CN100510305C - Door - Google Patents

Abstract

The present invention relates to a door which is protected against being twisted or bent and which is also protected against damage by intruding moisture. The door of the present invention includes a front panel and a rear panel respectively defining a front surface and a rear surface of the door; a pair of horizontal frames fixed between the front panel and the rear panel to upper and lower ends of the front panel and the rear panel, respectively; and A pair of vertical frames are respectively fixed to right and left ends of the front and rear panels between the front and rear panels. Each vertical frame includes an inner frame fixed at the innermost position and made of wood, a middle frame fixed to the outside of the inner frame and made of metal, and a middle frame fixed to the outside of the middle frame and made of synthetic resin. The outer frame, in addition, the inner space formed by the frame between the front panel and the rear panel is filled with a foaming agent to form a foam layer.

Description

Door

field of invention

The present invention relates to a door, and more particularly, to a door capable of preventing deformation caused by external force by forming frames of synthetic resin, wood, and metal materials and forming foam layers between the frames.

Background technique

Currently mass-produced doors generally use synthetic resins to form their frames. However, in the case where the frame is only made of a synthetic resin material, there is a problem in that the door is distorted as a whole. For example, in areas where there is a large temperature difference between the inside and outside of the door, the door can warp and adversely affect product reliability.

In order to compensate for this adverse effect, the frame of the door can be made of synthetic resin and reinforced wood (reinforced wood). However, if the door is used for a long time, the frame may be damaged by moisture penetrating its wooden parts. For example, if the paint or coating agent on the surface of the door peels off due to long-term use, external moisture will invade the interior of the wood. So the problem with that is that this can seriously affect the life and reliability of the door itself.

In addition, although reinforced wood is also used, there are still limitations in the strengthening of the strength of the door itself. That is, since wood has limited strength, it is not sufficient to prevent twisting of wood caused by external force as described above.

Contents of the invention

What the present invention considers is exactly to solve the above-mentioned problem existing in the prior art. It is therefore an object of the present invention to provide a door with relatively improved strength.

Another object of the invention is to provide a door with good thermal insulation.

Yet another object of the present invention is to provide a door that minimizes the intrusion of moisture from the outside.

In order to achieve the above object, according to one aspect of the present invention, it provides a door, including: a front panel and a rear panel, which respectively define the front surface and the rear surface of the door; a pair of horizontal frames, which respectively fixed between the board and the rear board to the upper and lower ends of the front board and the rear board; and a pair of vertical frames respectively fixed to the right ends of the front board and the rear board between the front board and the rear board and the left end, wherein each of the vertical frames includes an inner frame fixed at the innermost position and made of wood, a middle frame fixed to the outer side of the inner frame and made of metal, and a middle frame fixed to the middle frame and an outer frame made of synthetic resin, and wherein an inner space formed by the frame between the front panel and the rear panel is filled with a foaming agent to form a foam layer.

Preferably, the front and rear panels are made of synthetic resin or fiberglass.

More preferably, the middle frame is made of aluminum.

More preferably, the middle frame is formed with an I-shaped portion or the middle frame is formed with a C-shaped portion.

More preferably, the horizontal frame is made of synthetic resin.

More preferably, upper and lower ends of the vertical frame are mounted between the pair of horizontal frames.

More preferably, the inner frame of the vertical frame is made of LVL (laminated wood), wherein a plurality of laminated wood boards are stacked and bonded one on top of another, and the plurality of laminated wood boards are laminated according to Fits right and left.

More preferably, grooves are respectively formed on the front and rear ends of the middle frame along the longitudinal direction thereof; and protrusions to be fitted into the grooves are formed on the front and rear plates, respectively.

According to the present invention thus arranged, it is advantageous in that it can prevent the door from being twisted or bent in the forward and backward directions caused by the external force generated by the temperature difference between the inside and outside of the door, and also prevent Damage to doors caused by moisture ingress. Furthermore, since the thermal insulation in the building can be maximized, its energy saving effect can also be expected.

Brief description of the drawings

The above-mentioned and other purposes, features and advantages of the present invention will become clearer by following descriptions of preferred embodiments of the present invention in conjunction with the accompanying drawings, wherein:

Figure 1 is an exploded perspective view of a door according to the present invention;

Figure 2 is a cross-sectional view of the end of a door according to the invention;

Figure 3 is a cross-sectional view of the end of a door according to another embodiment of the invention; and

Figure 4 is a cross-sectional view of the end of a door according to yet another embodiment of the present invention;

Detailed ways

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

As shown in FIG. 1, the door of the present invention includes a front panel 10 and a rear panel 20 defining its front and rear surfaces, respectively. The front panel 10 and the rear panel 20 may be made of synthetic resin and made into relatively thin panels. The front panel 10 and the rear panel 20 may be made of any kind of synthetic resin as long as it can define a surface having a predetermined strength and preventing the intrusion of moisture.

In addition, from the viewpoint of strength, the front plate 10 and the rear plate 20 are preferably formed by hot-pressing glass fibers. However, from the viewpoint of material, the front panel 10 and the rear panel 20 are not necessarily limited to fiberglass, and may be made of any kind of synthetic resin or reinforced glass fiber synthetic resin. The front panel 10 and the rear panel 20 have substantially the same shape as each other, and may have any shape or pattern on their surfaces.

A pair of horizontal frames 30 a and 30 b and a pair of vertical frames 50 a and 50 b are installed along the edge between the front panel 10 and the rear panel 20 . The pair of horizontal frames 30a and 30b are horizontally installed on the upper and lower ends of the front panel 10 and the rear panel 20, and substantially define the upper and lower ends of the doors, respectively. In addition, the horizontal frames 30a and 30b may be made of synthetic resin, preferably synthetic resin having sufficient strength if possible. The horizontal frames 30 a and 30 b have the same overall horizontal length as the front panel 10 and the rear panel 20 .

In addition, in the case where the horizontal frames 30a and 30b are made of synthetic resin, the frames can have strong resistance against moisture intrusion. But the horizontal frames 30a and 30b can also be made of reinforced wood similarly to the vertical frames described below.

The vertical frames 50a and 50b of the present invention define the right and left frames of the door. The vertical frames 50a and 50b define vertical edges of both sides of the door in a state of being inserted between the horizontal frames 30a and 30b. That is, in a state of being in contact with the right and left ends of the lower surface of the upper horizontal frame 30b and the right and left ends of the upper surface of the lower horizontal frame 30a, the upper and left ends of the vertical frames 50a and 50b The lower ends are preferably supported on horizontal frames 30a and 30b. According to this structure, the inner frame 52 of the vertical frame 50a or 50b made of wood is covered by the horizontal frames 30a and 30b so that the wooden portion of the door is not exposed. An advantage of the invention is therefore that the door is highly resistant to the ingress of moisture.

A pair of vertical frames 50a and 50b of the present invention are installed at right and left positions of the door, and have substantially the same shape as each other. Therefore, only a description based on the vertical frame 50 a placed on the right side visible in the drawing will be given below.

The vertical frame 50a of the present invention includes a wooden inner frame 52 installed at the innermost position, a middle frame 54 that is in contact with the outer side of the inner frame 52 and made of metal, and is installed on the outer side of the middle frame 54 ( That is, the outer frame 56 of the outermost position).

The inner frame 52 is preferably formed of wood having such strength that the entire door will not be twisted by an external force. For this reason, the inner frame 52 is preferably made of wood with sufficient strength in the forward and rearward directions to prevent the door from moving in the forward and rearward directions (ie, toward or away from the interior of the door) in the upright position. deformed. For example, LVL (Laminated Wood) in which a plurality of laminated wood boards are stacked one on top of another and bonded is preferably used as the inner frame 52 . As shown in FIGS. 1 to 3, since the plurality of laminated wood boards are stacked one by one in the transverse direction of the door (ie, in the right and left directions) and bonded, the LVL is Installed to provide significantly high structural strength against door forward and backward bending.

In addition, the middle frame 54 is formed of a metal material to provide sufficient structural strength to prevent the door from bending forward and backward. The middle frame 54 may typically be made of a very high strength metallic material. The middle frame 54 may be formed to have a flat plate shape as shown in FIG. 1 , or may be formed to have an I-shaped or C-shaped portion as shown in FIGS. 2 and 3 . More preferably, the middle frame 54 is made of aluminum among metals in view of light-weight characteristics, structural strength, improved form quality, and the like.

The outer frame 56 is preferably made of synthetic resin to completely prevent moisture from entering the door from the outside. In addition, it is obvious that the outer frame 56 can also be made of synthetic resin containing wood powder or other additives. The outer frame 56 may be mainly made of a material capable of preventing the intrusion of moisture therein, that is, synthetic resin, but it may additionally be made of other materials in consideration of its strength and surface texture.

The term "synthetic resin material" as used herein is meant to include both materials consisting only of synthetic resin and materials having synthetic resin as a main component and containing other additives such as the above-mentioned wood flour.

As described above, the vertical frame 50 a is composed of the inner frame 52 , the middle frame 54 and the outer frame 56 . The inner frame 52, the middle frame 54 and the outer frame 56 are bonded to each other by an adhesive to form a complete vertical frame 50a or 50b as a whole.

Figure 2 is an end cross-sectional view of a sectional door according to the present invention. As shown in this figure, it can be understood that the vertical frame 50 is installed at the edge between the front panel 10 and the rear panel 20 . The vertical frame 50 is composed of an inner frame 52 made of wood, a middle frame 54 made of metal, and an outer frame 56 mainly made of synthetic resin, which are sequentially integrally bonded to each other by an adhesive.

Furthermore, in the embodiment shown in FIG. 2, the middle frame 54 is formed of a metal material, which has an I-shaped portion. The outer frame 56 and the inner frame 52, which engage the outer sides of the middle frame 54 having an I-shaped portion, have vertical grooves at their front and rear ends, so that the outer frame 56 and the inner frame 52 can be completely and simply fixed to the belt. There is a middle frame 54 with an I-shaped portion.

In addition, in the embodiment shown in FIG. 3, it is understood that the middle frame 54 made of a metallic material (preferably aluminum) may be formed to have a C shaped part. In FIG. 3, components other than the middle frame are the same as those of the embodiment shown in FIG. 2, and are denoted by the same reference numerals, respectively.

Additionally, Figure 4 is an end cross-sectional view of a door assembled in accordance with another embodiment of the present invention. As shown in this figure, the front and rear ends of the middle frame 54 of this embodiment have grooves 54a in the vertical direction, so that the protrusions 10a and 20a formed on the front plate 10 and the rear plate 20 can be fixed into the grooves 54a . The groove 54a is formed vertically along the front and rear ends of the middle frame, and the protrusions 10a and 20a are also formed extending in the vertical direction. Since the protrusions 10a and 20a are respectively inserted into the grooves 54a at the front and rear ends of the middle frame 54, easy assembly of the door can be sufficiently ensured, and deformation of the thus assembled door can be strictly prevented. In this embodiment, other parts except the middle frame are the same as those in the previous embodiment.

As mentioned above, if the middle frame 54 is made of metal material and is also formed to have an I-shaped or C-shaped portion or to have grooves at its front and rear ends, it can be fixed to the inner or outer frame from its sides rather easily. . Furthermore, since a sufficient contact area is ensured, the frame can be integrated more easily. In addition, if the middle frame 54 is made of a metal material and also has an I-shaped or C-shaped portion, it can provide more structural strength to prevent the door from bending forward or backward.

As described above, if a pair of horizontal frames 30a and 30b and a pair of vertical frames 50a and 50b are assembled at the edges between the front panel 10 and the rear panel 20, the thus assembled frames have an empty space in the center thereof. Fill this empty space with blowing agent to form a foam layer. This layer of foam helps to strengthen the door and provides better insulation. The foam layer 60 formed inside the door is shown in FIGS. 2 and 3 . In addition, in order to form the foam layer 60, the foaming agent should be injected into the empty space under the condition that the frame assembly is placed in an additional mold while the foaming agent is filled in the empty space of the door. So that the front and rear panels and the frames are sufficient to withstand the foaming pressure.

In addition, if the foaming agent is filled into the inside of the door to completely form the foam layer 60 as described above, the door can be manufactured through exterior trimming. The finishing process may include the steps of cutting the upper and lower ends of the door into precise dimensions, and performing surface treatment by spraying a predetermined colorant on the surface of the door.

After the colorant is sprayed on the surface of the door, the surface with the sprayed colorant may be polished using a soft cloth or the like, thereby further providing a three-dimensional effect to the design or pattern formed on the front panel 10 and the rear panel 20 . This polishing operation allows the colorant to be evenly distributed on the uneven parts of the plate, thereby fully expressing the three-dimensional effect. In addition, after the colorant is sprayed and dried, a predetermined coating agent is sprayed on both surfaces of the door to complete the manufacture of the door.

By using the middle frame 54 made of metal (for example, aluminum) in addition to the wooden inner frame 52, the door of the present invention thus arranged can have sufficient structural strength. In particular, the middle frame 54 can provide sufficient structural strength to prevent the door from being frequently twisted in areas where the temperature difference between indoors and outdoors is too large.

In addition, since the outer frame 56 is mainly made of synthetic resin that prevents the intrusion of moisture into the door, it is possible to prevent the intrusion of moisture, and thus the damage of the door can be prevented.

According to the present invention described above, the following advantages can be expected.

First, since the vertical frame of the door is provided with a middle frame made of metal such as aluminium, it has the advantage that the door is very strong preventing it from bending back and forth. Therefore, since the door can sufficiently withstand an external force caused by a large temperature difference between indoors and outdoors or an unexpected external force applied from the inside and outside of the door, it is possible to prevent damage such as bending or twisting of the door, and The reliability of the product can be further improved.

In addition, preventing damage of the door, such as bending or deformation, means that a gap is substantially not generated between the frames, and thus the heat insulating effect can be maximized. Therefore, it can be further understood that the door of the present invention is very practical from the viewpoint of energy-saving effect.

Furthermore, since the outer frame and the horizontal frame are mainly made of synthetic resin, and these frames define the entire exterior of the door, there is an advantage in that the door is strong enough to prevent the intrusion of moisture.

Obviously, those skilled in the art can make various modifications and changes within the scope of the basic technical spirit of the present invention described above. Accordingly, the scope of the present invention should be interpreted by the appended claims.

Claims (8)

1. A door comprising: a front panel and a rear panel, which respectively define the front and rear surfaces of the door; a pair of horizontal frames secured to upper and lower ends of the front and rear panels, respectively, between the front and rear panels; a pair of vertical frames respectively fixed to right and left ends of the front and rear plates between the front and rear plates so that the upper end of each of the pair of vertical frames is aligned with the a lower surface of one of the pair of horizontal frames is in contact, and a lower end of each of the pair of vertical frames is in contact with an upper surface of the other of the pair of horizontal frames, Each of the pair of vertical frames includes an inner frame fixed at the innermost position and made of wood, a middle frame fixed at the outer side of the inner frame and made of metal, and fixed to the inner frame. the outer side of the middle frame and the outer frame made of synthetic resin, and Wherein the inner space formed by the pair of horizontal frames and the pair of vertical frames between the front plate and the rear plate is filled with a foaming agent to form a foam layer. 2. The door according to claim 1, wherein the front panel and the rear panel are made of synthetic resin or fiberglass. 3. The door of claim 1, wherein the middle frame is made of aluminum. 4. The door of claim 1, wherein the middle frame is formed to have an I-shaped portion. 5. The door of claim 1, wherein the middle frame is formed to have a C-shaped portion. 6. The door of claim 1, wherein the horizontal frame is made of synthetic resin. 7. The door of claim 1, wherein the inner frame of the vertical frame is made of laminated wood, wherein a plurality of laminated wood boards are stacked one on top of the other and bonded, and The plurality of laminated wood boards are laminated according to right and left directions. 8. The door according to claim 1, wherein grooves are respectively formed on the front end and the rear end of the middle frame along the longitudinal direction thereof; into the groove of the protrusion.

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