JP7561577B2 - Inner window - Google Patents

Description

This disclosure relates to an inner window. More specifically, it relates to an inner window that is placed on the indoor side of an outer window in a double-glazed window.

Double-glazed windows, which are constructed by installing an inner window and an outer window in an opening of a building, have been known in the past (see, for example, Patent Document 1). By doubling the window, double-glazed windows can improve heat insulation performance and soundproofing. Double-glazed windows can be installed by simultaneously installing an outer window and an inner window when building a new house, or by adding an inner window to the interior side of an existing window during renovation.

The inner window, which is placed on the indoor side, has a frame body with an upper frame, and a shoji screen placed within the frame body. A downward-protruding rail that protrudes downward is formed on the upper frame. A rail accommodation guide that accommodates the downward-protruding rail of the upper frame is formed on the upper end of the shoji screen. The downward-protruding rail of the upper frame is accommodated and guided in the rail accommodation guide of the shoji screen, allowing the shoji screen to slide left and right within the frame body in the front direction.

JP 2019-152002 A

Inner windows are sometimes installed on the inside of existing windows during renovations. In such cases, insufficient adjustment during construction or deformation of the mounting surface due to deterioration over time can cause the downward-protruding rail on the upper frame to become less engaged with the rail-receiving guide of the shoji screen, which can cause the shoji screen to fall off and the inner window screen to collapse. For this reason, measures to prevent inner window screen screens from falling off are desired.

The purpose of this disclosure is to provide an inner window that can prevent the shoji screen from falling off.

The present disclosure relates to an inner window that is placed on the indoor side of an outer window, comprising a frame body having an upper frame, and a shoji screen that is placed within the frame body and can slide laterally, the upper frame having a downwardly protruding rail that protrudes downward, the shoji screen having a rail housing guide portion that opens upward and houses at least a portion of the downwardly protruding rail to guide the lateral sliding movement of the shoji screen, and a connecting member that connects the downwardly protruding rail and the rail housing guide portion.

This is a front view of the inner window of the first embodiment as seen from the indoor side. 2 is a cross-sectional view taken along line AA in FIG. 1, showing a connection member according to the first embodiment; FIG. FIG. 11 is a cross-sectional view showing a connection member according to a second embodiment.

The first embodiment of the present disclosure will be described in detail below with reference to the drawings. In this specification, the term "visible direction" refers to the surface direction of the glass in the interior window 1 placed in an opening formed in the wall of a building, and the term "visible direction" refers to the thickness direction of the glass (i.e., the depth direction). In the drawings, the outdoor side is referred to as "OUTSIDE" and the indoor side is referred to as "INSIDE".

The inner window 1 of this embodiment constitutes the indoor window of a double-glazed window. The double-glazed window is placed in an opening formed in the wall of a building. A double-glazed window is formed by installing an outer window (not shown) in a frame provided in the opening of the building, and installing the inner window 1 on the indoor side of the outer window.

The outer window (not shown) constitutes the outdoor window of the double-glazed window. The outer window is located closer to the outdoors than the inner window 1. The outer window is a so-called sliding window, and although not shown in the figures, it is constructed by fitting an inner and outer screen into a rectangular window frame so that they can be opened and closed.

The inner window 1 is placed on the indoor side of the outer window. In this embodiment, for example, the inner window 1 is installed on the indoor side of the outer window through renovation after the outer window has been installed. Note that double-glazed windows are not limited to those in which an inner window is added to the indoor side of an outer window through renovation, but the outer window and inner window may be installed simultaneously during new construction.

The inner window 1 is a so-called sliding window, and as shown in Figures 1 and 2, it comprises a window frame 2 (frame body), an inner shoji screen 3 (shutter screen) and an outer shoji screen 4 (shutter screen) that are arranged within the window frame 2 so that they can be opened and closed.

An inner screen 3 and an outer screen 4 are attached to the inside of the window frame 2. The window frame 2 is framed in a rectangular shape by an elongated upper frame 21, a lower frame 22, and left and right vertical frames 23, 24. The window frame 2 is composed of a resin frame made of, for example, a synthetic resin such as polyvinyl chloride resin, which is extruded into a molded product. The upper frame 21, the lower frame 22, and the left and right vertical frames 23, 24 are each fixed to the inner peripheral surface of, for example, a frame member (not shown).

As shown in Figure 1, the upper frame 21 extends in the left-right direction (horizontal direction) in the viewing direction at the top of the window frame 2. As shown in Figure 2, the upper frame 21 has an upper frame upper panel portion 211, an upper frame downward protruding rail 212 (downward protruding rail) for the inner shoji screen, an upper frame downward protruding rail 213 (downward protruding rail) for the outer shoji screen, and an upper frame interior downward extending wall portion 214.

The upper frame upper panel portion 211 is positioned at the top of the upper frame 21 and is formed in the shape of a plate extending in the projection direction.

The upper frame downward protruding rail 212 for the inner shoji protrudes downward from the underside of the indoor side of the upper frame upper panel portion 211. The upper frame downward protruding rail 213 for the outer shoji protrudes downward from the underside of the outer window side (outdoor side) of the upper frame upper panel portion 211. The upper frame downward protruding rail 212 for the inner shoji and the upper frame downward protruding rail 213 for the outer shoji are formed to extend in the left-right direction (horizontal direction) in the viewing direction, and are formed over the entire longitudinal area of the upper frame 21.

The inner screen 3 can slide left and right in the front view within the window frame 2 by the inner screen upper frame downward protruding rail 212 being guided by the upper rail guide 312 (rail accommodating guide portion) (described later) formed at the upper end of the inner screen 3. The outer screen 4 can slide left and right in the front view within the window frame 2 by the outer screen upper frame downward protruding rail 213 being guided by the upper rail guide 412 (rail accommodating guide portion) (described later) formed at the upper end of the outer screen 4.

The upper frame downward-protruding rail 212 for the inner sash and the upper frame downward-protruding rail 213 for the outer sash each have a rail body 215 that protrudes downward from the underside of the upper frame upper panel portion 211, and an open locking portion 216 that is C-shaped in cross section and opens downward, formed at the lower end of the rail body 215.

The rail body 215 is formed with a vertically long rectangular cross section. The rail body 215 is formed over the entire longitudinal area of the upper frame 21. The release locking portion 216 is formed at the lower end of the rail body 215 with a C-shaped cross section when cut along the projection direction. The release locking portion 216 is formed at the lower end of the rail body 215 over the entire longitudinal area of the upper frame 21.

The open locking portion 216 has a lower opening 216a formed at the bottom. The lower opening 216a is formed by an opening that extends in a slit shape over the entire longitudinal area of the upper frame 21. A spherical portion 71 provided at one end of a chain-shaped connecting member 7 (described later) is engaged with the open locking portion 216 so as to be movable in the direction of movement of the inner screen 3 and the outer screen 4. The chain portion of the chain-shaped connecting member 7 (described later) is disposed in the lower opening 216a and is movable along the lower opening 216a.

The upper frame interior downward extending wall portion 214 is positioned on the interior side of the inner shoji screen 3 and extends downward a predetermined length from the end of the upper frame upper panel portion 211 facing the interior side in the forward direction. In this embodiment, the lower end portion 214a of the upper frame interior downward extending wall portion 214 is located above the lower end portion 212a of the upper frame downward protruding rail 212 for the inner shoji screen and the lower end portion 213a of the upper frame downward protruding rail 213 for the outer shoji screen.

As shown in FIG. 1, the bottom frame 22 extends in the left-right direction (horizontal direction) at the bottom of the window frame 2. As shown in FIG. 2, the bottom frame 22 has a lower rail 221 for the inner shoji screen and a lower rail 222 for the outer shoji screen.

The lower rail 221 for the inner screen is erected upward on the upper surface of the indoor side of the lower frame 22. A wheel 321 arranged at the lower end of the lower frame 32 of the inner screen 3 engages with the lower rail 221 for the inner screen. This allows the inner screen 3 to slide left and right in the front direction within the window frame 2.

The lower rail 222 for the outer screen is erected upward on the upper surface of the outer window side (outdoor side) of the lower frame 22. A wheel 421 arranged at the lower end of the lower frame 42 of the outer screen 4 engages with the lower rail 222 for the outer screen. This allows the outer screen 4 to slide left and right in the front direction within the window frame 2.

As shown in FIG. 1, the left and right vertical frames 23, 24 extend vertically at both ends of the upper frame 21 and the lower frame 22 in the left-right direction of the front view. The left and right vertical frames 23, 24 form the sides of the window frame 2.

The inner screen 3 and the outer screen 4 are both sliding doors that can be slid left and right (horizontally) in the viewing direction, forming a so-called sliding window in which the opening of the window frame 2 can be closed or opened.

As shown in Fig. 1, the inner shoji screen 3 is composed of a rectangular frame body 35 formed by a long upper frame 31, a long lower frame 32, a left and right vertical frame, a front frame 34, and glass 36 fitted and fixed in the frame body 35. The outer shoji screen 4 is composed of a rectangular frame body 45 formed by a long upper frame 41, a long lower frame 42, a left and right vertical frame, a front frame 43, and glass 46 fitted and fixed in the frame body 45.

The frame 35, 45 is made of resin, for example, formed by extrusion molding of synthetic resin such as polyvinyl chloride resin. In this embodiment, the glass 36, 46 is made of, for example, two-layer glass. A crescent lock 331 for locking the door is provided on the visible surface of the inner frame 33 of the inner screen 3.

As shown in FIG. 2, rollers 321, 421 are provided at the bottom inside the lower frames 32, 42. The movement of the rollers 321, 421 in the left-right direction in the visible direction is guided by the lower rail 221 for the inner screen and the lower rail 222 for the outer screen.

As shown in FIG. 2, the upper frame 31, 41 has a lower glass groove 311, 411 formed at the bottom and an upper rail guide 312, 412 (rail receiving guide portion) formed at the top. The lower glass groove 311, 411 is formed in a groove shape that opens downward. The upper end of the glass 36, 46 is placed in the lower glass groove 311, 411.

The upper rail guides 312, 412 open upward. The upper rail guides 312, 412 accommodate (place) the lower side of the inner frame downward protruding rail 212 and the lower side of the outer frame downward protruding rail 213. The upper rail guides 312, 412 accommodate at least a portion of the inner frame downward protruding rail 212 and the outer frame downward protruding rail 213, and guide the sliding movement of the inner frame 3 and the outer frame 4 in the left-right direction (horizontal direction).

A pair of airtight materials 51 are provided at the opening edge at the upper end of the upper rail guides 312, 412, spaced apart in the projection direction. The airtight materials 51 abut against the side of the upper frame 21's inner shoji upper frame downward protruding rail 212 or the upper frame 213's outer shoji upper frame downward protruding rail 213.

The other end 72 of the chain-shaped connecting member 7 is fixed to the upper surface of the center of the movement direction of the inner and outer screens 3 and 4 of the bottom surface portion 314, 414 on the lower side of the upper rail guide 312, 412. As described above, the spherical portion 71 provided at one end of the chain-shaped connecting member 7 is engaged with the open locking portion 216 in a state in which it can move in the movement direction of the inner and outer screens 3 and 4. The connecting member 7 connects the downward protruding rails (upper frame downward protruding rail 212 for the inner screen, upper frame downward protruding rail 213 for the outer screen) to the upper rail guide 312, 412.

The connecting member 7 is formed in a chain shape. The spherical portion 71 at one end of the connecting member 7 is engaged with the open engaging portion 216 in a state in which it can move in the direction of movement of the inner screen 3 and the outer screen 4, and the other end 72 is fixed to the bottom surface portion 314, 414 on the lower side of the upper rail guide 312, 412.

In this embodiment, as shown in FIG. 1, the other end 72 of the connecting member 7 is fixed to the bottom surface portion 314, 414 on the lower side of the upper rail guide 312, 412 at the center in the left-right direction of the inner screen 3 and the outer screen 4, respectively. Note that the position where the other end 72 of the connecting member 7 is connected is not limited to this. For example, it may be the end side in the left-right direction of the inner screen 3 and the outer screen 4, respectively.

As shown in FIG. 2, the spherical portion 71 is engaged with the release locking portion 216. With the spherical portion 71 engaged with the release locking portion 216, the chain portion of the connecting member 7 is disposed in the lower opening 216a, and can move along the lower opening 216a as the inner screen 3 and the outer screen 4 slide.

The connecting member 7 is configured with a length that allows the slack length of the chain-like portion to be changed depending on the distance between the downward protruding rails (inner shoji upper frame downward protruding rail 212, outer shoji upper frame downward protruding rail 213) and the upper rail guides 312, 412.

As described above, by connecting the downward protruding rails (inner screen upper frame downward protruding rail 212, outer screen upper frame downward protruding rail 213) to the upper rail guides 312, 412 with the connecting member 7, the inner screen 3 and outer screen 4 can be slid while the spherical portion 71 is engaged with the open engagement portion 216, while preventing the inner screen 3 and outer screen 4 from coming off the window frame 2.

The first embodiment provides the following effects. The inner window 1 of this embodiment includes a shoji (inner shoji 3, outer shoji 4) that is arranged in the window frame 2 and can slide laterally. The upper frame 21 has downward protruding rails (inner shoji upper frame downward protruding rail 212, outer shoji upper frame downward protruding rail 213) that protrude downward. The shoji (inner shoji 3, outer shoji 4) have upper rail guides 312, 412 that open upward and accommodate at least a part of the downward protruding rails (inner shoji upper frame downward protruding rail 212, outer shoji upper frame downward protruding rail 213) to guide the shoji (inner shoji 3, outer shoji 4) in the lateral sliding movement. A connecting member 7 is provided to connect the downward protruding rails (inner shoji upper frame downward protruding rail 212, outer shoji upper frame downward protruding rail 213) to the upper rail guides 312, 412.

As a result, even if the positional relationship of the screens (inner screen 3, outer screen 4) to the upper frame 21 changes due to deterioration over time, etc., and the screens (inner screen 3, outer screen 4) may become less secure, the screens (inner screen 3, outer screen 4) are connected to the downward protruding rails of the upper frame 21 (upper frame downward protruding rail 212 for inner screen, upper frame downward protruding rail 213 for outer screen) by the connecting members 7, so the screens (inner screen 3, outer screen 4) can be prevented from coming off the window frame 2.

In this embodiment, an open locking portion 216 that opens downward is formed on the lower end side of the downward protruding rail (upper frame downward protruding rail 212 for inner screen, upper frame downward protruding rail 213 for outer screen), and the connecting member 7 is engaged with the open locking portion 216 in a state in which the spherical portion 71 on one end side is movable in the movement direction of the screen (inner screen 3, outer screen 4), and the other end 72 side is fixed to the lower side of the upper rail guide 312, 412. As a result, the connecting member 7 can be moved along the open locking portion 216, so even if the downward protruding rail (upper frame downward protruding rail 212 for inner screen, upper frame downward protruding rail 213 for outer screen) and the upper rail guide 312, 412 are connected by the connecting member 7, the screen (inner screen 3, outer screen 4) can be slid.

In this embodiment, the connecting member 7 is formed in a chain shape, has a spherical portion 71 formed on one end that is engaged with the open locking portion 216, and the other end is fixed to the lower side of the upper rail guides 312, 412. As a result, the spherical portion 71 provided on one end of the chain-shaped connecting member 7 is engaged with the open locking portion 216, allowing the shoji screens (inner shoji screen 3, outer shoji screen 4) to slide smoothly.

In this embodiment, the connection member 7 is configured with a length that allows the length of slack in the chain-like portion of the connection member 7 to be changed depending on the distance between the downward protruding rail (upper frame downward protruding rail 212 for inner screen, upper frame downward protruding rail 213 for outer screen) and the upper rail guide 312, 412. As a result, even if the positional relationship of the screen (inner screen 3, outer screen 4) to the upper frame 21 changes and the degree of engagement of the inner screen 3 or outer screen 4 to the window frame 2 changes, the chain-like connection member 7 can absorb the change in the degree of engagement of the inner screen 3 or outer screen 4 to the window frame 2 and connect the downward protruding rail (upper frame downward protruding rail 212 for inner screen, upper frame downward protruding rail 213 for outer screen) to the upper rail guide 312, 412.

Next, the second embodiment will be described. The second embodiment is a modified version of the first embodiment, and includes a connection member 8 instead of the connection member 7 of the first embodiment. The other configurations of the second embodiment are similar to those of the first embodiment. In the description of the second embodiment, the description of the same configurations as those of the first embodiment may be omitted.

The configuration related to the connecting member 8 of the second embodiment will be described. As shown in FIG. 3, the upper frame downward-protruding rail 212 for the inner sash and the upper frame downward-protruding rail 213 for the outer sash each have a rail body 215 that protrudes downward from the underside of the upper frame upper panel portion 211, and an open locking portion 215a formed at the lower end of the rail body 215 and opening downward. The open locking portion 215a is formed in the shape of an opening that extends in the shape of a slit in the longitudinal direction of the rail body 215.

The rail body 215 has a hollow portion 215b and is formed with a vertically long rectangular cross-sectional shape. The release locking portion 215a is formed in communication with the hollow portion 215b, and a movable space K is formed above the release locking portion 215a, in which the T-shaped portion 81 of the connection member 8 can move up and down.

The connecting member 8 in the second embodiment is formed in a vertically elongated shape that extends in the up-down direction. The vertically elongated connecting member 8 has a T-shaped portion 81 formed on one end, and the other end 82 is fixed to the bottom surface portion 314, 414 on the lower side of the upper rail guide 312, 412 of the inner screen 3 or the outer screen 4.

In the second embodiment, as in the first embodiment, as shown in FIG. 1, the other end 82 of the connecting member 8 is fixed to the bottom surface portion 314, 414 on the lower side of the upper rail guide 312, 412 at the center in the left-right direction of the inner screen 3 and the outer screen 4, respectively. Note that, as in the first embodiment, the position where the other end 72 of the connecting member 7 is connected is not limited to this. For example, it may be the end side in the left-right direction of the inner screen 3 and the outer screen 4, respectively.

As shown in FIG. 3, the T-shaped portion 81 is engaged with the open locking portion 215a. The vertically elongated portion of the connection member 8 is disposed in the opening of the open locking portion 215a when the T-shaped portion 81 is engaged with the open locking portion 215a, and can move along the opening of the open locking portion 215a as the inner screen 3 and the outer screen 4 are slid.

When the T-shaped portion 81 is engaged with the release locking portion 215a, a movable space K is formed above the release locking portion 215a, in which the T-shaped portion 81 can move up and down. As a result, the connecting member 8 is configured such that the vertical position of the T-shaped portion 81 engaged with the release locking portion 215a can be changed by allowing the T-shaped portion 81 to move up and down in the movable space K depending on the distance between the downward protruding rails (inner screen upper frame downward protruding rail 212, outer screen upper frame downward protruding rail 213) and the upper rail guides 312, 412.

As described above, by connecting the downward protruding rails (inner screen upper frame downward protruding rail 212, outer screen upper frame downward protruding rail 213) to the upper rail guides 312, 412 with the connecting member 8, the inner screen 3 and outer screen 4 can be slid while the T-shaped portion 81 is engaged with the open engagement portion 216, while preventing the inner screen 3 and outer screen 4 from coming off the window frame 2.

The second embodiment provides the following effects. In this embodiment, the connecting member 8 is formed in a vertically elongated shape, has a T-shaped portion 81 formed on one end that engages with the open locking portion 215a, and has the other end 82 fixed to the lower side of the upper rail guide 312, 412 of the inner screen 3 or outer screen 4.

As a result, as in the first embodiment, even if the positional relationship of the screens (inner screen 3, outer screen 4) to the upper frame 21 changes due to aging or other reasons, and the screens (inner screen 3, outer screen 4) are likely to become less engaged, the screens (inner screen 3, outer screen 4) are connected to the downward protruding rails of the upper frame 21 (inner screen upper frame downward protruding rail 212, outer screen upper frame downward protruding rail 213) by the connecting member 8, so that the screens (inner screen 3, outer screen 4) can be prevented from coming off the window frame 2. In addition, because the T-shaped portion 81 provided on one end of the vertically elongated connecting member 7 is engaged with the open engaging portion 215a, the screens (inner screen 3, outer screen 4) can be smoothly slid.

In this embodiment, the connecting member 8 is configured so that the vertical position of the T-shaped portion 81 engaged with the open locking portion 215a can be changed depending on the distance between the downward protruding rail (upper frame downward protruding rail 212 for inner screen, upper frame downward protruding rail 213 for outer screen) and the upper rail guide 312, 412. As a result, even if the positional relationship of the screen (inner screen 3, outer screen 4) to the upper frame 21 changes and the degree of engagement of the inner screen 3 or outer screen 4 to the window frame 2 changes, a movable space K in which the T-shaped portion 81 can move vertically is formed above the open locking portion 215a, so that the vertical position of the T-shaped portion 81 can be changed to absorb the change in the degree of engagement of the inner screen 3 or outer screen 4 to the window frame 2 and connect the downward protruding rail (upper frame downward protruding rail 212 for inner screen, upper frame downward protruding rail 213 for outer screen) to the upper rail guide 312, 412.

Note that this disclosure is not limited to the above-described embodiments, and any modifications, improvements, etc. that achieve the objectives of this disclosure are included in this disclosure.

For example, in the first embodiment, the connecting member is formed in a chain shape, but this is not limited thereto. For example, the connecting member may be made of a wire. Also, the chain portion of the connecting member in the first embodiment is formed in a line shape by connecting ring-shaped parts, but the chain portion of the connecting member is not limited thereto. For example, the chain portion of the connecting member may be made of a ball chain.

In the above embodiment, the window frame 2 of the inner window 1 is made of a resin frame, but this is not limited to this. The window frame of the inner window 1 may be made of a metal frame, for example.

1 Inner window, 2 Window frame (frame body), 3 Inner screen (screen), 4 Outer screen (screen), 7, 8 Connection member, 21 Upper frame, 71 Spherical locking part, 81 T-shaped locking part, 212 Inner screen upper frame downward protruding rail (downward protruding rail), 213 Outer screen upper frame downward protruding rail (downward protruding rail), 216 Open locking part, 312, 412 Upper rail guide (rail accommodation guide part)

Claims (6)

An inner window that is disposed on the indoor side of an outer window,
A frame body having an upper frame;
A shoji screen is disposed within the frame and is slidable laterally.
The upper frame has a downwardly protruding rail that is formed hollow and protrudes downward,
The shoji screen has a rail accommodation guide portion that opens upward and accommodates at least a portion of the downwardly protruding rail to guide the shoji screen's lateral sliding movement,
a connecting member that connects the downwardly protruding rail and the rail housing guide portion ;
A downwardly opening locking portion is formed on the lower end side of the downwardly protruding rail,
An inner window in which one end of the connecting member is engaged with the open engagement portion while being movable in the direction of movement of the screen, and the other end is fixed to the lower side of the rail accommodating guide portion . An inner window that is disposed on the indoor side of an outer window,
A frame body having an upper frame;
A shoji screen is disposed within the frame and is slidable laterally.
The upper frame has a downwardly protruding rail that protrudes downward,
The shoji screen has a rail accommodation guide portion that opens upward and accommodates at least a portion of the downwardly protruding rail to guide the shoji screen's lateral sliding movement,
An inner window comprising a chain-shaped connecting member that connects the downwardly protruding rail and the rail accommodating guide portion. A downwardly opening locking portion is formed on the lower end side of the downwardly protruding rail,
The connecting member has one end engaged with the open locking portion in a state in which the one end can move in the moving direction of the screen, and the other end is fixed to the lower side of the rail housing guide portion,
The inner window according to claim 2 , wherein the connecting member has a spherical portion formed on the one end side and engaged with the release engaging portion, and the other end side is fixed to a lower side of the rail accommodating guide portion. 4. The inner window according to claim 2 or 3, wherein the connecting member is configured to have a length such that the slack length of the chain-like portion can be changed depending on the distance between the downwardly protruding rail and the rail accommodating guide portion. The interior window as described in claim 1, wherein the connecting member is formed in a vertically elongated shape extending in the vertical direction, has a T-shaped portion formed on one end side that engages with the open engagement portion, and the other end side is fixed to the lower side of the rail accommodation guide portion of the shoji screen. The inner window according to claim 5, wherein the connecting member is configured so that the vertical position of the T-shaped portion that is engaged with the open engagement portion can be changed according to the distance between the downwardly protruding rail and the rail housing guide portion.

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