Inner window frame unit

Abstract

To provide an inner window frame unit that solves at least one of the problems of the prior art. [Solution] An interior window frame unit that can be fitted into the window frame of an existing window in a house, and comprises a first wall surface located on the room side, a second wall surface located on the window side, and a frame member that connects the first wall surface and the second wall surface along the depth direction of the window frame, and the first wall surface and the second wall surface each have openings that are formed corresponding to each other and pass through, and the size of the openings is formed smaller than the opening of the window.

Description

[Technical Field]

[0001] The present disclosure relates to an interior window frame unit. [Background technology]

[0002] As a means of improving the thermal insulation performance of houses, renovation work has traditionally been carried out to install an inner window on the interior side of an existing window to create a double-glazed window. By creating a double-glazed window, an air layer is formed between the exterior window (existing window) and the interior window, which is expected to reduce heat loss and condensation and improve soundproofing. Double-glazed windows are often created by using the window frame (picture frame) of the exterior window and installing a new interior window there. If the depth of the existing window frame is insufficient, an inner window may be installed by attaching a false frame to the interior side (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-91917 Summary of the Invention [Problem to be solved by the invention]

[0004] Conventional double-glazed windows generally have an inner window that is roughly the same size as the existing window. This leaves the window opening area large, resulting in a problem of insufficient thermal insulation performance. Furthermore, when using a frame, the frame and the newly installed inner window protrude into the room, disrupting the sense of unity with the interior and resulting in undesirable design. The present disclosure can solve at least one of the problems inherent in the prior art. [Means for solving the problem]

[0005] The first interior window frame unit of the present disclosure is an interior window frame unit that can be fitted into the window frame of an existing window in a house, and comprises a first wall surface located on the room side, a second wall surface located on the window side, and a frame member that connects the first wall surface and the second wall surface along the depth direction of the window frame, and the first wall surface and the second wall surface each have openings that are formed to correspond to each other and pass through, and the size of the openings is formed to be smaller than the opening of the window. [Effects of the Invention]

[0006] According to the present disclosure, at least one of the problems of the conventional technology can be solved. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a perspective view of one embodiment of an inner window frame unit. [Figure 2] This is an exploded view of the inner window frame unit, including the inner window sash to which the inner window frame unit is attached. [Figure 3] This is an explanatory diagram of the installation form of an inner window frame unit with an inner window to an existing window (exterior window). [Figure 4] Figure 4(A) is a diagram showing the relative positions of the outer window and the inner window sash as seen from the room side, and Figure 4(B) is a diagram showing the position of the opening of the inner window frame unit used in this case. [Figure 5] Figure 5(A) is a diagram showing the relative positions of the outer window and the inner window sash as seen from the room side, and Figure 5(B) is a diagram showing the position of the opening of the inner window frame unit used in this case. DETAILED DESCRIPTION OF THE INVENTION

[0008] The first interior window frame unit of the present disclosure is an interior window frame unit that can be fitted into the window frame of an existing window in a house, and comprises a first wall surface located on the room side, a second wall surface located on the window side, and a frame member that connects the first wall surface and the second wall surface along the depth direction of the window frame, and the first wall surface and the second wall surface each have openings that are formed to correspond to each other and pass through, and the size of the openings is formed to be smaller than the opening of the window.

[0009] The first inner window frame unit has an opening smaller than the outer window, and by fitting it into an existing window frame, the window area can be intentionally reduced. If an inner window is further installed in this opening, it is possible to improve the insulation effect that could not be achieved with conventional "inner windows that are roughly the same size as the outer window," contributing to reduced heat loss, prevention of condensation, and improved comfort in the living space. In addition, since the inner window frame unit itself can be fitted and fixed into the existing window frame (frame), it is easy to install.

[0010] A second inner window frame unit of the present disclosure is an inner window frame unit in which the area of ​​the opening in the first inner window frame unit is 80% or less of the opening area of ​​the window.

[0011] By making the opening area 80% or less of the opening area of ​​the exterior window, the window reduction effect is greater, the insulation performance is further improved, and it is particularly effective in improving the thermal environment in bathrooms and living rooms.

[0012] The third inner window frame unit of the present disclosure is an inner window frame unit in which the center position of the opening in the second inner window frame unit is offset a predetermined amount in a direction along the surface of the window relative to the center position of the window.

[0013] By offsetting the center of the opening from the outer window, it is possible to prevent the crescents and interlocking frames of the inner and outer windows from interfering with each other at the same position. This makes it easier to lock and unlock the outer window, improving the operability of the entire double-glazed window.

[0014] The fourth inner window frame unit of the present disclosure is an inner window frame unit in which the center position of the opening in the second inner window frame unit is offset toward the outer screen side of the window, which is a sliding window.

[0015] By offsetting the opening toward the outer shoji screen of the outer window, the outer window crescent is less likely to interfere with the inner window. This minimizes the clearance between the inner and outer windows, and even if the depth of the existing window frame is small, it is possible to install double-glazed windows without adding a frame.

[0016] A fifth inner window frame unit of the present disclosure is an inner window frame unit configured so that an inner window can be attached to the second wall surface side so as to close the opening in the first to fourth inner window frame units.

[0017] By configuring the unit to be able to attach an inner window sash, it is possible to further improve heat insulation and sound insulation. Since the inner window sash can be selectively installed, it is possible to flexibly respond to the usage environment and cost.

[0018] The sixth inner window frame unit of the present disclosure is an inner window frame unit in which the position of the opening is offset in advance so that when the inner window, which is a sliding window, is installed, the joining position of the inner window does not overlap with the joining position of the window, which is a sliding window.

[0019] By offsetting the opening so that the joint positions of the inner and outer windows do not overlap, there is no need for special positioning adjustments during on-site construction, and it is easy to prevent the outer window crescent from interfering with the inner window sash. This improves workability, shortens construction time, and prevents construction errors. In addition, the clearance between the inner and outer windows can be made smaller, so even if the depth of the existing window frame (picture frame) is small, double-glazed windows can be installed without adding a frame.

[0020] The seventh inner window frame unit of the present disclosure is an inner window frame unit configured in such a way that, when the inner window, which is a sliding window, is attached to the sixth inner window frame unit, the position of the opening is adjusted so that the joining position of the inner window is offset toward the outer screen side of the window relative to the joining position of the window, and when the inner screen of the inner window is opened, the crescent of the window is fully exposed toward the room side.

[0021] The operability of the outer window crescent is significantly improved by offsetting the joining position of the inner window laterally to the inner shoji side of the outer window and configuring the crescent of the outer window to be completely exposed when the outer shoji of the inner window is opened.

[0022] An eighth inner window frame unit of the present disclosure is the seventh inner window frame unit in which the space between the first wall surface and the second wall surface is filled with a heat insulating material.

[0023] By filling the space between the first and second walls with insulation, the insulation performance of the area around the window can be further improved. Depending on the insulation material selected, soundproofing and fireproofing properties can also be added, creating a double-glazed window structure with diverse performance capabilities.

[0024] The ninth inner window frame unit of the present disclosure is an inner window frame unit in which the depth length of the frame member is adjusted so that the first wall surface is flush with the existing inner wall surface in the eighth inner window frame unit.

[0025] By finishing the first wall flush with the existing interior wall, it is possible to ensure a design that looks natural when viewed from inside the room. Compared to the conventional structure using a raised frame, it has a cleaner appearance and does not impair the design of the house even after renovation.

[0026] Hereinafter, an embodiment of the interior window frame unit of the present disclosure will be described with reference to the accompanying drawings. In the following description, up, down, left, right, front, and back shown in the drawings refer to the direction when looking at the window from inside the room, unless otherwise specified.

[0027] Fig. 1 is a perspective view of one embodiment of an inner window frame unit. Fig. 2 is an exploded view of the inner window frame unit, including the inner window sash to which the window frame unit is attached. Fig. 3 is an explanatory diagram of the attachment form of an inner window frame unit with an inner window to an existing window (exterior window). Based on these, the basic configuration of the inner window frame unit will be explained.

[0028] The inner window frame unit 100 has a frame structure that is fitted into the window frame (frame) 32 of an existing window 30. The inner window frame unit 100 has a first wall 10 located on the room side and a second wall 16 located on the exterior window side, which are arranged parallel to and facing each other. The first wall 10 and the second wall 16 are both formed from rectangular plate-like members and include plate-like main bodies 10A and 16A and openings 10B and 16B formed therein. The first wall 10 and the second wall 16 are identical in shape, and the openings 10B and 16B in the inner window frame unit 100 penetrate in the Y-axis direction. In other words, the entire inner window frame unit 100 forms a hollow panel structure with openings 10B and 16B that penetrate the window frame 32 of the existing window 30 in the depth direction. The openings 10B and 16B are used to install an inner window.

[0029] An outer frame 12 is provided on the outer periphery of the first wall surface 10 and the second wall surface 16, and an inner frame 14 is provided on the inner periphery, and these frame members connect the first wall surface 10 and the second wall surface 16. As a result, the inner window frame unit 100 has an internal gap. The inner frame 14 is a frame member comprising a frame-shaped main body 14A and an opening 14B, and an inner window sash 18 is attached to this portion. The second wall surface 16 is the side that is fitted into the window frame 32 of the existing window 30 (exterior window), thereby securely fixing the inner window frame unit 100 to the window frame 32 of the existing window. There are no particular limitations on the fixing method, and it can be selected appropriately depending on the purpose and the shape of the existing window, such as by screwing and / or adhesive.

[0030] The material of the inner window frame unit 100 is not particularly limited, but wood, plywood, resin, metal, etc. can be used as appropriate, and it is preferable to make it the same thickness as the wall panel. The internal void can also be filled with insulating material, and in this case, partitions can be installed inside as needed to divide the space into sections of a specified size and fill them with insulating material. This improves the retention of the insulating material, improving workability and performance stability.

[0031] The inner window frame unit 100 is a box-shaped panel that fits snugly into the window frame 32 of an existing exterior window, and if it is fitted flush with the existing inner wall surface 40, it will be integrated with the existing inner wall surface 40 and the first wall surface 10, making the boundary between the two appear as if a small window had been installed from the beginning. In this case, the width in the depth direction of the frame members (outer frame 12, inner frame 14) can be adjusted taking into account the mounting margin for the inner window sash 18 and the distance to the inner wall surface 40.

[0032] The interior window sash 18 has a sliding window structure comprising a sash frame 18A and an outer shoji screen 18B and an inner shoji screen 18C fitted thereto. The outer shoji screen 18B and the inner shoji screen 18C are each configured to be able to open and close by sliding left and right along a rail portion 18G. A locking frame 18D is formed in the center of both shoji screens. A crescent 18F for locking and unlocking is attached to the locking frame 18D. In this specification, the position of the locking frame 18D when the window is closed is referred to as the locking position.

[0033] This inner window sash 18 is attached by being fitted into the opening 16B of the second wall surface 16. Specifically, by fixing the sash frame 18A along the inner frame 14 that surrounds the opening 16B, the inner window sash 18 can be detachably incorporated into the inner window frame unit 100. This makes it possible to install the inner window sash 18 later, if necessary, after the inner window frame unit 100 has been installed alone.

[0034] The inner window sash 18 is merely one example of the type of inner window that can be attached to the inner window frame unit 100, and the structure and type of sash to be attached can be selected arbitrarily. In addition to sliding windows, casement windows, sliding windows, and other appropriately selected sashes can be incorporated. The inner window frame unit 100 is fitted snugly into the window frame 32 of an existing window 30, and by accommodating the inner window sash 18 inside, a new window smaller than the window 30 can be formed.

[0035] The inner window frame unit 100 is placed so that it fits directly into the window frame 32 of the existing window 30 from the room side. Then, with the outer frame 12 abutting along the inner periphery of the window frame 32, it is fixed with screws. This ensures that the entire inner window frame unit 100 is securely held in the window frame 32, preventing any rattling after installation.

[0036] The size of the opening 10B formed in the interior window frame unit 100 corresponds to the size of the new interior window and is intentionally reduced compared to the opening of the existing window 30. Specifically, the area of ​​the opening 10B that accommodates the interior window sash 18 is preferably 90% or less of the opening area of ​​the window 30 (exterior window), more preferably 80% or less, and preferably 20% to 90% (20 to 90%), more preferably 40 to 80%. By setting the area within this range, insulation performance is improved by reducing the window size, unlike conventional examples in which the interior window becomes slightly smaller due to simple construction errors or frame installation issues. Furthermore, as described below, reducing the size of the interior window also increases the room for adjusting the crescent position, making it easier to avoid interference with the exterior window.

[0037] In conventional double-pane window configurations, the new inner window and the existing outer window are generally positioned at approximately the same size. As a result, the crescent 30F attached to the window 30's frame 30D and the crescent 18F attached to the inner window sash 18's frame 18D often overlapped in the same position. This resulted in the following problems. First, even if an attempt was made to move the window 30's crescent 30F, the inner window sash 18 interfered, making operation difficult or impossible. Therefore, a large clearance was required between the window 30 and the inner window sash 18, making double-pane construction impossible if the window frame 32 was too narrow. In this case, a "flush frame" had to be added, which was undesirable in terms of appearance and ease of installation.

[0038] To solve these problems, the position of the opening 10B in the inner window frame unit 100 can be offset vertically and / or horizontally relative to the window 30. This automatically shifts the crescent positions of the window 30 and the inner window sash 18, avoiding interference.

[0039] Figure 4(A) shows the relative positioning of the window 30 and the interior window sash 18 as viewed from the room side, and Figure 4(B) shows the opening position of the interior window frame unit 100 used in this case. In this configuration, the opening 10B of the interior window frame unit 100 is shifted upward relative to the window 30. The central axes C2 of the window 30 and the opening 10B are aligned, but by shifting the opening 16B upward, the crescent 18F of the interior window sash 18 and the crescent 30F of the window 30 are spaced apart in the vertical direction.

[0040] This allows the crescent 30F of the window 30 to be operated without interference, ensuring convenience for both the exterior and interior windows. The position of the opening 10B is determined in advance taking into account its relationship with the window 30, so the installer does not need to fine-tune the sash position or crescent position on-site; the appropriate positional relationship between the two is achieved simply by screwing the interior window frame unit 100 to the window frame 32. In this example, the opening 10B is shifted upward, but this is not limiting and it may also be shifted downward.

[0041] Figure 5 shows the relative positioning of the window 30 and the inner window sash 18 from inside the room, and in this embodiment, the central axis C3 of the opening 10B of the inner window frame unit 100 is further offset in the X-axis direction (horizontal direction) from the central axis C2 of the window 30.

[0042] In this embodiment, the opening 10B is designed so that the sash frame 18D of the inner window sash 18 moves toward the outer screen 30B of the window 30. When the outer screen 30B of the window 30 is closed, it protrudes further outward in the thickness direction. Therefore, by placing the sash frame 18D of the inner window on that side, the positional relationship with the crescent 30F of the outer window is organized as follows: First, the inner screen 18C of the inner window is located in front of the crescent 30F of the outer window. Second, when the inner screen 18C of the inner window is open, the crescent 30F of the outer window is exposed to the room and can be operated without interference.

[0043] In this way, by offsetting the inner window's interlocking frame 18D toward the outer shoji 30B, it is possible to minimize the clearance between the outer window's crescent 30F and the inner window sash 18. As a result, double-glazed windows can be installed even in window frames 32 with small depths that previously required the use of a "flush frame."

[0044] A more desirable configuration is to set the offset amount so that the entire outer window crescent 30F is exposed to the room when the inner shoji screen 18C of the inner window is opened. This allows the outer window crescent 30F to be locked and unlocked smoothly at all times, achieving both convenience and insulation.

[0045] From the perspective of operability of the exterior window crescent 30F, it is also preferable to slide the inner window's sash position laterally toward the inner shoji screen of the exterior window relative to the outer window's sash position. This configuration makes it easier to fully expose the outer window's crescent to the interior of the room when the outer shoji screen of the inner window is opened. This significantly improves the operability of the interior and exterior windows. The sliding direction of the sash position can be appropriately selected depending on the depth of the existing exterior window's window frame and the desired location of the interior window. It is preferable to set the sash position so that the interior and exterior do not overlap (i.e., do not overlap when viewed directly from the interior window), and then offset the sash position to an extent that the outer window's crescent is fully exposed to the interior of the room when either the outer shoji screen or the inner shoji screen of the interior window is opened.

[0046] The present disclosure is not limited to the above-described embodiments and includes various modifications. For example, the size of the opening 10B provided in the inner window frame unit 100 can be 90% or less of the opening area of ​​the existing window 30 (exterior window), and is preferably set in the range of 60 to 80%. In this case, the size may be reduced while maintaining the aspect ratio of the exterior window, or the aspect ratio may be changed to make it vertically or horizontally long.

[0047] The offset amount of the opening 10B is preferably set appropriately within a range in which the crescent 30F of the outer window is sufficiently exposed at least toward the room side when the inner shoji screen of the inner window is opened.

[0048] Furthermore, the interior space of the inner window frame unit 100 can be filled with insulating material, but in this case it can be divided into multiple compartments by providing partitions, or the insulating material can be placed in one piece without providing partitions. It is also possible to use the interior space as an air layer without filling it with insulating material.

[0049] The first wall surface 10 and the second wall surface 16 can be made of wood, plywood, resin, metal, or a composite of these materials. The surface finish can be enhanced by using the same wallpaper or paint as the existing interior wall surface 40, or conversely, a different finish can be used to emphasize the contrast.

[0050] Furthermore, the first wall surface 10 on the room side is not limited to being completely flush with the existing interior wall surface 40, and a frame-like border can be left to create an accent. Furthermore, the interior window frame unit 100 does not necessarily need to be accompanied by an interior window sash 18, and the interior window frame unit 100 alone can function as an insulating panel. Of course, when installing an interior window sash, various sash shapes can be selected, such as a double sliding window, a casement window, a sliding window, or a pivot window.

[0051] Regarding the installation method, the unit is basically fixed to the window frame 32 with screws, but adhesives or brackets can be used as an auxiliary means if necessary. Also, the inner window frame unit 100 is not limited to being manufactured as a finished product in advance at a factory and then fitted together on site, but a method of assembling the components on site may also be adopted. [Explanation of symbols]

[0052] 10 First Wall 10A main unit 10B opening 12 Outer Frame 14 Inner Frame 14A main body 14B opening 16 Second wall 16A main unit 16B opening 18 Inner window sash 18A sash frame 18B Outer Shoji Screen 18th century inner shoji screen 18D stile 18F Crescent 18G rail part 30 Windows 30B Outer Shoji Screen 30D stile 30F Crescent 32 Window Frame (Frame) 40 Inner wall surface 100 Inner window frame unit

Claims

1. An inner window frame unit that can be fitted into the window frame of an existing window in a house, a first wall surface located on the room side, a second wall surface located on the window side, and a frame member connecting the first wall surface and the second wall surface along the depth direction of the window frame, The first wall surface and the second wall surface are provided with openings formed corresponding to each other and penetrating therethrough, The size of the opening is smaller than the size of the window opening, The area of ​​the opening is 80% or less of the opening area of ​​the window, An inner window frame unit in which the center position of the opening is offset by a predetermined amount in a direction along the surface of the window relative to the center position of the window.

2. An inner window frame unit that can be fitted into the window frame of an existing window in a house, a first wall surface located on the room side, a second wall surface located on the window side, and a frame member connecting the first wall surface and the second wall surface along the depth direction of the window frame, The first wall surface and the second wall surface are provided with openings formed corresponding to each other and penetrating therethrough, The size of the opening is smaller than the size of the window opening, The area of ​​the opening is 80% or less of the opening area of ​​the window, An inner window frame unit in which the center position of the opening is offset toward the outer shoji side of the window, which is a sliding window.

3. An inner window frame unit that can be fitted into the window frame of an existing window in a house, a first wall surface located on the room side, a second wall surface located on the window side, and a frame member connecting the first wall surface and the second wall surface along the depth direction of the window frame, The first wall surface and the second wall surface are provided with openings formed corresponding to each other and penetrating therethrough, The size of the opening is smaller than the size of the window opening, An inner window frame unit configured so that an inner window can be attached to the second wall surface side so as to close the opening.

4. The inner window frame unit according to claim 3, wherein the position of the opening is offset in advance so that when the inner window, which is a sliding window, is installed, the joining position of the inner window does not overlap with the joining position of the window, which is a sliding window.

5. When the inner window, which is a sliding window, is installed, the position of the opening is adjusted so that the joining position of the inner window is offset toward the inner shoji side of the window with respect to the joining position of the window, The inner window frame unit according to claim 4, wherein the crescent of the window is configured to be completely exposed to the room side when the outer screen of the inner window is opened.

6. The inner window frame unit according to claim 5 , wherein a space between the first wall surface and the second wall surface is filled with a heat insulating material.

7. 7. The interior window frame unit according to claim 6, wherein the depth of the frame member is adjusted so that the first wall surface is flush with an existing interior wall surface.

8. An inner window frame unit that can be fitted into the window frame of an existing window in a house, a first wall surface located on the room side, a second wall surface located on the window side, and a frame member connecting the first wall surface and the second wall surface along the depth direction of the window frame, The first wall surface and the second wall surface are provided with openings formed corresponding to each other and penetrating therethrough, The size of the opening is smaller than the size of the window opening, The area of ​​the opening is 80% or less of the opening area of ​​the window, An inner window frame unit configured so that an inner window can be attached to the second wall surface side so as to close the opening.

9. An inner window frame unit as described in claim 1 or 2, configured so that an inner window can be attached to the second wall side so as to block the opening.

Images