JP2005105580A - Door panel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a door panel reducing the increase of the weight of the door panel itself to the minimum although it has a high crime preventive function against hole forming action and to provide a door panel making no bothersome manufacture. <P>SOLUTION: A rigid reticulate material 9 is disposed in a state separated from the obverse and reverse materials 3, 4 in a space S of a door panel 1 in which core material is intervened in the space S between the obverse and reverse face materials 3, 4. The core material is an injection foamed body 8 of urethane or the like. The rigid reticulate body 9 is unified with the core material by filling the injection foaming body 8 in the space S for foaming to fix it to the doorpanel 1. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

The present invention belongs to the technical field of door panels attached to building openings such as houses and apartments.

Doors attached to openings in houses, condominiums, etc. have surface and back materials fixed to both sides of the frame material assembled around the circumference, and the space between the front and back materials is filled with urethane foam or paper core as a core material. What is common is.
In recent years, crimes that infiltrate indoors due to unauthorized unlocking of such doors have frequently occurred, and improvement of the crime prevention property of the doors is required. Recently, various products have emerged to combat such intrusion techniques. For example, a cylinder lock that is very difficult to pick for “picking” has been developed, and a small hole (φ10-20) is made in the door panel, and a thumb-shaped tool is used to unlock the thumb turn inside the room. A two-action thumb turn is effective for “turning the thumb turn”. For example, a sickle-lock-type locking device that is strong against a forcible opening by “bar”. It is countered by using.

However, recently, the intrusion technique has also become rough, and apart from the above-mentioned technique, a through-hole (φ90-100) large enough to allow a hand to enter the door panel using an electric or manual drill (hole saw). There is a formidable intrusion technique that opens or cuts with a hammer and directly unlocks the thumb turn on the inside of the room to enter the room. To counter this, it is conceivable to increase the thickness of the front and back materials, but this will not only reduce the workability in the manufacturing process, but also limit the design properties such as shape and design. There was a problem.
As a solution to this problem, a metal plate having a thickness from the inside of the door panel along the front and back surfaces is provided on the entire surface of the door panel. (Patent Document 1)
No. 6-16057

However, in the conventional method, since a metal plate having a plate thickness is provided on almost the entire surface of the door panel along the inner surface of the surface material, the door panel itself becomes very heavy. There was a risk that the opening and closing operation could not be performed smoothly. In addition, in order to reduce the weight of the door panel as much as possible, if the metal plate is made small and installed near the locking device, the outer surface of the surface material will be shaded along the shape of the metal plate. There is a problem to be solved by the invention.
In addition, when filling the space between the front and back surfaces with an injection foam such as urethane foam and adopting it as a core material, it is positioned so as to be separated from the surface material in order to prevent the surface material from being shaded. If the metal plate is provided, the injection material cannot be neatly filled into the space portion of the door panel and cannot be filled, and there is also a problem to be solved by the present invention.

The present invention has been created in view of the above circumstances and has been created for the purpose of solving these problems. The invention of claim 1 is characterized in that a core material is interposed in a space between front and back materials. In the door panel, a rigid mesh material is disposed in the space portion in a state of being separated from the front and back materials.
According to a second aspect of the present invention, the core material is an injection foamed body such as urethane, and the rigid mesh body is integrated with the core material by filling the foamed foam into the space and foaming the door panel. It is supposed to be fixed to.

By carrying out the invention of claim 1, it is possible to manufacture a door panel having a high crime prevention property against a punching action without increasing the weight of the door panel itself. Further, the outer surface is not shaded on the front surface material and the back surface material. Further, in the case where the core material is composed of an injection foam, the injection agent can be neatly filled over the entire space formed between the front and back surfaces of the door panel.
According to the invention of claim 2, there is no need for a fixing member or the like for fixing the rigid netting material in the middle of the space portion of the door panel.

Next, embodiments of the present invention will be described with reference to the drawings.
In the drawings, reference numeral 1 denotes a door panel attached to an opening of a house, an apartment, etc. The door panel 1 has a predetermined thickness on a metal quadrilateral frame 2 composed of left and right vertical frames 21 and 22 and upper and lower frames 23 and 24. A metal surface material 3 and a back surface material 4 are stretched from both sides of the metal quadrilateral frame 2 to the entire door surface, and the edges of the front and back surfaces 3 and 4 located at the periphery of the metal quadrilateral frame 2 are made of metal. It is bent along each prospective surface of the four-round frame 2. Further, the edge 5 is fixed to the prospective surface of the metal quadrilateral frame 2 with screws or the like so as to cover the fore ends of the bent front and back materials 3 and 4 over the entire length of each surface. In addition, 6 is a handle, 7 is a key lock on the outdoor side of the door panel 1, and a lock lock with a thumb turn 7 a protruding on the indoor side of the door panel 1. Provided.

As shown in FIG. 2 or FIG. 3, the space S surrounded by the front and back materials 3 and 4 and the metal four-frame frame 2 of the door panel 1 is filled with an injection foam 8 made of foamed urethane or the like. And constitutes the core material of the door panel 1. In addition, between the front and back materials 3 and 4, a rigid mesh material 9 having a predetermined dimension, which will be described later, is in a state of being substantially parallel to the front and back materials 3 and 4 and in contact with or close to the door-end side vertical frame 21. Is provided. Reference numeral 10 denotes a spacer made of styrene foam or the like, 11 denotes a locking portion provided on a side surface facing the space S of the door-end side vertical frame, and the spacer 10 and the locking portion 11 are in the process of manufacturing the door panel 1 of the present invention. In order to hold and temporarily fix the rigid netting material 9 at a predetermined position. In the present embodiment, the rigid mesh material 9 is provided so as to be located in the middle of the thickness direction of the door panel 1, but the door panel 1 of the present invention is not necessarily required, and the front and back surfaces 3 It is only necessary to be provided so as not to come into contact with the inner side surfaces of the front and back materials 3 and 4, and therefore, it is not necessary to provide them in a state parallel to the front and back materials 3 and 4.

Moreover, the area | region which provides the rigid net | network material 9 with respect to the finding surface of the door panel 1 is a range which can put in a hand from the through hole and can operate the thumb turn 7a, when a through hole is opened in the door panel 1. FIG. That is, as shown in FIG. 5, it is necessary to provide in the area | region which can cover the part located in the range of the predetermined radius r centering on this lock 7 (thumbturn 7a). As a result of experiments conducted by the present applicant under various conditions, it was verified that the thumb turn 7a cannot be operated by hand from a position where the predetermined radius is approximately 500 mm or more. Therefore, in the present embodiment, the predetermined radius is set to 500 mm, thereby adopting a rectangular rigid net member 8 having a length of about 1000 mm and a width of about 500 mm. Thus, the increase in the weight of the door panel 1 is minimized as much as possible by minimizing the rigid mesh material 9. Furthermore, as shown in FIG. 2 or FIG. 3, the rigid net member 9 preferably has a shape in which an uneven surface 9a is formed in the thickness direction of the door panel 1 in a cross-sectional view. As a result, the plate thickness t of the rigid net 9 can be made thicker than the material thickness t1, and thus more resistance can be exerted against drilling (hole saw). Further, since the surface of the rigid mesh material 9 is uneven, the cutting edge of the drill (hole saw) does not hit the rigid mesh material 9 evenly, and smooth rotation can be prevented, resulting in drilling by the drill (hole saw). A lot of time can be spent. Moreover, the same effect can be brought about also with respect to the cutting with a gold-cut rivet. Note that steel or stainless steel is suitable for the material of the rigid netting material 9.

Next, the manufacturing procedure of the door panel 1 of the present invention will be described.
First, the four-round frame 2 is formed by assembling the left and right vertical frames 21 and 22, the upper frame 23, and the lower frame 24 in four rounds. Each frame material is fixed by welding or screwing.
Next, the four-round frame 2 is placed on the back material 4, a plurality of spacers 10 are provided on the back material 4, and the rigid mesh material 9 is provided on the vertical frame 21 positioned on the door end side of the door panel 1. The door panel 1 is configured by placing the surface material 3 on the quadrilateral frame 2 and placing it on the spacer 10 while being locked to the portion 11. By doing so, the rigid net member 9 can be temporarily fixed in the space S of the door panel 1 without contacting the front and back surfaces 3 and 4.
Then, in a state where the door panel 1 is pressed by a hot press machine, the nozzle 13 from which the injection foam 8 is ejected is inserted into the nozzle injection port 12 provided in the four-round frame 2 to fill the space S of the door panel 1 with the injection foam 8. In this case, the surface of the rigid mesh material 9 is literally mesh-like, and there is a sufficient gap between the front and back materials 3 and 4, so that the injected foam material 8 is injected into the space S of the door panel 1. In this case, the rigid mesh material 9 is spread over the entire space S without hindering the filling of the injection foam material 8.
Finally, an edge is attached to each prospective surface of the metal quadrilateral frame 2 so as to cover the edge of the bent front and back materials 3 and 4 over the entire length of each surface.

In the door panel 1 configured as described above, a case where a drilling action is actually performed with a drill (hole saw) will be described. First, when drilling is performed at the X portion in FIG. 5, since the rigid mesh material 9 is provided inside the door panel 1, the drill (hole saw) blade is inserted into the rigid mesh during the drilling operation. It becomes caught in the material 9, and the drilling operation by a drill (hole saw) becomes difficult. Further, even if a part of the rigid mesh material 9 is broken, the broken linear mesh material gets entangled with the blade portion, so that further drilling work becomes extremely difficult. Therefore, like the door panel 1 of the present invention, by providing the rigid net member 9 inside, it is possible to exhibit high security against drilling the door panel 1. Moreover, the rigid mesh material 9 becomes a resistance also to the drilling action using a gold cutter, and further drilling work becomes difficult. Needless to say, when the same material and the same size are compared, the rigid net member 9 is sufficiently lighter than the metal plate. In addition, when drilling is performed at the Y portion in FIG. 5, since there is no region of the rigid mesh material 9, there is a high possibility that a through hole can be drilled as compared with a portion with the rigid mesh material 9. The area without 9 is a position far from the position of the thumb turn 7a for unlocking the locking device (a predetermined radius (500 mm in this embodiment) away from the position of the thumb turn 7a). However, the thumb turn 7a cannot be operated, and there is no problem in crime prevention.

Conventionally, a metal plate having a thickness is provided on almost the entire surface of the door panel along the inner surface of the surface material in order to counter the drilling of the door panel. By using it, the door panel with a crime prevention property can be provided without substantially increasing the weight of the door panel 1. Therefore, the opening / closing operability of the door panel 1 is not deteriorated. Furthermore, since the rigid net member 9 is provided in a range where the thumb turn 7a can be operated by inserting a hand from the through hole when the through hole is formed in the door panel 1, an increase in the weight of the door panel 1 can be further suppressed. . Further, when the rigid mesh material 9 is provided in the space S of the door panel 1, since it is provided between the front and back materials 3 and 4 so as not to contact the front and back materials 3 and 4, for example, as in the present embodiment, Even when the rigid net member 9 is provided only in a range where the thumb turn 7a can be reached, the outer portions of the front and back surfaces 3 and 4 are not shaded by the rigid net member 9.

In addition, another advantage of using a rigid mesh material 9 instead of a conventional metal plate as a member that resists drilling of the door panel 1 is that urethane or the like is injected as a core material into the space S of the door panel 1 in the process of manufacturing the door panel 1. When filling the foam 8, unlike the metal plate, the rigid mesh material 9 has a mesh shape, and the injected foam 8 spreads and fills through the mesh portion, so that the space S of the door panel 1 is filled. It is possible to spread throughout the entire area, and unevenness (portion where the injected foam does not spread) does not occur.
Further, since the rigid net member 9 is fixed to the door panel 1 integrally with the injection foam 8 when the injection foam 8 is filled and solidified in the space S, a separate fixing member is provided in the space S in the door panel 1. Such a thing is unnecessary, and the configuration of the door panel 1 is complicated and the production is not complicated.

Front view of door panel Cross section Same longitudinal section Diagram showing door panel manufacturing process Reference front view of door panel Front view of rigid mesh

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Door panel 2 Quadruple frame 3 Surface material 4 Back surface material 7 Lock lock 7a Thumb turn 8 Injection foam material 9 Rigid net material 10 Spacer 11 Locking piece

Claims (2)

A door panel having a core material interposed in a space portion between front and back materials, wherein a rigid mesh material is disposed in the space portion in a state of being separated from the front and back materials. 2. The core material according to claim 1, wherein the core material is an injection foam such as urethane, and the rigid mesh body is integrated with the core material by filling the foamed foam into the space and foaming, and is fixed to the door panel. A door panel characterized by being made.

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