JP7621090B2 - 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 sliding 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 part of the downwardly protruding rail to guide the sliding movement of the shoji screen in the lateral direction, and the shoji screen having a movable protruding portion that can be moved to a protruding position that protrudes above the upper end of the shoji screen.

This is a front view of the inner window of the embodiment as seen from the indoor side. 2 is a cross-sectional view taken along line AA in FIG. 1. 2 is a cross-sectional view taken along line BB in FIG. 1. FIG. 2 is a perspective view showing a tip-over prevention mechanism according to the first embodiment. FIG. 11 is a cross-sectional view showing a tipping prevention mechanism according to a second embodiment. FIG. 11 is a perspective view showing a tip-over prevention mechanism 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 on the outdoor side of 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 with a vertically long rectangular cross-sectional shape. 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 left and right (horizontally) 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 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.

As shown in FIG. 1, a vibration prevention member 6 and a protruding movement mechanism 7 are disposed on the upper part of the inner frame 33 of the inner screen 3, the upper part of the end frame 34 of the inner screen 3, and the upper part of the outer frame 43 and end frame 44 of the outer screen 4.

In the following explanation, the details of the anti-sway member 6 and the protruding movement mechanism 7 arranged on the top of the door end frame 34 of the inner screen 3 will be explained. The configuration of the anti-sway member 6 arranged on the top of the inner frame 33 of the inner screen 3 is the same as the configuration of the anti-sway member 6 arranged on the top of the door end frame 34 of the inner screen 3 with the left and right orientation reversed, so the explanation will be omitted. The configuration of the anti-sway member 6 arranged on the top of the door end frame 44 and the top of the outer frame 43 of the outer screen 4 is the same as the configuration of the anti-sway member 6 arranged on the top of the door end frame 34 and the top of the inner frame 33 of the inner screen 3, so the explanation will be omitted. The configurations of the protruding movement mechanism 7 are all the same, so the protruding movement mechanism 7 arranged on the top of the door end frame 34 of the inner screen 3 will be explained, and the explanation of the protruding movement mechanism 7 arranged in other parts will be omitted.

As shown in FIG. 3, the anti-sway member 6, which is placed on the upper part of the door end frame 34 of the inner screen 3, is placed in an opening 37 that opens upward and is formed on the upper part of the door end frame 34 of the inner screen 3. The anti-sway member 6 is provided at the upper end of the end in the direction of the sliding movement of the inner screen 3. The anti-sway member 6 suppresses the swing of the inner screen 3. The anti-sway member 6 accommodates and guides the inner screen upper frame downward protruding rail 212 (downward protruding rail).

As shown in Figures 3 and 4, the anti-sway member 6 has a cross-sectional U-shaped anti-sway member body 61 that is open at the top, and a plate-shaped engaging packing plate 63. The anti-sway member body 61 and the engaging packing plate 63 are integrally formed. The anti-sway member body 61 has a pair of upper plates 62, 62. The pair of upper plates 62, 62 each extend outward in the projection direction from the upper end of the anti-sway member body 61.

The anti-sway member body 61 is placed in the opening 37 of the door end frame 34. When cut along the projection direction, the anti-sway member body 61 has a cross-sectional U-shape that opens upward. The anti-sway member body 61 has a bottom surface 611, a pair of vertical surface portions 612 that extend upward at the same interval in the projection direction at the lower part of the U-shape, and a pair of inclined surface portions 613 that slope upward at the upper part of the U-shape so that the interval in the projection direction narrows as it moves from the lower side to the upper side toward the center in the projection direction.

The engaging packing plate 63 is formed in a plate shape and is arranged at the outer end in the left-right direction of the inner screen 3 in the view direction. The engaging packing plate 63 is attached to the end face of the outer end in the left-right direction of the view direction of the anti-vibration member main body 61. The engaging packing plate 63 is formed, for example, from a resin material. The engaging packing plate 63 has a recess 631 formed in the upper part that is recessed downward. The lower part of the inner screen upper frame downward protruding rail 212 is arranged in the recess 631.

The engaging packing plate 63 comes into contact with the downwardly protruding rail 212 of the upper frame for the inner screen at the U-shaped edge of the recess 631. As a result, when the inner screen 3 moves left and right in the viewing direction, the downwardly protruding rail 212 of the upper frame for the inner screen moves while contacting the engaging packing plate 63, and the engaging packing plate 63 functions as an airtight member.

The anti-sway member 6 has an upper frame downward-protruding rail 212 for the inner screen arranged between a pair of vertical surfaces 612 or a pair of inclined surfaces 613 of the anti-sway member body 61. This restricts the movement of the inner screen 3 in the indoor/outdoor directions when the inner screen 3 slides in the viewing direction within the window frame 2, suppressing rattling between the inner screen 3 and the window frame 2.

As shown in Figures 3 and 4, the protruding movement mechanism 7 is configured to be movable to a protruding position that protrudes upward from the upper end of the inner screen 3. The protruding movement mechanism 7 is disposed on the indoor-side projecting surface of the upper end of the door end frame 34 of the inner screen 3 where the anti-sway member 6 is provided. The protruding movement mechanism 7 comprises a vertical movement plate 71, a pair of guide members 72, 72, and two screws 73, 73.

The vertically movable plate 71 is formed in a plate shape that extends along the indoor-facing surface of the upper end of the door frame 34 of the inner screen 3. The vertically movable plate 71 is configured to be movable between a protruding position (position indicated by a solid line in FIG. 4) above the upper end of the inner screen 3, and a retracted position (position indicated by a two-dot chain line in FIG. 4) below the protruding position, which is used when the inner screen 3 is fitted into the window frame 2. The vertically movable plate 71 is formed with a slit-shaped slit opening 711 that extends in the vertical direction.

The pair of guide parts 72, 72 guide the vertical movement of the vertical movement plate 71. The pair of guide parts 72, 72 are formed at both left and right ends of the vertical movement plate 71, protruding from the indoor projecting surface of the door end frame 34, and extend in the vertical direction. The pair of guide parts 72, 72 are formed in an L-shape in cross section, facing each other with the open side located on the inside.

Two screws 73, 73 are arranged to pass through the slit opening 711 of the vertically movable plate 71, and secure the vertically movable plate 71 to the upper end of the door frame 34 of the inner screen 3. By loosening the two screws 73, 73, the vertically movable plate 71 can be slid vertically along the slit opening 711, and the vertically movable plate 71 can be fixed in the protruding position or retracted position by tightening the two screws 73. In this way, the protruding movement mechanism 7 is provided on the inner screen 3 so that it can slide upward above the upper end of the inner screen 3.

Next, the construction procedure for the inner window 1 will be explained. The case where the inner screen 3 and the outer screen 4 are assembled into the window frame 2 during construction of the inner window 1 will be explained. The inner screen 3 and the outer screen 4 are assembled and erected into the window frame 2 in the so-called Kendon style with the vertical movement plate 71 of the protruding movement mechanism 7 positioned in the retracted position (the position indicated by the two-dot chain line in Figure 4).

When the outer screen 4 is incorporated into the window frame 2 using the Kendon method, the upper part of the outer screen 4 is tilted toward the inside of the window frame 2 of the inner window 1, and the outer screen 4 is gradually raised while being lifted upward, and the upper rail guide 412 of the outer screen 4 is inserted into the outer screen upper frame downward protruding rail 213 of the upper frame 21, and then it is lifted further upward and then lowered downward to insert the rollers 321 of the outer screen 4 into the outer screen lower rail 222 of the lower frame 22. When fitting the inner screen 3 into the window frame 2 using the Kendon method, the upper part of the inner screen 3 is tilted toward the inside of the window frame 2 of the inner window 1, and the inner screen 3 is gradually raised while being lifted upward, and the upper rail guide 312 of the inner screen 3 is inserted into the inner screen upper frame downward protruding rail 212 of the upper frame 21, and after being lifted further upward, it is lowered downward to insert the wheel 321 of the inner screen 3 into the inner screen lower rail 221 of the lower frame 22.

Then, adjust the anti-sway member 6 at the left and right ends of the upper end of the inner screen 3 so that it fits properly between the inner screen 3 and the lower protruding rail 212 of the upper frame for the inner screen of the upper frame 21. Adjust the anti-sway member 6 at the left and right ends of the upper end of the outer screen 4 so that it fits properly between the outer screen 4 and the lower protruding rail 213 of the upper frame for the outer screen of the upper frame 21.

Next, the two screws 73, 73 of the protruding movement mechanism 7 are loosened, and the vertically movable plate 71 is moved upward along the slit opening 711 and fixed in the protruding position. This allows the vertically movable plate 71 to be moved upward to a position where it hooks onto the upper frame 21's upper frame interior downward extending wall portion 214 or the upper frame downward protruding rail 212 for the inner sash, as shown in Figure 3.

The position of the upper end 712 of the vertically movable plate 71 is located a specified height above the upper end of the inner screen 3. The position of the upper end 712 of the vertically movable plate 71 is set so that even if the engagement between the upper frame downward protruding rail 212 for the inner screen of the window frame 2 and the inner screen 3 becomes weaker due to aging or the like, the upper end 712 of the vertically movable plate 71 will be caught on the lower end 212a of the upper frame downward protruding rail 212 for the inner screen of the window frame 2 or the lower end 214a of the upper frame indoor inner downward extending wall portion 214, preventing the inner screen 3 from coming off the window frame 2.

Therefore, even if the inner screen 3 becomes less attached due to deterioration over time, the vertically moving plate 71 can easily catch on the upper frame 21's inner downward extending wall portion 214 and the upper frame downward protruding rail 212 for the inner screen, preventing the inner screen 3 from falling over.

According to this embodiment, the following effects are achieved. The inner window 1 of this embodiment is equipped with 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 a downward protruding rail (inner shoji upper frame downward protruding rail 212, outer shoji upper frame downward protruding rail 213) that protrudes downward, the shoji (inner shoji 3, outer shoji 4) has a rail accommodation guide part (upper rail guide 312, 412, anti-vibration member 6) that opens upward and accommodates at least a part of the downward protruding rail (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) sliding movement in the lateral direction, and the shoji (inner shoji 3, outer shoji 4) has a protruding movement mechanism part 7 that can be moved to a protruding position that protrudes above the upper end of the shoji (inner shoji 3, outer shoji 4).

This allows the vertically movable plate 71 to be moved upward to a position where it catches on the upper frame interior downward extending wall portion 214 of the upper frame 21 and the upper frame downward protruding rail 212 for the inner shoji screen. The upper end portion 712 of the vertically movable plate 71 is located higher than the upper end of the inner shoji screen 3. Therefore, even if the engagement between the upper frame interior downward protruding rail 212 for the inner shoji screen of the window frame 2 and the inner shoji screen 3 becomes weaker due to aging or other reasons, the vertically movable plate 71 is likely to catch on the upper frame interior downward extending wall portion 214 of the upper frame 21 and the upper frame downward protruding rail 212 for the inner shoji screen, preventing the inner shoji screen 3 from falling over.

In this embodiment, the protruding movement mechanism 7 is provided on the shoji screens (inner shoji screen 3, outer shoji screen 4) so that it can slide upward above the upper end of the shoji screens (inner shoji screen 3, outer shoji screen 4). As a result, by sliding the vertical movement plate 71 of the protruding movement mechanism 7, the vertical movement plate 71 of the protruding movement mechanism 7 can be easily moved upward, making it easy to prevent the inner shoji screen 3 from falling over.

Next, the second embodiment will be described. The second embodiment is a variation of the first embodiment, and includes a protruding movement mechanism 8 instead of the protruding movement mechanism 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 protruding movement mechanism 8 of the second embodiment will now be described. As shown in Figures 5 and 6, the protruding movement mechanism 8 of the second embodiment is provided on the upper surface of the outdoor-side upper plate 62a of the pair of upper plates 62, 62 of the anti-vibration member 6 provided on the inner screen 3.

The protruding movement mechanism 8 includes a fixed plate 81, an upper moving plate 82, and a biasing portion 83. The fixed plate 81 is formed in a plate shape that is formed along the upper surface of the outdoor-side upper plate 62a of the pair of upper plates 62, 62 of the anti-sway member 6. The fixed plate 81 is fixed to the upper surface of the outdoor-side upper plate 62a of the anti-sway member 6.

The upper movable plate 82 is connected to the outer end of the fixed plate 81 in the left-right direction of the viewing direction via a biasing part 83. The upper movable plate 82 is configured to be movable between a protruding position above the upper end of the inner screen 3 (position indicated by a solid line in FIG. 6) and a retracted position below the protruding position (position indicated by a two-dot chain line in FIG. 5) where the inner screen 3 is inserted into the window frame 2.

The biasing portion 83 biases the upper moving plate 82 toward the protruding position. When fitting the inner screen 3 into the window frame 2, the upper moving plate 82 is pressed toward the fixed plate 81 by hand against the biasing force of the biasing portion 83. After fitting the inner screen 3 into the window frame 2, the upper moving plate 82 can be moved to the protruding position by the biasing force of the biasing portion 83 by releasing the hand from the upper moving plate 82. As a result, the protruding movement mechanism portion 8 is biased to rise on the side that protrudes upward from the upper end of the inner screen 3.

In the second embodiment, when the inner screen 3 and the outer screen 4 are assembled into the window frame 2, the inner screen 3 and the outer screen 4 are assembled into the window frame 2 in the so-called Kendon style, as in the first embodiment, while holding down the upper moving plate 82 of the protruding movement mechanism 8 with the hand. Then, the hand is released from the upper moving plate 82 of the protruding movement mechanism 8. This causes the upper moving plate 82 to move to a protruding position where it protrudes upward due to the biasing force.

In this way, as shown in FIG. 5, the upper moving plate 82 can be moved upward to a position where it catches on the inner screen upper frame downward protruding rail 212 of the upper frame 21. The upper end 821 of the upper moving plate 82 is located higher than the upper end of the inner screen 3. Therefore, even if the inner screen 3 becomes less hooked due to aging or other reasons, the upper moving plate 82 can easily catch on the inner screen upper frame downward protruding rail 212 of the upper frame 21, preventing the inner screen 3 from falling over.

The second embodiment can achieve the same effect as the first embodiment. Specifically, the upper moving plate 82 can be moved upward to a position where it catches on the inner screen upper frame downward protruding rail 212 of the upper frame 21. Therefore, even if the engagement between the inner screen upper frame downward protruding rail 212 of the window frame 2 and the inner screen 3 becomes weaker due to aging or the like, the upper moving plate 82 can easily catch on the inner screen upper frame downward protruding rail 212 of the upper frame 21, preventing the inner screen 3 from falling over.

In this embodiment, the protruding movement mechanism 8 is biased so that it rises on the side that protrudes upward beyond the upper end of the inner screen 3. As a result, after the inner screen 3 and the outer screen 4 are assembled into the window frame 2, simply by releasing the hand from holding down the upper moving plate 82, the upper moving plate 82 can be easily moved upward, making it easy to prevent the inner screen 3 from falling over.

In this embodiment, the protruding movement mechanism 8 is provided on the anti-sway member 6. This allows the anti-sway member 6 to suppress the vibration of the inner screen 3, while the protruding movement mechanism 8 provided on the anti-sway member 6 can prevent the inner screen 3 from falling over.

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 protruding movement mechanism 7 (moving protrusion) is provided on the inner frame 33 and the end frame 34 of the inner screen 3, and the outer frame 43 and the end frame 44 of the outer screen 4. In the second embodiment, the protruding movement mechanism 8 (moving protrusion) is provided on the anti-sway member 6. However, this is not limited to this. The protruding movement mechanism 7 (moving protrusion) of the first embodiment may be provided on the anti-sway member 6, and the protruding movement mechanism 8 (moving protrusion) of the second embodiment may be provided on the inner frame 33 and the end frame 34 of the inner screen 3, and the outer frame 43 and the end frame 44 of the outer screen 4. Also, for example, the protruding movement mechanism 7, 8 (moving protrusion) may be provided on the upper frame 31 of the inner screen 3 or the upper frame 41 of the outer screen 4.

In the first embodiment, the protruding movement mechanism 7 (moving protruding part) is provided on the indoor side of the downward protruding rail (upper frame downward protruding rail 212 for inner shoji, upper frame downward protruding rail 213 for outer shoji), and in the second embodiment, the protruding movement mechanism 8 (moving protruding part) is provided on the outdoor side of the downward protruding rail (upper frame downward protruding rail 212 for inner shoji, upper frame downward protruding rail 213 for outer shoji). However, this is not limited to this. The protruding movement mechanism 7 (moving protruding part) may be provided on the outdoor side of the downward protruding rail (upper frame downward protruding rail 212 for inner shoji, upper frame downward protruding rail 213 for outer shoji), or may be provided on both the indoor side and the outdoor side. The protruding movement mechanism 8 (moving protruding part) may be provided on the indoor side of the downward protruding rail (upper frame downward protruding rail 212 for inner shoji, upper frame downward protruding rail 213 for outer shoji), or may be provided on both the indoor side and the outdoor side.

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), 6 Vibration prevention member, 7, 8 Protruding movement mechanism part (moving protruding part), 21 Upper frame, 212 Inner screen upper frame downward protruding rail (downward protruding rail), 213 Outer screen upper frame downward protruding rail (downward protruding rail), 312, 412 Upper rail guide (rail accommodation guide part)

Claims (1)

An inner window that is disposed on the indoor side of an outer window,
A frame body having an upper frame;
The frame includes an inner screen arranged inside the building and slidable laterally, and an outer screen arranged outside the building and slidable laterally.
The upper frame has a downward protruding rail provided on the upper side of the inner screen and protruding downward, and an indoor side downward extending wall portion extending downward on the indoor side of the inner screen,
The inner screen has a rail accommodation guide portion that opens upward and accommodates at least a portion of the downward protruding rail to guide the inner screen's sliding movement in the lateral direction,
The inner screen is provided with a movable protruding portion that is movable to a protruding position protruding above the upper end of the inner screen between the downward protruding rail and the indoor side downward extending wall portion in the prospective direction,
An inner window, wherein the movable protrusion is provided on the inner screen so as to be slidable upwardly above the upper end of the inner screen.

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