Anti-deformation door body structure
By combining the bolted connection of the columns with multi-layer through holes and the honeycomb partition design, the problems of interlayer peeling and corner cracking of the door structure under temperature and humidity cycles are solved, achieving a door structure design with resistance to deformation and high rigidity, and possessing excellent sound insulation performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN HENGBO INTELLIGENT MANUFACTURING CO LTD
- Filing Date
- 2025-04-25
- Publication Date
- 2026-05-05
AI Technical Summary
The existing door structure is prone to interlayer delamination and corner cracking under temperature and humidity cycles, and lacks a through rigid connection, leading to overall structural instability.
The structure employs a bolted connection structure with columns and multi-layer through holes, combined with a dual composite support system of honeycomb partitions and polyurethane foam materials, forming a through-type stress transmission system to enhance the shear strength of the four corner areas. The overall structural stability is further improved by combining stainless steel or anodized aluminum alloy with solid wood or environmentally friendly composite wood.
It effectively prevents the door from twisting and deforming, improves the shear strength of the four corner areas, enhances the rigidity and compressive strength of the overall structure, and also has excellent sound insulation performance.
Smart Images

Figure CN224200509U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of door technology, and in particular to a door structure that resists deformation. Background Technology
[0002] A door is an entrance or exit point for a building, and also refers to a device installed at an entrance or exit that can be opened and closed. There are many types of doors available, such as aluminum alloy doors, wooden doors, and bamboo doors. The structure of a door generally consists of a door frame and a panel set within the door frame. Traditional layered doors often employ a multi-layered composite structure with an outer decorative layer, a core layer, and a reinforcing layer to balance strength and functionality.
[0003] In existing door structures, the mechanical connections between layers are weak. Conventional layered door structures often use adhesives or local screws to fix the structural layers, lacking a through-type rigid connection between layers. Under the influence of temperature and humidity cycles, interlayer delamination is likely to occur. Due to the lack of dedicated reinforcement structures in the four corner areas, cracks are likely to occur at the joints under the impact of frequent door opening and closing, leading to overall structural instability. Utility Model Content
[0004] The purpose of this invention is to overcome the problems of peeling and cracking at the four corners in existing door structures, and to provide a door structure that is resistant to deformation.
[0005] A deformation-resistant door structure, including
[0006] The outer layer has columns at its four corners and threaded holes in the middle of the columns.
[0007] A core layer is located inside the outer layer; a first through hole is provided at each of the four corners of the core layer;
[0008] The reinforcement layers are disposed on both sides of the core layer, namely the first reinforcement layer and the second reinforcement layer; a second through hole is provided at the four corners of the reinforcement layer;
[0009] The inner layer is disposed inside the second reinforcing layer. Circular grooves are provided at the four corners of the inner layer, and a third through hole is provided through the circular grooves.
[0010] Furthermore, the core layer includes an aluminum core substrate, on the inner and outer surfaces of which honeycomb partitions are arranged in an array, and the honeycomb partitions are filled with polyurethane foam material.
[0011] Furthermore, the aluminum core substrate is provided with first reinforcing ridges on all four sides.
[0012] Furthermore, the reinforcing layer includes a reinforcing aluminum plate, and a baffle is provided along the edge on one side of the reinforcing aluminum plate; a second reinforcing ridge is also arranged in rows on the inner side of the baffle, and the second reinforcing ridge is configured as X-shaped.
[0013] Furthermore, the outer layer is made of stainless steel or anodized aluminum alloy; the inner layer is made of solid wood or environmentally friendly composite wood.
[0014] The beneficial effects of this utility model are as follows: The bolted connection structure between the column and multiple through holes forms a through-type stress transmission system. The vertical coaxial design of the threaded holes and multiple through holes, combined with the stress buffer structure of the circular grooves, enhances the shear strength of the four corner areas, effectively preventing torsional deformation of the door. Simultaneously, by forming a dual composite support system between the core layer and the aluminum core substrate and honeycomb partitions, and with the addition of polyurethane foam filling, it possesses both high compressive strength and excellent sound insulation performance. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this gate;
[0016] Figure 2 This is a schematic diagram of the exploded structure of the door.
[0017] Figure 3 This is a schematic diagram of the outer structure;
[0018] Figure 4 This is a schematic diagram of the core layer structure;
[0019] Figure 5 This is a schematic diagram of the reinforcement layer structure;
[0020] Figure 6 This is a schematic diagram of the inner structure;
[0021] In the diagram, 1-outer layer, 11-post, 12-threaded hole, 2-reinforcement layer, 21-reinforcement aluminum plate, 22-stop bar, 23-second through hole, 24-second reinforcing ridge, 201-first reinforcement layer, 202-second reinforcement layer, 3-core layer, 31-aluminum core substrate, 32-first reinforcing ridge, 33-honeycomb partition, 34-first through hole, 4-inner layer, 42-circular groove, 43-third through hole. Detailed Implementation
[0022] The following specific examples illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. This utility model can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this utility model. It should be noted that, unless otherwise specified, the following embodiments and features described therein can be combined with each other.
[0023] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. Therefore, the drawings only show the components related to the present invention and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.
[0024] Example
[0025] like Figures 1-6 As shown, an anti-deformation door structure includes an outer layer 1, with columns 11 at the four corners of the outer layer 1 and threaded holes 12 in the middle of the columns 11; specifically, the outer layer 1 is made of 304 stainless steel plate, and the columns 11 at the four corners are formed by stamping, with threaded holes 12 pre-drilled in the middle.
[0026] The core layer 3 is located inside the outer layer 1. First through holes 34 are provided at the four corners of the core layer 3. The core layer 3 is made of a 5052 aluminum core substrate 31, with honeycomb partition channels 33 etched onto its surface. First reinforcing ridges 32 are also provided on the four sides of the aluminum core substrate 31. The core layer 3 includes the aluminum core substrate 31, on which honeycomb partitions 33 are arranged in an array on both the inner and outer surfaces. The honeycomb partitions 33 are filled with polyurethane foam. The aluminum core substrate 31 and the honeycomb partitions 33 form a dual composite support system, which, combined with the polyurethane foam filling, provides both high compressive strength and excellent sound insulation. The innovative design of the first reinforcing ridges 32 along the four sides enhances the edge bending strength.
[0027] The reinforcement layer 2 is disposed on both sides of the core layer 3, namely the first reinforcement layer 201 and the second reinforcement layer 202; the reinforcement layer 2 is provided with a second through hole 23 at the four corners; the reinforcement layer 2 is made of 6063-T5 aluminum alloy plate, and the second through hole 23 at the four corners is formed by laser cutting, and the hole is chamfered.
[0028] The reinforcing layer 2 includes a reinforcing aluminum plate 21, with a baffle 22 disposed along one edge of the reinforcing aluminum plate 21; second reinforcing ribs 24 are also arranged in rows on the inner side of the baffle 22, and the second reinforcing ribs 24 are configured in an X-shape. Specifically, the X-shaped second reinforcing ribs 24 of the second reinforcing layer 202 form a multi-directional stress dispersion network, which can disperse impact loads in multiple directions compared with traditional straight reinforcing ribs. The closed frame formed by the baffle 22 and the reinforcing aluminum plate 21 improves the rigidity of the overall structure.
[0029] The inner layer 4 is located inside the second reinforcing layer 202. Circular grooves 42 are provided at the four corners of the inner layer 4, and third through holes 43 are drilled through each circular groove 42. The inner layer 4 is made of thick oak solid wood, and the deep circular grooves 42 at the four corners are CNC machined, with the third through holes 43 drilled in the center of each groove.
[0030] The outer layer 1 is made of stainless steel or anodized aluminum alloy; the inner layer 4 is made of solid wood or environmentally friendly composite wood. The outer layer 1 adopts an optimized combination of stainless steel / anodized aluminum alloy and the inner layer 4 environmentally friendly wood. Through the transition design of the reinforcing layer 2, the thermal deformation of the overall structure is reduced.
[0031] In this solution, the standardized through-hole design of each layer enables precise positioning and assembly, improving installation, while ensuring tolerance matching between each structural layer, significantly improving product consistency.
[0032] The above-described embodiments merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.
Claims
1. A deformation-resistant door structure, characterized in that: include Outer layer (1), with columns (11) at the four corners of the outer layer (1), and threaded holes (12) in the middle of the columns (11). The core layer (3) is located inside the outer layer (1); the core layer (3) has a first through hole (34) at each of its four corners. The reinforcement layer (2) is disposed on both sides of the core layer (3), namely the first reinforcement layer (201) and the second reinforcement layer (202); the reinforcement layer (2) is provided with a second through hole (23) at the four corners. The inner layer (4) is disposed on the inner side of the second reinforcing layer (202). Circular grooves (42) are provided at the four corners of the inner layer (4), and a third through hole (43) is provided through the circular grooves (42).
2. The anti-deformation door structure according to claim 1, characterized in that: The core layer (3) includes an aluminum core substrate (31), on which honeycomb partitions (33) are arranged in an array on the inner and outer surfaces, and the honeycomb partitions (33) are filled with polyurethane foam material.
3. The anti-deformation door structure according to claim 2, characterized in that: The aluminum core substrate (31) is also provided with first reinforcing ridges (32) on its four sides.
4. The anti-deformation door structure according to claim 1, characterized in that: The reinforcing layer (2) includes a reinforcing aluminum plate (21), and a baffle (22) is provided on one side of the reinforcing aluminum plate (21) along the edge; a second reinforcing ridge (24) is also arranged in rows on the inner side of the baffle (22), and the second reinforcing ridge (24) is configured as X-shaped.
5. The anti-deformation door structure according to claim 1, characterized in that: The outer layer (1) is made of stainless steel or anodized aluminum alloy; the inner layer (4) is made of solid wood or environmentally friendly composite wood.