High-strength solid wood composite door

By using a combination of a perforated mechanical board, steel frame, and buffer layer in the solid wood composite door, the problem of insufficient core strength is solved, achieving a high-strength, lightweight, and impact-resistant solid wood composite door design.

CN224326216UActive Publication Date: 2026-06-05JIANGSU GUANNIU INTELLIGENT OVERALL HOME CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU GUANNIU INTELLIGENT OVERALL HOME CO LTD
Filing Date
2025-04-27
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing solid wood composite doors have relatively weak core strength. Using stronger filling materials results in heavy doors, high costs, and difficult processing.

Method used

The door core is made of a bridge-shaped mechanical board with a steel frame embedded inside. The outer side is equipped with a buffer layer and a composite reinforcement layer, including a composite layer of fiberglass mesh and polyurethane adhesive, as well as polyurethane foam filler, to enhance the structural strength and impact resistance of the door core.

Benefits of technology

It improves the door's impact resistance, reduces weight, lowers noise transmission, enhances the door's overall performance and resistance to deformation, while maintaining its lightweight and aesthetic appeal.

✦ Generated by Eureka AI based on patent content.

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Patent Text Reader

Abstract

The utility model discloses a kind of high-strength solid wood composite doors, including door body, the frame is equipped in the both sides of door body, solid wood board is equipped in the both sides of door body, the area surrounded by inner frame and solid wood board of door body is door core, door core is bridge hole mechanics board, composite reinforcing layer is equipped between the both sides of bridge hole mechanics board and corresponding solid wood board, several bridge holes are equipped on bridge hole mechanics board, cylindrical steel support is equipped in bridge hole, buffer layer is arranged around the outside of steel support, polyurethane foam filler is filled in steel support.The beneficial effects of the utility model are: the utility model uses bridge hole mechanics board as door core, and inserts steel support therein, can effectively disperse external impact force, improve the impact resistance of door, the overall weight of this structure design door core is reduced, while improving the overall performance of door;Adopt polyurethane foam filler and buffer layer, can effectively reduce the propagation of noise.Excellent anti-deformation performance, composite reinforcing layer improves the bending resistance and tear resistance of door body.
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Description

Technical Field

[0001] This utility model relates to the technical field of composite doors, specifically a high-strength solid wood composite door. Background Technology

[0002] Solid wood composite doors are doors made primarily of wood, plywood, and other composite materials, forming a solid or near-solid shape. The surface layer is a wood veneer or other covering material. The core of solid wood composite doors is often made of pine, fir, or imported filling materials bonded together, with MDF and solid wood veneer applied to the outside. They are manufactured by high-temperature hot pressing and edged with solid wood strips.

[0003] Existing solid wood composite doors mostly use core materials made of filler, which are relatively weak and may be prone to damage during long-term use. However, using stronger filler materials such as solid wood strips, MDF, or steel cores would result in composite doors that are too heavy, costly, and lack lightweight properties. In particular, the processing of MDF and steel cores is more difficult. Utility Model Content

[0004] To address the aforementioned shortcomings, this utility model aims to provide a high-strength solid wood composite door. By reinforcing the filling material, the core strength of the solid wood composite door is effectively enhanced, ensuring both the quality and strength of the door. The technical solution of this utility model is as follows:

[0005] A high-strength solid wood composite door includes a door body with frame sides on both sides and solid wood panels on both sides. The area enclosed by the frame sides and solid wood panels inside the door body is the door core, which is a perforated mechanical board. A composite reinforcing layer is provided between the perforated mechanical board and the corresponding solid wood panels on both sides. The perforated mechanical board has a plurality of perforations, and a cylindrical steel bracket is provided inside each perforation. A buffer layer is surrounded on the outside of the steel bracket, and the steel bracket is filled with polyurethane foam.

[0006] Furthermore, the bridge hole mechanical board is obtained by pressing solid wood chips.

[0007] Furthermore, the buffer layer is a tubular layer structure made of rubber surrounding the steel support.

[0008] Furthermore, the polyurethane foam filler fills the gap between the buffer layer and the steel support and is fitted to the buffer layer.

[0009] Furthermore, the composite reinforcing layer is a composite layer composed of a glass fiber mesh and an adhesive, wherein the adhesive is a polyurethane adhesive.

[0010] Furthermore, the glass fiber mesh has a mesh size of 10mm × 10mm.

[0011] Furthermore, the door body has patterned grooves.

[0012] The beneficial effects of this utility model are as follows: 1. This utility model uses a bridge-hole mechanical board as the door core, and embeds a steel bracket within it, which can effectively disperse external impact force and improve the door's impact resistance. This structural design reduces the overall weight of the door core while improving the overall performance of the door; 2. The use of polyurethane foam filler and a buffer layer can effectively reduce the transmission of noise. Excellent deformation resistance and a composite reinforcing layer (composed of fiberglass mesh and polyurethane adhesive) improve the door's bending and tear resistance; 3. The combination of the steel bracket and the rubber buffer layer allows the door to better absorb and disperse impact force under external force, avoiding damage caused by collisions with hard objects. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a top view of one side of the top of the door body of this utility model;

[0015] Figure 3 This is the steel support structure of the present invention.

[0016] In the diagram: 1-Door body, 2-Frame, 3-Solid wood board, 4-Door core, 5-Composite reinforcement layer, 6-Buffer layer, 7-Polyurethane foam filler, 8-Steel bracket, 9-Patterned groove. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Combination Figures 1 to 3 Shown:

[0019] A high-strength solid wood composite door includes a door body 1, frame 2 on both sides of the door body, solid wood boards 3 on both sides of the door body, and the area enclosed by the frame 2 and solid wood boards 3 on the inner side of the door body 1 is the door core 4, which ensures the overall stability and structural strength of the door body 1. The upper and lower ends of the door body 1 are covered with solid wood veneer.

[0020] The core of the door is a perforated mechanical board, which is made from solid wood chips through pressing.

[0021] This design reduces material weight while maintaining sufficient load-bearing strength by creating hollow structures (bridges) within the wood. The hollow structural panels possess extremely high strength and stability, effectively dispersing pressure under impact, thus enhancing the door's impact resistance and durability. A composite reinforcing layer 5 is installed between the hollow structural panels and the corresponding solid wood panels 3 on both sides. This composite reinforcing layer 5 is a composite layer consisting of a fiberglass mesh and adhesive, using polyurethane adhesive. The fiberglass mesh has a mesh size of 10mm × 10mm, providing excellent tensile strength. The polyurethane adhesive bonds it to the door body, enhancing the door's bending resistance, tear resistance, and structural stability.

[0022] The door's structural slab has several openings, each containing a cylindrical steel support frame 8. A buffer layer 6 surrounds the steel support frame 8; this buffer layer is a tubular rubber structure encircling the steel support frame 8. The steel support frame is filled with polyurethane foam filler 7. The polyurethane foam filler fills the gap between the buffer layer 6 and the steel support frame 8 and adheres to the buffer layer 6. The internal steel support frame 8 enhances the door's strength, allowing it to withstand greater impacts and pressure. The buffer layer (a tubular rubber structure) effectively absorbs external impacts. The polyurethane foam filler not only provides additional cushioning, further reducing vibration and impact, but also enhances the door's sound insulation, providing a more comfortable user experience.

[0023] The door body 1 has patterned grooves 9, which increases the door's decorative appeal and enhances its aesthetics, while also strengthening its resistance to deformation. By optimizing the surface structure, the patterned grooves can effectively disperse stress under load, reducing deformation caused by localized stress. The specific structure can be designed by those skilled in the art based on actual needs.

[0024] Working principle:

[0025] This practical door is constructed from solid wood panels and a frame. The frame structure enhances the door's stability. Both sides of the door are made of solid wood panels, while the core uses a perforated structural board. The perforated structure reduces material weight, and the steel frame is embedded within the perforated core, enhancing the door's strength and durability. The steel frame itself possesses extremely high compressive and tensile strength, effectively withstanding external impacts. A buffer layer surrounds the steel frame, employing a tubular rubber structure to provide cushioning when the door is impacted, absorbing external force and reducing its transmission, thus protecting the door's structure from damage. The composite reinforcement layer is a composite material made of fiberglass mesh and polyurethane adhesive, further strengthening the door's structure. The fiberglass mesh provides excellent tensile strength, and polyurethane foam filler inside the steel frame provides further cushioning. Simultaneously, the elasticity of the polyurethane foam effectively absorbs and disperses external impacts, reducing noise transmission and increasing the door's sound insulation performance.

[0026] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high-strength solid wood composite door, characterized in that: The door includes a door body (1), with a frame (2) on both sides of the door body (1) and solid wood boards (3) on both sides of the door body (1). The area enclosed by the frame (2) and the solid wood boards (3) inside the door body (1) is the door core (4). The door core (4) is a bridge hole mechanical board. A composite reinforcement layer (5) is provided between the two sides of the bridge hole mechanical board and the corresponding solid wood boards (3). The bridge hole mechanical board has several bridge holes. A cylindrical steel support (8) is provided inside the bridge hole. A buffer layer (6) is provided around the outside of the steel support (8). The steel support (8) is filled with polyurethane foam filler (7).

2. The high-strength solid wood composite door according to claim 1, characterized in that: The bridge hole mechanical board is made of solid wood chips through pressing.

3. A high-strength solid wood composite door according to claim 1, characterized in that: The buffer layer (6) is a tubular layer structure made of rubber surrounding the steel support (8).

4. A high-strength solid wood composite door according to claim 1, characterized in that: The polyurethane foam filler (7) fills the gap between the buffer layer (6) and the steel bracket (8) and is fitted to the buffer layer (6).

5. A high-strength solid wood composite door according to claim 1, characterized in that: The composite reinforcing layer (5) is a composite layer composed of glass fiber mesh and adhesive, wherein the adhesive is polyurethane adhesive.

6. A high-strength solid wood composite door according to claim 5, characterized in that: The glass fiber mesh has a mesh size of 10mm × 10mm.

7. A high-strength solid wood composite door according to claim 1, characterized in that: The door body (1) has a patterned groove (9).