JP7393265B2 - Cold bend glass unit with metal frame - Google Patents

Description

The present invention relates to a cold bend glass unit that uses a metal frame as a frame for holding the periphery of a glass plate.

A cold bend method is known in which the glass plate is attached to the building frame on site by twisting (bending) the entire sash (frame) or only the glass plate little by little. In particular, as a device that bends only a glass plate, a device such as that disclosed in Patent Document 1 is known, for example.

Japanese Patent Application Publication No. 2017-121804

However, when an aluminum frame made of aluminum, for example, is used as a frame for a glass plate and the glass plate with the frame is made into cold bend glass, it is difficult for the aluminum frame to deform to follow this. In other words, glass can withstand a certain amount of stress, so it twists and bends, but since the aluminum frame is made of metal, it cannot follow this twisting and bending, and the aluminum holder breaks first. or damaged.

The present invention takes the above-mentioned prior art into consideration, and involves twisting or bending a glass plate by a cold bending method while the peripheral edge of the glass plate is held by a metal frame (for example, an aluminum frame). To provide a cold bend glass unit using a metal frame in which the metal frame does not crack or break due to twisting or bending even if it becomes glass.

In order to achieve the above object, the present invention includes a glass plate to be twisted or bent by a cold bend method, and a metal plate arranged along at least one side of the glass plate and sandwiching the periphery of the glass plate. It comprises a metal frame and a frame holder to be attached to a building frame by covering and holding the metal frame, and the metal frames are arranged at intervals along the longitudinal direction of the metal frame and intersect with the longitudinal direction. To provide a cold bend glass unit using a metal frame characterized by having a cut portion formed in the direction.

Preferably, the cut portion is formed in the entire circumferential direction so as to divide the metal frame, and the metal frame is formed with a plurality of frame segments aligned in the longitudinal direction.

Preferably, the cut portion is formed to have a predetermined thickness.

Preferably, the metal frame has an arc-shaped outer peripheral surface in a cross-sectional view, the frame holder has an inner peripheral surface that follows the arc shape of the outer peripheral surface of the metal frame, and the metal frame It can rotate within the frame holder.

According to the present invention, since the metal frame has the cut portion, the glass plate is twisted or bent by the cold bend method to become cold bend glass, and at that time, the metal frame has the cut portion. Even if a force is applied in the twisting direction, the angle of the metal frame at the notch portion can be easily turned in the twisting direction little by little to follow the shape of the cold-bent glass. Therefore, even if a twisting force is applied to the metal frame, the metal frame will not be cracked or damaged.

If the notches are formed all along the circumferential direction of the metal frame so as to divide the metal frame, the metal frame will be made up of multiple frame segments, so each frame segment will be separated by the cold bend method. Twisting and bending are further followed.

In addition, by providing a predetermined thickness at the notch, that is, by creating a gap between the metal frames (frame segments) through the notch, it is possible to assume that a force is applied to the metal frame in the bending direction by the cold bend method. Also, the thickness of this notch (gap) can accommodate changes in the angle of the metal frame due to bending. That is, due to the shape of the cold bend glass, even if a force is applied in such a bending direction, the metal frame will not crack or break.

In addition, by forming the inner circumferential surface of the frame holder to have a circular outer circumferential shape in cross-sectional view in correspondence with the outer circumferential surface of the metal frame, the outer circumferential surface of the metal frame slides on the inner circumferential surface of the frame holder. The metal frame can be rotated within the frame holder. Therefore, when the glass plate is twisted or bent by the cold bend method, it is possible to suppress the load caused by deformation on the metal frame, and it is possible to prevent damage to the metal frame.

1 is a schematic external view of a cold bend glass unit using a metal frame according to the present invention. FIG. 1 is a schematic detailed view of a cold bend glass unit using a metal frame according to the present invention. It is a schematic sectional view showing the relationship between a metal frame and a frame holder. It is a schematic sectional view showing the relationship between a metal frame and a frame holder. It is a schematic sectional view showing the relationship between a metal frame and a frame holder. It is a schematic external view when a glass plate becomes cold bend glass. FIG. 3 is a schematic diagram showing a frame segment. It is a schematic external view when a glass plate becomes another cold bend glass.

As shown in FIGS. 1 and 2, a cold bend glass unit 1 using a metal frame according to the present invention includes a glass plate 2 to be twisted or bent by the cold bend method, and a glass plate 2 along at least one side of the glass plate 2. A metal frame 3 made of metal is arranged. Aluminum can be used as a specific material. The metal frame 3 holds the periphery of the glass plate 2. Specifically, a sealing body 6 made of an elastic material is interposed between the metal frame 3 and the glass plate 2, the sealing body 6 clamps the periphery of the glass plate 2, and the metal frame 3 It covers and holds the seal body 6. Therefore, the seal body 6 has a concave shape that sandwiches the periphery of the glass plate 2, and the periphery of the glass plate 2 is fitted into this concave portion. The metal frame 3 also has a concave shape to sandwich the seal body 6, and the seal body 6 is fitted together with the glass plate 2 into this concave portion.

In the illustrated example, the metal frame 3 is arranged to extend in a direction perpendicular to the left and right sides of the glass plate 2. The glass plate 2 used in the present invention may be any glass plate to which the cold bend method can be applied, and in addition to paired glass as shown in the figure, single glass and laminated glass are also applicable. In the figure, double glass is shown as glass plate 2, so two single panes of glass are arranged with an air layer in between, and a spacer (not shown) and a sealing material (not shown) are arranged around the double glass. There is. Further, the cold bend glass unit 1 further includes a frame holder 4 that covers the metal frame 3. This frame holder 4 is to be attached to a building frame 5 while holding the metal frame 3 (the figure shows H steel as an example of the building frame 5).

A notch 7 is formed in the metal frame 3. The notches 7 are arranged at intervals along the longitudinal direction of the metal frame 3, and are formed in a direction intersecting the longitudinal direction of the metal frame 3 (horizontal direction in the figure). In the illustrated example, the notches 7 are formed all over the circumferential direction of the metal frame 3 so as to divide the metal frame 3. As a result, the metal frame 3 is formed with a plurality of frame segments 8 lined up in the longitudinal direction. A long metal frame 3 is formed by a series of such frame segments 8. By forming the metal frame 3 with a plurality of frame segments 8 in this manner, each of the frame segments 8 can be arranged facing at a different angle. That is, each frame segment 8 can take a different rotation angle with the longitudinal direction of the metal frame 3 as the axial direction. Thereby, even if the glass plate 2 is turned into cold bend glass by the cold bend construction method, the metal frame 3 itself can follow the twist so as to allow it.

Note that the cut portion 7 may not be formed over the entire circumference of the metal frame 3, but may be formed only on a part of the metal frame 3. In other words, even if the metal frame 3 is not completely divided to form the frame segments 8, by forming the notches 7 within a certain range, the metal frame 3 can be deformed to follow the twisting of the cold bend glass. be able to. This prevents the metal frame 3 from being cracked or damaged.

In this way, if the notch 7 is provided in the metal frame 3 like the cold bend glass unit 1 using the metal frame according to the present invention, the glass plate 2 can be twisted or bent by the cold bend method. Even if a force is applied along the longitudinal direction of the metal frame 3 in the twisting direction, the metal frame 3 will easily change the angle little by little at the notch 7 in the twisting direction. It can be made to follow the shape of cold bend glass by oriented toward Therefore, even if a twisting force is applied to the metal frame 3, the metal frame 3 will not be cracked or damaged. Furthermore, if the notches 7 are formed all along the circumferential direction of the metal frame 3 so as to divide the metal frame 3, the metal frame 3 will be formed of a plurality of frame segments 8, so that individual The frame segment 8 further follows the twisting and bending of the cold bend construction method.

Further, as shown in FIGS. 3 to 5, the metal frame 3 has an arc-shaped outer circumferential surface 3a in a cross-sectional view (viewed from a direction perpendicular to the longitudinal direction). On the other hand, the frame holder 4 has an inner peripheral surface 4a that follows the arc shape of the outer peripheral surface 3a of the metal frame 3. Therefore, the outer circumferential surface 3a and the inner circumferential surface 4a have an arc shape along the circumference of a concentric circle and approximately the same diameter (the inner circumferential surface 4a has a slightly larger diameter than the outer circumferential surface 3a). The outer circumferential surface 3a and the inner circumferential surface 4a are slidable relative to each other, so that the metal frame 3 can rotate within the frame holder 4. In the diagram, the state shown in FIG. 4 is a state in which the glass plate 2 is parallel to the building frame 5, and the glass plate 2 is bent by the cold bend method and the glass plate 2 is screwed outward relative to the building frame 5. FIG. 3 shows an example where the screw is twisted inward to the building frame (towards the building frame 5), and FIG.

In this way, by forming the inner circumferential surface 4a of the frame holder 4 to have a circular outer circumferential shape in a cross-sectional view in correspondence with the outer circumferential surface 3a of the metal frame 3, the outer circumferential surface 3a of the metal frame 3 is shaped like a frame holder. The metal frame 3 slides on the inner peripheral surface 4a of the frame holder 4 and becomes rotatable within the frame holder 4. Therefore, when the glass plate 2 is twisted or bent by the cold bend method, it is possible to suppress the load caused by deformation on the metal frame 3, thereby preventing damage to the metal frame 3. I can do it. This, together with the formation of the notch 8 in the metal frame 3 as described above, can be said to be a further ingenuity to support the cold bend construction method. By doing so, as shown in FIG. 6, even if the glass plate 2 is twisted or bent to become cold bend glass, the metal frame 3 (frame segment 8) having the notch 8 can be Since the metal frame 3 is twisted following this, and the metal frame 3 itself is also rotated within the frame holder 4 to follow this, no unreasonable force is applied to the metal frame 3, and damage to the metal frame 3 can be prevented. Note that the frame holder 4 is securely fixed to the building frame 5 with bolts 9. Furthermore, a sealing material 10 is formed between the outer surface of the glass plate 2 and the frame holder 4 to prevent dust from entering. A metal frame 3 is exposed between the inner surface of the glass plate 2 and the frame holder 4. By widening the width of the frame holder 4 in this way, it is possible to prevent the frame holder 4 and the glass plate 2 from coming into contact when the glass plate 2 is deformed. Furthermore, when the glass plates 2 are lined up to form the outer wall of a building as shown in this example, the frame holder 4 that holds the periphery of the adjacent glass plates 2 is used to prevent dust from entering. A sealing material 11 is placed between them.

As is clear from FIG. 7, the notch 7 may be formed to have a predetermined thickness. Here, the predetermined thickness of the notch 7 means that a gap 12 is provided between the metal frames 3 (frame segments 8) with the notch 7 interposed therebetween. This gap 12 is formed to gradually widen toward one side of the metal frame 3 (extends from one side of the metal frame 3 to the other side, and increases in thickness toward its tip. The notch 7) is formed so that it gradually narrows. That is, the gap 12 has a so-called wedge shape when viewed from the side. As a result, even if a force is applied to the metal frame 3 in the bending direction by the cold bend construction method, the thickness of the notch 8 (gap 12) can accommodate changes in the angle of the metal frame 3 due to bending. That is, due to the shape of the cold bend glass, even if a force is applied in such a bending direction, the metal frame 3 will not be broken or damaged. Specifically, if the gap 12 is formed so as to expand outward with respect to the building frame 5, as shown in FIG. will also be available.

In the present invention, when the glass plate 2 is twisted by the cold bend method, the metal frame 3 follows this by twisting or rotating, and when the glass plate 2 is bent, the gap 12 is shortened to follow this. This is to realize the following. As described above, the present invention is a very useful technique when constructing curtain walls and various buildings using cold bend glass using the cold bend construction method.

Reference Signs List 1: cold bend glass unit using a metal frame, 2: glass plate, 3: metal frame, 3a: outer peripheral surface of metal frame, 4: frame holder, 4a: inner peripheral surface of frame holder, 5: building frame, 6 : Seal body, 7: Notch, 8: Frame segment, 9: Bolt, 10: Seal material, 11: Seal material, 12: Gap

Claims (4)

A glass plate to be twisted or bent by cold bending method,
a metal frame arranged along at least one side of the glass plate and sandwiching the periphery of the glass plate;
a frame holder to cover and hold the metal frame and be attached to a building frame;
Cold bending using a metal frame, characterized in that the metal frame has notches arranged at intervals along the longitudinal direction and formed in a direction intersecting the longitudinal direction. glass unit. 1 . The cut portion is formed entirely in the circumferential direction so as to divide the metal frame, and the metal frame is formed of a plurality of frame segments aligned in the longitudinal direction. 10 . A cold bend glass unit using a metal frame as described in . The cold bend glass unit using a metal frame according to claim 1 or 2, wherein the cut portion is formed to have a predetermined thickness. The metal frame has an arc-shaped outer peripheral surface in a cross-sectional view,
The frame holder has an inner peripheral surface that follows the arc shape of the outer peripheral surface of the metal frame,
The cold bend glass unit using a metal frame according to any one of claims 1 to 3, wherein the metal frame is rotatable within the frame holder.

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