Sliding sash

Abstract

To use two rails for sliding sashes with four or more shoji screens, and to use one single screen for ventilation even when one of the two central shoji screens is moved.SOLUTION: A sliding sash 1 has four or more shoji screens, namely, a first outer shoji screen 11 and a second outer shoji screen 13 that move on an outer shoji rail 17a, and a first inner shoji screen 12 and a second inner shoji screen 14 that move on an inner shoji rail 17b, and when all the shoji screens 11-14 are closed, the moving sequence is the first outer shoji screen 11, first inner shoji screen 12, second outer shoji screen 13, second inner shoji screen 14, or reversed. The outer shoji screen 11d of the first outer shoji screen 11 is provided with a crescent receiver 11d11 that locks and unlocks the crescent lock 12c11 provided on the inner shoji screen 12c of the first inner shoji screen 12, while the outer shoji screen 13d of the second outer shoji screen 13 is provided with a crescent receiver 13d11 that locks and unlocks the crescent lock 14c11 provided on the inner shoji screen 14c of the second inner shoji screen 14.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a sliding sash in which four or more shoji screens move on two rails, an outer shoji screen rail and an inner shoji screen rail, of a sash frame (including a window frame). [Background technology]

[0002] Sliding sashes are usually made up of two shoji screens, but in the case of large-opening sash frames, structures in which three shoji screens are installed (see, for example, Patent Documents 1 and 2) or four shoji screens are installed (see, for example, Patent Documents 3 and 4) have been proposed. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Utility Model Application Publication No. 51-105838 [Patent Document 2] Japanese Patent Application Publication No. 2023-147609 [Patent Document 3] Jikko No. 63-19508 [Patent Document 4] Patent No. 7300534 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the sliding sashes of the above-mentioned Patent Documents 1 and 2, three rails are provided in the front direction on which the three shoji screens run, which reduces the interior floor space and, in the case of two large shoji screens, causes problems such as the weight of each shoji screen and the window frame itself becoming heavy.

[0005] Furthermore, in the sliding sashes of Patent Documents 3 and 4 mentioned above, two outer shoji screens and two inner shoji screens make up four shoji screens, with the two outer shoji screens set apart on the left and right vertical frame sides and moving on the same outer shoji rails, while the two inner shoji screens are set in the center and move on the same inner shoji rails so that they butt against each other, so when the two inner shoji screens are closed, as in the sliding sash of Patent Document 3, their joining frames are lined up so that they butt against each other, which creates problems when viewed from inside the room, making them look thick and noticeable from a design perspective.In addition, in the sliding sash of Patent Document 4, although the joining frames are lined up so that they butt against each other when the two inner shoji screens are closed, the joining frame of one inner shoji screen is formed so that it overlaps the joining frame of the other inner shoji screen, which causes the joining frame of one inner shoji screen to be too wide in the visible direction.

[0006] Furthermore, when ventilating a sliding sash made up of four or more shoji screens, the central joint frame is often opened. Therefore, in the sliding sashes of Patent Documents 3 and 4 mentioned above, when the two outer shoji screens are moved toward the left and right vertical frames and the space between the two inner shoji screens is opened to the left and right, the two screen screens must be butted together so that they are placed on the outer joint frames of each of the two outer shoji screens, which creates problems such as insects easily entering the room.

[0007] Therefore, the present invention has been made to solve such problems, and aims to provide a sliding sash that can be used with two rails, one for the outer shoji screen and one for the inner shoji screen, even in sliding sashes with four or more shoji screens installed, and that can be used with a single screen door even when one of the two central shoji screens is moved for ventilation. [Means for solving the problem]

[0008] In order to solve the above problem, the sliding sash of the present invention is a sliding sash having two rails: an outer shoji rail along which the first outer shoji and second outer shoji move, and an inner shoji rail along which the first inner shoji and second inner shoji move, and is characterized in that when the sliding sash is closed, the first outer shoji, the first inner shoji, the second outer shoji, and the second inner shoji are arranged on the outer rail or the inner shoji rail in the order of, or vice versa, from one vertical frame of the sash frame to the other vertical frame. Furthermore, in the sliding sash of the present invention, the first inner shoji screen has an inner joint frame that overlaps with the outer joint frame of the first outer shoji screen when the sliding sash is closed, and an inner central joint frame that overlaps with the outer central joint frame of the second outer shoji screen, while the second outer shoji screen has an outer joint frame that overlaps with the inner joint frame of the second inner shoji screen when the sliding sash is closed, and an outer central joint frame that overlaps with the inner central joint frame of the first inner shoji screen. Furthermore, the sliding sash of the present invention is characterized in that the outer central joint frame of the second outer shroud is provided with a smoke-reflecting piece that opens toward the first outer shroud, while the inner central joint frame of the first inner shroud is provided with a smoke-reflecting piece that opens toward the second inner shroud and engages with the smoke-reflecting piece of the second outer shroud. Furthermore, the sliding sash of the present invention is further characterized in that the outer joint frame of the second outer sash is provided with a smoke-reflecting piece that opens in the same direction as the smoke-reflecting piece of the outer central joint frame of the second outer sash, while the inner joint frame of the first inner sash is provided with a smoke-reflecting piece that opens in the same direction as the smoke-reflecting piece of the inner central joint frame of the first inner sash. Furthermore, the sliding sash of the present invention is characterized in that when the outer central joint frame of the second outer shawl, which moves on the outer shawl rail, and the inner joint frame of the second inner shawl, which moves on the inner shawl rail, overlap, a gap is created in the forward direction between the smoke deflector piece of the outer central joint frame of the second outer shawl and the smoke deflector piece of the inner joint frame of the second inner shawl, so that they do not interfere with each other. Furthermore, the sliding sash of the present invention is characterized in that the outer sash frame of the first outer sash is provided with a crescent receiver that locks and unlocks the crescent lock provided on the inner sash frame of the first inner sash frame, while the outer sash frame of the second outer sash is provided with a crescent receiver that locks and unlocks the crescent lock provided on the inner sash frame of the second inner sash frame. The sliding sash according to the present invention is also characterized in that a handle is provided on the outer central joint frame of the second outer sash. [Effects of the Invention]

[0009] In the sliding sash of the present invention, the first outer shoji screen, the first inner shoji screen, the second outer shoji screen, and the second inner shoji screen are arranged on the outer rail or the inner shoji rail in the order of, or vice versa, from one vertical frame of the sash frame to the other vertical frame. Therefore, even in the case of a sliding sash with four shoji screens, it is possible to accommodate this by simply changing the length of the two outer shoji screen rails and the inner shoji screen rail that make up a normal two-panel sliding sash, thereby reducing manufacturing costs. Furthermore, since there is no need to increase the frame projection, a larger interior space can be secured and the weight of the entire sliding sash can be reduced. Furthermore, when the first inner screen, the central one of the four screens, is moved to allow ventilation, it is possible to use only one screen door, which makes it easy and reliable to prevent insects and other pests from entering from outside, thereby improving the comfort of the room. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a view showing an interior of a sliding sash according to an embodiment of the present invention. [Figure 2] 1 is a cross-sectional view of a sliding sash according to an embodiment of the present invention. [Figure 3] This is an enlarged cross-sectional view of the main part, focusing on the joining portion of the first outer screen and the first inner screen in Figure 2. [Figure 4] This is an enlarged cross-sectional view of the main parts, focusing on the joining portion of the first inner shroud, the second outer shroud, and the second inner shroud in Figure 2. [Figure 5] 1 is a vertical cross-sectional view of a sliding sash according to an embodiment of the present invention. [Figure 6] 1 is a cross-sectional view showing a state in which ventilation is performed by moving the first inner shoji screen to the left in the figure and opening one shoji screen in a sliding sash according to an embodiment of the present invention. [Figure 7] This is a cross-sectional view showing the state in which two sliding sashes are opened to allow ventilation by moving the first inner sash to the left in the figure and the second outer sash to the right in the figure in an embodiment of the sliding sash of the present invention. [Figure 8] This is an enlarged cross-sectional view of a key part showing an example of adjusting the horizontal position of a crescent receiver provided on a second outer screen in a sliding sash according to an embodiment of the present invention. [Figure 9] This is an enlarged cross-sectional view of a key part showing an example of adjusting the horizontal position of a crescent lock provided on the first inner shoji screen in a sliding sash according to an embodiment of the present invention. [Figure 10] This is an interior view of an embodiment of the sliding sash of the present invention in which a handle is provided on the interior side of the second outer shoji screen. [Figure 11] This is a cross-sectional view of an embodiment of a sliding sash according to the present invention in which a handle is provided on the interior side of the second outer screen. [Figure 12] This is a cross-sectional view showing the state in which the second outer screen has been moved to the right in the figure using the handle provided on the inside of the second outer screen in a sliding sash of an embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0011] Below, a sliding sash 1 according to an embodiment of the present invention will be described with reference to the drawings. Note that the embodiment described below is merely one example of the present invention, and the present invention is not limited to the embodiment described below, but can be modified as appropriate within the scope of the technical concept of the present invention. Note that the sliding sash 1 of the embodiment also includes a sliding window.

[0012] <Configuration of the sliding sash 1 according to the embodiment> As shown in Figure 1, which is an interior view of the sliding sash 1 as seen from inside the room, the sliding sash 1 of an embodiment of the present invention is a four-panel sliding sash (including sliding windows) having four shoji screens 11 to 14, namely, a first outer shoji screen 11, a first inner shoji screen 12, a second outer shoji screen 13, and a second inner shoji screen 14, which move on two rails 17a, 17b, either the outer shoji screen rail 17a or the inner shoji screen rail 17b, between an upper frame 16, a lower frame 17, and left and right vertical frames 18, 19.When the four shoji screens 11 to 14 are closed, they are arranged in the order of the first outer shoji screen 11, the first inner shoji screen 12, the second outer shoji screen 13, and the second inner shoji screen 14, from the left vertical frame 18 to the right vertical frame 19 in Figure 1.

[0013] In addition, on the exterior side of the outer screen rail 17a of the lower frame 17, a screen rail 17c (see Fig. 3) along which two screen doors 15, 15 move is provided, as shown in Figs. 2 and 3. In the drawings, the two screen doors 15, 15 are shown or omitted as appropriate, as needed.

[0014] (First outer screen 11) As shown in Figures 1 to 3, the first outer shoji screen 11 is composed of a shoji glass 11e surrounded by an upper frame 11a, a lower frame 11b, left and right vertical frames (door end frame 11c) and an outer joint frame 11d (see Figure 2), and the lower frame 11b is provided with a shoji screen roller 11f that rotates and runs on an outer shoji screen rail 17a.

[0015] The door frame 11c is made up of a metal member 11c1 such as aluminum and a resin cover 11c2 such as vinyl chloride resin from the viewpoint of high thermal insulation and prevention of condensation, and the resin cover 11c2 is provided with a recessed pull tab 11c3.

[0016] Like the door end frame 11c, the outer door frame 11d is also composed of a metal member 11d1 such as aluminum and a resin cover 11d2 such as vinyl chloride resin, and the metal member 11d1 is provided with a crescent receiver 11d11 that is exposed or protrudes from the outer resin cover 11d2 and that locks and unlocks the crescent lock 12c11 described below that is provided on the inner door frame 12c of the first inner shoji screen 12, and is also provided with a smoke deflector piece 11d12 that improves security and wind pressure resistance, etc.

[0017] The smoke-reflecting piece 11d12 of the outer joint frame 11d of the first outer shoji screen 11 is formed in an approximately L-shape by an upright portion 11d12a that stands in the front direction as shown in Figure 3, etc., and an engaging portion 11d12b that bends in the front direction from the upright portion 11d12a, and the engaging portion 11d12b extends toward the door end frame 11c, opens toward the door end frame 11c, and protrudes toward the room (front direction) beyond the plastic cover 11d2 of the outer joint frame 11d, exceeds the plastic cover 12c2 of the inner joint frame 12c, and is formed to engage with the smoke-reflecting piece 12c12 of the inner joint frame 12c of the second inner shoji screen 12.

[0018] Furthermore, the upper frame 11a and lower frame 11b of the first outer shoji screen 11 are also made up of metal members 11a1, 11b1 such as aluminum and resin covers 11a2, 11b2 such as vinyl chloride resin, as shown in Figure 5. The metal member 11b1 of the lower frame 11b is provided with a shoji door roller 11f, and is also provided with a lower lock 11b3 (see Figure 1) that locks the shoji screen by raising the lock piece and abutting against the inner joining frame 12c of the first inner shoji screen 12, which will be described later.

[0019] (First inner shoji screen 12) The first inner shoji screen 12, like the first outer shoji screen 11, is composed of a shoji glass 12e surrounded by an upper frame 12a, a lower frame 12b, and left and right vertical frames, an inner joint frame 12c and an inner central joint frame 12d, and the lower frame 12b is provided with a shoji door roller 12f (see Figure 3) that rotates and runs on the inner shoji rail 17b.

[0020] The inner door frame 12c is also made of a metal member 12c1 such as aluminum and a resin cover 12c2 such as vinyl chloride resin. The metal member 12c1 has a crescent lock 12c11 protruding from the resin cover 12c2 to lock and unlock the crescent receiver 11d11 of the outer door frame 11d of the first outer door frame 11. The outer surface of the inner door frame 12c has a smoke deflector piece 12c12 that engages with the smoke deflector piece 11d12 of the outer door frame 11d of the first outer door frame 11.

[0021] The smoke deflector piece 12c12 of the inner joint frame 12c is formed in an approximately L-shape by an upright portion 12c12a that stands in the forward direction toward the outside of the room, and an engaging portion 12c12b that is approximately flush with the resin cover 12c2 of the inner joint frame 12c from the tip of the upright portion 12c12a and bends in the direction of the inner central joint frame 12d, that is, in the forward direction to the right in Figures 1, 2, and 3, and opens on the side of the inner central joint frame 12d.

[0022] Like the inner central joint frame 12c, the inner central joint frame 12d is composed of a metal member 12d1 such as aluminum and a resin cover 12d2 such as polyvinyl chloride resin, and a smoke deflector piece 12d12 is provided on the metal member 12d1 via the resin cover 12d2 to improve security and wind pressure resistance.

[0023] The smoke deflector piece 12d12 of the inner central joint frame 12d of the first inner shoji screen 12 is formed in an approximately L-shape with an upright portion 12d12a that stands in the forward direction toward the outside of the room and an engaging portion 12d12b that bends from the tip of the upright portion 12d12a in the forward direction to the right in Figures 1 and 2, similar to the engaging portion 12c12b of the smoke deflector piece 12c12 of the inner joint frame 12c, and opens to the right in Figures 1 and 2, similar to the smoke deflector piece 12c12 of the inner joint frame 12c.

[0024] Furthermore, the upper and lower frames 12a and 12b of the first inner shoji screen 12 are also made up of metal members 12a1 and 12b1 such as aluminum and resin covers 12a2 and 12b2 such as vinyl chloride resin, as shown in Figure 5, and a shoji door roller 12f is provided on the metal member 11b1 of the lower frame 12b.

[0025] Furthermore, when the sliding sash 1 of this embodiment is configured with four shoji screens 11 to 14, the inner central joint frame 12d of the first inner shoji screen 12 is not provided with a crescent lock or crescent receiver.

[0026] (2nd outer screen 13) Like the first outer shoji screen 11 and the first inner shoji screen 12, the second outer shoji screen 13 is also composed of a shoji glass 13e surrounded by an upper frame 13a, a lower frame 13b, and left and right vertical frames, an outer central joint frame 13c and an outer joint frame 13d, and the lower frame 13b is provided with a shoji door roller (not shown) that rotates and runs on an outer shoji rail 17a.

[0027] The outer central joint frame 13c of the second outer shoji screen 13 is similarly composed of a metal member 13c1 such as aluminum and a resin cover 13c2 such as polyvinyl chloride resin, and a smoke-reflecting piece 13c12 is provided on the visible surface of the metal member 13c1 facing the interior of the room to improve security and wind pressure resistance.

[0028] The smoke deflector piece 13c12 of the outer central joint frame 13c of the second outer shoji screen 13 is formed in an approximately L-shape with an upright portion 13c12a that stands in the forward direction toward the inside of the room and an engaging portion 13c12b that bends from the tip of the upright portion 13c12a toward the first outer shoji screen 11, that is, in the forward direction toward the left in Figures 1 and 2, and engages with the smoke deflector piece 12d12 of the inner central joint frame 12d of the first inner shoji screen 12, so it opens to the left in Figures 1 and 2.

[0029] Here, the length of the upright portion 13c12a of the smoke return piece 13c12 is adjusted so that the engaging portion 13c12b of the smoke return piece 13c12 is approximately flush with the indoor side of the plastic cover 13c2 of the outer central joint frame 13c of the second outer shoji screen 13, as shown in Figure 4 etc. Therefore, the smoke return piece 12d12 of the inner central joint frame 12d of the first inner shoji screen 12, which engages with the smoke return piece 13c12 of the second outer shoji screen 13, has the length of the upright portion 12d12a adjusted to be longer so that its engaging portion 12d12b exceeds the plastic cover 13c2 of the outer central joint frame 13c.

[0030] The outer joint frame 13d of the second outer shoji screen 13 is also composed of a metal member 13d1 such as aluminum and a resin cover 13d2 such as vinyl chloride resin, and the metal member 13d1 has a crescent receiver 13d11 protruding from the resin cover 13d2 to lock and unlock the crescent lock 14c11 of the inner joint frame 14c of the second inner shoji screen 14, and a smoke return piece 13d12 is provided on the interior side of the outer joint frame 13d to engage with the smoke return piece 14c12 of the inner joint frame 14c of the second inner shoji screen 14, which will be described later.

[0031] The smoke-reflecting piece 13d12 of the outer joint frame 13d is formed in an approximately L-shape by an upright portion 13d12a that stands in the forward direction toward the inside of the room, as shown in Figure 4, etc., and an engaging portion 13d12b that bends from the tip of the upright portion 13d12a toward the outer central joint frame 13c, that is, in the forward direction toward the left in Figures 1 and 2, and is configured to engage with the smoke-reflecting piece 14c12 of the inner joint frame 14c of the second inner shoji screen 14, which will be described later.

[0032] Here, the smoke return piece 13d12 of the outer joint frame 13d is different from the engaging portion 13c12b of the smoke return piece 13c12, and the length of the standing portion 13d12a is adjusted so that the engaging portion 13d12b protrudes from the indoor side of the resin cover 13d2 of the outer joint frame 13d toward the indoor side, as shown in Figure 4 and Figure 8 described later, and is formed to engage with the engaging portion 14c12b of the smoke return piece 14c12 of the inner joint frame 14c of the second inner shoji screen 14 described later. In other words, in the second outer shoji screen 13, the indoor side of the resin cover 13c2 of the outer central joint frame 13c and the indoor side of the resin cover 13d2 of the outer joint frame 13d are flush with each other, so the engagement portion 13d12b of the smoke return piece 13d12 of the outer joint frame 13d is formed so as to protrude further toward the indoor side than the engagement portion 13c12b of the smoke return piece 13c12 of the outer central joint frame 13c and the engagement portion 14c12b of the smoke return piece 14c12 of the inner joint frame 14c of the second inner shoji screen 14 described later.

[0033] In addition, the upper frame 13a and lower frame 13b of the second outer shoji screen 13 are also made up of metal parts such as aluminum and a resin cover such as polyvinyl chloride resin, and the lower frame 13b is provided with a shoji door roller (not shown), as well as a lower lock 13b3 (see Figure 1) that locks the shoji screen by raising the lock piece and abutting against the inner joining frame 14c (described later) of the second inner shoji screen 14.

[0034] (Second inner shoji screen 14) Like the first outer shoji 11 and the first inner shoji 12, the second inner shoji 14 is also composed of a shoji glass 14e surrounded by an upper frame 14a, a lower frame 14b, and left and right vertical frames, an inner joint frame 14c, and a door end frame 14d, and the lower frame 14b is provided with a shoji door roller (not shown) that rotates and runs on an inner shoji rail 17b.

[0035] The inner joint frame 14c is also composed of a metal member 14c1 such as aluminum and a resin cover 14c2 such as polyvinyl chloride resin, and the metal member 14c1 is provided with a crescent lock 14c11 that locks and unlocks the crescent receiver 13d11 of the outer joint frame 13d of the second outer screen 13 so that it is exposed or protrudes from the outer resin cover 14c2, and a smoke return piece 14c12 that engages with the smoke return piece 13d12 of the outer joint frame 13d of the second outer screen 13 is provided on the outdoor side of the inner joint frame 14c.

[0036] The smoke deflector piece 14c12 of the inner door frame 14c is formed in an approximately L-shape with an upright portion 14c12a that stands up in the front direction toward the outside of the room and an engaging portion 14c12b that bends from the upright portion 14c12a in the front direction to the right as shown in Figures 1 and 2, and the engaging portion 14c12b opens toward the door frame 14d.

[0037] Here, as will be described later, in order for the second outer shoji screen 13 to move to the right in Figure 4, or the second inner shoji screen 14 to move to the left in Figure 4 so that the second outer shoji screen 13 and the second inner shoji screen 14 can intersect without interfering with or colliding with each other, the length of the upright portion 14c12a of the smoke return piece 14c12 is adjusted so that the engagement portion 14c12b of the smoke return piece 14c12 of the inner joint frame 14c is almost flush with the outdoor surface of the plastic cover 14c2 of the inner joint frame 14c of the second inner shoji screen 14, just like the smoke return piece 13c12 of the outer central joint frame 13c of the second outer shoji screen 13.

[0038] Therefore, between the engagement portion 14c12b of the smoke return piece 14c12 of the inner joint frame 14c of the second inner shoji screen 14 and the engagement portion 13c12b of the smoke return piece 13c12 of the outer central joint frame 13c of the second outer shoji screen 13, there is a gap S (see Figure 8) in the forward direction (indoor / outdoor direction), just like between the plastic cover 14c2 of the inner joint frame 14c of the second inner shoji screen 14 and the plastic cover 13c2 of the outer central joint frame 13c of the second outer shoji screen 13.Therefore, even if the second outer shoji screen 13 and the second inner shoji screen 14 cross and pass each other, as shown in Figure 8, etc., which will be described later, the engagement portion 14c12b and the engagement portion 13c12b will not interfere with or collide with each other.

[0039] The door frame 14d is made up of a metal member 14d1 such as aluminum and a resin cover 14d2 such as vinyl chloride resin from the viewpoint of high thermal insulation and prevention of condensation, and the resin cover 14d2 is provided with a recessed pull tab 14d3.

[0040] Furthermore, the upper frame 14a and lower frame 14b of the second inner shoji screen 14 are similarly constructed of a metal member such as aluminum and a resin cover such as polyvinyl chloride resin, and the metal member of the lower frame 14b is provided with a shoji door roller (not shown).

[0041] (Screen door 15) The screen door 15 is composed of a mesh section 15e surrounded by an upper frame 15a and a lower frame 15b (see Figure 5) and left and right vertical frames 15c and 15d (see Figure 3), and the lower frame 15b is provided with a screen door roller 15b1 (see Figure 5) that rotates and runs on a screen door rail 17c.

[0042] The size of the screen door 15 is approximately the same as that of the shoji screens 11 to 14, and two screen doors are provided as shown in Fig. 2 etc. Note that the screen door 15 is an optional component in the present invention and may of course be omitted.

[0043] <Actions and functions of the sliding sash 1 according to the embodiment> Next, the operation and function of the sliding sash 1 of the embodiment configured as above will be described.

[0044] (Shōji screens 11 to 14 are all closed and locked) The state in which all of the shoji screens 11 to 14 are closed is the state shown in Figures 1 and 2, and they are lined up in the order of the first outer shoji screen 11, the first inner shoji screen 12, the second outer shoji screen 13, and the second inner shoji screen 14 from the left vertical frame 18 to the right vertical frame 19. In other words, unlike the prior art of Patent Documents 1 and 2 mentioned above, even when three or more shoji screens are used, they can be accommodated with two rails, namely the outer shoji screen rail 17a and the inner shoji screen rail 17b, and, unlike the prior art of Patent Documents 3 and 4 mentioned above, even when four shoji screens 11 to 14 are moved using two rails, the central first inner shoji screen 12 and the second outer shoji screen 13 do not butt up against each other.

[0045] Furthermore, when locking in this state, as shown in Figure 2, the crescent lock 12c11 on the inner joint frame 12c of the first inner shoji screen 12 locks to the crescent receiver 11d11 on the outer joint frame 11d of the first outer shoji screen 11, while the crescent lock 14c11 on the inner joint frame 14c of the second inner shoji screen 14 locks to the crescent receiver 13d11 on the outer joint frame 13d of the second outer shoji screen 13.

[0046] (When ventilating by opening the first inner shoji screen 12) To open the first inner shoji screen 12 from the state in which all the shoji screens 11 to 14 shown in Figure 2 are closed and locked, the crescent lock 12c11 on the inner joint frame 12c of the first inner shoji screen 12 is rotated to unlock it from the crescent receiver 11d11 on the outer joint frame 11d of the first outer shoji screen 11, and then the first inner shoji screen 12 is moved to the left as shown in Figure 6. This opens up the gap between the first inner shoji screen 12 and the second outer shoji screen 13, allowing ventilation of air between the inside and outside of the room as shown by arrow AF.

[0047] Here, even if one of the four shoji screens 11 to 14, the first inner shoji screen 12, is moved to ventilate, the outer shoji screens, the first outer shoji screen 11 and the second outer shoji screen 13, do not move as shown in Figure 6, and the spacing between them is almost the same as the width of the first inner shoji screen 12, unlike the conventional technologies of Patent Documents 3 and 4 mentioned above, so a single screen door 15 can be used.

[0048] Therefore, unlike the prior art of Patent Documents 3 and 4 mentioned above, which requires two screen doors to be butted together so that they rest on the central joint frames of the two outer screen doors when moving the central inner screen door of a four-panel shoji screen to ventilate, this eliminates the need to butt two screen doors together, making it easier to prevent insects and other pests from entering the room and improving indoor comfort.

[0049] (When ventilating with the two shoji screens, the first inner shoji screen 12 and the second outer shoji screen 13, open) To open the two shoji screens, the first inner shoji screen 12 and the second outer shoji screen 13, from the state in which all shoji screens 11-14 shown in Figure 2 are closed and locked, the crescent lock 12c11 on the inner joint frame 12c of the first inner shoji screen 12 is rotated to unlock it from the crescent receiver 11d11 on the outer joint frame 11d of the first outer shoji screen 11, and the first inner shoji screen 12 is moved to the left in Figure 7, and the crescent lock 14c11 on the inner joint frame 14c of the second inner shoji screen 14 is rotated to unlock it from the crescent receiver 13d11 on the outer joint frame 13d of the second outer shoji screen 13, and the second outer shoji screen 13 is moved to the right in Figure 7. Then, the first inner shoji screen 12 and the second outer shoji screen 13 can be opened for ventilation.

[0050] Furthermore, when the two first inner shoji screens 12 and the second outer shoji screen 13 are moved to ventilate, an opening equivalent to the two first inner shoji screens 12 and the second outer shoji screen 13 is created as shown in Figure 7, and the two screen doors 15, 15 are butted together to accommodate this, as in the case of the prior art in the above-mentioned Patent Documents 3 and 4.

[0051] (When adjusting the left and right of the crescent support 13d11 of the second outer shoji screen 13) In the sliding sash 1 of the embodiment, as shown in FIG. 4, the engaging portion 13c12b of the smoke return piece 13c12 of the outer central joining frame 13c of the second outer shoji 13 and the engaging portion 14c12b of the smoke return piece 14c12 of the inner joining frame 14c of the second inner shoji 14 are formed almost flush with the resin covers 13c2, 14c2 of the outer central joining frames 13c, 14c, respectively, so that when moving on the outer shoji rail 17a, Even when the outer central joint frame 13c of the second outer shoji 13 overlaps with the inner joint frame 14c of the second inner shoji 14 moving on the inner shoji rail 17b, a gap is created in the forward direction between the engaging portion 13c12b of the smoke deflector piece 13c12 of the outer central joint frame 13c of the second outer shoji 13 and the engaging portion 14c12b of the smoke deflector piece 14c12 of the inner joint frame 14c of the second inner shoji 14, so they do not interfere with each other.

[0052] Therefore, when adjusting the crescent holder 13d11 of the outer joint frame 13d of the second outer shoji screen 13, for example, as shown in Figure 8, the second outer shoji screen 13 is moved to the right in Figure 8 while the second inner shoji screen 14 is moved to the left in Figure 8, so that the outer central joint frame 13c of the second outer shoji screen 13 and the inner joint frame 14c of the second inner shoji screen 14 intersect and pass each other, exposing the crescent holder 13d11 of the outer joint frame 13d of the second outer shoji screen 13 to the inside of the room, and the position of the crescent holder 13d11 of the second outer shoji screen 13 in the left-right direction (viewing direction) can be adjusted using a tool 21 such as a screwdriver.

[0053] In the above-mentioned Patent Document 4, the outer and inner shoji screens cannot pass each other, so the crescent lock on the inner shoji screen must be removed in order to adjust the crescent receiver on the outer shoji screen, which requires time and effort to adjust the fitting to maintain watertightness, etc. In contrast, in the sliding sash 1 of this embodiment, when adjusting the crescent receiver 13d11 of the second outer shoji screen 13, the crescent receiver 13d11 can be adjusted without removing the crescent lock 14c11 of the second inner shoji screen 14, which improves the ease of adjustment and makes it easy to improve the watertightness of the sliding sash 1 with a large opening.

[0054] (When adjusting the left and right of the crescent support 11d11 of the first outer screen 11) In the sliding sash 1 of this embodiment, the smoke deflector piece 11d12 (see Figure 3, etc.) of the outer joint frame 11d of the first outer shoji screen 11 and the smoke deflector piece 12d12 (see Figure 4, etc.) of the inner central joint frame 12d of the first inner shoji screen 12 protrude forward from their respective resin covers 11d2, 12d2, and interfere with each other when they cross. Therefore, it is not possible to expose the crescent receiver 11d11 provided on the outer joint frame 11d of the first outer shoji screen 11 to the inside of the room, as can be done by adjusting the crescent receiver 13d11 left and right when the second outer shoji screen 13 and the second inner shoji screen 14 cross and pass each other, as shown in Figure 8.

[0055] For this reason, for example, by inserting one or more plate-shaped spacers 22 as shown in Fig. 9(b) into the base of the crescent lock 12c11 provided on the inner locking frame 12c of the first inner shoji screen 12, which locks and unlocks the crescent receiver 11d11 of the first outer shoji screen 11 as shown in Fig. 9(a), the amount of protrusion of the crescent lock 12c11 in the left-right direction (viewing direction) is adjusted, and the left-right adjustment of the crescent receiver 11d11 of the first outer shoji screen 11 is relatively performed. Note that in Fig. 9(a), three spacers 22 are inserted as an example.

[0056] <Summary of the sliding sash 1 according to the embodiment of the present invention> As described above, the sliding sash 1 of the embodiment of the present invention has two rails: an outer shawl rail 17a along which the first outer shawl 11 and the second outer shawl 13 move, and an inner shawl rail 17b along which the first inner shawl 12 and the second inner shawl 14 move.When the sliding sash 1 is closed, the first outer shawl 11, the first inner shawl 12, the second outer shawl 13, and the second inner shawl 14 are arranged in this order from the vertical frame 18 on the left side of the interior, which is one of the vertical frames of the sash frame, to the vertical frame 19 on the right side of the interior.

[0057] Therefore, according to the sliding sash 1 of the embodiment of the present invention, even when four shoji screens 11 to 14 are installed, it is possible to accommodate this by simply changing the length of the viewing direction by adding the outer shoji screen rail 17a and the inner shoji screen rail 17b or the upper frame 16 and the lower frame 17, without having to prepare any new rails or window frames other than the two outer shoji screen rails 17a and the inner shoji screen rail 17b that make up a normal two-panel sliding sash, thereby reducing manufacturing costs.

[0058] Furthermore, in the sliding sash 1 of the embodiment of the present invention, even when installing four shoji screens 11 to 14, two outer shoji screen rails 17a and two inner shoji screen rails 17b can be used, eliminating the need to increase the frame projection, allowing for a larger interior space to be secured and the entire sliding sash 1 to be made lighter.

[0059] Furthermore, in the sliding sash 1 of the embodiment of the present invention, by dividing it into four shoji panels 11 to 14, the weight of each shoji panel incorporating glass is reduced, which also reduces the burden on the rollers of each shoji panel 11 to 14, making it possible to install a sliding sash that can be opened and closed smoothly even in a large opening layout of 5 m or more, for example.

[0060] In particular, in the sliding sash 1 of the embodiment according to the present invention, in the sliding sash 1 in which four shoji screens 11 to 14 are installed, even when the first inner shoji screen 12 in the center of the sliding sash 1 is moved for ventilation, as shown in Figure 6, it is possible to handle this with a single screen door 15, so that it is possible to easily and reliably prevent the entry of insects and the like from outside, thereby improving the comfort inside the room.

[0061] Furthermore, in the sliding sash 1 of the embodiment according to the present invention, the first inner shoji screen 12 has an inner joint frame 12c that overlaps with the outer joint frame 11d of the first outer shoji screen 11 when the sliding sash 1 is closed, and an inner central joint frame 12d that overlaps with the outer central joint frame 13c of the second outer shoji screen 13, while the second outer shoji screen 13 has an outer joint frame 13d that overlaps with the inner joint frame 14c of the second inner shoji screen 14 when the sliding sash 1 is closed, and an outer central joint frame 13c that overlaps with the inner central joint frame 12d of the first inner shoji screen 12.

[0062] Therefore, in the sliding sash 1 of the embodiment of the present invention, of the four shoji screens 11 to 14, the first inner shoji screen 12 and the second outer shoji screen 13 in the center of the sliding sash 1 do not butt against each other, unlike the sliding sashes of Patent Documents 3 and 4 mentioned above, as the inner central joint frame 12d of the first inner shoji screen 12 and the outer central joint frame 13c of the second outer shoji screen 13 do not butt against each other. Therefore, when viewed from inside or outside the room, the inner central joint frames 12d, 13c in the center of the sliding sash 1 do not appear thick in design, and the design of the entire sliding sash 1 can be improved.

[0063] In addition, in the sliding sash 1 of the embodiment of the present invention, the outer central joint frame 13c of the second outer shoji screen 13 is provided with a smoke-reflecting piece 13c12 that opens toward the first outer shoji screen 11 side, while the inner central joint frame 12d of the first inner shoji screen 12 is provided with a smoke-reflecting piece 12d12 that opens toward the second inner shoji screen 14 side and engages with the smoke-reflecting piece 13c12 of the second outer shoji screen 13.

[0064] Therefore, the outer central joint frame 13c of the second outer shoji screen 13 and the inner central joint frame 12d of the first inner shoji screen 12 overlap, and the smoke-reflecting piece 13c12 of the outer central joint frame 13c of the second outer shoji screen 13 engages with the smoke-reflecting piece 12d12 of the inner central joint frame 12d of the first inner shoji screen 12, so that the two central shoji screens 12, 13 of the four shoji screens 11 to 14 can be securely closed, improving the performance such as wind pressure resistance of the first inner shoji screen 12 and the second outer shoji screen 13 in the center of the sliding sash 1.

[0065] Furthermore, in the sliding sash 1 of the embodiment of the present invention, the outer joint frame 13d of the second outer shoji screen 13 is provided with a smoke-reflecting piece 13d12 that opens in the same direction as the smoke-reflecting piece of the outer central joint frame 13c of the second outer shoji screen 13, while the inner joint frame 12c of the first inner shoji screen 12 is provided with a smoke-reflecting piece 12c12 that opens in the same direction as the smoke-reflecting piece 12d12 of the inner central joint frame 12d of the first inner shoji screen 12.

[0066] As a result, the second outer shoji screen 13 can be slid in the direction of the third inner shoji screen 14, and the first inner shoji screen 12 can be slid in the direction of the first outer shoji screen 11. Of the four shoji screens 11 to 14, an opening can be created between the inner central joint frame 12d of the central first inner shoji screen 12 and the outer central joint frame 13c of the second outer shoji screen 13, and the performance of the entire sliding sash 1, such as wind pressure resistance, can be improved.

[0067] Furthermore, in the sliding sash 1 of the embodiment of the present invention, the outer joint frame 11d of the first outer shoji screen 11 is provided with a crescent receiver 11d11 that locks and unlocks with a crescent lock 12c11 provided on the inner joint frame 12c of the first inner shoji screen 12, while the outer joint frame 13d of the second outer shoji screen 13 is provided with a crescent receiver 13d11 that locks and unlocks with a crescent lock 14c11 provided on the inner joint frame 14c of the second inner shoji screen 14.

[0068] Therefore, when the four shoji screens 11 to 14 are closed using a structure in which the four shoji screens 11 to 14 are moved using two rails, an outer shoji screen rail 17a and an inner shoji screen rail 17b, the four shoji screens 11 to 14 can be securely locked using the crescent locks 12c11, 14c11 and the crescent receivers 11d11, 13d11.

[0069] Furthermore, in the sliding sash 1 of the embodiment of the present invention, when the outer central joint frame 13c of the second outer shawl 13 moving on the outer shawl rail 17a and the inner joint frame 14c of the second inner shawl 14 moving on the inner shawl rail 17b overlap, a gap is created in the forward direction between the smoke deflector piece 13c12 of the outer central joint frame 13c of the second outer shawl 13 and the smoke deflector piece 14c12 of the inner joint frame 14c of the second inner shawl 14, so that they do not interfere with each other.

[0070] Therefore, when adjusting the crescent holder 13d of the outer joint frame 13d of the second outer shoji screen 13, for example, as shown in Figure 8, the second outer shoji screen 13 is moved to the right as shown in Figure 8, while the second inner shoji screen 14 is moved to the left as shown in Figure 8, allowing them to pass each other so that they intersect, exposing the crescent holder 13d of the outer joint frame 13d of the second outer shoji screen 13 to the inside of the room, and allowing the left and right adjustment of the crescent holder 13d11 of the second outer shoji screen 13 to be made using a screwdriver or the like, thereby improving work efficiency.

[0071] Furthermore, the left-right adjustment of the crescent holder 11d11 of the first outer shoji screen 11 can be performed, for example, by inserting one or more plate-shaped spacers 22 as shown in Figure 9(b) into the base of the crescent lock 12c11 of the inner joint frame 12c of the first inner shoji screen 12 as shown in Figure 9(a), thereby adjusting the amount of protrusion of the crescent lock 12c11 in the left-right direction (finding direction), and thereby relatively adjusting the position of the crescent holder 11d11 of the first outer shoji screen 11 in the left-right direction (finding direction).

[0072] <Modification> In the sliding sash 1 of the above-described embodiment, the outer central joint frame 13c of the second outer shoji screen 13 does not have a pull tab (handle), making it difficult to open from the inside of the room. Therefore, as shown in Figures 10 and 11, a door handle 13c3 may be provided near the middle of the longitudinal direction of the outer central joint frame 13c on the inside of the room of the second outer shoji screen 13, so that its height (thickness) in the forward direction does not exceed the indoor side of the resin cover 13c2 or the engaging portion 13c12b of the smoke deflector piece 13c12, and it protrudes toward the outer joint frame 13d without interfering with the crescent lock 14c11 of the second inner shoji screen 14.

[0073] By providing the handle 13c3 described above on the indoor side of the outer central joining frame 13c of the second outer shoji screen 13, the user can unlock the crescent lock 14c11 provided on the inner joining frame 14c of the second inner shoji screen 14 from the crescent receiver 13d11 provided on the outer joining frame 13d of the second outer shoji screen 13, and then grasp the handle 13c3 of the outer central joining frame 13c of the second outer shoji screen 13 from the indoor side and easily move the second outer shoji screen 13 to the right as shown in Figure 12. Therefore, it becomes possible to grasp the handle 13c3 from the indoor side and easily move the second outer shoji screen 13 to ventilate the room, improving convenience. Furthermore, the handle 13c3 provided on the outer central joint frame 13c of the second outer shoji screen 13 does not interfere with the crescent lock 14c11 of the second inner shoji screen 14, so as shown in Figure 8, the second outer shoji screen 13 can be crossed with the second inner shoji screen 14 to expose the crescent holder 13d11 of the outer joint frame 13d of the second outer shoji screen 13 to the inside of the room, and the position of the crescent holder 13d11 of the second outer shoji screen 13 in the left-right direction (viewing direction) can be adjusted using a tool 21 such as a screwdriver.

[0074] Furthermore, the first inner shoji 12 and the second inner shoji 14, which are the shoji on the inside of the room, can be easily moved on the inner shoji rail 17b by grabbing the inner joint frame 12c, the inner central joint frame 12d, or the inner joint frame 14c, etc., which protrude into the room, and in Figure 12, the first inner shoji 12 is moved to the left in the figure.

[0075] Furthermore, in the explanation of the above embodiment, an aluminum-resin composite sash was used as an example in which the upper frame 16, lower frame 17, vertical frames 18, 19 of the sliding sash 1, and the upper frames 11a-14a, lower frames 11b-14b, and vertical frames 11c-14c, 11d-14d of the four shoji screens 11-14 are made of metal members such as aluminum and a resin cover, but the present invention is not limited to this and may of course also be applied to aluminum sashes that do not use resin covers. [Explanation of symbols]

[0076] 1. Sliding sash 11 First outer shoji screen 11a Upper stile 11b Lower stile 11c Door frame 11c1 Metallic parts 11c2 Resin cover 11c3 Pull handle 11d Outer joint frame 11d1 Metallic parts 11d11 Crescent Receipt 11d12 Smoke deflector 11d12a Standing part 11d12b Engagement part 11d2 Resin cover 11e Shoji Glass 12 First inner shoji screen 12a Upper stile 12b Lower stile 12c Inner joint frame 12c1 Metallic parts 12c11 Crescent Tablets 12c12 Smoke deflector 12c12a Standing part 12c12b Engagement part 12c2 Resin cover 12d Inner central stile 12d1 Metallic parts 12d12 smoke deflector 12d12a Standing part 12d12b Engagement part 12d2 resin cover 13 Second outer shoji screen 13a Upper stile 13b Lower stile 13c Outer central stile 13c1 Metallic parts 13c12 Smoke deflector 13c12a Standing part 13c12b Engagement part 13c2 Resin cover 13c3 Handle 13d Outer joint frame 13d1 Metallic parts 13d2 Resin cover 13d11 Crescent Receiver 13d12 Smoke deflector 13d12a Erect part 13d12b Engagement part 13e Shoji Glass 14 Second inner shoji screen 14a Upper stile 14b Lower stile 14c Inner stile 14c1 Metallic parts 14c11 Crescent Tablets 14c12 Smoke deflector 14c12a Standing part 14c12b Engagement part 14c2 Resin cover 14d Door frame 14d1 Metallic parts 14d2 Resin cover 14d3 Pull handle 14e Shoji glass 15 Screen door 15a Upper stile 15b Lower stile 15c,15d Stiles 15e Amibe 16 Upper frame 17 Bottom frame 17a Rail for outer shoji screen 17b Inner shoji screen rail 17c Screen door rail 18,19 Vertical frame 21 Tools 22 spacer

Claims

1. A sliding sash having two rails: an outer shawl rail along which the first outer shawl and the second outer shawl move, and an inner shawl rail along which the first inner shawl and the second inner shawl move, A sliding sash characterized in that when the sliding sash is closed, the first outer shoji screen, the first inner shoji screen, the second outer shoji screen, and the second inner shoji screen are arranged on the outer rail or the inner shoji rail in the order from one vertical frame of the sash frame to the other vertical frame, or vice versa.

2. The sliding sash according to claim 1, A sliding sash characterized in that the first inner shoji screen has an inner joint frame that overlaps with the outer joint frame of the first outer shoji screen when the sliding sash is closed, and an inner central joint frame that overlaps with the outer central joint frame of the second outer shoji screen, while the second outer shoji screen has an outer joint frame that overlaps with the inner joint frame of the second inner shoji screen when the sliding sash is closed, and an outer central joint frame that overlaps with the inner central joint frame of the first inner shoji screen.

3. The sliding sash according to claim 2, The outer central joint frame of the second outer screen is provided with a smoke deflector opening toward the first outer screen, A sliding sash characterized in that the inner central joint frame of the first inner shoji screen is provided with a smoke deflector piece that opens toward the second inner shoji screen and engages with the smoke deflector piece of the second outer shoji screen.

4. The sliding sash according to claim 3, moreover, The outer joint frame of the second outer screen is provided with a smoke deflector that opens in the same direction as the smoke deflector of the outer central joint frame of the second outer screen, A sliding sash characterized in that the inner joint frame of the first inner shoji screen is provided with a smoke deflector piece that opens in the same direction as the smoke deflector piece of the inner central joint frame of the first inner shoji screen.

5. The sliding sash according to claim 3, A sliding sash characterized in that when the outer central joint frame of the second outer shawl, which moves on the outer shawl rail, and the inner joint frame of the second inner shawl, which moves on the inner shawl rail, overlap, a gap is created in the forward direction between the smoke deflector piece of the outer central joint frame of the second outer shawl and the smoke deflector piece of the inner joint frame of the second inner shawl, so that they do not interfere with each other.

6. The sliding sash according to claim 1, The outer frame of the first outer door is provided with a crescent receiver for locking and unlocking the crescent lock provided on the inner frame of the first inner door; A sliding sash characterized in that the outer joint frame of the second outer screen is provided with a crescent receiver that locks and unlocks the crescent lock provided on the inner joint frame of the second inner screen.

7. The sliding sash according to claim 5, A sliding sash characterized in that a handle is provided on the outer central joint frame of the second outer shoji screen.

Images