Construction tool

Abstract

To provide a fitting capable of preventing a sash from coming off from a frame even if the sash moves downward or the position of the upper crosspiece of the sash goes down by securing the engagement of the sash and the upper frame.SOLUTION: The fitting includes: a frame that has an upper frame, a lower frame, and left and right vertical frames, and has grooves in the upper frame and lower frame; a sash that has a plane material inside the stile that has an upper crosspiece, a lower crosspiece, and left and right stiles, which is held by inserting the upper end and the lower end into the grooves on the upper frame and lower frame; and an upper retaining member that is detachably attached to the lower surface of the upper frame so as to protrude downward to prevent the sash from coming off from the upper frame.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present disclosure relates to fittings.

Background Art

[0002] Conventionally, there has been known a fitting in which the upper and lower portions of a shoji screen are stored and supported in a kendon manner in rail grooves provided in an upper frame and a lower frame, and the shoji screen is not supported by the left and right vertical frames (see, for example, Patent Document 1). In this fitting, in order to prevent the shoji screen from coming off the lower frame when the shoji screen floats upward due to vertical shaking during an earthquake, a detachment prevention member that protrudes toward the rail groove of the lower frame is provided at the fixing portion of the handle of the lower rail of the shoji screen.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The inventor further examined the cause of the shoji screen coming off the frame body other than when the shoji screen comes off the lower frame due to vertical shaking during an earthquake. As a result, it was found that when the lower frame is bent due to poor construction of the frame body or the like, the shoji screen may move downward and the engagement between the shoji screen and the upper frame may be released, and the shoji screen may come off the frame body.

[0005] Furthermore, generally, since direct sunlight irradiated on the fitting from the outdoor side enters a large amount around the lower part of the fitting, thermal deformation may occur in which the lower rail of the shoji screen contracts in the viewing direction. Also, when the lower rail softens due to heat from direct sunlight, the lower rail may bend due to the weight of the facing material such as glass stored in the shoji screen, and the shoji screen may be deformed, and the vertical dimension of the shoji screen may become smaller. When the vertical dimension of the shoji screen becomes smaller, the position of the upper rail of the shoji screen drops, so that the engagement state between the shoji screen and the frame body changes, and there is a risk that the shoji screen rattles or the shoji screen comes off the frame body.

[0006] Therefore, the inventor has found a problem of preventing the shoji from coming off the frame by maintaining the engagement state between the shoji and the upper frame even when the shoji moves downward or the position of the upper rail of the shoji drops.

Means for Solving the Problem

[0007] The fitting of the present disclosure includes a frame body having an upper frame, a lower frame, and left and right vertical frames and having groove portions in the upper frame and the lower frame, a shoji having a facing material inside a frame body having an upper rail, a lower rail, and left and right vertical frames, and the upper end portion and the lower end portion being inserted into the groove portions to be held by the upper frame and the lower frame, and an upper detachment prevention member detachably attached to the lower surface of the upper frame so as to protrude downward and preventing the shoji from coming off the upper frame.

Brief Description of the Drawings

[0008]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Mode for Carrying Out the Invention

[0009] Hereinafter, embodiments of the fitting of the present disclosure will be described in detail with reference to the drawings. This embodiment shows a FIX window 1 as a fitting. The FIX window 1 is a so-called fixed window and is attached inside a frame 101 provided along the inner circumference of a rectangular opening 100 of a building body. The FIX window 1 does not open or close the opening 100 except when the shoji 3 is removed for cleaning or the like.

[0010] Figure 1 is a front view of the FIX window 1 seen from the indoor side. In FIGS. 2, 3, 4, and 6, the X1 direction indicates the outdoor side of the FIX window 1, and the X2 direction indicates the indoor side of the FIX window 1. Other windows (not shown), such as FIX windows and sliding windows, may be further attached inside the frame 101 on the outdoor side of the FIX window 1. Thereby, a double window is constructed inside the frame 101, and the heat insulation and sound insulation properties are further improved. The FIX window 1 of the present embodiment can be retrofitted on the indoor side of an existing window (not shown).

[0011] The FIX window 1 includes a frame body 2 provided inside the frame 101, a shoji 3 housed inside the frame body 2, a lower detachment prevention member 4, and an upper detachment prevention member 5. The frame body 2 is configured by framing an upper frame 21, a lower frame 22, and left and right vertical frames 23, 24 in a rectangle. The shoji 3 is removably fitted inside the frame body 2. Both the lower detachment prevention member 4 and the upper detachment prevention member 5 are members for preventing the shoji 3 from coming off the frame body 2.

[0012] The upper frame 21 of the frame body 2 is integrally extruded and formed of a resin material. The upper frame 21 has a first hollow portion 211 having a rectangular cross-section arranged on the outdoor side, a second hollow portion 212 having a rectangular cross-section arranged on the indoor side, and a flat plate-like substrate portion 213 connecting the upper ends of the first hollow portion 211 and the second hollow portion 212. The first hollow portion 211, the second hollow portion 212, and the substrate portion 213 extend over the entire length of the upper frame 21 in the extending direction. The first hollow portion 211 and the second hollow portion 212 protrude downward from the substrate portion 213 at the same height.

[0013] The first hollow portion 211 and the second hollow portion 212 are arranged in parallel at a distance in the indoor-outdoor direction. As a result, a groove portion 214 extending over the entire length in the extending direction of the upper frame 21 is formed between the first hollow portion 211, the second hollow portion 212, and the substrate portion 213. The groove portion 214 is open downward and accommodates the upper end portion of the shoji 3. The substrate portion 213 constitutes the inner bottom surface of the groove portion 214. At the lower end portion of the first hollow portion 211, a sealing portion 215 that protrudes toward the indoor side and elastically contacts the outdoor side surface of the shoji 3 is integrally provided. At the lower end portion of the second hollow portion 212, a fin portion 216 that protrudes toward the outdoor side and elastically contacts the indoor side surface of the shoji 3 is integrally provided. The upper frame 21 is fixed to the upper inner surface of the frame 101 by a fixing screw SC1 that penetrates the substrate portion 213.

[0014] The lower frame 22 of the frame body 2 is integrally extrusion-molded from a resin material. The lower frame 22 has a first hollow portion 221 having a hollow structure with a rectangular cross-section disposed on the outdoor side, a second hollow portion 222 having a hollow structure with a rectangular cross-section disposed on the indoor side, and a flat plate-shaped substrate portion 223 that connects the lower end portions of the first hollow portion 221 and the second hollow portion 222. The first hollow portion 221, the second hollow portion 222, and the substrate portion 223 extend over the entire length in the extending direction of the lower frame 22. The first hollow portion 221 and the second hollow portion 222 of the present embodiment protrude upward from the substrate portion 223 at the same height, but do not necessarily have to protrude at the same height.

[0015] The first hollow portion 221 and the second hollow portion 222 are arranged in parallel while being separated from each other in the indoor-outdoor direction. As a result, a groove portion 224 extending over the entire length in the extending direction of the lower frame 22 is formed between the first hollow portion 221, the second hollow portion 222, and the substrate portion 223, similar to the upper frame 21. The groove portion 224 opens upward and houses the lower end portion of the shoji 3. The substrate portion 223 constitutes the inner bottom surface of the groove portion 224. An upper end portion of the first hollow portion 221 is integrally provided with a sealing portion 225 that protrudes toward the indoor side and elastically contacts the outdoor-side surface of the shoji 3. An upper end portion of the second hollow portion 222 is integrally provided with a fin portion 226 that protrudes toward the outdoor side and elastically contacts the indoor-side surface of the shoji 3. The lower frame 22 is fixed to the lower inner surface of the frame 101 by fixing screws SC2 that penetrate the substrate portion 223.

[0016] The vertical frames 23 and 24 of the frame body 2 are each integrally extrusion-molded in a substantially L shape from a resin material. The vertical frames 23 and 24 extend vertically between the upper frame 21 and the lower frame 22. The vertical frames 23 and 24 include substrate portions 231 and 241 that extend in a predetermined width along the vertical direction of the frame 101, outdoor wall portions 232 and 242 that extend substantially at a right angle from the outdoor end portions of the substrate portions 231 and 241 toward the inside of the frame 101, and abutting piece portions 233 and 243 that extend substantially at a right angle from the inner end portions of the outdoor wall portions 232 and 242 toward the indoor side.

[0017] The abutting piece portions 233 and 243 are formed to be narrower in width than the substrate portions 231 and 241 so as to contact the outdoor-side surface of the shoji 3. Sealing portions 234 and 244 that elastically contact the outdoor-side surface of the shoji 3 are integrally provided at the tips of the abutting piece portions 233 and 243, respectively. The vertical frames 23 and 24 are fixed to the left and right side inner surfaces of the frame 101 by fixing screws SC3 and SC4 that penetrate the substrate portions 231 and 241, respectively.

[0018] The shoji 3 is configured by housing a facing material 35 such as glass through a glazing channel 351 inside a frame body 30 formed by rectangularly framing an upper rail 31, a lower rail 32, and left and right vertical frames 33 and 34. The facing material may be a multilayer glass composed of two sheets of glass. In the case of multilayer glass, it is held by a holding member made of soft vinyl chloride provided in the frame body.

[0019] As shown in FIG. 2, the upper rail 31 and the lower rail 32 are each composed of a metal core material 311, 321, a resin cover material 312, 322 that covers the outside thereof, and resin upper cover materials 313 and lower cover materials 323 attached to the upper and lower end faces of the resin cover materials 312, 322. As shown in FIG. 3, the vertical frames 33 and 34 are each composed of a metal core material 331, 341 and a resin cover material 332, 342 that covers the outside thereof.

[0020] As shown in FIG. 1, the shoji 3 has a vertical-win structure in which the upper rail 31 and the lower rail 32 are arranged between the left and right vertical frames 33 and 34. Specifically, the left and right vertical frames 33 and 34 extend over the entire length in the height direction of the shoji 3. The upper rail 31 and the lower rail 32 are arranged between the left and right vertical frames 33 and 34, and connect the upper ends and the lower ends of the vertical frames 33 and 34 to each other. A substantially U-shaped handle 36 is attached to the central portion of the indoor-side surface of the lower rail 32.

[0021] The shoji 3 is inserted in a kendon style from the indoor side into the groove portion 214 of the upper frame 21 and the groove portion 224 of the lower frame 22 as follows. First, the upper end portion of the shoji 3 is inserted deep into the groove portion 214 of the upper frame 21. Next, the lower end portion of the shoji 3 is aligned with the groove portion 224 of the lower frame 22. Then, as the shoji 3 descends, the lower end portion of the shoji 3 is inserted into the groove portion 224 of the lower frame 22. As a result, the upper end portion and the lower end portion of the shoji 3 are respectively accommodated in the groove portions 214 and 224, and the shoji 3 is fitted and held between the upper frame 21 and the lower frame 22. The left and right vertical frames 23 and 24 only bring the sealing portions 234 and 244 at the tips of the contact piece portions 233 and 243 into contact with the outdoor-side surface of the shoji 3, and do not hold the shoji 3.

[0022] The depths of the groove portion 214 of the upper frame 21 and the groove portion 224 of the lower frame 22 are the same. However, as shown in FIG. 2, inside the groove portion 224 of the lower frame 22, a plurality of resin liners 227 for supporting the lower end portion of the shoji 3 are provided at predetermined intervals. The liner 227 is formed in a block shape and has a height slightly lower than the heights 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 3 accommodated in the groove portion 224 of the lower frame 22 is disposed at a position slightly lower than the upper end surfaces of the first hollow portion 221 and the second hollow portion 222 of the lower frame 22.

[0023] In this state, the upper end portion of the shoji 3 is engaged with the upper frame 21 while maintaining the state of being accommodated in the groove portion 214 of the upper frame 21. The lower end portion of the shoji 3 is engaged with the lower frame 22 while maintaining the state of being accommodated in the groove portion 224 of the lower frame 22. The sealing portion 215 and the fin portion 216 of the upper frame 21 abut against the upper end portion of the shoji 3 from the outdoor side and the indoor side, respectively, to prevent rattling of the upper end portion of the shoji 3 and to prevent the intrusion of dust and the like from the outside. The sealing portion 225 and the fin portion 226 of the lower frame 22 abut against the lower end portion of the shoji 3 from the outdoor side and the indoor side, respectively, to prevent rattling of the lower end portion of the shoji 3 and to prevent the intrusion of dust and the like from the outside.

[0024] Next, the lower detachment prevention member 4 will be described. The lower detachment prevention member 4 is the same member as in the prior art, and as shown in FIGS. 1, 2, and 4, it is disposed between one of the pair of base portions 361, 361 of the handle 36 and the indoor side surface 32a of the lower rail 32 of the shoji 3.

[0025] The lower anti-disengagement member 4 includes a holding portion 41 which is a vertically long rectangular metal or resin case, a locking tongue piece 42 made of a metal plate material housed inside the holding portion 41, and a long hole 43 that is long in the vertical direction and penetrates across the holding portion 41 and the locking tongue piece 42. The locking tongue piece 42 is formed in a long plate shape that is longer in the vertical direction than the holding portion 41. Approximately the upper half of the locking tongue piece 42 is inserted into the holding portion 41. Approximately the lower half of the locking tongue piece 42 protrudes into the groove portion 224 of the lower frame 22 from the holding portion 41 as shown in FIG. 2. Since the upper end surface 41a of the holding portion 41 is closed, the locking tongue piece 42 inside the holding portion 41 does not move upward. The corners at the upper end of the locking tongue piece 42 protruding from the holding portion 41 are chamfered in an R shape.

[0026] The lower anti-disengagement member 4 is attached to the indoor side surface 32a of the lower cross member 32 by a fixing screw 44. Specifically, the lower anti-disengagement member 4 is disposed between the indoor side surface 32a of the lower cross member 32 of the shoji 3 before being attached to the frame body 2 and the base portion 361 of the handle 36. The lower anti-disengagement member 4 is temporarily fixed by the fixing screw 44 for attaching the base portion 361 being loosely fitted into the screw insertion hole of the base portion 361. At this time, the lower anti-disengagement member 4 moves upward so that the shaft portion 431 (see FIG. 2) of the fixing screw 44 is disposed on the lower end side of the long hole 43 so as not to interfere with the insertion operation into the groove portion 224 of the lower frame 22 at the lower end portion of the shoji 3. Therefore, the lower anti-disengagement member 4 is temporarily fixed at a position above the final attachment position.

[0027] After the shoji 3 is fitted into the frame body 2 in the Kendo style, the lower detachment prevention member 4 is slid downward along the long hole 43. As a result, as shown in FIG. 2, the locking tongue piece 42 is inserted into the groove portion 224 of the lower frame 22 from the gap between the second hollow portion 222 of the lower frame 22 and the lower rail 32 of the shoji 3. The locking tongue piece 42 in the groove portion 224 protrudes below the lower end cover material 323 of the lower rail 32 of the shoji 3 and is disposed between the liner 227 and the second hollow portion 222 of the lower frame 22. The lower end portion 42a of the locking tongue piece 42 is close to the substrate portion 223 of the lower frame 22. Thereafter, by tightening the fixing screw 44, the lower detachment prevention member 4 is clamped between the lower rail 32 and the base portion 361 of the handle 36 and fixed to the lower rail 32. Since the shaft portion 431 of the fixing screw 44 is disposed at the upper end of the long hole 43, the locking tongue piece 42 in the holding portion 41 does not move downward.

[0028] By attaching the lower detachment prevention member 4 to the lower rail 32 of the shoji 3, even if the shoji 3 moves upward due to vertical shaking during an earthquake or the like, the locking tongue piece 42 maintains the engagement state with the groove portion 224 of the lower frame 22. Therefore, the lower end portion of the shoji 3 is prevented from coming off the lower frame 22.

[0029] Next, the upper detachment prevention member 5 will be described. The upper detachment prevention member 5 is made of metal or resin. As shown in FIGS. 1 to 3, the upper detachment prevention member 5 has a substantially rectangular parallelepiped block shape and is provided on the upper frame 21. Specifically, as shown in FIGS. 1 and 2, the upper detachment prevention member 5 is detachably attached to the lower surface 212a of the second hollow portion 212 disposed on the indoor side of the upper frame 21. The upper detachment prevention member 5 of the present embodiment is disposed at the end on the vertical frame 24 side of the lower surface 212a of the second hollow portion 212. The upper detachment prevention member 5 may be disposed at the end on the vertical frame 23 side of the lower surface 212a of the second hollow portion 212. The upper detachment prevention members 5 may be dispersedly arranged at a plurality of locations including the end on the vertical frame 23 side and the end on the vertical frame 24 side of the lower surface 212a of the second hollow portion 212.

[0030] As shown in FIGS. 3 and 5, a mounting hole 217 formed of a long hole extending along the length direction of the upper frame 21 is formed on the lower surface 212a of the second hollow portion 212 of the upper frame 21. The mounting hole 217 is composed of a wide portion 217a with a wide width in the indoor-outdoor direction and a narrow portion 217b with a narrow width in the indoor-outdoor direction. The narrow portion 217b is disposed closer to the vertical frame 24 side than the wide portion 217a. The wide portion 217a and the narrow portion 217b are continuous in the length direction of the upper frame 21.

[0031] As shown in FIG. 6, the upper detachment prevention member 5 has a block-shaped detachment prevention member main body 51 and a locking portion 52 integrally provided so as to protrude upward from the detachment prevention member main body 51. The width of the detachment prevention member main body 51 in the indoor-outdoor direction is substantially the same as the width of the second hollow portion 212 of the upper frame 21 in the indoor-outdoor direction. The locking portion 52 has a leg portion 521 protruding upward from the detachment prevention member main body 51 and an overhanging portion 522 protruding from both sides in the indoor-outdoor direction from the upper end of the leg portion 521. The width of the leg portion 521 in the indoor-outdoor direction is the same as or slightly larger than the width of the narrow portion 217b of the mounting hole 217 in the indoor-outdoor direction. The width of the overhanging portion 522 in the indoor-outdoor direction is a width less than or equal to the width of the wide portion 217a of the mounting hole 217 in the indoor-outdoor direction and larger than the width of the narrow portion 217b of the mounting hole 217 in the indoor-outdoor direction. The length of the overhanging portion 522 in the direction orthogonal to the indoor-outdoor direction is less than or equal to the length of the wide portion 217a of the mounting hole 217 along the length direction of the upper frame 21. Thereby, the locking portion 52 can be engaged with and disengaged from the mounting hole 217.

[0032] The upper detachment prevention member 5 is attached to the lower surface 212a of the second hollow portion 212 of the upper frame 21 after the shoji 3 is fitted into the frame body 2 in the Kendon style. Specifically, the overhanging portion 522 of the locking portion 52 is inserted into the wide portion 217a of the mounting hole 217 from below the upper frame 21 after the shoji 3 is fitted into the frame body 2. Then, as shown by the white arrow in FIG. 5, the detachment prevention member main body 51 is slid along the length direction of the mounting hole 217 toward the vertical frame 24 side, and the leg portion 521 is inserted from the wide portion 217a of the mounting hole 217 into the narrow portion 217b. Thereby, the leg portion 521 is press-fitted into the narrow portion 217b of the mounting hole 217, and the upper detachment prevention member 5 is held by the mounting hole 217.

[0033] When the upper anti-disengagement member 5 is attached to the upper frame 21, as shown in FIGS. 1 and 2, the downward protruding height of the second hollow portion 212 of the upper frame 21 becomes partially high. Therefore, by appropriately setting the vertical height of the anti-disengagement member main body 51, even when the shoji 3 moves downward due to deformation of the lower frame 22 or the like, or the vertical dimension of the shoji 3 becomes smaller due to thermal deformation of the lower rail 32 of the shoji 3 and the position of the upper rail 31 drops, the upper end portion of the shoji 3 engages with the upper anti-disengagement member 5, so that the engagement state between the shoji 3 and the upper frame 21 can be maintained. Therefore, the shoji 3 is prevented from coming off the frame body 2. The upper anti-disengagement member 5 can be easily attached and detached simply by sliding it laterally with respect to the mounting hole 217 provided in the second hollow portion 212.

[0034] As shown in FIG. 3, in the mounting hole 217 of the present embodiment, a part of the wide portion 217a after the upper anti-disengagement member 5 is attached is exposed. The exposed portion of the wide portion 217a may be sealed by attaching a sealing member (not shown) made of resin or rubber or the like. Since the slide of the upper anti-disengagement member 5 in the disengagement direction after the attachment is blocked by the sealing member, it is possible to prevent the upper anti-disengagement member 5 from accidentally falling off the mounting hole 217. The mounting hole 217 may be formed so as to be hidden by the anti-disengagement member main body 51 after the attachment is completed.

[0035] As described above, according to the FIX window 1 of the present embodiment, the following effects can be obtained. That is, the FIX window 1 includes a frame body 2 having an upper frame 21, a lower frame 22, and left and right vertical frames 23, 24, and having groove portions 214, 224 in the upper frame 21 and the lower frame 22, a panel 3 having a face material 35 inside a frame body 30 having an upper rail 31, a lower rail 32, and left and right vertical rails 33, 34, and the panel 3 being held by the upper frame 21 and the lower frame 22 by inserting upper and lower end portions into the groove portions 214, 224, and an upper detachment prevention member 5 detachably attached to the lower surface 212a of the upper frame 21 so as to protrude downward to prevent the panel 3 from coming off the upper frame 21. According to this, even if the panel 3 moves downward due to deformation of the lower frame 22 or the like, or the vertical dimension of the panel 3 becomes smaller due to thermal deformation of the lower rail 32 of the panel 3 and the position of the upper rail 31 drops, the upper end portion of the panel 3 engages with the upper detachment prevention member 5, so that the engagement state between the panel 3 and the upper frame 21 can be maintained, and the panel 3 can be prevented from coming off the frame body 2.

[0036] In the FIX window 1 of the present embodiment, the upper frame 21 has a mounting hole 217 formed of a long hole on the lower surface 212a of the second hollow portion 212. The upper detachment prevention member 5 includes a detachment prevention member main body 51 protruding downward from the lower surface 212a of the second hollow portion 212 of the upper frame 21, and a locking portion 52 provided on the detachment prevention member main body 51 and detachably engaged by being inserted into the mounting hole 217 and sliding in the length direction. According to this, the upper detachment prevention member 5 can be easily detachably attached to the upper frame 21 only by inserting the locking portion 52 into the mounting hole 217 and sliding it in the lateral direction.

[0037] The upper detachment prevention member 5 of the present embodiment is attached to the lower surface 212a of the second hollow portion 212 of the upper frame 21. That is, the upper detachment prevention member 5 is attached to the indoor side of the panel 3 on the lower surface of the upper frame 21. Therefore, the upper detachment prevention member 5 can be easily detached and attached to the panel 3 from the indoor side after the panel 3 is attached to the frame body 2.

[0038] The upper retaining member 5 is not limited to being configured to be detachable by sliding it in the lateral direction with respect to the mounting hole 217. Although not shown in any figure, the upper retaining member 5 may be detachably attached by simply press-fitting it into the mounting hole provided in the lower surface 212a of the second hollow portion 212 of the upper frame 21 from below upward. The upper retaining member 5 may be detachably attached by moving it in the rotational direction with respect to the mounting hole provided in the lower surface 212a of the second hollow portion 212 of the upper frame 21. The upper retaining member 5 may be detachably attached by sliding it from the indoor side toward the outdoor side with respect to the lower surface 212a of the second hollow portion 212 of the upper frame 21.

[0039] The upper retaining member 5 is not limited to a block shape that is substantially a rectangular parallelepiped. Although not shown in any figure, the upper retaining member 5 may have a cylindrical shape, a cylindrical shape, a plate shape, etc., as long as it protrudes downward from the upper frame 21.

[0040] In the above embodiment, the FIX window is taken as an example of the fitting, but the fitting is not limited to the FIX window, and may be, for example, a sliding window. By providing a plurality of the above-described mounting holes 217 and upper retaining members 5 at a plurality of locations on the upper frame of the sliding window, the same effects as described above can be achieved.

Explanation of Reference Numerals

[0041] 1 FIX window, 2 frame body, 3 shoji, 5 upper retaining member, 21 upper frame, 22 lower frame, 23, 24 vertical frames, 30 frame, 31 upper rail, 32 lower rail, 33, 34 vertical frames, 35 facing material, 51 retaining member main body, 52 locking portion, 214, 224 groove portions, 212a lower surface, 217 mounting hole

Claims

1. A frame body having an upper frame, a lower frame, and left and right vertical frames, and having groove portions on the upper frame and the lower frame; A shoji having a facing material on the inner peripheral side of a frame body having an upper rail, a lower rail, and left and right vertical frames, and being held by the upper frame and the lower frame by inserting upper and lower end portions into the groove portions; An upper detachment prevention member detachably attached to the lower surface of the upper frame so as to protrude downward, for preventing the shoji from coming off the upper frame; and The upper frame has a mounting hole formed of a long hole on the lower surface of the upper frame; The upper detachment prevention member has a detachment prevention member body protruding downward from the lower surface of the upper frame, and a locking portion provided on the detachment prevention member body and being inserted into the mounting hole and slidable in the longitudinal direction to enable engagement and disengagement, a fitting.

2. The fitting according to claim 1, wherein the upper detachment prevention member is attached to the indoor side of the shoji on the lower surface of the upper frame.

Images