JP2002276255A - Heat and sound insulating door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easily-manufacturable, inexpensive, light weight heat and sound insulating door having an improved heat and sound insulating property. SOLUTION: This heat and sound insulating door is provided with a honeycomb type paper core 6 having multiple apertures 61 perforated through in the thickness direction. The paper core 6 is arranged inside a frame of a rib 5 constructed of a substantially rectangular frame and put between a pair of surface panels 4 and 4 arranged on thickness-directional both faces. Foaming hard urethane foam 8 applied to the back face of each of the surface panels 4 sticks the surface panels 4 and the paper core 6 together and penetrates into the honeycomb holes 61 in the paper core 6 to form a core material with the paper core 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a door for a building used as a front door of a general house or an apartment house, and more particularly to a heat insulating / soundproof door used in a place requiring heat insulation and soundproofing. It is.

[0002]

2. Description of the Related Art In recent years, comfort in living spaces has been demanded. In order to realize such a comfortable environment, heat insulation performance and sound insulation (sound insulation) performance are indispensable. By improving the heat insulation performance, it is possible to suppress the heat flow into and out of the room, suppress the energy consumption of cooling and heating, and contribute to energy saving and prevention of global warming. Further, the improvement of the soundproofing performance is necessary not only to shut off the outdoor noise, but also to prevent the indoor sound from being emitted outside.

[0003] As a measure against such heat insulation and soundproofing, an entrance door as an opening member having both heat insulating and soundproofing properties has been proposed in addition to the structure of the roof and the wall surface. As one example of this kind of heat insulating / soundproof door, there has been a door in which rock wool or glass wool is put inside the door. Some honeycomb paper cores made of aluminum hydroxide paper and penetrating in the thickness direction and having a large number of openings were placed inside the door, and some were foamed without the paper cores.

[0004]

However, in the case of a door in which rock wool or glass wool is placed inside the door, it is necessary to arrange a large number (for example, about 20) of blocks of such rock wool and the like, and the work is complicated. Met.
In addition, since glass fibers are included, the operator may feel itching.

On the other hand, in the case of a door in which a paper core is simply inserted inside the door, since the honeycomb-shaped opening of the paper core is made only of air, there is an inconvenience that heat can flow through and the sound is easily transmitted. Further, in the case of injecting and foaming the space region with urethane or the like, the number of steps is increased because the injection molding is performed after forming the shape of the door.

The present invention has been made in view of the above circumstances, and a main object of the present invention is to provide a heat insulating and soundproof door for a building which is easy to manufacture, relatively inexpensive and lightweight, and has improved heat insulating and soundproofing properties. To provide.

[0007]

Means for Solving the Problems In order to solve the above problems, a heat insulating / soundproof door of the present invention includes a honeycomb-shaped paper core having a large number of openings penetrating in a thickness direction. , Placed between a pair of front panels provided on both end faces in the thickness direction, adhered to the front panels with foamed hard urethane foam applied to the back of the front panels, and in the honeycomb holes of the paper core, The foamed rigid urethane foam is filled.

Further, the heat insulating / soundproof door of the present invention includes a honeycomb-shaped paper core having a large number of openings penetrating in a thickness direction, and the paper core is provided in a frame of a force bone composed of a substantially rectangular frame. While being arranged, it is arranged and sandwiched between a pair of front panels provided on both sides in the thickness direction, and the foamed rigid urethane foam applied to the back surface of each front panel adheres the front panel and the paper core. And the core material is formed together with the paper core by penetrating into the honeycomb hole of the paper core.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the heat insulating and soundproof door 1 of the present invention will be described in more detail. 1 and 2 show a door with a building frame to which an embodiment of a heat insulating / soundproof door 1 of the present invention is applied. FIG. 1 is a schematic front view, and FIG. 2 is a schematic cross-sectional view. FIG. 3 is a schematic exploded perspective view showing a main part of the door main body 1 of the present embodiment.

The door 1 of this embodiment is used as a front door in a detached house, an apartment house, or the like. As shown in FIGS. 1 and 2, the left side of the door body 1 is rotatably provided on the left vertical frame 21 of the door frame 2 via the hinge 3.
A locking device 11 having a knob is attached to the center of the right side of the door body 1 in the vertical direction. Further, at the center of the door body 1 in the left-right direction, a peephole 12 is provided above, and a mailbox 13 is provided below.

The door frame 2 has a front part 21 which is an open side of the door 1.
a, 22a (the size of the portion formed by the surface facing the door end surface when the door is closed) is the rear portion 21 on the closed side of the door.
It is formed slightly wider than the inner dimensions of b and 22b. That is, the left and right (or upper and lower) frame members 21 and 22 (23, 2
In the distance 4) between the opposing surfaces, a step is formed at the center in the front-rear direction of the door frame 2 so that the front portions 21a and 22a are wider than the rear portions 21b and 22b. In the step between the front part and the rear part, U-shaped grooves 21c and 22c are formed to open forward. The hermetic packing 20 is fitted and attached to the U-shaped grooves 21c and 22c. Therefore, in the closed state of the door 1 suspended from the left vertical frame 21, the hermetic packing 20 abuts along the periphery of the one surface panel 4 of the door 1.

In the heat insulating / soundproof door 1 of the present embodiment, a paper core 6 is disposed in a force bone 5 formed of a substantially rectangular frame. The paper core 6 is housed inside the door 1 by disposing the panel 4.

The force bones 5 are composed of lateral force bones 51 and 52 extending vertically and arranged vertically and longitudinal force bones 53 and 54 extending vertically and arranged left and right. The ends of the power bones 51 to 54 are joined together to form a substantially rectangular frame. Each of the power bones 51 to 54 is made of a material having a substantially U-shaped cross section as shown in FIGS.

As shown in FIG. 2, a pair of front panels 4, 4 arranged on the front and rear surfaces of the door 1 are folded back at their ends (41), and then face inward in the thickness direction of the door 1. The bent portion 42 is bent into an L-shape (42), and the bent portion 42 is fixed to the central piece of the power bone 5. The folded portions 41, which are arranged on the left and right sides of each front panel 4 so as to be separated from each other,
A decorative cover material 7 having a U-shaped cross section is fitted between 41 to form the door 1.

[0015] The paper core 6 housed in the power bone 5 comprises:
It is a core material having a honeycomb structure having a large number of openings 61 penetrating in the thickness direction. The material of the paper core 6 is not limited to aluminum hydroxide paper, and various papers can be used. Since the paper core 6 has a honeycomb structure, it can be compressed and stored in a state where many honeycomb-shaped openings are crushed until it is actually used (at the time of manufacturing a door). can do.

In manufacturing the door 1, first, a foam-type hard urethane foam 8 is applied to the back surface (the inner surface when the door is formed) of each front panel 4. As the foamed rigid urethane foam 8, a two-pack type having a higher reaction rate is preferably used than a one-pack type which is foamed and cured by moisture or the like.

The foaming is started simultaneously with the application of the foamed hard urethane foam 8 (the double-dashed line in FIG. 2 shows the state immediately after the application) to the pair of front panels 4, so that the front panels 4, 4 The paper core 6 is arranged between the four. As a result, a sandwich structure using the paper core 6 as a core material is obtained, and the honeycomb holes 61 of the paper core 6 are in a state of being closed between the pair of front panels 4. And a hot pressing press (for example, about 70 to 80 ° C)
And applying the decorative cover material 7 to the end of the door to complete the process. As a result, the foamed rigid urethane foam 8
Enters the many openings 61 of the paper core 6, is filled and hardened. That is, the foamed hard urethane foam 8 applied to the pair of front panels 4 and 4 respectively enters the holes 61 of the paper core 6. Moreover, the bonding between the paper core 6 and the surface panel 4 is reliably performed by the foamed hard urethane foam 8.

Since the foamed rigid urethane foam 8 is used, it becomes a closed-cell filler instead of open cells as in the case of conventional rock wool. Therefore, excellent effects in heat insulation and sound insulation can be expected. Also, if the foamed rigid urethane foam 8 is made of a material such as self-digestible,
Fire doors (specified fire prevention equipment) with metal frames and panels
Function can also be expected.

As described above, in this embodiment, the front panel 4
The foamed hard urethane foam 8 was applied to each inner surface side while being foamed to form a sandwich structure using the paper core 6 as a core material. Then, while the foamed hard urethane foam 8 is filled inside the paper core 6,
A paper core 6 made of the foamed rigid urethane foam 8
And the front panel 4 were adhered.

As a result, with respect to the heat insulating property, the movement of air can be completely restrained by filling the foamed hard urethane foam 8 inside the paper core 6, so that the heat insulating performance is improved.

As for soundproofing properties, when a sound wave collides with the door 1, the foamed hard urethane foam 8 inside the paper core 6 vibrates and converts sound energy into heat energy and absorbs it. However, the soundproofing performance is improved as compared with the case of the hollow.

Further, conventionally, a paper core is adhered to the surface panel with an adhesive such as urethane or epoxy to form a door, or a welded door having a strong bone without a perper core is formed and then foamed. In this embodiment, the foamed hard urethane foam 8 is used instead of the adhesive, and the paper core 6 and the surface panel 4 are used.
And the foamed hard urethane foam 8 can be filled in the paper core 6. And door 1
Can be reduced in number of manufacturing steps as compared to before.

[0023]

As described in detail above, according to the heat insulating and soundproof door of the present invention, it is easy to manufacture, relatively inexpensive and lightweight,
Heat insulation and sound insulation can be improved.

[Brief description of the drawings]

FIG. 1 is a front view of a door with a building frame to which an embodiment of a heat insulating / soundproof door of the present invention is applied.

FIG. 2 is a cross-sectional view showing the internal structure of the heat insulating and soundproof door of FIG.

FIG. 3 is an exploded perspective view schematically showing a main part of the door main body of FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Door (insulated / soundproof door) 2 Door frame 3 Hinge 4 Surface panel 5 Power bone 6 Paper core 8 Foamed hard urethane foam 61 Opening (honeycomb hole)

Claims (2)

[Claims] 1. A paper core having a honeycomb shape having a large number of openings penetrating in a thickness direction, the paper core being sandwiched between a pair of surface panels provided on both end surfaces in a thickness direction, The foamed hard urethane foam applied to the back surface of the front panel is adhered to the front panel, and the honeycomb hole of the paper core is filled with the foamed hard polyurethane foam. door. 2. A honeycomb paper core having a number of openings penetrating in a thickness direction, wherein the paper core is disposed in a frame of a force bone composed of a substantially rectangular frame, and has both surfaces in a thickness direction. The foamed hard urethane foam applied between the pair of front panels provided on the back surface of each front panel adheres to the front panel and the paper core, and penetrates into the honeycomb holes of the paper core. A heat insulating and soundproof door characterized by comprising a core material together with a paper core.