JP7474097B2 - Sash frames, opening structures, and buildings - Google Patents

Description

The present invention relates to a sash frame installed in an opening in a building, an opening structure, and a building.

Conventionally, sash frames are installed in openings, such as windows in buildings, and form part of the opening structure. The sash frame is made up of a pair of vertical frames located on the left and right and extending vertically, and a pair of horizontal frames located above and below and extending horizontally, framed in a rectangular shape. In addition, the connection between the vertical and horizontal frames located at the corners of the sash frame is connected with the end face of the losing frame material butted against the side of the winning frame material.

In addition, at the connection between the vertical and horizontal frames of such sash frames, a sealer member (sealing material) is sandwiched between the connecting surfaces of the vertical and horizontal frames to fill the gap and improve watertightness, forming a watertight line (see Patent Document 1).

Japanese Patent Application Laid-Open No. 10-61347

Here, Figure 7 shows an enlarged view of the connection 12 between the vertical frame 13 and the horizontal frame 14 (bottom frame) in a conventional sash frame 10. This connection 12 has a so-called "vertical lead (vertical through)" connection structure in which the vertical frame 13 is the lead side, and is arranged so that the axial end face 14a of the horizontal frame 14 is butted against the inner surface 13a of the vertical frame 13 via a sealer member 16. The vertical frame 13 and the horizontal frame 14 are fastened together using bolts B.

However, in such a sash frame 10, if the vertical frame 13 is deformed so as to tilt toward the horizontal frame 14 with the connection to the horizontal frame 14 as a fulcrum, as shown by the two-dot chain line in Figure 7, due to, for example, inter-story displacement of the building caused by an earthquake, or shaking during transportation, compressive stress is concentrated on the upper end 16a of the sealer member 16, and there is a risk of unintended excessive crushing deformation or breakage of the sealer member 16. Also, in the opposite direction to the direction shown by the two-dot chain line in Figure 7, if the vertical frame 13 tilts away from the horizontal frame 14 with the connection to the horizontal frame 14 as a fulcrum, a large compressive stress is applied to the lower end 16b of the sealer member 16, and there is a risk of crushing deformation or breakage.

Therefore, the present invention aims to provide a sash frame, an opening structure, and a building that can suppress excessive deformation or damage to the sealer member sandwiched between the vertical and horizontal frames at the connection between the vertical and horizontal frames in the sash frame.

The present invention has been made to solve the above-mentioned problems. The sash frame of the present invention is a sash frame including a vertical frame, a horizontal frame connected to the vertical frame, and a flat-plate-shaped sealer member positioned between the vertical frame and the horizontal frame,
The sealer member is sandwiched between a water stop line forming portion provided on one end surface of the vertical frame or the horizontal frame and the other side surface, and compressed to form a water stop line,
The sealer member has a first material portion and a second material portion,
The first material portion has a higher compressive stiffness than the second material portion,
The first material portion is characterized in that it is provided at a position that does not cross the water stop line.

In the above-mentioned sash frame, the sealer member has a through hole for passing a fastening member for fastening the vertical frame and the horizontal frame,
At least a portion of the first material portion is preferably provided on a periphery of the through hole.

In addition, a sash frame according to another aspect of the present invention is a sash frame including a vertical frame, a horizontal frame connected to the vertical frame, and a flat-plate-shaped sealer member located between the vertical frame and the horizontal frame,
The sealer member is sandwiched between a water stop line forming portion provided on one end surface of the vertical frame or the horizontal frame and the other side surface, and compressed to form a water stop line,
At least one of the vertical frame and the horizontal frame is provided with a protrusion protruding toward the opposing horizontal frame or vertical frame,
The protrusion has a higher compressive stiffness than the sealer member,
The protrusion is characterized in that it is provided at a position that does not cross the water stop line.

In addition, in the above sash frame, it is preferable that the protrusion is provided on the end surface of the vertical frame or the horizontal frame.

In addition, in the above sash frame, it is preferable that at least a portion of the protrusion is provided on the periphery of a fastening hole that holds a fastening member for fastening the vertical frame and the horizontal frame.

In addition, in the above sash frame, it is preferable that the protrusion penetrates the sealer member and abuts against the opposing horizontal frame or vertical frame.

In addition, a sash frame according to another aspect of the present invention is a sash frame including a vertical frame, a horizontal frame connected to the vertical frame, and a flat-plate-shaped sealer member located between the vertical frame and the horizontal frame,
The sealer member is sandwiched between a water stop line forming portion provided on one end surface of the vertical frame or the horizontal frame and the other side surface, and compressed to form a water stop line,
A compression suppression member is disposed between the vertical frame and the horizontal frame,
The compression suppression member has a higher compression stiffness than the sealing member,
The compression suppression member is characterized in that it is provided at a position that does not cross the water stop line.

In addition, in the above sash frame, it is preferable that the compression suppression member is a plate-shaped member that surrounds the fastening member that fastens the vertical frame and the horizontal frame.

The opening structure of the present invention is an opening structure for a building that is characterized by having any of the sash frames described above.

The building of the present invention is also characterized by having the above-mentioned opening structure.

The present invention provides a sash frame, an opening structure, and a building that can suppress excessive deformation or damage to the sealer member sandwiched between the vertical and horizontal frames at the connection between the vertical and horizontal frames in the sash frame.

1 is a front view showing a connection portion of a sash frame according to one embodiment of the present invention; 2 is a side view showing the shape of an end face of a horizontal frame in the sash frame of FIG. 1 . FIG. 2 is a perspective view showing a sealer member in the sash frame of FIG. 1 . FIG. 11 is a side view showing the shape of an end face of a horizontal frame that constitutes a sash frame according to another embodiment of the present invention. FIG. 5 is a front view showing a portion of the horizontal frame of FIG. 4 . 13 is a side view showing an end face of a horizontal frame and a compression suppression member that constitute a sash frame as still another embodiment of the present invention. FIG. FIG. 13 is a front view showing a connection portion of a conventional sash frame.

One embodiment of the present invention will be described in detail below with reference to the drawings. The same reference numerals are used to designate the same components and parts in each drawing.

Figure 1 is a front view showing the connection portion 2 of a sash frame 1 according to one embodiment of the present invention. First, an example of a building to which the sash frame 1 shown in Figure 1 can be attached will be described.

The building of this embodiment is, for example, a two-story house with a steel frame, and is composed of a reinforced concrete foundation, a framework made up of framework members such as columns and beams, and a superstructure fixed to the foundation. Note that the framework members that make up the framework can be standardized in advance, in which case they are manufactured in a factory and then transported to the construction site and assembled.

The framework of the upper structure is composed of multiple columns and multiple beams. Exterior materials that form the outer perimeter wall are placed on the outer periphery of the framework. Furthermore, floor slab materials that form the floor section are placed between the layers of the framework. For example, ALC panels can be used as the floor slab materials, but other materials such as folded plates, extruded cement boards, and wood panel materials can also be used. Furthermore, roof floor slab materials that form the flat roof are placed on the upper part of the framework. ALC panels can also be used for the roof floor slab materials, but they are not limited to ALC panels.

The outer wall of a building can have, for example, an exterior finishing layer made by connecting panel-shaped exterior materials made of lightweight aerated concrete (ALC) with a coating film formed as a waterproof layer on the surface side, an insulating layer made by connecting panel-shaped insulation materials of foamed resin such as phenol foam along the inner surface of the exterior finishing layer, and an internal finishing layer made of a gypsum board and a finishing material such as wall cloth applied to the surface of the gypsum board, but is not limited to this configuration. The outer wall has at least a certain level of waterproof performance.

The sash frame 1 is constructed by framing upper and lower horizontal frames 4 made of shaped material such as aluminum above and below left and right vertical frames 3 made of shaped material such as aluminum. The sash frame 1 is installed along the inner periphery of an opening in a building and constitutes part of the opening structure. In addition to the sash frame 1, the opening structure can include, for example, a connection member for connecting the sash frame 1 to the building's framework, a reinforcing frame member for reinforcing the sash frame 1, an interior material placed on the indoor side of the sash frame 1 to add decorativeness and design, an exterior material placed on the outdoor side, or other members for improving insulation, waterproofing, fire resistance, etc.

The sash frame 1 is installed directly on the structural frame of the building, or indirectly via other members. The sash frame 1 can hold a shoji screen on the inside, which has one or more glass panes and a frame that surrounds and holds the glass panes. The sash frame 1 can have a sliding structure that holds two shoji screens slidably on the inside, or it can have an inward-opening or outward-opening structure that can be opened and closed by swinging displacement using hinges provided on one side of the frame on four sides (top, bottom, left, right), as the fulcrum, or it can have a so-called fixed-fit structure that makes the shoji screen unable to be opened or closed.

The sash frame 1 is made up of vertical frames 3 on the left and right and horizontal frames 4 on the top and bottom that are connected vertically via a sealer member 6, forming a rectangular frame as a whole. Therefore, a connection part 2 is provided at each of the four corners of the rectangular sash frame 1.

The two vertical frames 3 in the sash frame 1 extend vertically and are located on both the left and right sides (horizontally) of the rectangular sash frame 1.

The upper and lower horizontal frames 4 of the sash frame 1 each extend horizontally and are installed between a pair of left and right vertical frames 3. The horizontal frame 4 has an upper horizontal frame that connects the upper ends of the two vertical frames 3, and a lower horizontal frame that connects the lower ends. Note that Fig. 1 shows the connection part 2 on the lower left side of the sash frame 1 as viewed from the front from the outdoor side, and the horizontal frame 4 shown in Fig. 1 is the lower frame, and the vertical frame 3 is the left frame.

The vertical frame 3 and the horizontal frame 4 can each be made of a metal such as aluminum, but are not limited to this and may be made of other metals or resins having a predetermined strength. Furthermore, the vertical frame 3 and the horizontal frame 4 can each be made by combining multiple members made of different materials or the same material.

As shown in FIG. 1, the connection part 2 of this example has a so-called "vertical lead (vertical through)" connection structure in which the vertical frame 3 is the lead frame relative to the horizontal frame 4. That is, the axial end face 4a (small end face) of the horizontal frame 4 is arranged to abut against the inner surface 3a of the vertical frame 3 with the sealer member 6 sandwiched between them. In addition, the vertical frame 3 and the horizontal frame 4 at the connection part 2 are fastened by two bolts B as fastening members. The bolts B penetrate the inner surface 3a (side surface) of the vertical frame 3 and the sealer member 6 and are fastened to the horizontal frame 4. The inner surface 3a of the vertical frame 3 has a through hole 3c for passing the bolts B through, and similarly, the sealer member 6 has a through hole 6c formed in the sealer member 6. The inner surface 3a of the vertical frame 3 in this example is composed of a flat surface as a whole, but is not limited to this and may have a concave or convex portion. The horizontal frame 4 has fastening holes (51a, 52a) for fastening the bolts B.

The vertical frame 3 has a hollow cylinder 3b with a cavity formed therein that extends, for example, in the axial direction (longitudinal direction) of the vertical frame 3. The cross section of the hollow cylinder 3b perpendicular to the axial direction of the vertical frame 3 is in the shape of a closed ring with no gaps around the entire circumference. In this example, the hollow cylinder 3b of the vertical frame 3 is described as being in the shape of a square cylinder with a square cross section, but this is not limited thereto, and it can be in the shape of a polygonal cylinder with a cross section of another polygon, for example.

Figure 2 shows the end face 4a of the horizontal frame 4. The cross-sectional shape of the horizontal frame 4 is not particularly limited, and may be a shaped member having an internal cavity 4b as in this example, or may be a shaped member that does not have an internal cavity 4b.

The horizontal frame 4 is the lower frame of a sliding sash. The horizontal frame 4 has an outer rail 41 that supports the outdoor shoji screen, an inner rail 42 that supports the indoor shoji screen, a screen rail 43 located on the outdoor side of the outer rail 41, and an indoor side wall 44 located on the indoor side of the inner rail 42. The horizontal frame 4 also has a support wall 45 that is connected to the lower ends of the outer rail 41, the inner rail 42, and the screen rail 43, and the indoor side end of the support wall 45 is connected to the indoor side wall 44. The outer rail 41, the inner rail 42, the screen rail 43, and the indoor side wall 44 extend vertically, but may be inclined relative to the vertical direction. The support wall 45 extends horizontally, but may be inclined relative to the horizontal direction.

The horizontal frame 4 has an exterior upright wall 46 on the outdoor side extending downward from the support wall 45, an interior upright wall 47 on the indoor side, an inclined wall 48 connected to the lower ends of the exterior upright wall 46 and the interior upright wall 47, a front wall 49 extending downward from the inclined wall 48, and a lower wall 50 extending from the lower end of the front wall 49 to the indoor side. The exterior upright wall 46, the interior upright wall 47, and the front wall 49 extend vertically, but may be inclined relative to the vertical direction. The inclined wall 48 is inclined downward from the indoor side to the outdoor side. The lower wall 50 extends horizontally, but may be inclined relative to the horizontal direction.

The horizontal frame 4 has a first bolt retaining portion 51 in which a first fastening hole 51a is formed, and a second bolt retaining portion 52 in which a second fastening hole 52a is formed. A female thread is formed on the inner peripheral surface of each fastening hole 51a, 52a. The horizontal frame 4 also has a first protruding wall 53 protruding downward from the inclined wall 48, and a second protruding wall 54 protruding downward from the lower wall 50. The first protruding wall 53 and the second protruding wall 54 extend in the vertical direction, but may be inclined with respect to the vertical direction. The first bolt retaining portion 51 is connected to the connecting portion of the support wall 45 and the inner upright wall 47, and is located below the support wall 45 and on the indoor side of the inner upright wall 47. The second bolt retaining portion 52 is connected to the lower surface of the inclined wall 48. The first bolt retaining portion 51 is located above the second bolt retaining portion 52 and on the indoor side. The positions of the first bolt retaining portion 51 and the second bolt retaining portion 52 can be changed as appropriate. Additionally, the number of bolt retaining portions is not limited to two as in this example, but may be one or three or more.

As shown by the two-dot dashed line hatching in FIG. 2, a water stop line forming portion P is provided on the end surface 4a of the horizontal frame 4. The water stop line forming portion P forms a water stop line L by sandwiching and compressing the sealer member 6 between the inner surface 3a (side surface) of the vertical frame 3. In other words, in the connection portion 2 of the sash frame 1, the water stop line forming portion P is provided on the end surface of the losing frame (end surface 4a of the horizontal frame 4 in this example), and the shape of the water stop line L of the connection portion 2 is determined by the water stop line forming portion P. The water stop line forming portion P is configured so that its entirety is located on the same plane. Note that in this example, the end surface 4a of the horizontal frame 4 is configured so that its entirety is located on the same plane, but this is not limited to this, and there may be partial concave or convex portions.

As shown in Figure 2, the water stop line forming portion P in this example is composed of the end face 4a of the horizontal frame 4 corresponding to the indoor side wall 44 (upper part), the support wall 45 (part of the indoor side), the inner upright wall 47, the inclined wall 48, the front wall 49, and the lower wall 50 (outdoor side part).

The water stop line forming portion P and the water stop line L can be configured as a single line that continues from one end (indoor end P1) to the other end (outdoor end P2). The indoor end P1 of the water stop line forming portion P is located higher than the outdoor end P2. The water stop line forming portion P is also inclined downward from the indoor side to the outdoor side as a whole. The shape of the water stop line forming portion P can be changed as appropriate. The water stop line L corresponding to the water stop line forming portion P can be configured as a single line that continues from one end (indoor end L1) to the other end (outdoor end L2) as shown in FIG. 3. All parts of the sealer member 6 that make up the water stop line L are made of the same material (second material portion 62).

The sealer member 6 is a flat (sheet-like) member having water-stopping properties. The shape of the sealer member 6 corresponds to the outer shape of the end surface 4a of the horizontal frame 4. The sealer member 6 in this example is shaped so as to cover the entire end surface 4a of the horizontal frame 4. The sealer member 6 is sandwiched between the vertical frame 3 and the horizontal frame 4 at each connection portion 2, and is configured to ensure the water-stopping properties of the connection portion 2 by filling the gap between the vertical frame 3 and the horizontal frame 4. The thickness of the sealer member 6 alone before being placed between the vertical frame 3 and the horizontal frame 4 can be, for example, 0.8 mm or more and 2 mm or less, but is not limited to this. In addition, when the sealer member 6 is sandwiched between the vertical frame 3 and the horizontal frame 4 and the bolt B is fastened, the sealer member 6 is moderately compressed, so the thickness of the sealer member 6 in such an installed state can be, for example, about 0.5 mm, but is not limited to this. The sealer member 6 in this example has a constant overall thickness, but may have a thin or thick part.

The sealer member 6 of this embodiment has a first material part 61 and a second material part 62. The first material part 61 has a higher compression rigidity than the second material part 62. In other words, the first material part 61 is made of a material that is less compressible than the second material part 62. The first material part 61 is configured to prevent the second material part 62 of the sealer member 6 from being excessively compressed when the sash frame 1 is deformed. Note that, although the sealer member 6 of this example is configured only of the first material part 61 and the second material part 62, this is not limited to this.

The first material part 61 constituting the sealer member 6 is made of, for example, metal (aluminum, steel, etc.) or a resin material, and the second material part 62 is made of, for example, butyl rubber. The specific material configurations of the first material part 61 and the second material part 62 constituting the sealer member 6 are not particularly limited. In order to ensure the water-stopping properties of the connection part 2, it is preferable that the sealer member 6 is made of a material that is excellent in weather resistance, watertightness, flexibility, and elasticity as a whole.

The manufacturing method of the sealer member 6 is not particularly limited, but for example, the first material part 61 and the second material part 62 may be integrally molded by two-color molding or the like, or the first material part 61 and the second material part 62 which have been molded separately may be joined by adhesion or welding or the like, or the first material part 61 may be joined by fitting it into the second material part 62.

In this example, the first material part 61 extends over the entire thickness of the sealer member 6, but is not limited to this and may be provided over only a portion of the thickness of the sealer member 6.

The first material part 61 is provided at a position that does not cross the water stop line L. The first material part 61 of this example shown in FIG. 3 is provided at a position corresponding to the first bolt holding part 51, the second bolt holding part 52, the first protruding wall 53, and the second protruding wall 54 of the horizontal frame 4 shown in FIG. 2. The position of the first material part 61 is not limited to the illustrated example and can be changed as appropriate as long as it does not overlap with the water stop line L and is in contact (clamped) with the end face 4a of the horizontal frame 4 and the inner surface 3a of the vertical frame 3. It is preferable that the first material part 61 is separated from the water stop line L. With this configuration, the followability (followability to deformation of the vertical frame 3 and the horizontal frame 4) of the sealer member 6 (second material part 62) at the water stop line L can be improved. As a result, the deterioration of the water stop performance at the water stop line L can be suppressed.

The second material part 62 is provided at a position that overlaps at least the water stop line L. In this example, the entire sealer member 6, except for the first material part 61, is composed of the second material part 62. The second material part 62 surrounds the first material part 61.

The sealer member 6 has a through hole 65 for passing a bolt B as a fastening member for fastening the vertical frame 3 and the horizontal frame 4, and at least a part of the first material part 61 is provided on the periphery of the through hole 65. The first material part 61, which corresponds to the position of the first bolt holding part 51 and the second bolt holding part 52, is located on the periphery of the through hole 65.

The sealer member 6 has an indoor portion 63 (the portion above the water stop line L in the sealer member 6 in FIG. 3) and an outdoor portion 64 (the portion below the water stop line L in the sealer member 6 in FIG. 3) that are separated by the water stop line L, and in this example, the entire first material part 61 is disposed in the indoor portion. The outdoor portion 64 is located inside the sash opening (the side of the space surrounded by the sash frame 1) with the water stop line L as the boundary, and the indoor portion 63 is located outside the sash opening (the side of the exterior material where the sash frame 1 is installed).

As described above, the sash frame 1 of this embodiment includes a vertical frame 3, a horizontal frame 4 connected to the vertical frame 3, and a flat sealer member 6 located between the vertical frame 3 and the horizontal frame 4. The sealer member 6 is sandwiched between the water stop line forming portion P provided on one end face 4a of the vertical frame 3 or the horizontal frame 4 and the other side face 3a, and compressed to form a water stop line L. The sealer member 6 has a first material portion 61 and a second material portion 62, and the first material portion 61 has a higher compression stiffness than the second material portion 62, and is provided at a position that does not cross the water stop line L. With this configuration, for example, even if an inter-story displacement occurs in a building due to an earthquake, or the vertical frame 3 is displaced in a direction tilting toward the horizontal frame 4 or the opposite side due to shaking during transportation of the sash frame 1, the compression of the sealer member 6 can be regulated within an appropriate range by the action of the first material portion 61, which has high compression stiffness. This makes it possible to prevent excessive crushing deformation and breakage of the second material part 62 of the sealer member 6.

Therefore, according to the sash frame 1 of this embodiment and the opening structure of a building equipped with the sash frame 1, excessive deformation or damage of the sealer member 6 sandwiched between the vertical frame 3 and the horizontal frame 4 at the connection 2 between the vertical frame 3 and the horizontal frame 4 in the sash frame 1 can be suppressed. As a result, it is possible to suppress a decrease in the watertightness at the watertight line L provided at the connection 2 of the sash frame 1.

In addition, in this embodiment, the first material part 61 can regulate the compression of the sealer member 6 within an appropriate range, so that, for example, when assembling the sash frame 1, it is possible to prevent the bolt B from being tightened too much, which could result in excessive crushing deformation or breakage of the sealer member 6.

When the vertical frame 3 has a hollow tube portion 3b as in this example, the strength of the vertical frame 3 is higher than when the hollow tube portion 3b is not provided, so the vertical frame 3 is less likely to bend or deform. For example, when an earthquake or other event occurs in a building causing inter-story displacement, or when the building is shaken during transportation, the vertical frame 3 will tilt toward the horizontal frame 4 or the opposite side while maintaining a linear shape in the axial direction, and large compressive stress is likely to be applied to the upper end 6a or lower end 6b of the sealer member 6. Therefore, when the vertical frame 3 has a hollow tube portion 3b as in this embodiment, it is particularly effective to provide the sealer member 6 with a first material portion 61 to suppress compression.

In addition, in this embodiment, the sealer member 6 has a through hole 65 for passing a bolt B as a fastening member, and at least a portion of the first material portion 61 is provided on the periphery of the through hole 65. With this configuration, excessive deformation or damage to the sealer member 6 due to, for example, overtightening of the bolt B can be more effectively suppressed.

In addition, in this embodiment, the sealer member 6 has an indoor portion and an outdoor portion that are separated by the water stop line L, and the entire first material part 61 is disposed in the indoor portion. With this configuration, it is possible to more reliably prevent the deterioration of water stop performance at the water stop line L caused by the provision of the first material part 61.

From the viewpoint of appropriately compressing the upper end 6a and the lower end 6b of the sealer member 6, it is preferable that the first material part 61 is located closer to the center in the vertical direction than the upper end 6a and the lower end 6b of the sealer member 6.

Below, other embodiments of the present invention will be described. Note that parts that have the same basic functions as the above-mentioned embodiment will be given the same reference numerals in the drawings and will not be described. Figure 4 is a side view showing the end face shape of the horizontal frame 4 that constitutes the sash frame 1 as another embodiment, and Figure 5 is a front view of the horizontal frame.

The end surface 4a of the horizontal frame 4 shown in Figures 4 and 5 is provided with a protrusion 55 that protrudes toward the inner surface 3a of the opposing vertical frame 3. In this embodiment, instead of the first material portion 61 of the sealer member 6 in the previous embodiment, this protrusion 55 is provided to restrict the compression of the sealer member 6 within an appropriate range. The protrusion 55 is a part of the horizontal frame 4 and can be made of the same material as the horizontal frame 4. The compression stiffness of the protrusion 55 is higher than the compression stiffness of the sealer member 6. In this example, the protrusions 55 are provided on the end surfaces of the first bolt retaining portion 51 and the second bolt retaining portion 52 of the horizontal frame 4.

The protruding height of the protruding portion 55 from the end surface 4a of the horizontal frame 4 is smaller than the thickness of the sealer member 6 alone when not clamped between the vertical frame 3 and the horizontal frame 4. The protruding height of the protruding portion 55 can be set to be equal to or less than the thickness of the sealer member 6 when clamped between the vertical frame 3 and the horizontal frame 4.

The sealer member 6 in this embodiment can be entirely made of the second material part 62. The sealer member 6 in this example has a through hole at a position corresponding to the protrusion 55. As a result, the tip surface 55a of the protrusion 55 of the horizontal frame 4 penetrates the sealer member 6 and directly contacts the inner surface 3a of the vertical frame 3.

The sealer member 6 may be sandwiched between the tip surface 55a of the protrusion 55 of the horizontal frame 4 and the inner surface 3a of the vertical frame 3. In this case, the sealer member 6 is crushed to a greater extent than the periphery of the protrusion 55. The sealer member 6 may also be configured to have a first material portion 61 and a second material portion 62, as in the previous embodiment.

As described above, the sash frame 1 of this embodiment includes a vertical frame 3, a horizontal frame 4 connected to the vertical frame 3, and a flat sealer member 6 located between the vertical frame 3 and the horizontal frame 4. The sealer member 6 is sandwiched between the water stop line forming portion P provided on the end face 4a of either the vertical frame 3 or the horizontal frame 4 and the other side face 3a, and compressed to form a water stop line L. At least one of the vertical frame 3 or the horizontal frame 4 is provided with a protrusion 55 protruding toward the opposing horizontal frame 4 or vertical frame 3, and the protrusion 55 has a higher compression stiffness than the sealer member 6, and is provided at a position that does not cross the water stop line L. With this configuration, as in the previous embodiment, for example, even if an inter-story displacement occurs in the building due to an earthquake, or the vertical frame 3 is displaced in a direction tilting toward the horizontal frame 4 or the opposite side due to shaking during transportation of the sash frame 1, the compression of the sealer member 6 can be regulated within an appropriate range by the action of the protrusion 55. This makes it possible to prevent excessive crushing deformation and breakage of the sealer member 6.

In this example, the protrusion 55 is provided on the end face 4a of the horizontal frame 4, which is the losing frame. However, for example, instead of the protrusion 55 on the horizontal frame 4, a protrusion may be provided on the inner surface 3a of the vertical frame 3, which is the winning frame, or protrusions may be provided on both the end face 4a of the horizontal frame 4 (losing frame) and the inner surface 3a of the vertical frame 3 (winning frame).

Here, for example, if a protrusion is provided on the inner surface 3a of the vertical frame 3, which is the winning frame, if the position of the horizontal frame 4 relative to the vertical frame 3 shifts, there is a risk that the protrusion of the vertical frame 3 will not be supported by the end surface 4a of the horizontal frame 4, or that the protrusion will overlap the water stop line forming portion P, thereby reducing the water stoppage. In contrast, in this embodiment, by providing a protrusion 55 on the end surface 4a of the horizontal frame 4, which is the losing frame, even if a position shift occurs between the vertical frame 3 and the horizontal frame 4, the protrusion 55 is supported by the inner surface 3a of the vertical frame 3, so that the compression of the sealer member 6 can always be restricted to an appropriate range. In addition, there is no risk of the protrusion 55 overlapping the water stop line forming portion P, so there is no risk of reducing the water stoppage at the water stop line L. In this way, in this example, by providing the protrusion 55 on the end surface 4a of the horizontal frame 4, which is the losing frame, it is possible to more reliably prevent the sealer member 6 from being excessively crushed and deformed, and to ensure water stoppage at the water stop line L.

In addition, in this embodiment, at least a portion of the protrusion 55 is provided on the periphery (first bolt holding portion 51, second bolt holding portion 52) of the fastening hole (51a, 52a) that holds the bolt B as a fastening member for fastening the vertical frame 3 and the horizontal frame 4. With this configuration, excessive deformation or damage to the sealer member 6 due to, for example, overtightening of the bolt B can be more effectively suppressed.

In addition, in this embodiment, the protrusion 55 penetrates the sealer member 6 and abuts against the opposing vertical frame 3. This configuration makes it possible to more reliably prevent a decrease in water-stopping properties caused by deformation of the sealer member 6 compared to when the sealer member 6 is sandwiched between the protrusion 55 and the vertical frame 3.

Figure 6 shows yet another embodiment. In this embodiment, a compression suppression member 70 is placed between the vertical frame 3 and the horizontal frame 4 to restrict the compression of the sealer member 6 to an appropriate range.

6 has a third bolt retaining portion 56 connected to the lower end of the first protruding wall 53. A third fastening hole 56a is formed in the third bolt retaining portion 56, and a bolt B can be fastened therein.

The compression suppression member 70 has a higher compression stiffness than the sealer member 6 and is positioned so as not to cross the water stop line L.

In this embodiment, the compression suppression member 70 is a plate-shaped member that surrounds the bolt B, which serves as a fastening member that fastens the vertical frame 3 and the horizontal frame 4. More specifically, the compression suppression member 70 in this example is a washer having an annular plate shape.

In this example, the compression suppression member 70 is arranged between the end surface 4a of the horizontal frame 4 and the sealer member 6. The compression suppression member 70 may also be arranged between the inner surface 3a of the vertical frame 3 and the sealer member 6. Alternatively, the compression suppression member 70 may be configured to penetrate the sealer member 6. In other words, the compression suppression member 70 may be arranged in a through hole corresponding to the compression suppression member 70 provided in the sealer member 6, and both sides of the compression suppression member 70 may be sandwiched between the inner surface 3a of the vertical frame 3 and the end surface 4a of the horizontal frame 4.

The sealer member 6 in this embodiment can be configured so that its entirety is composed only of the second material part 62. The sealer member 6 can also be configured to have a first material part 61 and a second material part 62, as in the previous embodiment.

As described above, the sash frame 1 of this embodiment includes a vertical frame 3, a horizontal frame 4 connected to the vertical frame 3, and a flat sealer member 6 located between the vertical frame 3 and the horizontal frame 4. The sealer member 6 is sandwiched between the water stop line forming portion P provided on one end face 4a of the vertical frame 3 or the horizontal frame 4 and the other side face 3a, and compressed to form a water stop line L. A compression suppression member 70 is disposed between the vertical frame 3 and the horizontal frame 4. The compression suppression member 70 has a higher compression stiffness than the sealer member 6, and is disposed at a position that does not cross the water stop line L. With this configuration, as in the previous embodiment, for example, even if an inter-story displacement occurs in the building due to an earthquake, or the vertical frame 3 is displaced in a direction tilting toward the horizontal frame 4 or the opposite side due to shaking during transportation of the sash frame 1, the compression suppression member 70 can regulate the compression of the sealer member 6 within an appropriate range. This can prevent the sealer member 6 from being excessively crushed, deformed, or broken.

In this embodiment, the compression suppression member 70 is a plate-shaped member that surrounds the bolt B, which serves as a fastening member for fastening the vertical frame 3 and the horizontal frame 4. This configuration allows the bolt B to suppress misalignment of the compression suppression member 70, and also makes it easier to install the compression suppression member 70.

The shape, number, and position of the compression suppression member 70 can be changed as appropriate. For example, a compression suppression member 70 having a shape similar to the protrusion 55 shown in Figures 4 and 5 may be formed and fixed to the end faces of the first bolt retaining portion 51 and the second bolt retaining portion 52 of the horizontal frame 4 by adhesion, welding, or the like. The compression suppression member 70 is positioned so as not to overlap the water stop line L and so as to be supported by the end face 4a of the horizontal frame 4.

The sash frame and opening structure according to the present invention are not limited to the configuration of the above-mentioned embodiment, and can be realized in various configurations without departing from the scope of the claims. For example, in the previous embodiment, the vertical frame 3 is the winning side of the connection part 2, but it may be configured as a horizontal win, where the horizontal frame is the winning side.

The vertical frame 3 and horizontal frame 4 may each have a portion for improving the insulation and watertightness around the sash frame 1. The portion for improving the insulation and watertightness may be formed by attaching other members. For example, an insulation part made of a resin such as polyvinyl chloride may be attached by fastening it with a fastener such as a screw, or by integrating it by a concave-convex fit.

1: Sash frame 2: Connection 3: Vertical frame (winner frame)
3a: Inner surface (side surface)
3b: Hollow cylinder portion 3c: Through hole 4: Horizontal frame (losing side frame)
4a: End surface 4b: Cavity 41: Outer rail 42: Inner rail 43: Screen rail 44: Indoor side wall 45: Support wall 46: Outer upright wall 47: Inner upright wall 48: Inclined wall 49: Front wall 50: Lower wall 51: First bolt retaining portion 51a: First fastening hole (fastening hole)
52: Second bolt holding portion 52a: Second fastening hole (fastening hole)
53: First protruding wall 54: Second protruding wall 55: Protrusion 55a: Tip surface 56: Third bolt retaining portion 56a: Third fastening hole 6: Sealer member 6a: Upper end portion 6b of sealer member: Lower end portion 6c of sealer member: Through hole 61: First material portion 62: Second material portion 63: Indoor side portion 64: Outdoor side portion 65: Through hole 70: Compression suppression member 10: Sash frame 12: Connection portion 13: Vertical frame (win side frame)
13a: Inner surface of vertical frame 14: Horizontal frame 14a: Tip surface of horizontal frame in the axial direction 16: Sealer member 16a: Upper end portion of sealer member 16b: Lower end portion of sealer member B: Bolt (fastening member)
L: Water stop line P: Water stop line forming part

Claims (6)

A sash frame comprising a vertical frame, a horizontal frame connected to the vertical frame, and a flat sealer member located between the vertical frame and the horizontal frame,
The sealer member is sandwiched between a water stop line forming portion provided on one end surface of the vertical frame or the horizontal frame and the other side surface, and compressed to form a water stop line,
The sealer member has a first material portion and a second material portion,
The first material portion has a higher compressive stiffness than the second material portion,
A sash frame, characterized in that the first material part is provided at a position where it is clamped between the vertical frame and the horizontal frame and at a position that does not cross the water stop line. The sealing member has a through hole for passing a fastening member for fastening the vertical frame and the horizontal frame,
The sash frame according to claim 1 , wherein at least a portion of the first material portion is provided on a peripheral portion of the through hole. A sash frame comprising a vertical frame, a horizontal frame connected to the vertical frame, and a flat sealer member located between the vertical frame and the horizontal frame,
The sealer member is sandwiched between a water stop line forming portion provided on one end surface of the vertical frame or the horizontal frame and the other side surface, and compressed to form a water stop line,
A compression suppression member is disposed between the vertical frame and the horizontal frame,
The compression suppression member has a higher compression stiffness than the sealing member,
A sash frame, characterized in that the compression suppression member is provided at a position that does not cross the water stop line. The sash frame according to claim 3 , wherein the compression suppression member is a plate-shaped member that surrounds a periphery of a fastening member that fastens the vertical frame and the horizontal frame. An opening structure for a building, comprising the sash frame according to any one of claims 1 to 4 . A building having the opening structure according to claim 5 .

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