JPH0439987Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is made by integrating wooden materials and a metal molded frame, and is used as an opening frame of a building, a window, a door, or a frame of a partition panel. This relates to a composite frame.

(Prior art) Composite frames, which are made by pasting wooden materials onto the surface of a metal molded frame made of aluminum or the like, have traditionally had different appearances on the front and back surfaces, making it difficult to design. It has excellent properties such as the dimensional stability and weather resistance of metal and the heat insulation and anti-condensation properties of wood, so it can be used as a frame for openings in buildings, or for fitting glass or decorative panels into the frame. It is put into practical use as windows, doors, and partition panels.

(Problem that the invention aims to solve) However, wood materials generally have water absorption and moisture absorption properties, and as a result, they expand and contract, resulting in deformations such as twisting and warping. If the wooden material and the metal molded frame were simply integrated by adhesion, they would easily separate at the abutting surfaces, resulting in a lack of durability.

For this reason, the above wood material is attached to a metal molded frame body.
It may be fixed with screws in addition to or in addition to adhesion. However, fixing with screws does not completely integrate the two at the abutting surfaces, and a gap may occur between the two abutting surfaces due to deformation of the wooden material or the like. In this case, condensation water may form on the surface of the metal molded frame, or condensation water formed on the surface of the glass fitted into the frame may enter between the contact surfaces, resulting in a state of water retention on the contact surfaces. As a result, the deformation of the wood material is further accelerated, and wood-decaying fungi propagate, causing discoloration and corrosion, resulting in a deterioration of the aesthetic appearance.In addition, the holding power of the screw decreases, causing the screw itself to fall out. Therefore, it cannot be a fundamental solution to the durability problem of conventional composite frames.

The present invention has been made in view of these points, and its purpose is to realize that, in particular, when acetylation treatment is applied to wood materials, the water absorption and hygroscopicity of the wood materials can be significantly reduced. Based on this focus, the objective is to improve the durability of a composite frame consisting of a wooden material and a metal molded frame.

(Means for Solving the Problem) In order to achieve the above object, the solution of the present invention is a composite frame consisting of a wooden material and a metal molded frame, in which at least one surface of the wooden material is subjected to acetylation treatment. The acetylated surface of the wooden material is brought into contact with the surface of the metal molded frame to integrate the wooden material and the metal molded frame.

(Function) With the above configuration, in the present invention, when the wooden material and the metal molded frame are integrated by adhesion at the contact surface, the acetylation treatment is applied to the contact surface of the wooden material. Since the water absorption and hygroscopicity are significantly lower than that of the wood material itself, expansion and contraction due to water and moisture absorption is effectively suppressed, and the integration with the metal molded frame does not separate.

In addition, even if the wooden material and the metal molded frame are integrated with screws instead of adhesive, the acetylated surface of the wooden material that comes into contact with the metal molded frame may be twisted or warped due to expansion and contraction. Since such deformation hardly occurs, there is no gap between the wooden material and the metal molded frame.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

Figures 1 and 2 show an embodiment in which the composite frame of the present invention is applied to a glass window frame.
is a wooden material framed in a rectangular shape, and the wooden material 1 is made of wood, plywood, LVL, particle board, fiber board, or the like. Reference numeral 2 denotes a metal molded frame body that is in contact with and integrated with the wood material 1, and the metal molded frame body 2 is formed into a rectangular frame shape by extruding or bending metal such as aluminum or steel. The outer peripheral edge of the glass plate 3 is fitted and fixed to the inner peripheral surface of the glass plate 3 through packing materials 4, 4.

As a feature of the present invention, the above-mentioned wooden material 1
is subjected to acetylation treatment on one surface 1a,
The acetylated surface 1a is brought into contact with the surface of the metal molding frame 2 and is integrated with the metal molding frame 2.
Here, when performing acetylation treatment on one surface 1a of the wood material 1, the wood material may be left in the form of a rod, or a veneer,
Acetylation treatment is performed in the form of chips or fibers, and the acetylated wood material is processed as appropriate such as cutting, or the treated wood materials are combined into one, or an acetylated veneer is pasted on the surface of untreated wood material. At least the metal molded frame body 2 is integrated.
A wooden material 1 having a predetermined shape is molded, the contact surface 1a of which has been subjected to acetylation treatment. In addition, acetylation treatment can be carried out, for example, by impregnating and drying the wood material with an aqueous acetate solution such as potassium acetate or sodium acetate in the absence of a catalyst or as a catalyst in advance, and then using an acetylation reaction solution such as acetic anhydride or chloroacetic anhydride. The hydroxyl groups in the wood components are acetylated by immersing them in the wood and heating them.

Furthermore, as a method of integrating the wooden material 1 and the metal molded frame 2, the two may be pasted together with an adhesive such as epoxy resin, urethane resin, or acrylic resin, or the metal molded frame 2 can be integrated as shown in the figure. protruding strip 2
A is provided, and the wooden material 1 is fixed with the screws 5,
It may be fixed to the metal molding frame 2 by... or a combination of both methods may be used.

Therefore, in the above embodiment, the wooden material 1
When integrating the metal molded frame 2 with the metal molded frame 2, acetylation treatment is applied to the contact surface 1a of the wooden material 1 with the metal molded frame 2, and the acetylated surface 1a is applied to the surface of the metal molded frame 2. By making contact with the metal molding frame 2 and integrating the two, the area where the wooden material 1 contacts the metal molded frame 2 is significantly less susceptible to expansion and contraction due to water absorption (approximately 1/5 to 1/5) compared to non-acetylation treatment. 1/20) will decrease.

Therefore, when the wooden material 1 and the metal molded frame body 2 are integrated by adhesion, the wooden material 1 and the metal molded frame body 2 are It is possible to improve durability without separating the product from the product. Furthermore, even when the wooden material 1 and the metal molded frame 2 are fixed and integrated with screws 5 instead of being attached, the expansion and contraction of the wooden material 1 causes the wooden material 1 and the metal molded frame 2 to
Since there is no gap between the contact surfaces with the glass plate 3, the generation of condensation water on the contact surfaces and the glass plate 3
It is possible to prevent the screws 5 from coming off and the growth of wood-decaying fungi due to the intrusion of condensed water, and it is possible to improve durability while improving the aesthetic appearance.

Note that the present invention is not limited to the above-mentioned embodiments, but includes various other modifications. For example, in the above embodiment, only the contact surface 1a of the wooden material 1 with the metal molded frame 2 was acetylated, but the entire surface of the wooden material 1 may be acetylated. It is possible to further suppress expansion and contraction of the wooden material 1 due to water absorption and moisture absorption, and further improve rot resistance.

In addition, in the above embodiment, the composite frame of the present invention is
Although the case where it is applied to a window frame has been described, it goes without saying that it can also be applied to an opening frame of a building or a frame of a door or partition panel.

(Effects of the invention) As described above, according to the composite frame of the present invention, which is formed by abutting and integrating a wooden material and a metal molded frame, at least the contact surface of the wooden material with the metal molded frame is Since the acetylation treatment has been applied to significantly reduce water absorption and moisture absorption, when a wooden material and a metal molded frame are integrated by adhesion, it prevents the two from peeling off due to water absorption or moisture absorption by the wood material. In addition, when the wooden material and the metal molded frame are integrated with screws, it is possible to prevent the formation of gaps at the contact surfaces, thereby improving the aesthetic appearance caused by the generation or intrusion of condensed water in the gaps. It is possible to prevent screws from falling out due to deterioration and rot, and therefore, durability can be improved regardless of whether the screws are attached or integrated.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is an enlarged cross-sectional view taken along the - line in FIG. 2, and FIG. 2 is a perspective view of a glass window. 1...Wood material, 1a...Acetylated surface (surface), 2...Metal molded frame body.

Claims (1)

[Scope of utility model registration request] At least one surface of the wooden material is acetylated, and the acetylated surface of the wooden material is brought into contact with the surface of the metal molded frame, so that the wooden material and the metal molded frame are integrated. Composite frame.