Inner window

Abstract

To provide an inner window capable of preventing a sash from falling off.SOLUTION: An inner window 1 is disposed at an indoor side of an outer window and has a frame body 2 having a headsill 21, and sashes 3, 4 that are disposed inside the frame body 2 and can slide in a lateral direction. The headsill 21 has downward protruding rails 212, 213 that protrude downward. The sashes 3, 4 have rail storing guide portions 312, 412 that open upward and store at least a portion of the downward protruding rails 212, 213 and guide sliding movement in the lateral direction of the sashes 3, 4. The sashes 3, 4 have moving protrusions 7, 8 that can move to a protrusion position to protrude to an upper side of top edges of the sashes 3, 4.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present disclosure relates to an inner window, and more particularly to an inner window that is disposed on the indoor side of an outer window in a double-glazed window. [Background technology]

[0002] Conventionally, double-glazed windows have been known, which are constructed by providing an inner window and an outer window in an opening of a building (see, for example, Patent Document 1). By providing a double-glazed 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 through renovation.

[0003] An 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. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2019-152002 A Summary of the Invention [Problem to be solved by the invention]

[0005] Inner windows are sometimes installed on the inside of existing windows during renovations. In this case, due to insufficient adjustment during construction or deformation of the mounting surface due to aging, the downward protruding rail of the upper frame and the rail accommodation guide of the shoji may not fit together as well, causing the shoji to fall off and the inner window's shoji to collapse. Therefore, measures to prevent inner window shoji from falling off are desired.

[0006] The present disclosure aims to provide an inner window that can prevent the shoji screen from falling off. [Means for solving the problem]

[0007] The present disclosure relates to an inner window that is placed on the indoor side of an exterior window, comprising a frame body having an upper frame, and a shoji screen that is placed within the frame body and can slide laterally, wherein the upper frame has a downwardly protruding rail that protrudes downward, the shoji screen has a rail accommodating guide portion that opens upward and accommodates at least a part of the downwardly protruding rail to guide the lateral sliding movement of the shoji screen, and the shoji screen has a movable protruding portion that is movable to a protruding position that protrudes upward beyond the upper end of the shoji screen. [Brief description of the drawings]

[0008] [Figure 1] This is a front view of the inner window of the embodiment as seen from the indoor side. [Diagram 2] 2 is a cross-sectional view taken along line AA in FIG. 1. [Diagram 3] FIG. 2 is a cross-sectional view taken along line BB in FIG. [Figure 4] FIG. 2 is a perspective view showing a tip-over prevention mechanism according to the first embodiment. [Diagram 5] FIG. 11 is a cross-sectional view showing a tipping prevention mechanism according to a second embodiment. [Figure 6] FIG. 11 is a perspective view showing a tip-over prevention mechanism according to a second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, the first embodiment of the present disclosure will be described in detail with reference to the drawings. In this specification, the term "visible direction" refers to the surface direction of the glass of 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".

[0010] 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. The 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.

[0011] 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 figure, is configured by fitting an inner sash and an outer sash into a rectangular window frame so that they can be opened and closed.

[0012] The inner window 1 is disposed 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, and an outer window and an inner window may be installed simultaneously during new construction.

[0013] 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), and an inner shoji screen 3 (shoji screen) and an outer shoji screen 4 (shoji screen) that are arranged within the window frame 2 and can be opened and closed.

[0014] 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 rectangle 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, formed by extrusion molding. 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).

[0015] As shown in Fig. 1, the upper frame 21 extends in the left-right direction (horizontal direction) in the front view direction at the top of the window frame 2. As shown in Fig. 2, the upper frame 21 has an upper frame upper panel portion 211, an upper frame downward-protruding rail 212 (downward-protruding rail) for an inner shoji screen, an upper frame downward-protruding rail 213 (downward-protruding rail) for an outer shoji screen, and an upper frame interior downward-extending wall portion 214 as shown in Fig. 2.

[0016] The upper frame upper plate portion 211 is disposed on the upper portion of the upper frame 21 and is formed in a plate shape extending in the projection direction.

[0017] 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 in 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 in the left-right direction (horizontal direction) in the viewing direction, and are formed over the entire longitudinal area of ​​the upper frame 21.

[0018] The inner screen 3 can slide left and right in the front direction within the window frame 2 by the inner screen upper frame downward-protruding rail 212 moving while being guided by an upper rail guide 312 (rail housing 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 direction within the window frame 2 by the outer screen upper frame downward-protruding rail 213 moving while being guided by an upper rail guide 412 (rail housing guide portion) (described later) formed at the upper end of the outer screen 4.

[0019] The upper frame indoor interior downward extending wall portion 214 is disposed on the indoor side of the inner shoji screen 3, and extends downward a predetermined distance from the end of the upper frame upper panel portion 211 facing the indoor side in the forward direction. In this embodiment, the lower end portion 214a of the upper frame indoor 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.

[0020] As shown in Fig. 1, the bottom frame 22 extends in the left-right direction (horizontal direction) in the front direction at the bottom of the window frame 2. As shown in Fig. 2, the bottom frame 22 has a lower rail 221 for an inner shoji screen and a lower rail 222 for an outer shoji screen.

[0021] 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.

[0022] The lower rail 222 for the outer screen is erected upward on the upper surface of the outer window side (outdoor side) of the bottom 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 within the window frame 2 in the front direction.

[0023] 1, the left and right vertical frames 23, 24 extend in the up-down direction at both left and right ends in the front direction of the upper frame 21 and the lower frame 22. The left and right vertical frames 23, 24 form the sides of the window frame 2.

[0024] The inner screen 3 and the outer screen 4 are both sliding doors that are configured to be able to slide left and right (horizontally) in the front direction, thereby forming a so-called sliding window in which the opening in the window frame 2 can be closed or opened.

[0025] As shown in Fig. 1, the inner shoji screen 3 is composed of a rectangular frame 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 35. The outer shoji screen 4 is composed of a rectangular frame 45 formed by a long upper frame 41, a long lower frame 42, a left and right vertical frame, a front frame 44, and glass 46 fitted and fixed in the frame 45.

[0026] 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 is provided on the front surface of the inner frame 33 of the inner screen 3.

[0027] As shown in Fig. 2, rollers 321, 421 are provided at the lower inside of the lower frames 32, 42. The movement of the rollers 321, 421 in the left-right direction in the visible direction is guided by a lower rail 221 for an inner door and a lower rail 222 for an outer door.

[0028] As shown in Fig. 2, the upper frame 31, 41 has a lower glass groove 311, 411 formed in the lower part and an upper rail guide 312, 412 (rail receiving guide part) formed in the upper part. 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.

[0029] The upper rail guides 312, 412 open upward. The upper rail guides 312, 412 accommodate (place) the lower side of the inner frame upper frame downward-protruding rail 212 and the lower side of the outer frame upper frame downward-protruding rail 213. The upper rail guides 312, 412 accommodate at least a portion of the inner frame upper frame downward-protruding rail 212 and the outer frame upper 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 (lateral direction).

[0030] A pair of airtight materials 51 arranged at a distance in the projection direction are provided on the opening edge at the upper end of the upper rail guides 312, 412. The airtight materials 51 abut against the side surfaces of the upper frame 21 of the inner shoji upper frame downwardly protruding rail 212 or the upper frame 213 of the outer shoji upper frame downwardly protruding rail 213.

[0031] As shown in Figure 1, a vibration prevention member 6 and a protruding movement mechanism 7 are respectively arranged 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.

[0032] In the following description, the details of the anti-sway member 6 and the protruding movement mechanism 7 arranged on the top of the end frame 34 of the inner screen 3 will be described. 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 end frame 34 of the inner screen 3 with the left and right orientation reversed, so the description will be omitted. The configuration of the anti-sway member 6 arranged on the top of the end frame 44 of the outer screen 4 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 end frame 34 of the inner screen 3 and the top of the inner frame 33 of the outer screen 3, so the description 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 end frame 34 of the inner screen 3 will be described, and the description of the protruding movement mechanism 7 arranged in other parts will be omitted.

[0033] As shown in Figure 3, the anti-sway member 6, which is placed on the upper part of the end frame 34 of the inner screen 3, is placed in an opening 37 that opens upward and is formed in the upper part of the 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).

[0034] 3 and 4, the anti-sway member 6 has an anti-sway member main body 61 that is U-shaped in cross section with an open upper portion, and a plate-shaped engaging packing plate 63. The anti-sway member main body 61 and the engaging packing plate 63 are integrally formed. The anti-sway member main 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 main body 61.

[0035] The anti-sway member body 61 is disposed within the opening 37 of the door end frame 34. The anti-sway member body 61 has a cross-sectional shape when cut along the projection direction that is U-shaped in cross section opening upward. The anti-sway member body 61 has a bottom surface portion 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 incline at the upper part of the U-shape so that the interval in the projection direction narrows from the lower side to the upper side toward the center in the projection direction.

[0036] 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 facing direction. The engaging packing plate 63 is attached to the end face of the outer end in the left-right direction of the facing 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.

[0037] 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.

[0038] The anti-sway member 6 has an inner screen upper frame downward-protruding rail 212 disposed 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, thereby suppressing rattling between the inner screen 3 and the window frame 2.

[0039] 3 and 4, the protruding movement mechanism 7 is configured to be movable to a protruding position protruding 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 vertically movable plate 71, a pair of guide members 72, 72, and two screws 73, 73.

[0040] The vertically movable plate 71 is formed in a plate shape extending 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 positioned 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 extending in the vertical direction.

[0041] The pair of guide portions 72, 72 guide the up-down movement of the up-down moving plate 71. The pair of guide portions 72, 72 are formed at both left-right ends of the up-down moving plate 71, protruding from the indoor-side projecting surface of the door end frame 34, and extend in the up-down direction. The pair of guide portions 72, 72 are formed in an L-shape in cross section, facing each other with the open side located on the inside.

[0042] Two screws 73, 73 are disposed 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 the retracted position by tightening the two screws 73. In this way, the protruding movement mechanism 7 is provided on the inner screen 3 so as to be slidable upward from the upper end of the inner screen 3.

[0043] Next, we will explain the installation procedure of the inner window 1. We will explain the case where the inner screen 3 and the outer screen 4 are assembled into the window frame 2 when installing the inner window 1. With the vertically movable plate 71 of the protruding movement mechanism 7 positioned in the retracted position (the position indicated by the two-dot chain line in FIG. 4), the inner screen 3 and the outer screen 4 are assembled and erected into the window frame 2 in a so-called Kendon style.

[0044] When incorporating the outer screen 4 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 erected 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 wheel 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 then it is lifted further upward and then lowered downward to insert the rollers 321 of the inner screen 3 into the inner screen lower rail 221 of the lower frame 22.

[0045] Thereafter, the anti-sway member 6 is adjusted at the left and right ends of the upper end of the inner screen 3 so that it properly engages with the inner screen 3 and the downward protruding rail 212 of the upper frame for the inner screen of the upper frame 21. The anti-sway member 6 is adjusted at the left and right ends of the upper end of the outer screen 4 so that it properly engages with the outer screen 4 and the downward protruding rail 213 of the upper frame for the outer screen of the upper frame 21.

[0046] 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 at the protruding position. As a result, as shown in Figure 3, the vertically movable plate 71 can be moved upward to a position where it is caught on the upper frame interior downward extending wall part 214 of the upper frame 21 or the inner frame downward protruding rail 212 for the inner sash.

[0047] The position of the upper end 712 of the vertically movable plate 71 is located a predetermined 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 at a position where the upper end 712 of the vertically movable plate 71 can be prevented from catching 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, even if the engagement between the inner screen 3 and the upper frame downward protruding rail 212 of the window frame 2 becomes weaker due to aging or the like, thereby preventing the inner screen 3 from coming off the window frame 2.

[0048] Therefore, even if the inner screen 3 becomes less attached due to deterioration over time, the vertically moving plate 71 is likely to catch on the upper frame 21's inner-side downward extending wall portion 214 and the upper frame downward protruding rail 212 for the inner screen, thereby preventing the inner screen 3 from falling over.

[0049] According to this embodiment, the following effects are achieved: The inner window 1 of this embodiment includes a door (inner door 3, outer door 4) that is arranged in the window frame 2 and can slide laterally, the upper frame 21 has a downward protruding rail (inner door upper frame downward protruding rail 212, outer door upper frame downward protruding rail 213) that protrudes downward, the door (inner door 3, outer door 4) has a rail accommodation guide part (upper rail guide 312, 412, anti-sway member 6) that opens upward and accommodates at least a part of the downward protruding rail (inner door upper frame downward protruding rail 212, outer door upper frame downward protruding rail 213) to guide the door (inner door 3, outer door 4) sliding movement in the lateral direction, and the door (inner door 3, outer door 4) has a protruding movement mechanism part 7 that can move to a protruding position that protrudes upward from the upper end of the door (inner door 3, outer door 4).

[0050] This allows the vertically movable plate 71 to be moved upward to a position where it catches on the upper frame house inner 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 house inner 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 the like, the vertically movable plate 71 is likely to catch on the upper frame house inner 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.

[0051] In this embodiment, the protruding movement mechanism 7 is provided on the screens (inner screen 3, outer screen 4) so ​​as to be slidable upward from the upper end of the screens (inner screen 3, outer screen 4). As a result, by sliding the vertically moving plate 71 of the protruding movement mechanism 7, the vertically moving plate 71 of the protruding movement mechanism 7 can be easily moved upward, making it easy to prevent the inner screen 3 from falling over.

[0052] Next, a second embodiment will be described. The second embodiment is a modified version of the first embodiment, and includes a protruding movement mechanism 8 instead of the protruding movement mechanism 7 of the first embodiment. 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.

[0053] The protruding movement mechanism 8 of the second embodiment will be described. As shown in Fig. 5 and Fig. 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.

[0054] 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 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.

[0055] The upper movable plate 82 is connected to the outer end of the fixed plate 81 in the left-right direction in the front view direction via a biasing portion 83. The upper movable plate 82 is configured to be movable between a protruding position (position indicated by a solid line in FIG. 6) above the upper end of the inner screen 3 and a retracted position (position indicated by a two-dot chain line in FIG. 5) which is a position below the protruding position and is used when fitting the inner screen 3 into the window frame 2.

[0056] The biasing portion 83 biases the upper moving plate 82 towards the protruding position. When fitting the inner screen 3 into the window frame 2, the upper moving plate 82 is pressed by hand towards the fixed plate 81 against the biasing force of the biasing portion 83 while being fitted. Then, 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 up on the side protruding upward beyond the upper end of the inner screen 3.

[0057] 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 by the urging force.

[0058] In this way, as shown in Figure 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 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.

[0059] 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 shoji upper frame downward protruding rail 212 of the upper frame 21. Therefore, even if the engagement between the inner shoji upper frame downward protruding rail 212 of the window frame 2 and the inner shoji 3 becomes weaker due to aging or the like, the upper moving plate 82 can easily catch on the inner shoji upper frame downward protruding rail 212 of the upper frame 21, preventing the inner shoji 3 from falling over.

[0060] In this embodiment, the protruding movement mechanism 8 is biased to rise up 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.

[0061] In this embodiment, the protruding movement mechanism 8 is provided on the anti-sway member 6. This makes it possible to suppress the vibration of the inner screen 3 at the anti-sway member 6, while preventing the inner screen 3 from falling over at the protruding movement mechanism 8 provided on the anti-sway member 6.

[0062] The present disclosure is not limited to the above-described embodiments, and modifications and improvements within the scope of achieving the object of the present disclosure are included in the present disclosure.

[0063] 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.

[0064] 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.

[0065] In the above embodiment, the window frame 2 of the inner window 1 is made of a resin frame, but the present invention is not limited to this. The window frame of the inner window 1 may be made of a metal frame, for example. [Explanation of symbols]

[0066] 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

[Claim 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 on the indoor side and capable of sliding laterally, and an outer screen arranged on the outdoor side and capable of sliding 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 lateral sliding movement, 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.

Images