JP7780931B2 - Building materials - Google Patents

Description

This disclosure relates to building materials.

Conventionally, there is known a fitting in which the upper and lower parts of a shoji screen are stored and supported in a Kendon-style manner in rail grooves in the upper and lower frames, and the screen is not supported by the left and right vertical frames (see, for example, Patent Document 1). In this fitting, a stopper member that protrudes into the rail groove of the lower frame is attached to the fixed part of the handle on the lower rail of the shoji screen to prevent the screen from coming off the lower frame when it is lifted upward due to vertical shaking caused by an earthquake.

Japanese Patent Application Laid-Open No. 2018-184709

The inventor further investigated other reasons why a shoji screen may become detached from its frame, other than when it becomes detached from its lower frame due to vertical shaking caused by an earthquake. As a result, he discovered that if the lower frame is bent due to poor construction of the frame, the shoji screen may move downward, releasing the engagement between the shoji screen and the upper frame, causing the shoji screen to become detached from the frame.

Furthermore, direct sunlight shining on fittings from outside the room generally penetrates primarily around the lower parts of the fittings, which can cause thermal deformation and shrinkage of the lower rails of shoji screens. Furthermore, when the heat of direct sunlight softens the lower rails, the weight of the glass and other surface materials contained within the shoji screen can cause the lower rails to bend, deforming the screen and reducing its vertical dimension. When the vertical dimension of the shoji screen decreases, the position of the upper rail of the shoji screen drops, changing the engagement between the screen and the frame, which can cause the screen to wobble or come off the frame.

The inventor therefore discovered the problem of how to prevent the shoji screen from coming off the frame by maintaining the engagement between the shoji screen and the upper frame even if the screen screen moves downward or the upper sash of the screen screen drops.

The fittings disclosed herein comprise a frame body having an upper frame, a lower frame, and left and right vertical frames, with grooves in each of the upper and lower frames; a shoji screen having a facing on the inside of the frame body, which has upper slats, lower slats, and left and right vertical stiles, and which is held in the upper and lower frames by having its upper and lower ends inserted into the grooves, respectively; and an upper anti-detachment member that protrudes upward from the upper end surface of the shoji screen and prevents the shoji screen from coming off the upper frame; the upper anti-detachment member is compressed and deformed when the upper end of the shoji screen is pressed against the inner bottom surface of the groove in the upper frame, and is capable of returning to its original state when the pressing force is released.

This is a front view of the building fixture seen from inside the room. FIG. 2 is a longitudinal cross-sectional view taken along line AA in FIG. FIG. 2 is a cross-sectional view taken along line BB in FIG. 1. This is an enlarged perspective view showing the lower part of the interior side of the building material. FIG. 2 is an enlarged perspective view of the upper end of the shoji screen. This is a vertical cross-sectional view showing how a shoji screen is attached to a frame of a building fixture. 10A and 10B are diagrams showing the state in which the upper anti-detachment member is pressed and deformed. 10A and 10B are diagrams showing the steady state of the upper anti-detachment member after the pressing force is released. FIG. 2 is an enlarged perspective view of the upper end of the shoji screen. FIG. 10 is an enlarged vertical cross-sectional view showing how the shoji screen shown in FIG. 9 is attached to the upper frame. FIG. 10 is an enlarged vertical cross-sectional view showing the state in which the shoji screen shown in FIG. 9 has been completely attached to the frame body. FIG. 2 is an enlarged perspective view of the upper end of the shoji screen. FIG. 2 is an enlarged perspective view of the upper end of the shoji screen. FIG. 14 is an enlarged perspective view showing the upper anti-detachment member of the shoji screen shown in FIG. 13. FIG. 2 is an enlarged perspective view of the upper end of the shoji screen. FIG. 16 is an enlarged vertical cross-sectional view showing the upper part of the fitting having the shoji screen shown in FIG. 15. FIG. 17 is a vertical cross-sectional view of the upper anti-detachment member shown in FIG. 16 . FIG. 18 is a longitudinal cross-sectional view taken along line CC in FIG. 17. This is an enlarged vertical cross-sectional view showing the upper part of a fitting having a shoji screen.

Each embodiment of the fixture of the present disclosure will be described in detail below with reference to the drawings. The fixture in the embodiments is a fixed window 1. The fixed window 1 is a so-called fixed window, and is attached to the inside of a frame 101 that is provided along the inner periphery of a rectangular opening 100 in the building frame. The fixed window 1 does not open or close the opening 100 except when the shoji screen 3 is removed for cleaning, etc.

Figure 1 is a front view of the fixed window 1 as seen from the indoor side. In the figures shown below, the X1 direction indicates the outdoor side of the fixed window 1, and the X2 direction indicates the indoor side of the fixed window 1. Another window (not shown), such as a fixed window or sliding window, may be attached inside the frame 101 on the outdoor side of the fixed window 1. This creates a double-glazed window inside the frame 101, further improving thermal insulation and soundproofing. The fixed window 1 of this embodiment can be retrofitted to the indoor side of an existing window (not shown).

The fixed window 1 comprises a frame 2 mounted inside the frame 101, a shoji screen 3 housed inside the frame 2, a lower retaining member 4, and an upper retaining member 5. The frame 2 is formed by framing an upper frame 21, a lower frame 22, and left and right vertical frames 23, 23 in a rectangular shape. The shoji screen 3 is removably fitted inside the frame 2. The lower retaining member 4 and upper retaining member 5 are both members that prevent the shoji screen 3 from coming off the frame 2.

The upper frame 21 of the frame body 2 is integrally extruded from a resin material. The upper frame 21 has a first hollow section 211 with a rectangular cross-section and a hollow structure located on the outdoor side, a second hollow section 212 with a rectangular cross-section and a hollow structure located on the indoor side, and a flat base section 213 that connects the upper ends of the first hollow section 211 and the second hollow section 212. The first hollow section 211, the second hollow section 212, and the base section 213 extend over the entire length of the upper frame 21 in the extension direction. The first hollow section 211 and the second hollow section 212 protrude downward from the base section 213 at the same height.

The first hollow portion 211 and the second hollow portion 212 are arranged parallel to each other and spaced apart in the indoor/outdoor direction. As a result, a groove portion 214 is formed between the first hollow portion 211, the second hollow portion 212, and the base portion 213, spanning the entire length of the upper frame 21 in the extension direction. The groove portion 214 is open downward and accommodates the upper end of the shoji screen 3. The base portion 213 forms the inner bottom surface of the groove portion 214.

The lower end of the first hollow portion 211 is provided with a sealing portion 215 that protrudes toward the inside of the room and elastically contacts the outside surface of the shoji screen 3. The lower end of the second hollow portion 212 is provided with a fin portion 216 that protrudes toward the outside of the room and elastically contacts the inside surface of the shoji screen 3. The upper frame 21 is fixed to the upper inner surface of the frame 101 with screws (not shown) that pass through the base portion 213.

The lower frame 22 of the frame body 2 is integrally extruded from a resin material. The lower frame 22 has a first hollow portion 221 with a rectangular cross-section and a hollow structure located on the outdoor side, a second hollow portion 222 with a rectangular cross-section and a hollow structure located on the indoor side, and a flat base portion 223 that connects the lower ends of the first hollow portion 221 and the second hollow portion 222. The first hollow portion 221, the second hollow portion 222, and the base portion 223 extend over the entire length of the extension direction of the lower frame 22. In this embodiment, the first hollow portion 221 and the second hollow portion 222 protrude upward from the base portion 223 at the same height, but they do not necessarily have to protrude at the same height.

The first hollow portion 221 and the second hollow portion 222 are arranged parallel to each other and spaced apart in the indoor/outdoor direction. As a result, a groove 224 is formed between the first hollow portion 221, the second hollow portion 222, and the base portion 223, spanning the entire length of the lower frame 22 in the extension direction, similar to the upper frame 21. The groove 224 opens upward and accommodates the lower end of the shoji screen 3. The base portion 223 forms the inner bottom surface of the groove 224.

A sealing portion 225 is integrally formed at the upper end of the first hollow portion 221, protruding toward the inside of the room and elastically contacting the outside surface of the shoji screen 3. A fin portion 226 is integrally formed at the upper end of the second hollow portion 222, protruding toward the outside of the room and elastically contacting the inside surface of the shoji screen 3. The lower frame 22 is fixed to the lower inner surface of the frame 101 with screws (not shown) that pass through the base portion 223.

As shown in Figure 2, multiple resin liners 227 that support the lower end of the shoji screen 3 are provided at predetermined intervals inside the groove 224 of the lower frame 22. The liners 227 are formed in a block shape and have a height slightly lower than the height of the first hollow portion 221 and the second hollow portion 222 of the lower frame 22. Therefore, the lower end surface of the shoji screen 3 housed in the groove 224 of the lower frame 22 is placed on the upper surface of the liners 227, and is positioned slightly lower than the upper end surfaces of the first hollow portion 221 and the second hollow portion 222 of the lower frame 22.

The vertical frames 23, 23 of the frame body 2 are each extruded integrally from resin material in a generally L-shape. The vertical frames 23, 23 extend vertically between the upper frame 21 and the lower frame 22. The vertical frames 23, 23 have base portions 231, 231 extending a predetermined width along the vertical direction of the frame 101, exterior wall portions 232, 232 extending at a generally right angle from the exterior ends of the base portions 231, 231 toward the inside of the frame 101, and abutment pieces 233, 233 extending at a generally right angle from the inner ends of the exterior wall portions 232, 232 toward the interior side of the frame.

The abutment pieces 233, 233 are narrower than the base pieces 231, 241 so that they come into contact with the exterior surface of the shoji screen 3. Sealing parts 234, 234 that resiliently come into contact with the exterior surface of the shoji screen 3 are integrally formed at the tips of the abutment pieces 233, 233. The vertical frames 23, 23 are fixed to the inner surfaces of the left and right sides of the frame 101 with screws (not shown) that pass through the base pieces 231, 231.

The shoji screen 3 is constructed by fitting a surface material 34 such as glass through a glazing channel 341 inside a rectangular frame body 30 made up of an upper frame 31, a lower frame 32, and left and right vertical frames 33, 33. The surface material may be double-glazed glass made up of two panes of glass. In the case of double-glazed glass, it is held in place by a retaining member made of soft PVC attached to the frame body.

As shown in Figure 2, the upper and lower crosspieces 31 and 32 are each composed of a metal core 311, 321, resin cover materials 312, 322 that cover the exterior and interior sides of the core, and resin upper and lower cover materials 313 and 323 that are attached to the upper and lower end surfaces of the resin cover materials 312, 322. As shown in Figures 3 and 5, the vertical stiles 33, 33 are each composed of a metal core 331, 331, resin cover materials 332, 332 that cover the exterior, and end cover materials 333, 333 that cover the upper and lower end surfaces of the vertical stiles 33, 33, respectively.

As shown in Figure 1, the shoji screen 3 has a vertically-hung structure in which an upper sash 31 and a lower sash 32 are arranged between left and right vertical frames 33. Specifically, the left and right vertical frames 33 extend the entire length of the shoji screen 3 in the vertical direction. The upper sash 31 and the lower sash 32 are arranged between the left and right vertical frames 33, 33, connecting the upper ends and lower ends of the vertical frames 33, 33, respectively. End cover materials 333 on the upper and lower end faces of the vertical frames 33, 33 are arranged flush with the upper end cover material 313 of the upper sash 31 and the lower end cover material 323 of the lower sash 32, respectively. A roughly U-shaped handle 35 is attached to the center of the interior-facing surface of the lower sash 32.

The lower retaining member 4 is the same as the conventional member, and as shown in Figures 1, 2, and 4, is positioned between one of the pair of bases 351, 351 of the handle 35 and the interior-facing surface 32a of the lower rail 32 of the shoji screen 3.

As shown in FIG. 4, the lower retaining member 4 has a retaining portion 41, which is a vertically elongated rectangular metal or resin case; a locking tongue 42 made of a metal plate housed inside the retaining portion 41; and a vertically elongated hole 43 that penetrates from the retaining portion 41 to the locking tongue 42. The locking tongue 42 is formed as an elongated plate that is vertically longer than the retaining portion 41. Approximately the upper half of the locking tongue 42 is inserted into the retaining portion 41. Approximately the lower half of the locking tongue 42 protrudes from the retaining portion 41 into the groove 224 of the lower frame 22. Because the upper end surface 41a of the retaining portion 41 is closed, the locking tongue 42 within the retaining portion 41 cannot move upward. The corners of the locking tongue 42 protruding from the retaining portion 41 are rounded.

The lower anti-detachment member 4 is attached to the interior-facing surface 32a of the lower rail 32 with a fixing screw 44. Specifically, the lower anti-detachment member 4 is positioned between the interior-facing surface 32a of the lower rail 32 of the shoji screen 3 before it is attached to the frame 2 and the base 351 of the handle 35. The lower anti-detachment member 4 is temporarily fixed by loosely fitting the fixing screw 44 that attaches the base 351 into the screw insertion hole of the base 351. At this time, the lower anti-detachment member 4 has been moved upward so that the shank 431 (see Figure 2) of the fixing screw 44 is positioned at the lower end of the elongated hole 43 so as not to interfere with the insertion of the lower end of the shoji screen 3 into the groove 224 of the lower frame 22. Therefore, the lower anti-detachment member 4 is temporarily fixed in a position higher than its final installation position.

As described below, after the shoji screen 3 is fitted into the frame 2 using the Kendon method, the lower anti-detachment member 4 is slid downward along the elongated hole 43. As a result, the locking tongue 42 is inserted into the groove 224 of the lower frame 22 through the gap between the second hollow portion 222 of the lower frame 22 and the lower rail 32 of the shoji screen 3, as shown in Figure 2. The locking tongue 42 in the groove 224 protrudes downward beyond the lower end cover material 323 of the lower rail 32 of the shoji screen 3, and is positioned between the liner 227 and the second hollow portion 222 of the lower frame 22. The lower end 42a of the locking tongue 42 is close to the base portion 223 of the lower frame 22. The fixing screw 44 is then tightened, and the lower anti-detachment member 4 is sandwiched between the lower rail 32 and the base 351 of the handle 35, and fixed to the lower rail 32. Because the shaft 431 of the fixing screw 44 is positioned at the upper end of the elongated hole 43, the locking tongue 42 inside the retaining portion 41 does not move downward.

By attaching the lower retaining member 4 to the lower rail 32 of the shoji screen 3, the locking tongue 42 remains engaged with the groove 224 of the lower frame 22, even if the shoji screen 3 moves upward due to vertical shaking caused by an earthquake. This prevents the lower end of the shoji screen 3 from coming off the lower frame 22.

Next, the upper anti-detachment member 5 will be described with reference to Figures 1, 2, and 5. The upper anti-detachment member 5 is attached to the upper surface 313a of the upper end cover material 313 of the upper rail 31 of the shoji screen 3. The upper surface 313a of the upper end cover material 313 is the upper end surface of the shoji screen 3. The upper anti-detachment member 5 protrudes upward from the upper surface 313a of the upper end cover material 313 toward the base portion 213 in the groove portion 214 of the upper frame 21. Two upper anti-detachment members 5 are provided at the upper end of the shoji screen 3, spaced apart in the left-right direction, but the number of upper anti-detachment members 5 can be increased or decreased as appropriate depending on the size of the shoji screen 3.

When the upper anti-slip member 5 is in a steady state and not pressed, it protrudes a predetermined height from the upper surface 313a of the upper end cover material 313 of the shoji screen 3. As described below, when the upper end of the shoji screen 3 is inserted into the groove 214 of the upper frame 21 using the Kendon method and pressed against the base plate 213, which is the inner bottom surface of the groove 214, the upper anti-slip member 5 is compressed and deformed, and can return to its original state when the pressure is released.

The upper anti-detachment member 5 has a pair of plate-shaped members 51, 51 arranged in a roughly V-shape when viewed from the inside and outside of the room, and a fixing portion 52 arranged between the pair of plate-shaped members 51, 51. The upper anti-detachment member 5 is fixed at the fixing portion 52 to the upper surface 313a of the upper end cover material 313 with fixing members 52a such as screws or rivets. The plate-shaped member 51 is compressed and easily elastically deformed when pressed against the base plate portion 213, and is able to return to its original steady state when the pressure is released. The plate-shaped member 51 makes it easy to construct the compressible and reversible upper anti-detachment member 5 on the shoji screen 3. The plate-shaped member 51 may be a metal plate or a resin plate.

A pair of plate-like members 51, 51 are formed integrally with the fixed portion 52 so as to protrude diagonally upward from the fixed portion 52 to both sides of the length of the upper crosspiece 31. The length direction of the upper crosspiece 31 corresponds to the width direction of the shoji screen 3 shown in Figure 1. The tip portions 51a, 51a of each plate-like member 51, 51 are smoothly curved slightly downward.

Next, we will explain how to insert the shoji screen 3 into the frame 2 using the Kendon method. As shown in Figure 6, the shoji screen 3 is inserted into the groove 214 of the upper frame 21 and the groove 224 of the lower frame 22 using the Kendon method from the inside of the room. That is, first, with the upper end of the shoji screen 3 tilted toward the outside of the room, the upper end of the shoji screen 3 is inserted deep into the groove 214 of the upper frame 21. When the shoji screen 3 is inserted deep into the groove 214, as shown in Figure 7, the tip ends 51a, 51a of the pair of plate-like members 51, 51 abut against the base plate 213, which is the inner bottom surface of the groove 214. Because the tip ends 51a, 51a are smoothly curved downward, damage to the base plate 213 is reduced.

When the upper end of the shoji screen 3 is pressed further toward the base plate 213, the upper anti-detachment member 5 is compressed, elastically deforming so that the plate-like members 51, 51 open outward. This reduces the height of the upper anti-detachment member 5. Therefore, there is no risk that the upper anti-detachment member 5 will interfere with the insertion of the shoji screen 3 into the groove 214, and the shoji screen 3 can be inserted deep into the groove 214.

After inserting the shoji screen 3, the lower end of the shoji screen 3 is moved toward the outside of the room and aligned with the groove 224 of the lower frame 22. The shoji screen 3 is then lowered and the lower end of the shoji screen 3 is inserted into the groove 224 of the lower frame 22. As a result, the upper and lower ends of the shoji screen 3 are accommodated in the grooves 214 and 224, respectively, and the shoji screen 3 is fitted and held in place between the upper and lower frames 21 and 22. The vertical frames 23 abut the sealing portions 234 against the vertical stiles 33 of the shoji screen 3 from the outside of the room, thereby restricting the position of the shoji screen 3 on the outside. The vertical frames 23 only abut the sealing portions 234 against the outside surface of the shoji screen 3 and do not hold the shoji screen 3 in place. The sealing portion 215 and fin portion 216 of the upper frame 21 abut against the upper end of the shoji screen 3 from the outside and inside of the room, respectively, ensuring airtightness, preventing the upper end of the shoji screen 3 from rattling, and blocking the intrusion of debris and other foreign matter from outside. The sealing portion 225 and fin portion 226 of the lower frame 22 abut against the lower end of the shoji screen 3 from the outside and inside of the room, respectively, ensuring airtightness, preventing the lower end of the shoji screen 3 from rattling, and blocking the intrusion of debris and other foreign matter from outside.

When the shoji screen 3 is attached to the frame 2, the pressure against the upper anti-detachment member 5 is released. As shown in Figure 8, the released upper anti-detachment member 5 returns to its original, steady state and protrudes a predetermined height from the upper surface 313a of the upper end cover material 313 within the groove 214. The upward-protruding upper anti-detachment member 5 in the steady state increases the engagement of the upper end of the shoji screen 3 with the upper frame 21. Therefore, even if the shoji screen 3 moves downward or the position of the upper crosspiece 31 of the shoji screen 3 drops, the engagement between the groove 214 and the shoji screen 3 is maintained, preventing the shoji screen 3 from coming off the frame 2. Because the plate-shaped member 51 protrudes diagonally upward along the length of the upper crosspiece 31, the plate-shaped member 51 can support the load across its width when the upper end of the shoji screen 3 moves in a direction that disengages it toward the interior of the room. This effectively prevents the upper end of the shoji screen 3 from coming off the upper frame 21.

In the steady state, the tip portions 51a, 51a of the upper anti-detachment member 5 are in contact with the base portion 213 inside the groove portion 214, but they do not necessarily have to be in contact with the base portion 213.

The inclination direction of the plate-shaped member 51 of the upper anti-detachment member 5 may be arranged in the indoor/outdoor direction, as shown in Figure 9. The plate-shaped member 51 of the upper anti-detachment member 5 shown in Figure 9 protrudes diagonally upward from the outdoor side toward the indoor side on the upper surface 313a of the upper end cover material 313. The plate-shaped member 51 has a through-hole 51b through which the fixing member 52a is inserted.

In the case of this upper anti-detachment member 5, as shown in Figure 10, when the upper end of the shoji screen 3 is pressed against the base plate portion 213, the plate-shaped member 51 elastically deforms to overlap the fixed portion 52, reducing its height dimension. When the pressure on the upper anti-detachment member 5 is released, as shown in Figure 11, the upper anti-detachment member 5 returns to its original, steady state, protruding a predetermined height from the upper surface 313a of the upper end cover material 313 within the groove portion 214. This achieves the same effect as described above.

The plate-shaped member 51 of this upper anti-detachment member 5 protrudes diagonally upward from the outside toward the inside of the room, so the direction in which the shoji screen 3 is pushed toward the groove 214 coincides with the direction in which the plate-shaped member 51 falls. This allows the upper anti-detachment member 5 to deform smoothly when the upper end of the shoji screen 3 is pushed into the groove 214. Because the tip 51a of the plate-shaped member 51 with the highest protrusion height is positioned on the inside of the room, a large vertical distance can be secured to maintain engagement between the shoji screen 3 and the upper frame 21.

The plate-shaped member 51 of the upper anti-detachment member 5 may protrude in a mountain-like shape from the upper surface 313a of the upper end cover material 313 of the shoji screen 3 along the length of the upper rail 31. As shown in Figure 12, the plate-shaped member 51 of the upper anti-detachment member 5 protrudes diagonally upward from the fixed portion 52 toward one side of the length of the upper rail 31, and then extends diagonally downward toward the tip 51a. The tip 51a side is a free end that is not fixed. The mountain-shaped plate-shaped member 51 may be formed with a smoothly continuous curved surface along the length of the upper rail 31.

When pressed, the upper anti-detachment member 5, which protrudes in a mountain-like shape, elastically deforms as its tip 51a moves along the length of the upper crosspiece 31, relative to the fixed portion 52, thereby reducing its height. When the pressure on the upper anti-detachment member 5 is released, the upper anti-detachment member 5 returns to its original, steady state and protrudes a predetermined height from the upper surface 313a of the upper end cover material 313 within the groove 214. This achieves the same effect as above. When pressed, the mountain-shaped plate member 51 elastically deforms as it moves along the length of the upper crosspiece 31, so it is easily compressed by being pressed. This means that the upper end of the shoji screen 3 can be easily inserted into the groove 214 with little pressing force.

The upper anti-detachment member 5 is not limited to being attached to the upper rail 31 of the shoji screen 3. As shown in FIG. 13, the upper anti-detachment member 5 may also be attached to the upper end of the vertical frame 33. The upper anti-detachment member 5 shown in FIG. 13 is composed of a resin end cover material 333 on the upper end side of the vertical frame 33 of the shoji screen 3. The end cover material 333 is a member that connects the vertical frame 33 and the upper rail 31. The upper anti-detachment member 5 composed of the end cover material 333 is attached to the upper end surface of the vertical frame 33 by means of the mounting legs 333b. This upper anti-detachment member 5 may also be attached to the upper end surfaces of the left and right vertical frames 33, 33 of the shoji screen 3, respectively.

The plate-shaped member 51 of the upper anti-detachment member 5 is made of resin and is formed integrally with the upper surface 333a of the end cover material 333. The upper surface 333a of the end cover material 333 is the upper end surface of the shoji screen 3. The plate-shaped member 51 protrudes diagonally upward from the outer longitudinal edge of the upper rail 31 on the upper surface 333a of the end cover material 333, toward the inside of the upper rail 31. The same effect as above can be achieved when an upper anti-detachment member 5 is provided at the upper end of the stile 33. Because this upper anti-detachment member 5 is formed integrally with the end cover material 333 of the stile 33, it is low cost, and the upper anti-detachment member 5 can be easily provided on the shoji screen 3 by simply attaching the end cover material 333 to the stile 33.

The inclination direction of the plate-like member 51 formed integrally with the upper surface 333a of the end cover material 333 may be such that it protrudes diagonally upward from the inside of the upper rail 31 outward in the longitudinal direction, or such that it protrudes diagonally upward from the outer edge of the upper surface 333a toward the inside of the room.

Figures 15 to 18 show an upper anti-removal member 6 that differs from the above-described upper anti-removal member 5, which has a plate-shaped member 51. This upper anti-removal member 6 has a movable member 61, a base member 62 that attaches the movable member 61 to the upper surface 313a of the upper end cover material 313, and a plurality of springs 63 that elastically support the movable member 61 within the base member 62.

The movable member 61 has a T-shaped cross section and includes an upper plate 611 that extends along the length of the upper crosspiece 31 and is parallel to the upper surface 313a of the upper end cover material 313, and legs 612 that protrude downward from the center of the upper plate 611 in the indoor/outdoor direction. The legs 612 are provided along the entire length of the upper plate 611. The lower ends of the legs 612 have locking portions 613, 613 that protrude toward the outside and inside of the room, respectively. The lower end surfaces of the legs 612 have multiple spring mounting holes 614 spaced apart along the length. The movable member 61 may be made of metal or resin.

The base member 62 is disposed inside the upper crosspiece 31 along the length of the upper crosspiece 31 and is formed in the shape of a container with an opening 621 that opens toward the upper surface 313a of the upper end cover material 313. A pair of parallel support walls 622, 622 extending upward along the length of the base member 62 are provided on the upper surface of the base member 62. The opening 621 is formed between the pair of support walls 622, 622.

The distance between the pair of support walls 622, 622 is equal to or greater than the width of the legs 612 of the movable member 61 in the indoor/outdoor direction, but is smaller than the width of the locking portions 613, 613 at the lower ends of the legs 612 in the indoor/outdoor direction, and is also smaller than the width of the base member 62 in the indoor/outdoor direction. Therefore, steps 623, 623 are formed between the base member 62 and the opening 621 inside the base member 62.

The base member 62 accommodates the legs 612 of the movable member 61, sandwiched between a pair of support walls 622, 622, allowing them to move up and down. The pair of support walls 622, 622 smoothly support the vertical movement of the movable member 61. When the movable member 61 moves upward, the locking portions 613 at the lower ends of the legs 612 abut and lock against steps 623, 623 inside the base member 62. This restricts the upward position of the movable member 61.

The springs 63 are attached within each spring attachment hole 614. The lower ends of the springs 63 rest on the bottom surface 62a within the base member 62. When the springs 63 are in a steady state without being compressed, the movable member 61 protrudes furthest above the upper surface 313a of the upper end cover material 313 of the shoji screen 3, separating the upper panel 611 from the upper surface 313a of the upper end cover material 313. The springs 63 are not limited to coil springs, and may be leaf springs or the like.

When this upper anti-detachment member 6 is pressed, the spring 63 is compressed, causing the movable member 61 to move downward toward the base member 62. In other words, the movable member 61 deforms so that its protruding height decreases. When the pressure on the upper anti-detachment member 6 is released, the spring 63 expands, causing the movable member 61 to return to its normal state in which it protrudes furthest above the upper surface 313a of the upper end cover material 313. With the upper anti-detachment member 6 returned to its normal state, the upper end of the shoji screen 3 is more firmly attached to the upper frame 21, so even if the shoji screen 3 drops downward, there is no risk of the shoji screen 3 coming off the upper frame 21. Because the movable member 61 itself does not deform, it is highly effective in preventing the upper end of the shoji screen 3 from coming off the upper frame 21.

Figure 19 also shows an upper anti-removal member 7, which differs from the above-mentioned upper anti-removal member 5, which has a plate-shaped member 51. This upper anti-removal member 7 has a cylindrical member 71 made of resin that can be elastically deformed when compressed. The cylindrical member 71 protrudes upward from the top surface of the shoji screen 3.

The tubular member 71 is made of a resin material such as nylon and is formed into a cylindrical shape with both ends open in the longitudinal direction. The underside of the tubular member 71 is provided with a pair of engaging legs 72, 72 that are inserted into and engage with mounting holes 312b formed on the upper surface 312a of the resin cover material 312 of the upper rail 31 of the shoji screen 3. By attaching the tubular member 71 to the upper surface 312a of the resin cover material 312, it also serves as the upper end cover material for the upper rail 31.

The tubular member 71 has an outer shell 711 that is rectangular when viewed longitudinally, and a single wall 712 that vertically divides the interior of the outer shell 711. Because the tubular member 71 is hollow, when pressed against the shoji screen 3 when it is inserted into the groove 214 using the Kendon method, it is compressed and easily deforms elastically, and when the pressure is released, it easily returns to its normal state. The upper end of the shoji screen 3 is more firmly attached to the upper frame 21 by the tubular member 71 that has returned to its normal state, so even if the shoji screen 3 drops downward, there is no risk of the shoji screen 3 coming off the upper frame 21. Because the tubular member 71 can be extruded longitudinally, a low-cost upper anti-detachment member 7 can be easily formed.

The upper anti-slip member 7 may be attached to the upper surface 312a of the resin cover material 312 of the upper rail 31 using fixing members such as screws or rivets. The upper anti-slip member 7 may be glued to the upper surface 312a of the resin cover material 312 of the upper rail 31. The upper anti-slip member 7 may be provided along the entire length of the upper rail 31, or multiple short members may be provided at intervals along the length of the upper rail 31. The cross-sectional shape of the outer shell portion 711 is not limited to rectangular, but may also be circular, semicircular, etc. The outer shell portion 711 may not have any internal wall portions 712, or two or more may be provided. The upper anti-slip member 7 may be provided on the upper end surface of the vertical frame 33. The tubular member 71 may be provided on the upper end surface of the shoji screen 3 so that the openings at both ends face the interior and exterior directions.

The fixed window 1, which is a fixture shown in the above embodiment, has the following effects. Specifically, the fixed window 1 comprises a frame body 2 having an upper frame 21, a lower frame 22, and left and right vertical frames 23, 23, with grooves 214, 224 in the upper frame 21 and lower frame 22, respectively; a shoji screen 3 having an upper sash 31, a lower sash 32, and left and right vertical stiles 33, 33, with a face plate 34 on the inside of the frame body 30, and whose upper and lower ends are inserted into the grooves 214, 224, respectively, to be held in place by the upper frame 21 and lower frame 22; and upper stopper members 5, 6, 7 that protrude upward from the upper end surface of the shoji screen 3 and prevent the shoji screen 3 from coming off the upper frame 21. The upper anti-slip members 5, 6, and 7 are compressed and deformed when the upper end of the shoji screen 3 is pressed against the base plate 213, which is the inner bottom surface of the groove 214 of the upper frame 21, and can return to their original state when the pressure is released. As a result, the upper anti-slip members 5, 6, and 7, which protrude upward in a steady state, increase the engagement of the upper end of the shoji screen 3 with the upper frame 21. Therefore, even if the shoji screen 3 moves downward or the position of the upper crosspiece 31 of the shoji screen 3 drops for some reason, the engagement between the groove 214 and the shoji screen 3 can be maintained. This prevents the shoji screen 3 from coming off the frame 2. When the upper end of the shoji screen 3 is inserted into the groove 214 of the upper frame 21, the upper anti-slip members 5, 6, and 7 are pressed against the upper end and their height dimensions are reduced, so there is no risk that the upper anti-slip members 5, 6, and 7 will interfere with the insertion of the shoji screen 3 into the groove 214.

If the upper anti-slip member 5 has an elastically deformable plate-like member 51 that protrudes from the upper end surface of the shoji screen 3 toward the base plate 213, which is the inner bottom surface of the groove 214 of the upper frame 21, a compressible and reversible upper anti-slip member 5 can be easily constructed on the shoji screen 3.

When the plate-like member 51 protrudes diagonally upward from the upper end surface of the shoji screen 3 along the length of the upper crosspiece 31, the load that is applied when the upper end of the shoji screen 3 moves in a direction that disengages it toward the interior of the room can be supported across the width of the plate-like member 51, which is highly effective in preventing the upper end of the shoji screen 3 from disengaging from the upper frame 21.

When the plate-like member 51 protrudes diagonally upward from the outside of the upper end surface of the shoji screen 3 toward the inside of the room, the direction in which the shoji screen 3 is pushed toward the groove 214 coincides with the direction in which the plate-like member 51 falls. Therefore, when the upper end of the shoji screen 3 is pushed into the groove 214, the upper anti-detachment member 5 can be smoothly deformed. Because the tip 51a of the plate-like member 51 with the highest protrusion height is positioned on the inside of the room, a large vertical distance can be secured to maintain engagement between the shoji screen 3 and the upper frame 21.

When the plate-like member 51 protrudes in a mountain-like shape from the upper end surface of the shoji screen 3 along the length of the upper crosspiece 31, it elastically deforms while moving along the length of the upper crosspiece 31 when pressed, and is therefore easily compressed by the pressure. As a result, the upper end of the shoji screen 3 can be easily inserted into the groove 214 with little pressing force.

The upper anti-detachment member 6 has a movable member 61 that is movable up and down. The movable member 61 itself does not elastically deform, so it is highly effective in preventing the upper end of the shoji screen 3 from detaching from the upper frame 21.

The upper anti-detachment member 7 has a tubular member 71 made of elastically deformable resin. The tubular member 71 can be extruded in the longitudinal direction, making it easy to form the upper anti-detachment member 7 at low cost.

1. Fixed window (door and window fixture), 2. Frame, 21. Upper frame, 213. Base plate (inner bottom surface of groove), 22. Lower frame, 23. Vertical frame, 3. Shoji screen, 30. Frame, 31. Upper rail, 313a. Upper surface (upper edge surface of shoji screen), 32. Lower rail, 33. Vertical frame, 333a. Upper surface (upper edge surface of shoji screen), 34. Face material, 5. Upper retaining member, 51. Plate-shaped member, 6. Upper retaining member, 61. Movable member, 7. Upper retaining member, 71. Cylindrical member

Claims (3)

a frame body having an upper frame, a lower frame, and left and right vertical frames, with grooves in the upper frame and the lower frame;
A shoji screen has a surface material on the inside of a frame body having an upper crosspiece, a lower crosspiece, and left and right vertical crosspieces, and is held in the upper frame and the lower frame by inserting the upper end and the lower end into the grooves, respectively;
An upper stopper member is provided on the upper end surface of the shoji screen so as to protrude upward and prevent the shoji screen from coming off the upper frame,
The upper stopper member has an elastically deformable plate-like member that protrudes from the upper end surface of the shoji toward the inner bottom surface of the groove portion of the upper frame,
The plate-like member protrudes diagonally upward from the outside of the upper end surface of the shoji screen toward the inside of the room , and is compressed and deformed when the upper end of the shoji screen is pressed against the inner bottom surface of the groove portion of the upper frame, and is capable of returning to its original state when the pressure is released. a frame body having an upper frame, a lower frame, and left and right vertical frames, with grooves in the upper frame and the lower frame;
A shoji screen has a surface material on the inside of a frame body having an upper crosspiece, a lower crosspiece, and left and right vertical crosspieces, and is held in the upper frame and the lower frame by inserting the upper end and the lower end into the grooves, respectively;
An upper stopper member is provided on the upper end surface of the shoji screen so as to protrude upward and prevent the shoji screen from coming off the upper frame,
The upper anti-slip member has a movable member with a T-shaped cross section that is movable up and down, and when the upper end of the shoji screen is pressed against the inner bottom surface of the groove portion of the upper frame, it is compressed and deformed, and when the pressure is released, it can return to its original state . a frame body having an upper frame, a lower frame, and left and right vertical frames, with grooves in the upper frame and the lower frame;
A shoji screen has a surface material on the inside of a frame body having an upper crosspiece, a lower crosspiece, and left and right vertical crosspieces, and is held in the upper frame and the lower frame by inserting the upper end and the lower end into the grooves, respectively;
An upper stopper member is provided on the upper end surface of the shoji screen so as to protrude upward and prevent the shoji screen from coming off the upper frame,
The upper anti-slip member is a fitting that has a tubular member made of elastically deformable resin, and is compressed and deformed when the upper end of the shoji screen is pressed against the inner bottom surface of the groove portion of the upper frame, and can return to its original state when the pressure is released .