WO2024150605A1 - Door - Google Patents

Abstract

Provided is a door comprising a glass plate and a frame for fixing the glass plate. At least a section of the peripheral edge of the glass plate is adhered to the frame via an adhesive layer. The glass plate is fixed to the frame using only the adhesive layer.

Description

Door body

This disclosure relates to a door body.

　Traditionally, front doors have been provided with slits to allow in light, and glass sheets are fixed into the slits. However, to ensure the rigidity of the front door, it is necessary to use thick fixing members for fixing the glass sheets, or to use fixing members made of metal such as iron. This makes it impossible to make the slits larger in area. Furthermore, when fixing the glass sheets into the slits, it is necessary to clamp the glass sheets with fixing members, or to fit the edges of the glass sheets with fixing members. This results in steps being formed due to the fixing members, which detracts from the design of the front door.

Patent Document 1 describes a panel structure in which a rectangular frame is formed by connecting the upper and lower ends of a pair of left and right side frame rods with upper and lower frame rods, and the outer edges of the front and rear faces of the side frame rods and the upper and lower frame rods are provided with longitudinally extending protrusions that protrude in the front-to-rear direction, and individual panels are fitted inside the protrusions on both the front and rear sides of the frame, with connecting means arranged inside the frame to connect the front and rear individual panels.

JP 2005-133476 A

However, the panel structure described in Patent Document 1 is complex and difficult to assemble.

The inventor therefore discovered the challenge of providing a door body that is simple in structure and easy to assemble.

The present disclosure relates to a door body that includes a glass plate and a frame body that fixes the glass plate, and at least a portion of the peripheral edge of the glass plate is adhered to the frame body via an adhesive layer, and the glass plate is fixed to the frame body only by the adhesive layer.

A front view of the entrance door as seen from the outside. FIG. 2 is a diagram showing an example of a vertical cross section of the entrance door of FIG. 1 taken along line AA. FIG. 2 is a diagram showing an example of a cross section along line BB of the front door of FIG. 1. FIG. 2 is a front view showing the glass panels and frame that constitute the entrance door of FIG. 1. 2 is a diagram showing another example of a vertical cross section along line AA of the entrance door of FIG. 1. FIG. 1. FIG. 4 is a diagram showing another example of a cross section along line BB of the front door of FIG. FIG. 1 is a cross-sectional view showing an example of laminated glass.

The embodiments of the present disclosure will be described in detail below with reference to the drawings. As shown in Figs. 1 to 3, entrance doors 11 and 12 as door bodies are provided inside a metal door frame 2 provided in a vertically elongated rectangular opening in the building framework, and are capable of being opened and closed in the indoor and outdoor directions. Here, entrance doors 11 and 12 are a parent door and a child door, respectively.

The door frame 2 is formed from a metal profile and is attached along the inner periphery of the opening. In detail, the door frame 2 is framed in a rectangular shape by an upper door frame 21 that extends horizontally around the upper inner periphery of the opening, a lower door frame 22 that extends horizontally around the lower inner periphery of the opening, and a leading-side vertical door frame 23 and a hanging-side vertical door frame 24 that extend vertically around the left and right inner periphery of the opening. The upper door frame 21, leading-side vertical door frame 23, and hanging-side vertical door frame 24 are each formed into a hollow square shape.

The entrance door 11 comprises a frame body 3 that is housed inside the door frame 2, a glass plate 41 that is arranged on the outdoor side (one side in the thickness direction) of the frame body 3, and a glass plate 42 that is arranged on the indoor side (the other side in the thickness direction) of the frame body 3. The frame body 3 and the glass plates 41 and 42 form a hollow portion S1. In Figs. 2 and 3, X1 and X2 indicate the outdoor side and the indoor side, respectively. The glass plates 41 and 42 are arranged on the outdoor side and the indoor side surfaces, respectively. That is, the frame body 3 is arranged between the glass plates 41 and 42 in the thickness direction. In addition, the small edges of the glass plates 41 and 42 are not covered by the frame body 3. Therefore, no step is formed on the entrance door 11 due to the frame body 3. Therefore, in addition to not impairing the design of the entrance door 11, dust and dirt are less likely to accumulate. The frame body 3 is attached to the hanging side vertical door frame 24 by a hinge 35 so that it can be opened and closed.

The frame body 3 is roughly U-shaped and is framed in a vertically elongated rectangular shape around the four peripheries of the glass plates 41 and 42. At least a portion of the peripheral portions of the glass plates 41 and 42 are bonded to the outdoor side surface and the indoor side surface of the frame body 3, respectively, via the adhesive layer A. In this embodiment, the entire peripheral portion of the glass plates 41 and 42 is bonded to the outdoor side surface and the indoor side surface of the frame body 3 via the adhesive layer A. The glass plates 41 and 42 are fixed to the frame body 3 only by the adhesive layer A. In other words, the glass plates 41 and 42 are not fixed to the frame body 3 by fixing members (e.g., screws) other than the adhesive layer A. Therefore, the front door 11 has a simple structure and is easy to assemble. In addition, the front door 11 can ensure rigidity without relying on the rigidity of the frame body 3. The width of the front door 11 is, for example, 500 mm or more and 1500 mm or less, and the height of the front door 11 is, for example, 1500 mm or more and 3000 mm or less.

The material that constitutes the frame 3 is not particularly limited, but examples include metals such as iron and aluminum, and resins such as polyvinyl chloride (PVC). Of these, resin is preferred from the standpoint of the weight and thermal insulation of the front door 11. Furthermore, using a resin frame 3 improves adhesion to the peripheral edges of the glass plates 41 and 42. This allows the frame 3 to be made thinner, which in turn increases the lighting area.

At least one of the glass plates 41 and 42 is preferably laminated glass. This improves crime prevention and suppresses weather-resistant deterioration of the adhesive layer A. The laminated glass is not particularly limited, but is preferably laminated glass 70 (see FIG. 7) in which a decorative film 73 is sandwiched between two single-pane glass sheets 71A and 71B via intermediate films 72A and 72B. The decorative film 73 further suppresses weather-resistant deterioration of the adhesive layer A. The decorative film is not particularly limited, but examples thereof include wrapping sheets and PET films with UV printing, and may be provided with a pattern or design. It is also preferable that at least one of the single-pane glass sheets 71A and 71B is light-shielding glass. This further suppresses weather-resistant deterioration of the adhesive layer A. Note that the laminated glass 70 does not have to have the decorative film 73, if necessary.

Table 1 shows the evaluation results of the retention rate of the tensile shear adhesive strength (based on JIS K 6850) of the test specimens before and after carrying out a weather resistance test (based on JIS B 7753) for 1000 hours. Here, the test specimens are long glass plates and long resin plates with a thickness of about 2 mm bonded with a modified silicone adhesive so that the adhesive layer is about 1 mm thick. In addition, single glass plate 71A (or 71B) with a thickness of 3 mm, laminated glass 70 with a thickness of 7 mm omitting the design film 73 (hereinafter referred to as transparent laminated glass), and laminated glass 70 with a thickness of about 7 mm using a UV-printed PET film as the design film 73 (hereinafter referred to as UV-printed laminated glass) were used as the long glass plates (see Figure 7). Furthermore, a weather resistance test was carried out using a sunshine weather device, and the tensile shear adhesive strength of the test specimens was measured using a universal testing machine.

Table 1 shows that the test pieces using UV-printed laminated glass and transparent laminated glass have a higher retention rate of tensile shear adhesive strength and suppressed weather deterioration of the adhesive layer compared to the test pieces using single-pane glass.

The front door 11 allows the distance between the glass panels 41 and 42 to be adjusted by changing the thickness of the frame 3. This allows decorative items such as plants or illumination lights, or functional items such as light-adjusting films to be placed in the hollow portion S1. The exterior and interior surfaces of the frame 3 may also be decorated.

The thickness T of the front door 11 is preferably 30 mm or more and 100 mm or less, and more preferably 30 mm or more and 80 mm or less. If the thickness T of the front door 11 is 30 mm or more and 100 mm or less, the insulating effect of the front door 11 is improved. In this embodiment, the thickness T of the front door 11 is the sum of the thickness of the glass panels 41 and 42 and the thickness of the frame body 3 (see Figure 2).

The adhesive layer A contains a cured adhesive. The adhesive is not particularly limited as long as it is capable of adhering at least a portion of the periphery of the glass plates 41 and 42 to the frame 3, but examples of the adhesive include elastic adhesives such as modified silicone adhesives, urethane adhesives, and acrylic adhesives. Among these, modified silicone adhesives are preferred in terms of the breaking elongation of the cured product at low temperatures and durability against temperature changes.

A primer layer may be formed between the adhesive layer A and the glass plates 41 and 42, or between the adhesive layer A and the frame body 3. This can improve adhesion to the glass plates 41 and 42, or adhesion to the frame body 3. Here, the primer layer may contain an ultraviolet absorbing agent. This further suppresses weather deterioration of the adhesive layer A.

Table 2 shows the tensile strength and breaking elongation (based on JIS K 7161-1b) of dumbbell-shaped test pieces (JIS K 6251 type 2) of the cured adhesive at -20°C, 23°C, and 70°C, as well as the evaluation results of the test pieces undergoing repeated heating and cooling tests.

The thermal cycling test was carried out by repeatedly cooling and heating a test piece in which a long glass plate and a long resin plate were bonded. The evaluation criteria for the thermal cycling test were as follows:
OK: There is no peeling between the glass plate and the resin plate, and the glass plate is not broken. NG: There is peeling between the glass plate and the resin plate, or the glass plate is broken.

Table 2 shows that modified silicone adhesives have a greater breaking elongation of the cured product at -20°C and are more durable against temperature changes than urethane and acrylic adhesives.

When a creep rupture test is performed for 8000 hours under the conditions of a temperature range of 23°C to 70°C, a humidity of 50±5% RH, and a load of 5.28×10 ⁻³ MPa, the deformation of the adhesive layer A is preferably 5 mm or less, and more preferably 2 mm or less. When the deformation of the adhesive layer A is 5 mm or less, the durability of the adhesive layer A in a wide temperature range is improved. Here, the load of 5.28×10 ⁻³ MPa corresponds to the load applied to the adhesive layer A when an adhesive layer with a width of 10 mm is formed around the four periphery of the laminated glass 70 using the single glass sheets 71A and 71B with a width of 1000 mm, a height of 2500 mm, and a thickness of 3 mm.

Table 3 shows the evaluation results of creep tests (based on JIS K 6859-1994) on test specimens at temperatures of 23°C, 50°C, and 70°C.

Here, the test specimens were the same as those used to evaluate the retention rate of tensile shear adhesive strength, and transparent laminated glass was used as the long glass plate. The test conditions for the creep test were humidity 50±5% RH and load 5.28×10 ⁻³ MPa. The judgment criteria for the creep test were as follows:
OK: There is no misalignment or peeling between the glass plate and the resin plate. NG: There is misalignment and/or peeling between the glass plate and the resin plate.

From Table 3, it can be seen that when a creep rupture test was carried out for 8000 hours under conditions of a temperature range of 23° C. to 70° C., a humidity of 50±5% RH and a load of 5.28×10 ⁻³ MPa, the adhesive layer did not deform.

Although the entire peripheral area of the glass plates 41 and 42 may be bonded to the frame body 3, it is sufficient that at least a part of the peripheral area of the glass plates 41 and 42 is bonded to the frame body 3. It is preferable that the area in which the ratio of the distances x1 to x4, y1 to y4 from each vertex C1 to C4 of the frame body 3 along each side to the length W and H of each side of the rectangular frame body 3 (see FIG. 4) is 1/10 or more is bonded to the frame body 3. Specifically, it is preferable that the area in which the ratio of the widthwise distance x from the corners C (C1 to C4) of the frame body 3 to the width W of the frame body 3 and the ratio of the heightwise distance y from the corners C (C1 to C4) of the frame body 3 to the height H of the frame body 3 (see FIG. 4) are 1/10 or more is bonded to the frame body 3. This reduces the cost of the front door 11 and simplifies the bonding process. The length of the frame 3 is the length of the front door 11 in the width and height directions.

The width W1 of the peripheral portion of the glass plates 41 and 42 bonded to the frame 3 is preferably 10 mm or more. In other words, the width of the adhesive layer A bonding the frame 3 to the glass plates 41 and 42 is preferably 10 mm or more. This reduces the cost of the front door 11 and allows the frame 3 to be made thinner.

As shown in Figure 3, the frame 3 on the door end side has resin cover materials 313a and 313b attached separately to the outdoor side and indoor side of the U-shaped door end metal core material 311c. As shown in Figure 3, the frame 3 on the hanging base side is in close contact with the outer surface of the U-shaped hanging base metal core material 311d.

As shown in Figures 2 and 3, an upper edge member 6, a lower edge member 7, a door-end edge member 8, and a hanging edge member 9 are provided on each of the four sides of the frame body 3. This prevents damage to the frame body 3, thereby improving the durability of the frame body 3.

As shown in FIG. 2, the upper edge member 6 is made of a thin metal plate. The upper edge member 6 extends over almost the entire length of the frame body 3 in the width direction of the front door 11. The upper edge member 6 is fixed to the upper visible surface of the frame body 3 by the mounting screw SC1.

As shown in FIG. 2, the lower edge member 7 is made of a thin metal plate. The lower edge member 7 extends over almost the entire length of the frame body 3 in the width direction of the front door 11. The lower edge member 7 is fixed to the lower visible surface of the frame body 3 by the mounting screw SC2.

As shown in FIG. 3, the door-end edge member 8 is made of a metal fitting consisting of an extension plate portion 82, a leg plate portion 83, and an attachment plate portion 84. The door-end edge member 8 extends over almost the entire length of the frame body 3 in the height direction of the entrance door 11.

The extension plate portion 82 extends from the leg plate portion 83 toward the leading edge vertical door frame 23 so as to overlap the leading edge vertical door frame 23. A sealing piece 821 that protrudes toward the inside of the room is provided at the tip of the extension plate portion 82. The sealing piece 821 abuts against the leading edge vertical door frame 23 from the outside of the room, thereby sealing the gap between the front door 11 and the leading edge vertical door frame 23.

The leg plate portion 83 extends toward the inside of the room, covering the glass plate 41. The tip of the leg plate portion 83 abuts against the surface of the resin cover material 313a on the outside of the room. The mounting plate portion 84 extends from the extension plate portion 82 toward the inside of the room in the forward direction of the frame body 3. The door end side edge member 8 is formed into an approximately T-shape by the extension plate portion 82, the leg plate portion 83, and the mounting plate portion 84, and therefore has the function of covering and protecting the frame body 3.

As shown in FIG. 3, the hanging edge member 9 is made of a thin metal plate. The hanging edge member 9 extends over almost the entire length of the frame 3 in the height direction of the front door 11. The hanging edge member 9 is fixed to the visible surface of the hanging side of the frame 3 and to the hanging metal core material 311d by the mounting screw SC3.

The front door 12 is attached to the front vertical door frame 23 with hinges 36 so that it can be opened and closed, and an electric lock 37 is installed.

Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the above embodiments, and the above embodiments may be modified as appropriate within the scope of the spirit of the present disclosure. For example, instead of the roughly U-shaped frame body 3, a square frame body 3A having a hollow portion S2 may be used (see Figures 5 and 6).

The door body of the present disclosure is not particularly limited as long as at least a portion of the peripheral edge of the glass plate is adhered to the frame body via an adhesive layer, and the glass plate is fixed to the frame body only by the adhesive layer. For example, the glass plate may be adhered to one of the indoor side and the outdoor side of the frame body. In this case, for example, a wooden board or a metal plate is adhered to the other indoor side and the outdoor side of the frame body. Furthermore, the glass plate does not have to be disposed on the entire surface of the door body. Furthermore, the small edge of the glass plate may be clamped by the frame body.

The door body of the present disclosure may be a door body for a house other than a front door (e.g., a bathroom door, an interior door).

11, 12 Front door, 2 Door frame, 21 Upper door frame, 22 Lower door frame, 23 Vertical door frame at the end of the door, 24 Vertical door frame at the base of the door, 3 Frame, 35, 36 Hinges, 37 Electric lock, 311c Metal core material at the end of the door, 311d Metal core material at the base of the door, 313a, 313b Plastic cover material, 41, 42 Glass panels, 6 Upper edge member, 7 Lower edge member, 8 Door end edge member, 82 Extension plate portion, 83 Leg plate portion, 84 Mounting plate portion, 9 Hanging edge member, A Adhesive layer, S1, S2 Hollow portion, SC1, SC2, SC3 Mounting screw, 70 Laminated glass, 71A, 71B Single-pane glass, 72A, 72B Interlayer film, 73 Design film

Claims (11)

A glass plate and
A frame for fixing the glass plate,
At least a portion of a peripheral portion of the glass plate is bonded to the frame via an adhesive layer,
The glass plate is fixed to the frame only by the adhesive layer. The door body according to claim 1, wherein the frame body includes a resin. The door body according to claim 1 or 2, wherein the glass plate includes laminated glass. The glass plate includes a first glass plate arranged on one side of the frame in a thickness direction, and a second glass plate arranged on the other side of the frame in the thickness direction,
At least a part of a peripheral edge of the first glass plate is bonded to one surface in a thickness direction of the frame,
The door body according to claim 1 , wherein at least a portion of a peripheral edge of the second glass plate is bonded to the other surface of the frame body in the thickness direction. The door body according to claim 4, wherein the edge of the first glass sheet and the edge of the second glass sheet are not covered by the frame body. The door body according to claim 4 or 5, having a thickness of 30 mm or more and 100 mm or less. The door body according to any one of claims 1 to 6, wherein the adhesive layer includes a cured product of a modified silicone adhesive. The door body according to claim 7, wherein the adhesive layer is deformed by 5 mm or less when a creep rupture test is carried out for 8000 hours under conditions of a temperature range of 23° C. or more and 70° C. or less, a humidity of 50±5% RH, and a load of 5.28×10 ⁻³ MPa. The frame is rectangular,
A door body as described in any one of claims 1 to 8, wherein at least a portion of the peripheral portion of the glass plate is an area in which the ratio of the distance from each vertex of the frame body along each side to the length of each side of the frame body constituting the rectangular shape is 1/10 or more. A door body according to any one of claims 1 to 9, in which the width of at least a portion of the periphery of the glass plate is 10 mm or more. The door body according to any one of claims 1 to 10, which is an entrance door.

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