first upper door panel and the first lower door panel to form a door leaf. In order to improve the foaming stability, pressure is applied to the first upper door panel during foaming. One side of the door leaf is hinged to the door frame. In the closed state, side B of the door leaf frame is movably fitted to side A of the door frame. The bottom of side B of the door leaf frame has a seam edge that extends beyond the door frame.

[0025] The second upper door panel and the second lower door panel are positioned opposite each other on side A of the door frame. The second upper door panel is close to the top of the second slot, and the second lower door panel is close to the bottom of the second slot. The edge of the second lower door panel is inserted between the elastic pressure plate and the inner wall of the second slot. The elastic pressure plate forms a compression positioning on the second lower door panel. Foaming material is filled between the second upper door panel and the second lower door panel to form the air conditioning unit panel. In order to improve the foaming stability, pressure is applied to the second upper door panel during foaming.

[0026] Air conditioning unit panel, that is, the panel on the side of the air conditioning unit where the access door is installed.

[0027] During the foaming process, the foam will wrap around the foam gripper in the first slot, so that the foam gripper can firmly position the foam layer formed by foaming, increasing the fixing tensile strength of the foam and improving the stability of the foam layer.

[0028] The aforementioned elastic pressure plate design prevents misalignment of the second lower door panel during the foaming process, thereby improving the stability of the second lower door panel and the structural strength of the panel.

[0029] The aforementioned limiting plate design prevents the first lower door panel from misaligning during the foaming process, thereby improving the stability of the first lower door panel and the structural strength of the door leaf.

[0030] The bottom of side B of the aforementioned door leaf frame has a seam-covering edge that extends beyond the door frame, which can effectively cover the splicing gap between the door leaf frame and the door frame and improve the sealing performance.

[0031] During foaming, pressure is applied to the first and second upper door panels. Therefore, depending on structural requirements, the first and second upper door panels can be positioned on the inner or outer side of the corresponding edge. After foaming is complete, the first and second upper door panels will adhere to the foaming material. When positioned on the outer side, an elastic sealing strip can be installed on the outer side of the corresponding edge, ensuring a tight seal between the first and second upper door panels and the corresponding elastic sealing strip, improving sealing performance and preventing adhesive leakage.

[0032] This application adopts a post-foaming method, which uses foam layers to bond the components together as a whole, eliminating the need for bolts or other fasteners.

[0033] Existing technology requires first preparing the air conditioning unit panel with foam, leaving installation openings on the panel, and then installing the air conditioning access door frame onto the installation openings. This application involves directly foaming the air conditioning access door frame, which is called post-foaming.

[0034] The first lower door panel edge is inserted between the first limiting plate and the first edging on the outer frame of the door frame, and the first limiting plate presses and positions the first lower door panel. When an installation step is formed between the second edging and the second square tube on the inner frame of the door frame, the upper surface of the first upper door panel and the second edging are adhered to and engaged on the installation step. When no installation step is provided between the second edging and the second square tube on the inner frame of the door frame, no foam gripper is provided on the lower surface of the second edging, and the lower surface of the first upper door panel and the second edging are adhered. After foaming between the first upper door panel and the first lower door panel, a foam layer is formed, and the foam layer is bonded to the first upper door panel, the first lower door panel, the outer frame of the door frame, and the inner frame of the door frame. After foaming between the second upper door panel and the second lower door panel, a foam layer is formed, and the foam layer is bonded to the second upper door panel, the second door panel, and the door leaf frame.

[0035] Any technologies not mentioned in this utility model are based on existing technologies.

[0036] This utility model relates to a post-foamed air conditioner access door frame and access door. Through the ingenious design of foam grippers, limiting plates, and elastic pressure plates, the stability of foaming is ensured. After foaming, the foam layer bonds the components together, resulting in a stable and simple structure. No bolts or other fasteners are required. The air conditioner access door frame can be prepared first, and then the door leaf and air conditioner unit panel can be foamed to avoid the problem of poor matching between the reserved installation opening and the air conditioner access door frame. It also avoids the waste generated from preparing the installation opening, thus reducing costs. The exterior is seamless, the structure is simple, stable, and has good sealing performance. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the existing door frame outer edge structure;

[0038] Figure 2 This is a schematic diagram of the outer frame structure of the door frame of this utility model. Figure 1 ;

[0039] Figure 3 This is a schematic diagram of the outer frame structure of the door frame of this utility model. Figure 2 (The limit plate has been omitted);

[0040] Figure 4 This is a schematic diagram of the existing door frame inner border structure;

[0041] Figure 5 This is a schematic diagram of the inner frame structure of the door frame of this utility model. Figure 1 ;

[0042] Figure 6 This is a schematic diagram of the inner frame structure of the door frame of this utility model. Figure 2 ;

[0043] Figure 7 This is a schematic diagram of the assembly of the outer frame and inner frame of the door frame of this utility model. Figure 1 ;

[0044] Figure 8 This is a schematic diagram of the assembly of the outer frame and inner frame of the door frame of this utility model. Figure 2 ;

[0045] Figure 9 This is a schematic diagram of the assembly of the outer frame and inner frame of the door frame of this utility model. Figure 3 ;

[0046] Figure 10 This is a schematic diagram of the existing door frame structure;

[0047] Figure 11 This is a schematic diagram of the door frame structure of this utility model. Figure 1 ;

[0048] Figure 12 This is a schematic diagram of the door frame structure of this utility model. Figure 2 ;

[0049] Figure 13 This is a schematic diagram of the frame structure of the post-foaming air conditioner inspection door of this utility model.

[0050] In the diagram, 1 represents the outer frame of the door frame, 11 represents the first square tube, 12 represents the first limiting strip, 13 represents the first edging, 14 represents the first limiting plate, 15 represents the first snap-fit ​​component, 2 represents the inner frame of the door frame, 21 represents the second square tube, 22 represents the third square tube, 23 represents the second edging, 24 represents the foam gripper, 25 represents the second limiting strip, 26 represents the second snap-fit ​​component, 27 represents the elastic sealing strip, 3 represents the door frame, 31 represents the first slot, 4 represents the door leaf frame, 41 represents the fourth square tube, 42 represents the seam wrapping, 43 represents the extension edge, 44 represents the elastic pressure plate, 45 represents the third edging, and 46 represents the fourth edging. A represents side A, and B represents side B. Detailed Implementation

[0051] To better understand this utility model, the following embodiments further illustrate the content of this utility model, but the content of this utility model is not limited to the following embodiments.

[0052] The directional terms "upper," "lower," "top," and "bottom" used in this application are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this application. They are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application.

[0053] Example 1

[0054] like Figure 13 As shown, a post-foamed air conditioner access door frame includes an outer frame, an inner frame, and a door leaf frame.

[0055] like Figure 7-9 As shown, the outer frame and the inner frame of the door frame are movably connected together to form the door frame; both the door frame and the door leaf frame are square frame structures, and the inner and outer sides of the square frame structure are defined as side A and side B, respectively.

[0056] The door frame has a first slot along its perimeter on side B, a foam gripper in the first slot, and a limiting plate on the inner side of the top and / or bottom of the first slot.

[0057] like Figure 11-12 As shown, a second slot is provided on side A of the door frame along the perimeter. An elastic pressure plate is provided on the inner bottom of the second slot. One end of the elastic pressure plate is connected to the side wall inside the second slot, and the other end is in movable contact with the bottom side wall inside the second slot.

[0058] The B side of the door frame is movably fitted onto the A side of the door frame, and the bottom of the B side of the door frame has a seam edge that extends beyond the door frame.

[0059] The bottom of side B of the aforementioned door frame has a seam-covering edge that extends beyond the door frame. This seam-covering edge completely covers the edge of the door frame that contacts the door frame, effectively concealing the seam between the door frame and the door frame. An elastic pressure plate is added to side A of the door frame. Its main function is to ensure a tight, secure fit of the outer sheet metal (lower door panel) without wobbling, preventing material leakage, and providing high stability without the need for adhesive strips.

[0060] Example 2

[0061] Based on Example 1, the following improvements were made: To facilitate assembly, the elastic pressure plate has an upward-opening V-shaped structure. One end of the elastic pressure plate is connected to the side wall inside the second slot, and the bottom of the V-shape of the elastic pressure plate is in movable contact with the bottom side wall inside the second slot. This facilitates the smooth insertion of the outer sheet metal plate and avoids jamming.

[0062] Example 3

[0063] Based on Example 2, the following improvements were made: Figure 2As shown, to improve foaming stability and product stability, the outer frame of the door frame includes a first square tube. A first limiting strip and a first edging are arranged facing each other on side B of the first square tube. The first edging is located at the bottom of side B of the first square tube, and the first limiting strip is located above the first edging. A first serration is provided on the side of the first limiting strip facing the first edging. A first limiting plate is provided between the first limiting strip and the first edging. A second serration is provided at the top of the first limiting plate. The second serration and the first serration match each other, effectively preventing the limiting plate from moving and improving stability. A first engaging member is provided at the top of the first square tube along its length.

[0064] Example 4

[0065] Based on Example 3, the following improvements were made: Figure 3 As shown, in order to further improve the stability of the product after foaming, a first T-shaped foam gripper is provided above the B-side limit strip of the outer frame of the door frame.

[0066] Example 5

[0067] Based on Example 3 or 4, the following improvements were further made: Figure 5-6 As shown, in order to further improve the stability of the product after foaming, the inner frame of the door frame includes a second square tube and a third third tube. The third third tube is located on side A of the second square tube. The top of side B of the second square tube is provided with a second edging. The top of the second square tube is provided with a second engaging member arranged along the length direction. Below the second edging on side B of the second square tube is a second T-shaped foam gripper. The second engaging member on the inner frame of the door frame and the first engaging member on the outer frame of the door frame match each other and are movably engaged together. The second edging on the inner frame of the door frame and the first edging on the outer frame of the door frame form a first slot arranged along the periphery on side B of the door frame.

[0068] Example 6

[0069] Based on Example 5, the following improvements were further made: Figure 5 As shown, a second limiting strip is provided between the second edge of the second square tube on side B and the second T-shaped foam gripper. A third serration is provided on the side of the second limiting strip facing the second edge. A second limiting plate is provided between the second limiting strip and the second edge. A fourth serration is provided at the bottom of the second limiting plate. The third and fourth serrations match each other, which can effectively prevent the limiting plate from moving and improve stability.

[0070] Example 7

[0071] Based on Example 5, the following improvements were further made: Figure 6As shown, the second edge is lower than the top of the second square tube, forming an installation step. The inner side of the second edge is provided with a third T-shaped foam gripper or L-shaped foam gripper. The outer side of the second edge is provided with an elastic sealing strip along the length direction, which can play the role of sealing and preventing glue leakage during foaming.

[0072] Figure 7 The door frame structure shown is composed of the outer frame of the door frame in Embodiment 4 and the inner frame of the door frame in Embodiment 6. Figure 8 The door frame structure shown is composed of the outer frame of the door frame in Embodiment 3 and the inner frame of the door frame in Embodiment 7. Figure 9 The door frame structure shown is composed of the outer frame of the door frame in Embodiment 4 and the inner frame of the door frame in Embodiment 7.

[0073] Example 8

[0074] Based on Example 6 or 7, the following improvements were further made: Figure 12 As shown, to improve the structural strength and sealing of the access door, the door frame includes a fourth square tube. Side B of the fourth square tube abuts against the first and second square tubes, and the bottom of side B of the fourth square tube has a seam edge extending beyond the first square tube. The top of the fourth square tube abuts against a third third square tube, and the top of the fourth square tube has an extension edge extending to the side wall of the third third square tube, further improving sealing. The top and bottom of side A of the fourth square tube have third and fourth seams respectively, forming a second groove. A gap is left between the fourth seam and the bottom of the fourth square tube, and an elastic pressure plate is placed within the gap. To extend the service life of the air conditioning access door, the outer frame is made of aluminum profile; the inner frame and door leaf frame are made of PVC (polyvinyl chloride).

[0075] Example 9

[0076] An air conditioner access door includes a rear-foamed air conditioner access door frame (e.g., embodiment 8), and also includes a first upper door panel, a first lower door panel, a second upper door panel, and a second lower door panel;

[0077] The first upper door panel and the first lower door panel are positioned opposite each other on side B of the door frame. The first upper door panel is close to the top of the first slot, and the first lower door panel is close to the bottom of the first slot. The edge of the first lower door panel is inserted between the limiting plate and the inner wall of the first slot, and the limiting plate forms a compression positioning on the first lower door panel. Foaming material is filled between the first upper door panel and the first lower door panel to form a door leaf. In order to improve the foaming stability, pressure is applied to the first upper door panel during foaming. One side of the door leaf is hinged to the door frame. In the closed state, side B of the door leaf frame is movably fitted to side A of the door frame. The bottom of side B of the door leaf frame has a seam edge that extends beyond the door frame.

[0078] The second upper door panel and the second lower door panel are positioned opposite each other on side A of the door frame. The second upper door panel is close to the top of the second slot, and the second lower door panel is close to the bottom of the second slot. The edge of the second lower door panel is inserted between the elastic pressure plate and the inner wall of the second slot. The elastic pressure plate forms a compression positioning on the second lower door panel. Foaming material is filled between the second upper door panel and the second lower door panel to form the air conditioning unit panel. In order to improve the foaming stability, pressure is applied to the second upper door panel during foaming.

[0079] The first lower door panel edge is inserted between the first limiting plate and the first edging on the outer frame of the door frame, and the first limiting plate presses and positions the first lower door panel. When an installation step is formed between the second edging and the second square tube on the inner frame of the door frame, the upper surface of the first upper door panel and the second edging are attached and engaged on the installation step. When no installation step is provided between the second edging and the second square tube on the inner frame of the door frame, no foam gripper is provided on the lower surface of the second edging, and the lower surface of the first upper door panel and the second edging are attached. After foaming between the first upper door panel and the first lower door panel, a foam layer is formed, and the foam layer is bonded to the first upper door panel, the first lower door panel, the outer frame of the door frame, and the inner frame of the door frame. After foaming between the second upper door panel and the second lower door panel, a foam layer is formed, and the foam layer is bonded to the second upper door panel, the second door panel, and the door leaf frame.

[0080] During the foaming process, the foam wraps around the foam gripper in the first slot, firmly positioning the foam layer and increasing its tensile strength, thus improving its stability. The elastic pressure plate prevents misalignment of the second lower door panel during foaming, enhancing its stability and structural strength. The limiting plate prevents misalignment of the first lower door panel during foaming, further improving its stability and structural strength. The bottom of the door frame (B side) features a seam-covering edge extending beyond the door frame, effectively concealing the seam between the door frame and the door panel, improving sealing.

[0081] During foaming, pressure is applied to the first and second upper door panels. Therefore, depending on structural requirements, the first and second upper door panels can be positioned on the inner or outer side of the corresponding edge. After foaming is complete, the first and second upper door panels will adhere to the foaming material. When positioned on the outer side, an elastic sealing strip can be installed on the outer side of the corresponding edge, ensuring a tight seal between the first and second upper door panels and the corresponding elastic sealing strip, improving sealing performance and preventing adhesive leakage.

[0082] The above-mentioned examples of post-foamed air conditioner access door frames and access doors, through the ingenious design of foam grippers, limiting plates, and elastic pressure plates, ensure the stability of foaming. After foaming, the foam layer bonds the components together, resulting in a stable and simple structure. No bolts or other fasteners are required. The air conditioner access door frame can be prepared first, and then the door leaf and air conditioner unit panel can be foamed to avoid the problem of poor matching between the reserved installation opening and the air conditioner access door frame. It also avoids the waste generated from preparing the installation opening, thus reducing costs. The exterior is seamless, the structure is simple, stable, and has good sealing performance.

Claims

1. A post-foamed air conditioner maintenance door frame, characterized in that: Includes the outer frame of the door frame (1), the inner frame of the door frame (2), and the door leaf frame (4); The outer frame (1) and the inner frame (2) of the door frame are movably connected together to form the door frame (3); the door frame (3) and the door leaf frame (4) are both square frame structures, and the inner and outer sides of the square frame structure are defined as side A and side B respectively; The door frame (3) has a first slot (31) on its B side, which is arranged along the perimeter. A foam gripper (24) is provided in the first slot (31), and a limiting plate is provided on the top and / or bottom inner side of the first slot (31). The door frame (4) has a second slot on side A along the perimeter. The bottom inner side of the second slot has an elastic pressure plate (44). One end of the elastic pressure plate (44) is connected to the side wall inside the second slot, and the other end is in contact with the bottom side wall inside the second slot. The B side of the door frame (4) is movably fitted to the A side of the door frame (3), and the bottom of the B side of the door frame (4) has a seam edge (42) that extends beyond the door frame (3).

2. The post-foaming air conditioner access door frame as described in claim 1, characterized in that: The elastic pressure plate (44) is a V-shaped structure with the opening facing upward. One end of the elastic pressure plate (44) is connected to the side wall inside the second slot, and the bottom of the V-shape of the elastic pressure plate (44) is in contact with the bottom side wall inside the second slot.

3. The post-foaming air conditioner access door frame as described in claim 1 or 2, characterized in that: The outer frame (1) of the door frame includes a first square tube (11). The B side of the first square tube (11) is provided with a first limiting strip (12) and a first edging (13) facing each other. The first edging (13) is located at the bottom of the B side of the first square tube (11), and the first limiting strip (12) is located above the first edging (13). The first limiting strip (12) is provided with a first serration on the side facing the first edging (13). A first limiting plate (14) is provided between the first limiting strip (12) and the first edging (13). The top of the first limiting plate (14) is provided with a second serration, and the second serration and the first serration are matched together. The top of the first square tube (11) is provided with a first engaging member (15) arranged along the length direction.

4. The post-foaming air conditioner access door frame as described in claim 3, characterized in that: The outer frame of the door frame (1) has a first T-shaped foam gripper (24) above the B-side limit strip.

5. The post-foaming air conditioner access door frame as described in claim 3, characterized in that: The inner frame (2) of the door frame includes a second square tube (21) and a third third tube (22). The third third tube (22) is located on the A side of the second square tube (21). The top of the B side of the second square tube (21) is provided with a second edge band (23). The top of the second square tube (21) is provided with a second locking piece (26) arranged along the length direction. The second T-shaped foam gripper (24) is provided below the second edge band (23) on the B side of the second square tube (21). The second locking piece (26) on the inner frame (2) of the door frame and the first locking piece (15) on the outer frame (1) of the door frame match each other and are movably locked together. The second edge band (23) on the inner frame (2) of the door frame and the first edge band (13) on the outer frame (1) of the door frame form the first slot (31) arranged along the periphery on the B side of the door frame (3).

6. The post-foaming air conditioner access door frame as described in claim 5, characterized in that: A second limiting strip (25) is provided between the second edge (23) on the B side of the second square tube (21) and the second T-shaped foam gripper (24). A third serration is provided on the side of the second limiting strip (25) facing the second edge (23). A second limiting plate is provided between the second limiting strip (25) and the second edge (23). A fourth serration is provided at the bottom of the second limiting plate. The third serration and the fourth serration are matched together. Alternatively, the second edging (23) is lower than the top of the second square tube (21) to form an installation step, and a third T-shaped foam gripper (24) or L-shaped foam gripper (24) is provided on the inner side of the second edging (23); an elastic sealing strip (27) is provided on the outer side of the second edging (23) along the length direction.

7. The post-foaming air conditioner access door frame as described in claim 5, characterized in that: The door frame (4) includes a fourth square tube (41), the B side of the fourth square tube (41) is close to the first square tube (11) and the second square tube (21), the bottom of the B side of the fourth square tube (41) is provided with a seam edge (42) that extends beyond the first square tube (11); the top of the fourth square tube (41) is close to the third third tube (22), the top of the fourth square tube (41) is provided with an extension edge (43) that extends to the side wall of the third third tube (22); the top and bottom of the A side of the fourth square tube (41) are respectively provided with a third edge (45) and a fourth edge (46) to form a second slot, and there is a gap between the fourth edge (46) and the bottom of the fourth square tube (41), and an elastic pressure plate (44) is provided in the gap.

8. The post-foaming air conditioner access door frame as described in claim 1 or 2, characterized in that: The outer frame (1) of the door frame is made of aluminum profile; the inner frame (2) and the door leaf frame (4) are made of PVC.

9. An air conditioner access door, comprising the post-foamed air conditioner access door frame as described in any one of claims 1-8, characterized in that: It also includes the first upper door panel, the first lower door panel, the second upper door panel, and the second lower door panel; The first upper door panel and the first lower door panel are positioned opposite each other on the B side of the door frame (3). The first upper door panel is close to the top of the first slot (31), and the first lower door panel is close to the bottom of the first slot (31). The edge of the first lower door panel is inserted between the limiting plate and the inner wall of the first slot (31). The limiting plate forms a squeezing and positioning of the first lower door panel. Foaming material is filled between the first upper door panel and the first lower door panel to form a door leaf. One side of the door leaf is hinged to the door frame (3). In the closed state, the B side of the door leaf frame (4) is movably attached to the A side of the door frame (3). The bottom of the B side of the door leaf frame (4) has a seam edge (42) that extends beyond the door frame (3). The second upper door panel and the second lower door panel are positioned opposite each other on side A of the door frame (4). The second upper door panel is close to the top of the second slot, and the second lower door panel is close to the bottom of the second slot. The edge of the second lower door panel is inserted between the elastic pressure plate (44) and the inner wall of the second slot. The elastic pressure plate (44) forms a compression positioning on the second lower door panel. Foaming material is filled between the second upper door panel and the second lower door panel to form an air conditioning unit panel.

10. The air conditioner access door as described in claim 9, characterized in that: The first lower door panel edge is inserted between the first limiting plate (14) and the first edging (13) of the outer frame of the door frame (1), and the first limiting plate (14) forms a compression positioning on the first lower door panel; when an installation step is formed between the second edging (23) on the inner frame of the door frame (2) and the second square tube (21), the first upper door panel is attached to and engaged with the upper surface of the second edging (23) on the installation step; when no installation step is provided between the second edging (23) on the inner frame of the door frame (2) and the second square tube (21). At that time, no foam gripper (24) is provided on the lower surface of the second edge (23), and the first upper door panel is attached to the lower surface of the second edge (23); after the foam material is foamed between the first upper door panel and the first lower door panel, a foam layer is formed, and the foam layer is bonded together with the first upper door panel, the first lower door panel, the outer frame (1) of the door frame and the inner frame (2) of the door frame; after the foam material is foamed between the second upper door panel and the second lower door panel, a foam layer is formed, and the foam layer is bonded together with the second upper door panel, the second door panel and the door leaf frame (4).

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