Building materials

The detachable metal boxes with interlocking design in the door body allow for easy transport and assembly, addressing the weight and size issues of conventional metal doors, enhancing transportability and ease of handling.

JP7736975B2Active Publication Date: 2025-09-10SHUTO EXPRESSWAY FACILITY MAINTENANCE CO LTD +1
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Patent Information

Application Number
JP2024002383
Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
Filing Date
2024-01-11
Publication Date
2025-09-10
Estimated Expiration
2044-01-11

AI Technical Summary

Technical Problem

Conventional metal doors are difficult to transport due to their weight and size, especially in narrow spaces or via elevators, and cannot be easily disassembled for manual handling.

Method used

The door body is designed with detachable metal boxes filled with soundproofing or heat-insulating materials, allowing it to be disassembled for transport and featuring interlocking protrusions for easy assembly, reducing weight and maintaining structural integrity.

Benefits of technology

Enables manual transport and elevator use, while maintaining soundproofing and heat-insulating properties, and facilitating easy assembly and disassembly for convenient handling.

✦ Generated by Eureka AI based on patent content.

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Abstract

To provide a fixture that can be disassembled for easy loading and unloading, allowing for manual carrying, and especially enabling loading and unloading via an elevator, which was difficult with a conventional one-piece unit due to its weight.SOLUTION: A door body 2 comprises surface materials 3 with metal boxes 4 detachably arranged between them as cassette boxes.SELECTED DRAWING: Figure 1
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Description

[Technical Field]

[0001] The present invention relates to a door body such as a steel door used as a fixture. [Background technology]

[0002] As described in the following patent documents, a metal door device, which is a fixture, consists of a vertically rectangular door frame 1 and a door body 2 that opens and closes the opening formed by the door frame 1, as shown in Figures 7 and 8. [Patent Document 1] Patent No. 7236903

[0003] The door body 2 is composed of a metallic (typically steel) surface material 3 that forms the outer surface of the door body 2, a metallic (typically steel) aggregate (not shown), and a filler (not shown) that fills the internal space of the door body 2.

[0004] The door frame 1 that houses the door body 2 is a four-sided frame formed in a vertical rectangular shape by an upper frame 10, a lower frame 11, a door-front vertical frame 12, and a door-back vertical frame 13.

[0005] The filler is a sound-insulating or heat-insulating material, and can be formed from, for example, calcium silicate board, rock wool, glass wool, lightweight aerated concrete panel (ACL panel), gypsum board, fiber-reinforced cement board, or a combination of one or more of the above.

[0006] The door body 2 is rotatably supported on the trailing edge vertical frame 13 of the door frame 1 by a hinge 25 provided at the trailing edge portion.

[0007] A handle 26 is provided on the door edge of the exterior facing surface (first facing surface 200 of first surface member 20) and the interior facing surface (second facing surface of second surface member 21) of door body 2. In the drawing, 27A is a keyhole provided on the exterior facing surface. Summary of the Invention [Problem to be solved by the invention]

[0008] Although the conventional door body 2 can be removed from the door frame 1 by removing the hinge 25, the door body 2 itself is assembled as a single unit and cannot be disassembled.

[0009] If the door body 2 becomes deformed, damaged, or rusts due to deterioration over time, it will need to be removed from the door frame 1 and replaced. However, if the installation location of the door device including the door body 2 is a tunnel or underground structure, it will be deep underground and the transportation route will be narrow, so it will generally be transported in and out by hand.

[0010] Furthermore, depending on the weight of the fixtures, it may be difficult to transport them using a residential elevator, and in such cases they must be carried manually up the stairs, resulting in heavy labor.

[0011] The object of the present invention is to eliminate the inconveniences of the above-mentioned conventional examples, and to provide a fixture that can be carried in and out in parts, so that it can be transported manually and can also be carried in and out by elevator, which was difficult with the conventional (integral) fixture due to its weight. [Means for solving the problem]

[0012] In order to achieve the above object, first, the present invention provides a cassette box in which metal boxes are arranged between surface materials constituting a door body and are detachably accommodated. , the metal box has a concave and convex shape, and the concave and convex shapes of adjacent metal boxes are engaged with each other; secondly, The metal box is filled with soundproofing or heat insulating materials such as glass wool. Third, The surface material is made of punched metal, and the holes made by the punched metal of the surface material are shielded by a metal box.

[0013] According to the present invention described in claim 1, the surface material that constitutes the door body and the metal box placed between these surface materials can be separated for transporting in and out, making it possible to transport it manually, and because it is a separated type, it can also be transported in and out by elevator, which was difficult with the conventional (integrated) type due to its weight.

[0014] Also, because it is a split type, it can be adapted to large building materials.

[0015] Furthermore, by placing a metal box between the surface materials that make up the door body, the metal box acts as a frame, thereby maintaining the strength of the door body.

[0016] Also, The metal box has recesses and protrusions that can be interlocked with each other, making the cassette shape interlocking, which makes loading on-site easy. In addition, the interlocking design ensures dust resistance.

[0017] Claim 2 Description According to the present invention, by filling the interior of the metal box with sound-insulating or heat-insulating material such as glass wool, sound-insulating or sound-proofing performance can be easily added to the door body, and moreover, by enclosing the metal box, sound-insulating or heat-insulating material can be simultaneously arranged inside the door body.

[0018] Claim 3 Description According to the present invention, the surface material is made of perforated metal, which makes it possible to reduce the weight. In addition, the window holes in the perforated metal surface material (skin plate) are closed by the surface of the metal box placed inside, so no gaps are created structurally and the door body maintains its airtightness. [Effects of the Invention]

[0019] As described above, the fixture of the present invention can be disassembled for transport in and out, making it possible to transport it manually and even by elevator, which was difficult with the conventional (integrated) fixture due to its weight. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is a perspective view showing one embodiment of the fitting of the present invention. [Figure 2] FIG. 1 is a perspective view of a metal box filled with a filler material such as glass wool, which is a fixture of the present invention. [Figure 3] 1 is an explanatory diagram showing the mutual connection of metal boxes filled with a filler material such as glass wool in the fittings of the present invention. FIG. [Figure 4] 1 is a front view showing one embodiment of the fitting of the present invention. FIG. [Figure 5] 1 is a perspective view showing an embodiment of the fitting of the present invention in an open state. [Figure 6] FIG. 1 is a front view showing an example of a surface material for a fixture of the present invention. [Figure 7] FIG. [Figure 8] FIG. 10 is a perspective view showing a conventional example. DETAILED DESCRIPTION OF THE INVENTION

[0021] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following describes in detail the preferred embodiments of the present invention with reference to the accompanying drawings. Figure 1 is a perspective view showing one embodiment of the fitting of the present invention, in which reference numeral 2 denotes a door body as the fitting.

[0022] As explained in Figure 7 above, the door body 2 is rotatably supported on the door frame 1 by hinges 25, and the surface material 3 of the door body 2 consists of a first surface material bent into a predetermined shape and a second surface material combined with it, which is formed by bending a stainless steel plate, and when the two are combined together they form a flat rectangular hollow body.

[0023] In this way, there is a gap between the front and rear surface materials 3, and in the present invention, metal boxes 4 are arranged as cassette boxes between the surface materials 3 that make up the door body 2 in place of framework and are detachably stored in place of framework.

[0024] A punched metal having window holes 6 formed by punching is used for the surface material (skin plate) 3 of the door body 2. The window holes 6 (punched shape) of the punched metal can be selected from various shapes such as a honeycomb (hexagonal) as shown in the figure, a round hole, or other design shapes.

[0025] The surface material 3 of the door body 2 consists of a first surface material bent into a predetermined shape and a second surface material combined with it, and is formed by bending a stainless steel plate, and when the two are combined together, a flat rectangular hollow body is formed.

[0026] A punched metal having window holes 6 formed by punching is used for the surface material (skin plate) 3 of the door body 2. The window holes 6 (punched shape) of the punched metal can be selected from various shapes such as a honeycomb (hexagonal) as shown in the figure, a round hole, or other design shapes.

[0027] The metal box 4 is made of the same material as the surface material 3, that is, stainless steel plate, or a different metal material, and is bent to form a rectangular box, with a filler material stuffed inside.

[0028] The filler to be packed into this metal box 4 is a sound-proofing or heat-insulating material, such as calcium silicate board, rock wool, glass wool, lightweight aerated concrete panel (ACL panel), gypsum board, fiber-reinforced cement board, or one or a combination of other materials.

[0029] The metal box 4 has a rectangular parallelepiped shape with a front end surface 4a, a rear end surface 4b, an upper floor surface 4c, and a lower floor surface 4d, and multiple of these can be placed side by side inside the door body 2 with no gaps between them.

[0030] The metal boxes 4 may be arranged either horizontally or vertically between the surface materials 3, but when the metal boxes 4 are placed horizontally, the length of the metal boxes 4, i.e., the dimension between the front end face 4a and the rear end face 4b, should match the width between the front and rear ends of the door body 2.

[0031] Furthermore, the metal box 4 has interlocking projections 5 formed on the upper floor surface 4c or the lower floor surface 4d along the length thereof.

[0032] The unevenness 5 is a rail-like protrusion that fits together when the metal boxes 4 located on the upper and lower stages are combined with each other.

[0033] Figure 3 shows various patterns of the concave and convex portions 5, and various options are available, such as when the fitting shape is one wide and the other narrow (L>l) (pattern a), when both are the same width (L=l) (pattern b), when it is a spigot fitting (pattern c), when it is a sloped notch fitting with a slope halfway through (pattern d), when the entire surface is sloped (pattern e), and when only half is sloped (pattern f).

[0034] The metal boxes 4 are placed between the surface materials 3 through an opening formed on one side of the door body 2, and multiple metal boxes 4 are stacked one on top of the other. The metal box 4 to be placed next slides onto one of the recesses and protrusions 5 as a rail, and they fit together and line up closely.

[0035] In this way, all the metal boxes 4 are detachably housed between the surface members 3 through an opening formed on one side of the door body 2, and the opening is closed with a plate or the like.

[0036] In this way, the metal box 4 is fitted without any gaps between the surface materials 3 of the door body 2 , and the surface of the metal box 4 closes the window hole 6 of the surface material (skin plate) 3 .

[0037] It should be noted that by coloring the metal box 4, the color can be seen through the window hole 6, allowing for variations in design. [Explanation of symbols]

[0038] 1...Door frame 2...Door body 3…Surface material 4...Metal box 4a...front end surface 4b…Rear end surface 4c…Upper floor surface 4d…Subfloor surface 5…Unevenness 6...Window hole 10...Top frame 11…Bottom frame 12...Front vertical frame 13... Vertical frame at the end of the door 20…First surface material 200…1st index page 21…Second surface material 25...hinge 26...Handle 27A…Keyhole

Claims

1. The fitting is characterized in that metal boxes are arranged as cassette boxes and detachably housed between surface materials constituting a door body, and unevenness is formed on the metal boxes, and the unevenness of adjacent metal boxes engages with each other.

2. 2. The fitting according to claim 1, wherein the interior of the metal box is filled with a sound-insulating or heat-insulating material such as glass wool.

3. 3. The fitting according to claim 1 or 2, wherein a perforated metal surface is used, and holes formed by the perforated metal surface are shielded by a metal box.

Citation Information

Patent Citations

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