Water-stopping structure for sash and water-stopping sheet fixing member

Abstract

To facilitate the attachment of a water-stopping sheet to a sash frame without screwing fastening members such as bolts and nuts.SOLUTION: A water-stopping structure of a sash includes: a sash frame provided with sheet mounting projections 1d; a water-stop sheet 2 that covers a sash opening from a bottom frame 1b of the sash frame to a predetermined height of a pair of left and right vertical frames and is provided with through holes for projections through which the sheet mounting projections 1d pass; a bottom frame sheet pressing member 3 that is provided with through holes for projections and that sandwiches and presses an overlapping portion of the water-stop sheet with the bottom frame 1b between the bottom frame 1b and the water-stop sheet; a sheet pressing member for the vertical frame, which is provided with through holes for projections and which sandwiches and presses the overlapping portions of the water-stop sheet 2 with the vertical frames between the water-stop sheet 2 and the vertical frames; and a water-stop sheet fixing member 5 having a shaft portion through-groove through which the shaft portion 1d2 of the sheet mounting protrusion 1d passes, and which passes the shaft portion 1d2 of the sheet mounting protrusion 1d through the shaft portion through-groove, thereby pressing the water-stop sheet 2 against the lower frame 1b and the vertical frames via the sheet holding member 3 for the lower frame and the sheet holding member for the vertical frame.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a water-stopping structure for a sash and a water-stop sheet fixing member for preventing water from entering through an opening in a building. [Background technology]

[0002] Conventionally, a sash waterproof structure for preventing water from seeping in through an opening in a building has been proposed, which includes a water-stop sheet that is arranged from the lower frame to a predetermined height of the pair of left and right vertical frames so as to cover, from the outside, at least a portion of the sash opening, which is surrounded by a sash frame having an upper frame, a lower frame, and a pair of left and right vertical frames; a seal (waterproof gasket) that ensures watertightness between the sash frame and the water-stop sheet; and a water-stop sheet fixing member that is removably fastened to the sash frame with the water-stop sheet and seal sandwiched between the sash frame and the seal. The sash frame is provided with a holder portion (bolt retaining hole) for engaging fastening members such as bolts and nuts, so that water-stopping can be ensured by the action of the water-stop sheet and seal even when water seeps in up to the height of the building opening (sash opening). Therefore, a water-stop structure for a sash that is configured to suppress water seeping in through the sash opening into the building has been proposed (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-16136 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the inventions of Patent Documents 1 and 2 mentioned above, the waterproof sheet is fixed to the sash frame by screwing in fastening members such as bolts and nuts, which poses the problem that it takes time and effort to screw in fastening members such as bolts and nuts.

[0005] Therefore, the present invention has been made to solve such problems, and aims to provide a sash waterproofing structure and a waterproof sheet fixing member that allow a waterproof sheet to be easily attached to a sash frame without screwing in fastening members such as bolts and nuts. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems, the waterproof structure for a sash according to the present invention comprises a sash frame having an upper frame, a lower frame, and a pair of left and right vertical frames, the sash frame being provided with axles that protrude to the outdoors at predetermined intervals between the lower ends of the lower frame and the pair of left and right vertical frames up to a predetermined height, and sheet attachment protrusions having heads with a diameter larger than that of the axles; a water stop sheet that is arranged between the lower frame and the pair of left and right vertical frames up to a predetermined height so as to cover at least a portion of a sash opening surrounded by the sash frame from the outdoors side, and that is provided with protrusion through holes through which the sheet attachment protrusions pass; and a water stop sheet that is provided in the lower frame and has protrusion through holes through which the sheet attachment protrusions pass, and that has a bottom frame overlapping portion of the water stop sheet that overlaps the bottom frame, the bottom frame overlapping portion being provided with a protrusion through hole. The waterproof sheet fixing member is characterized by comprising: a sheet holding member for the lower frame that is clamped and pressed between the lower frame; a sheet holding member for the vertical frames that has protrusion through holes for passing the sheet mounting protrusions provided on each of the left and right vertical frames, and that clamps and presses the overlapping portions of the vertical frames that overlap the respective vertical frames in the waterproof sheet between the vertical frames; and a water-stop sheet fixing member that has a shaft through-groove through which the shaft of the sheet mounting protrusion passes but not its head, and is provided with a pressing surface that passes the shaft of the sheet mounting protrusion through the shaft through-groove and presses the overlapping portions of the water-stop sheet with the sash frame against the lower frame and the pair of left and right vertical frames via the sheet holding member for the lower frame and the sheet holding member for the vertical frames. In addition, in the waterproof structure of the sash of the present invention, the waterproof sheet fixing member has, on the back side of the pressing surface portion, an inclined surface portion which gradually increases in height from the tip to the rear end of the waterproof sheet fixing member, and a horizontal surface portion which is continuous with the inclined surface portion, and the shaft passage groove portion is formed in a tip opening shape from the tip of the waterproof sheet fixing member to the horizontal surface portion via the inclined surface portion. In addition, in the water-stopping structure of the sash of the present invention, the water-stopping sheet fixing member is also characterized by having a pressure plate portion on which the pressure surface portion, the inclined surface portion, the horizontal surface portion and the shaft portion passing groove portion are provided, a pair of side plate portions standing upright on both the left and right sides of the pressure plate portion, and an upper plate portion provided above the side plate portions. In addition, in the water-stopping structure of the sash of the present invention, the sheet holding member for the lower frame is formed in a divided form and is attached to the water-stopping sheet in advance by aligning its through hole for the protrusion with the through hole for the protrusion of the water-stopping sheet, and the length of the divided sheet holding member for the lower frame is also characterized by being greater than or equal to the length of the sheet holding member for the vertical frame. Furthermore, the water-stopping structure of the sash according to the present invention is also characterized in that a pressure-changing portion is provided around the shaft-through groove portion of the water-stopping sheet fixing member, in which the pressure changes when the shaft portion of the sheet mounting protrusion passes through the shaft-through groove portion from the inclined surface portion to the horizontal surface portion as a result of the water-stopping sheet fixing member being pressed and urged. In addition, the water-stop sheet fixing member of the present invention is a water-stop sheet fixing member that presses a water-stop sheet that covers at least a portion of a sash opening surrounded by a sash frame having an upper frame, a lower frame, and a pair of left and right vertical frames from the outside side, against the lower frame and each of the pair of left and right vertical frames via a sheet pressing member for the lower frame and a sheet pressing member for the vertical frames, and is characterized in that it has a shaft portion passing groove that is arranged to protrude outside at a predetermined interval between the lower ends of the lower frame and the pair of left and right vertical frames to a predetermined height, and has a shaft portion passing groove that has a width greater than the outer diameter of the shaft of a sheet mounting protrusion that has a shaft and a head and less than the outer diameter of the head, and a pressing surface portion that, when inserted between the head of the sheet mounting protrusion and the sheet pressing member for the lower frame or the sheet pressing member for the vertical frames, passes the shaft portion of the sheet mounting protrusion through the shaft portion passing groove and presses against the lower frame and each of the pair of left and right vertical frames via the sheet pressing member for the lower frame and the sheet pressing member for the vertical frames. [Effects of the Invention]

[0007] In this invention, a shaft-through groove having a width greater than the outer diameter of the shaft of the sheet mounting protrusion provided on the lower frame and the left and right vertical frames and less than the outer diameter of the head is provided, and multiple water-stop sheet fixing members are provided with pressing surface portions that pass the shafts of the sheet mounting protrusions through the shaft-through groove and press the overlapping portions of the water-stop sheet with the sash frame against the lower frame and a pair of left and right vertical frames via the sheet holding member for the lower frame and the sheet holding member for the vertical frame. Therefore, the sheet mounting projections provided on the lower frame and the pair of left and right vertical frames that make up the sash frame are passed through each projection through hole provided in the water-stopping sheet, and the area between the lower frame and the pair of left and right vertical frames up to a predetermined height is covered with the water-stopping sheet from the outside, and the overlapping portions of the water-stopping sheet with the lower frame and the left and right vertical frames are held down by the sheet holding member for the lower frame and the sheet holding member for the vertical frames.Furthermore, the water-stopping sheet fixing member is inserted between the head of the sheet mounting projection and the sheet holding member for the lower frame or the sheet holding member for the vertical frames so that the shaft portion of the sheet mounting projection passes through the shaft through groove of the water-stopping sheet fixing member, and the pressing surface portion of the water-stopping sheet fixing member can press the overlapping portions of the water-stopping sheet with the sash frame against the lower frame and the pair of left and right vertical frames via the sheet holding member for the lower frame and the sheet holding member for the vertical frames, respectively, so that the water-stopping sheet can be attached to the sash frame without screwing in fastening members such as bolts and nuts. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a front view of the appearance of the entire sash to which the waterproof structure for a sash according to a first embodiment of the present invention is applied. [Figure 2] FIG. 2 is an enlarged view of part A in FIG. [Figure 3] 1 is a plan view showing a simplified fitted state of a waterproof structure for a sash according to a first embodiment of the present invention. [Figure 4] FIG. 3 is an end view taken along the line BB in FIG. 2. [Figure 5] 3A and 3B are an enlarged front view and an end view taken along line EE of part C in FIG. 2, respectively. [Figure 6] 3(a) and (b) are an enlarged front view and an end view taken along line F-F of part D in FIG. 2, respectively. [Figure 7] 1 is a schematic diagram of a water stop sheet (after a sash sheet retaining member is attached) that constitutes the water stop structure for a sash according to the first embodiment of the present invention. [Figure 8] 1(a) to 1(c) are a perspective view, an enlarged front view, and a side view, respectively, of a sash sheet retaining member that constitutes a waterproof structure for a sash according to a first embodiment of the present invention. [Figure 9] 1(a) to 1(c) are a perspective view, a plan view, and a front view, respectively, of a water stop sheet fixing member that constitutes the water stop structure for a sash according to a first embodiment of the present invention. [Figure 10] 9(a) and 9(b) are a side view and a cross-sectional view taken along line GG in FIG. 9(c), respectively, of a water stop sheet fixing member that constitutes the water stop structure for a sash according to the first embodiment of the present invention. [Figure 11] (a) and (b) are diagrams showing the installation procedure for the components that make up the waterproof structure of the sash of embodiment 1 of the present invention, respectively: an end view showing the state just before the waterproof sheet and the lower frame sheet retaining member attached to the waterproof sheet are attached to the lower frame, and an end view showing the state just before the waterproof sheet fixing member is inserted. [Figure 12] (a) to (c) are figures showing the installation procedure for the components that make up the waterproof structure of the sash of embodiment 1 of the present invention, each showing the state just before the waterproof sheet is attached to the vertical frame, the state just before the sheet retaining member for the vertical frame is attached after the waterproof sheet has been attached, and the state just before the waterproof sheet fixing member is inserted. [Figure 13] 10(a) to 10(d) are a plan view, a perspective view, a front view, and a cross-sectional view along line HH of a water stop sheet fixing member that constitutes a water stop structure for a sash according to a second embodiment of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0009] A water-stopping structure for a sash according to a first embodiment of the present invention and a water-stop sheet mounting fixture 1 used in the water-stopping structure will be described below with reference to the drawings. Note that the first embodiment described below is merely one example of the present invention, and the present invention is not limited to the first embodiment described below, but can be modified as appropriate within the scope of the technical concept of the present invention.

[0010] The waterproof structure of the sash of embodiment 1 of the present invention is composed of a sash frame 1, a waterproof sheet 2, two sheet holding members 3, 3 for the lower frame and two sheet holding members 4, 4 for the vertical frame, a waterproof sheet fixing member 5, etc., as shown in Figures 1 to 4, etc.

[0011] (Sash frame 1) As shown in Figure 1, the sash frame 1 is composed of an upper frame 1a, a lower frame 1b, and a pair of left and right vertical frames 1c, 1c. In this embodiment, the outer shoji 6a and inner shoji 6b, which have frame materials around the glass on all four sides and rollers (not shown) on the lower frame, are moved and slid along rails 1b1 (see Figure 4) attached to the lower frame 1b, and sheet mounting projections 1d that protrude outdoors at predetermined intervals are provided between the lower ends of the lower frame 1b and the pair of left and right vertical frames 1c, 1c to a predetermined height.

[0012] The seat mounting protrusion 1d is, for example, as shown in Figure 4, etc., composed of a threaded screw portion 1d1, a cylindrical, cylindrical or columnar shank 1d2 without threads, and a shoulder screw (including a shoulder bolt) having a head 1d3 with a larger diameter than the shank 1d2, which is screwed into multiple female screw holes at predetermined intervals between the lower ends of the lower frame 1b and the pair of left and right vertical frames 1c, 1c and up to a predetermined height, with the shank 1d2 and head 1d3 protruding from the exterior surfaces of the lower frame 1b and the pair of left and right vertical frames 1c, 1c.

[0013] (Waterstop sheet 2) As shown in Fig. 1 and other figures, the waterproof sheet 2 is a well-known resin sheet with waterproofing properties that is placed between the bottom frame 1b and the pair of vertical frames 1c, 1c at a predetermined height so as to cover from the outdoors at least a portion of the lower side of the sash opening surrounded by the sash frame 1. At the overlapping points with the bottom frame 1b and the pair of vertical frames 1c, 1c, protrusion through-holes 2a (see Fig. 7) are provided to allow sheet mounting protrusions 1d to pass through, aligned with the positions of multiple sheet mounting protrusions 1d provided at predetermined intervals on the bottom frame 1b and the pair of vertical frames 1c, 1c. Also, on the opposite side of the contact points between the bottom frame sheet retaining members 3, 3 and the vertical frame sheet retaining members 4, 4, a well-known waterproof material (waterstop packing) 2b (see Figs. 4 to 6, etc.) made of rubber or other material and having a waterproof function is provided. The waterproof material (waterstop packing) 2b also has protrusion through-holes 2b1 (see Figs. 4 to 6, etc.).

[0014] (Lower frame sheet retainer 3,3) The lower frame sheet retaining members 3, 3 are attached to the lower frame 1b and press the waterproof sheet 2 against the lower frame 1b, and are configured in two parts as shown in Figure 1. Each lower frame sheet retaining member 3 is configured with a lower frame sheet retaining member body 3a made of an angle material such as aluminum with an L-shaped cross section having a web portion 3a1 and a flange portion 3a2 as shown in Figure 8, and resin end caps 3b, 3b attached to cover both the left and right ends of the lower frame sheet retaining member body 3a.

[0015] The web portion 3a1 of the lower frame sheet pressing member body 3a is provided with a plurality of protrusion through holes 3a11 aligned with the positions of a plurality of sheet attachment protrusions 1d provided at predetermined intervals on the lower frame 1b. The hole diameter r (see FIG. 8(b)) of the protrusion through holes 3a11 is formed to be slightly larger, for example, by about 2 mm, than the outer diameter (head diameter) R1 (see FIG. 5(b)) of the head 1d3 of the sheet attachment protrusion 1d.

[0016] In addition, the length L1 of each divided lower frame sheet holding member 3 is slightly smaller than half the length (width) L3 of the lower frame 1b as shown in Figure 1, but is larger than the length L2 of the vertical frame sheet holding members 4,4.

[0017] As shown in Figures 8(a) to (c), the end caps 3b, 3b are components that are provided at both ends of the lower frame sheet holding member main body 3a and cover both ends.For reasons such as making it easier for workers to grip, the end caps 3b, 3b have a width (height) W2 that is larger than the width W1 of the flange portion 3a2 of the lower frame sheet holding member main body 3a, and are formed so that the outer side protrudes beyond the flange portion 3a2, and have inclined surfaces 3b1, 3b1.

[0018] In this embodiment, the lower frame sheet retaining members 3, 3 are each attached to the waterproof sheet 2 in advance, as shown in Figure 7. Therefore, when storing the waterproof sheet 2, the lower frame sheet retaining members 3, 3, and the vertical frame sheet retaining members 4, 4, etc., the waterproof sheet 2 is rolled or folded together with each of the divided lower frame sheet retaining members 3, 3 and stored together with the vertical frame sheet retaining members 4, 4. In this case, since the length L1 of the lower frame sheet holding members 3,3 is greater than the length L2 of the vertical frame sheet holding members 4,4, after the waterproof sheet 2 is wrapped around the divided lower frame sheet holding members 3,3, by aligning the lower frame sheet holding members 3,3 in the center of the waterproof sheet 2, the waterproof sheet 2 and each lower frame sheet holding member 3,3 will be gathered together to about the length L1, and by sandwiching the vertical frame sheet holding members 4,4 of length L2 between them, the vertical frame sheet holding members 4,4 can be stored together efficiently without being lost or scattered.

[0019] (Vertical frame sheet retainer 4) The left and right vertical frame sheet holding members 4, 4 are respectively attached to the left and right vertical frames 1c, 1c and press the waterproof sheet 2 against the vertical frame 1c. As shown in Figure 6, similar to the lower frame sheet holding member 3, they are composed of a vertical frame sheet holding member main body 4a made of aluminum angle bar having a web portion 4a1 and a flange portion 4a2 and an L-shaped cross section, and resin end caps 4b, 4b (see Figure 2) provided on both the left and right ends of the vertical frame sheet holding member main body 4a, and are configured to have a length L2 that is shorter than the length L1 of each lower frame sheet holding member 3, 3.

[0020] The web portion 4a1 of the sheet holding member main body 4a for the vertical frame has a plurality of through holes 4a11 for the protrusions, which are aligned with the positions of a plurality of sheet mounting protrusions 1d provided at predetermined intervals on the vertical frame 1c, similar to the sheet holding member main body 3a for the lower frame.

[0021] The end caps 4b, 4b are configured similarly to the end caps 3b, 3b on both sides of the lower frame sheet retaining member 3, respectively.

[0022] In addition, the vertical frame sheet retaining members 4, 4 in this embodiment are not pre-attached to the waterproof sheet 2, but are installed independently on the sash frame 1 after the waterproof sheet 2 is installed on the sash frame 1, as described below.

[0023] (Waterstop sheet fixing member 5) As shown in Figures 9 and 10, the water-stop sheet fixing member 5 is made of molded resin and has a pressure plate portion 5a, a pair of triangular side plate portions 5b, 5b standing up from both the left and right sides of the pressure plate portion 5a, and an upper plate portion 5c arranged to overlap the pressure plate portion 5a and the upper ends of the pair of side plate portions 5b, 5b, and is formed in a triangular shape when viewed from the side.

[0024] The pressure plate portion 5a has a pressing surface portion 5a1 on the back side thereof that presses the web portions 3a1, 4a1 of the lower frame sheet pressing member 3 or the vertical frame sheet pressing member 4, and is provided with an inclined surface portion 5a2 on the back side thereof that gradually increases in height from the tip to the rear end of the water-stop sheet fixing member 5 and presses the water-stop sheet 2 against the lower frame 1b and the vertical frame 1c via the water-stop sheet fixing member 5 by a wedge effect, and a horizontal surface portion 5a3 that is continuous with the inclined surface portion 5a2, and a shaft passage groove portion 5a4 that extends from the tip of the pressure plate portion 5a through the inclined surface portion 5a2 to partway along the horizontal surface portion 5a3.

[0025] The shaft passage groove 5a4 has a width W3 (see Figure 9(c)) that is equal to or greater than the outer diameter R2 (see Figure 5(b)) of the shaft 1d2 of the seat mounting protrusion 1d but less than the outer diameter R1 of the head 1d3, and is configured to allow the shaft 1d2 of the seat mounting protrusion 1d to pass through but not the head 1d3 of the seat mounting protrusion 1d to pass through.

[0026] Next, the procedure for constructing the waterproof structure for a sash according to the first embodiment configured as described above in the sash frame 1 that constitutes a double sliding window will be described with reference to the drawings.

[0027] First, the outer and inner sliding screens 6a and 6b (see Figure 1) of the sliding window surrounded by the sash frame 1 are opened, and the water stop sheet 2, the sash frame sheet retaining members 3, the vertical frame sheet retaining members 4, the water stop sheet fixing members 5, etc. that make up the water stop structure of the sash of Embodiment 1 are taken out from their indoor and outdoor storage locations to the outside (outdoors). At this time, two separate sash frame sheet retaining members 3, 3 are attached in advance to the underside of the water stop sheet 2 as shown in Figure 7, and the water stop sheet 2 is stored wrapped around the separated sash frame sheet retaining members 3, 3. After taking out the water stop sheet 2 and the sash frame sheet retaining members 3, 3, the separated and folded sash frame sheet retaining members 3, 3 are spread out so that they are in a straight line on the outdoor side of the sash frame 1, and the water stop sheet 2 is also spread out.

[0028] The water-stopping sheet 2 and the sheet retaining members 3, 3 for the lower frame are provided with protrusion through holes 2a and protrusion through holes 3a11 through which the sheet mounting protrusions 1d that are provided in advance on the lower frame 1b and the left and right vertical frames 1c, 1c pass.As shown in Figure 11(a), the water-stopping sheet 2 is brought close to the lower frame 1b and the pair of left and right vertical frames 1c, 1c of the sash frame 1, and each of the sheet mounting protrusions 1d provided at predetermined intervals on the lower frame 1b of the sash frame 1 is passed through each of the protrusion through holes 2a opened on the left, right and lower ends of the water-stopping sheet 2.Then, as shown in Figure 11(b), the heads 1d3 of each sheet mounting protrusion 1d are protruded from the protrusion through holes 2a and protrusion through holes 3a11 of the water-stopping sheet 2 and the sheet retaining members 3 for the lower frame, and the water-stopping sheet fixing member 5 is inserted from above into the gap between the heads 1d3 of the sheet mounting protrusions 1d and the sheet retaining members 3, 3 for the lower frame.

[0029] Then, the shaft portion 1d2 of the sheet mounting protrusion 1d enters the shaft groove portion 5a4 from the tip of the pressure plate portion 5a of the water-stop sheet fixing member 5, passes through the shaft groove portion 5a4 provided on the inclined surface portion 5a2 where the thickness of the pressure plate portion 5a gradually increases, and reaches the horizontal surface portion 5a3 where the thickness of the pressure plate portion 5a is constant, and the water-stop sheet fixing member 5 stops as shown in Figures 4 and 5.

[0030] Here, when the sheet mounting protrusion 1d passes through the shaft passage groove 5a4 provided in the inclined surface portion 5a2, the thickness of the pressing plate portion 5a gradually increases due to the inclined surface portion 5a2, and the inclined surface portion 5a2 comes into contact with the back surface of the head portion 1d3 of the sheet mounting protrusion 1d, and the wedge effect of the inclined surface portion 5a2 presses the pressing plate portion 5a of the water-stop sheet fixing member 5 against the lower frame sheet pressing members 3, 3 and the water-stop sheet 2 toward the lower frame 1b.

[0031] Therefore, the waterproof material 2b provided on the back side of the waterproof sheet 2 is pressed against the lower frame 1b and shrinks, thereby improving the watertightness between the waterproof sheet 2 and the lower frame 1b.

[0032] On the other hand, since the vertical frame sheet retaining members 4, 4 are not pre-attached to either the left or right side of the waterstop sheet 2, first, as shown in Figure 12(a), the protrusion through holes 2a of the waterstop sheet 2 are brought close to the sheet mounting protrusions 1d of the vertical frame 1c, and as shown in Figure 12(b), the corresponding sheet mounting protrusions 1d of the vertical frame 1c are passed through the protrusion through holes 2a of the waterstop sheet 2, and then the vertical frame sheet retaining member 4 is brought close and each sheet mounting protrusion 1d is passed through its protrusion through holes 4a11. Although the vertical frame sheet retaining members 4 are not pre-attached to either the left or right side of the waterstop sheet 2, watertight material (packing) 2b is provided in advance as shown in Figures 12(a) and (b), so the work is carried out while checking that the watertight material 2b is in contact with the vertical frame 1c.

[0033] Then, as shown in Figure 12(c), after each sheet mounting protrusion 1d of the vertical frame 1c protruding from each protrusion through hole 2a of the water-stop sheet 2 has been passed through the protrusion through hole 4a11 of the vertical frame sheet holding member 4, the water-stop sheet fixing member 5 is inserted from above into the gap between the head 1d3 of the sheet mounting protrusion 1d and the vertical frame sheet holding member 4.

[0034] Then, as shown in Figures 6(a) and (b), the shaft portion 1d2 of the sheet mounting protrusion 1d enters the shaft groove portion 5a4 from the tip of the pressure plate portion 5a of the water-stop sheet fixing member 5, passes through the shaft groove portion 5a4 provided on the inclined surface portion 5a2 where the thickness of the pressure plate portion 5a gradually increases, and reaches the horizontal surface portion 5a3 where the thickness of the pressure plate portion 5a is constant, and the water-stop sheet fixing member 5 stops.

[0035] Therefore, when the sheet mounting projection 1d passes through the shaft groove 5a4 provided in the inclined surface portion 5a2, the thickness of the pressing plate portion 5a gradually increases due to the inclined surface portion 5a2, and the inclined surface portion 5a2 comes into contact with and presses against the back surface of the head portion 1d3 of the sheet mounting projection 1d, and the wedge effect of the inclined surface portion 5a2 allows the pressing plate portion 5a of the water-stop sheet fixing member 5 to press the vertical frame sheet pressing members 4,4 and the water-stop sheet 2 against the vertical frames 1c,1c, respectively, via the watertight material 2b on the back side thereof.

[0036] The sash frame 1 to which the waterproof structure of the sash of embodiment 1 is applied is a sliding sash in which the outer shoji 6a and inner shoji 6b move on rails 1b1 (see Figure 3) attached to the bottom frame 1b, and since the inner shoji 6b is recessed inside the room by the thickness of the outer shoji 6a and has a step, it is advisable to insert or sandwich a water pressure receiver such as an air bag (not shown) between the inner shoji 6b and the waterproof sheet 2.

[0037] As described above, the waterproof structure of the sash of embodiment 1 of the present invention has a shaft groove 5a4 with a width greater than or equal to the outer diameter of the shaft 1d2 of the sheet mounting protrusion 1d provided on the bottom frame 1b and the left and right vertical frames 1c, 1c and less than the outer diameter of the head 1d3, and is provided with a plurality of water-stop sheet fixing members 5 having pressing surface portions 5a1 that pass the shaft 1d2 of the sheet mounting protrusion 1d through the shaft groove 5a4 and press the overlapping portions of the water-stop sheet 2 with the sash frame 1 against the bottom frame 1b and the pair of left and right vertical frames 1c, 1c via the sheet holding member 3 for the bottom frame and the sheet holding member 4 for the vertical frames.

[0038] Therefore, the sheet mounting projections 1d provided on the bottom frame 1b and the pair of left and right vertical frames 1c, 1c that make up the sash frame 1 are passed through the projection through holes 2a provided in the water stop sheet 2, and the area between the bottom frame 1b and the pair of left and right vertical frames 1c, 1c up to a predetermined height is covered with the water stop sheet 2 from the outdoor side, and the overlapping parts of the water stop sheet 2 with the bottom frame 1b and the left and right vertical frames 1c, 1c are pressed down by the bottom frame sheet pressing member 3 and the vertical frame sheet pressing member 4, and further, the shaft through grooves 5a4 of the water stop sheet fixing member 5 are inserted through the sheet mounting projections 1d. The water-stop sheet fixing member 5 is inserted between the head 1d3 of the sheet mounting protrusion 1d and the sheet holding member 3 for the lower frame or the sheet holding member 4 for the vertical frame so that the shaft portion 1d2 passes through, and the pressing surface portion of the water-stop sheet fixing member 5 can press the overlapping portion of the water-stop sheet 2 with the sash frame 1 against the lower frame 1b and the pair of left and right vertical frames 1c, 1c via the sheet holding member 3 for the lower frame and the sheet holding member 4 for the vertical frame, respectively, so that the water-stop sheet 2 can be attached to the sash frame 1 without screwing in fastening members such as bolts and nuts.

[0039] In particular, in the waterproof structure of the sash of embodiment 1 of the present invention, the waterproof sheet fixing member 5 has, on the back side (opposite side) of the pressing surface portion 5a1, an inclined surface portion 5a2 whose height gradually increases from the tip to the rear end of the waterproof sheet fixing member 5, and a horizontal surface portion 5a3 continuous with the inclined surface portion 5a2, and the shaft passage groove portion 5a4 is formed in a tip opening shape so as to extend from the tip of the pressing plate portion 5a via the inclined surface portion 5a2 to the horizontal surface portion 5a3.

[0040] Therefore, when the sheet mounting protrusion 1d passes through the shaft groove 5a4 provided in the inclined surface portion 5a2, the thickness of the pressing plate portion 5a gradually increases due to the inclined surface portion 5a2, and the inclined surface portion 5a2 comes into contact with and presses against the back surface of the head portion 1d3 of the sheet mounting protrusion 1d, so that the wedge effect of the inclined surface portion 5a2 can press the pressing plate portion 5a of the water-stop sheet fixing member 5 against the vertical frame sheet holding members 4,4 and the water-stop sheet 2 toward the vertical frames 1c,1c, respectively, thereby reliably preventing water from entering the room through the sash opening.

[0041] In addition, in the waterproof structure of the sash of embodiment 1 of the present invention, the waterproof sheet fixing member 5 has a pressure plate portion 5a having an inclined surface portion 5a2, a horizontal surface portion 5a3 and an axis portion passing groove portion 5a4, a pair of side plate portions 5b, 5b standing upright on both the left and right sides of the pressure plate portion 5a, and an upper plate portion 5c arranged to overlap the upper end of the pressure plate portion 5a and the upper ends of the pair of side plate portions 5b, 5b.

[0042] Therefore, the top and bottom of the water-stop sheet fixing member 5 are clearly defined, and it is possible to insert the water-stop sheet fixing member 5 by pressing the upper plate portion 5c, which also makes it possible to quickly attach the water-stop sheet 2 to the sash frame 1.

[0043] In addition, in the waterproof structure of the sash of embodiment 1 of the present invention, the two divided lower frame sheet holding members 3, 3 are formed in a divided form, and are attached to the water-stopping sheet 2 in advance with double-sided tape, adhesive, etc., by matching the through hole 3a11 for the protrusion with the through hole 2a for the protrusion of the water-stopping sheet 2, and the length L1 of each of the two divided lower frame sheet holding members 3, 3 is greater than the length L2 of the vertical frame sheet holding member 2.

[0044] Therefore, when storing the waterstop sheet 2, the lower frame sheet retaining members 3,3, and the vertical frame sheet retaining members 4,4, etc., the waterstop sheet 2 is rolled or folded together with the lower frame sheet retaining members 3,3, and stored together with the vertical frame sheet retaining members 4,4 that are not pre-attached to the waterstop sheet 2. In this case, since the length L1 of each lower frame sheet retaining member 3,3 is greater than the length L2 of the vertical frame sheet retaining members 4,4, even if, for example, the divided lower frame sheet retaining members 3,3 are overlapped at their intersections and the waterstop sheet 2 is folded in half and wrapped around, the waterstop sheet 2 and the overlapped lower frame sheet retaining members 3,3 will be slightly longer than the length L1, so by sandwiching the vertical frame sheet retaining members 4,4 of length L2 between the waterstop sheet 2 and the overlapped lower frame sheet retaining members 3,3, the vertical frame sheet retaining members 4,4 can be stored together efficiently without being lost or scattered.

[0045] Embodiment 2. The waterproof structure of the sash of embodiment 2 is characterized in that a pressure change portion is provided in the water-stop sheet fixing member so that the water-stop sheet 2 can be securely attached to the sash frame 1 using the water-stop sheet fixing member, and the pressure change portion changes when the shaft portion 1d2 of the sheet attachment protrusion portion 1d passes through the shaft passing groove portion 5a4 and reaches the horizontal surface portion 5a3 from the inclined surface portion 5a2.

[0046] 13(a) to 13(d) are a plan view, a perspective view, a front view, and a side view, respectively, of a water stop sheet fixing member 5' that constitutes the water stop structure for a sash of the second embodiment.

[0047] The water-stop sheet fixing member 5' of embodiment 2 has a pressure plate portion 5a, a pair of triangular side plate portions 5b, 5b, and an upper plate portion 5c, similar to the water-stop sheet fixing member 5 of embodiment 1 described above, and the pressure plate portion 5a has an inclined surface portion 5a2', a horizontal surface portion 5a3' continuing from the inclined surface portion 5a2', and an axial portion passing groove portion 5a4' extending from the tip of the pressure plate portion 5a' through the inclined surface portion 5a2' to halfway up the horizontal surface portion 5a3'.

[0048] In the watertight sheet fixing member 5' of embodiment 2, as shown in Figures 13(a) to (d), the width of the shaft portion passing groove 5a4' gradually narrows near the boundary between the inclined surface portion 5a2' and the horizontal surface portion 5a3', and the shaft portion passing groove 5a4' has a triangular vertex 5a51' that protrudes from each of the inclined surface portion 5a2' and the horizontal surface portion 5a3' toward the center of the shaft portion passing groove 5a4' when viewed from the front, and a triangular convex portion 5a5' is provided as a pressing force changing portion where the pressing force changes when the shaft portion 1d2 of the sheet mounting projection 1d passes through the shaft portion passing groove 5a4' and reaches the flat surface portion 5a3' from the inclined surface portion 5a2'.

[0049] Therefore, according to the water-stop structure of the sash of embodiment 2, which uses the water-stop sheet fixing member 5', when the water-stop sheet fixing member 5' is inserted from above into the gap between the head 1d3 of the sheet mounting protrusion 1d and the vertical frame sheet holding members 4, 4, the same effect as the water-stop structure of the sash of embodiment 1 above is obtained, and due to the triangular convex portion 5a5' provided on the water-stop sheet fixing member 5', when the shaft portion 1d2 of the sheet mounting protrusion 1d passes through the shaft passing groove 5a4' and reaches the flat portion 5a3' from the inclined surface portion 5a2', the pressing force changes and a clicking sensation is felt, and it is possible to confirm that the water-stop sheet fixing member 5' has reached the flat portion 5a3' by the spacing of the hand pressing in, etc., so that the water-stop sheet 2 can be attached to the sash frame 1 reliably and quickly, and water can be more reliably and quickly prevented from entering the room through the sash opening.

[0050] In particular, in the water-stop sheet fixing member 5' of embodiment 2, a triangular protrusion 5a5' is provided as a pressure-changing portion that protrudes in a triangular shape. Therefore, when the shaft portion 1d2 of the sheet mounting projection 1d passes through the shaft groove 5a4', crosses the vertex 5a51', and reaches the flat portion 5a3' from the inclined surface portion 5a2', the inclined surface of the triangular protrusion 5a5' prevents the sheet mounting projection 1d from returning to the inclined surface portion 5a2', preventing the water-stop sheet fixing member 5' from falling off, so that the water-stop sheet 2 can be more securely attached to the sash frame 1.

[0051] In the above description of the embodiment, the waterproof structure of the sash according to the present invention has been described using as an example a sliding sash frame 1 in which an outer shoji screen 6a and an inner shoji screen 6b intersect, but the present invention is not limited to this, and may of course be adopted in a rotating sash frame in which the shoji screen (including the door) rotates around a fulcrum to open and close, or a lifting sash frame in which the shoji screen rises and falls.

[0052] Furthermore, in the description of the above embodiment, the seat mounting protrusions 1d provided at predetermined intervals on the lower frame 1b and the pair of left and right vertical frames 1c, 1c are constructed using shoulder screws, but the present invention is not limited to this, and it is of course also possible to provide the seat mounting protrusions integrally with the lower frame 1b and the pair of left and right vertical frames 1c, 1c.

[0053] In addition, in the description of this embodiment, it has been explained that the sheet holding members 3,3 for the lower frame are attached to the water-stop sheet 2 in advance, but the present invention is not limited to this, and the sheet holding members 4,4 for the vertical frame may be attached to the water-stop sheet 2 in advance, and the sheet holding members 3,3 for the lower frame may be prepared independently of the water-stop sheet 2, or of course both the sheet holding members 3,3 for the lower frame and the sheet holding members 4,4 for the vertical frame may be prepared independently of the water-stop sheet 2. [Explanation of symbols]

[0054] 1 sash frame 1a Upper frame 1b Bottom frame 1b1 rail 1c vertical frame 1D Glass 1d Seat mounting protrusion 1d1 screw part 1d2 shaft 1d3 heads 2. Waterproof sheet 2a Through hole for protrusion 3 Lower frame sheet retainer 3a Vertical frame sheet retainer body 3a1 Web Department 3a11 Through hole for protrusion 3a2 flange 3b End cap 4 Sheet retaining member for vertical frame 4a Vertical frame sheet retainer body 4a1 Web Section 4a11 Through hole for protrusion 4a2 flange 4b End cap 5,5' Waterproof sheet fixing material 5a, 5a' pressure plate 5a1, 5a1' pressing surface 5a2,5a2' Slope section 5a3,5a3' Horizontal part 5a4, 5a4' Shaft through groove 5b,5b' Side plate part 5c,5c' upper plate 6a Outer Shoji Screen 6b Inner Shoji Screen

Claims

1. a sash frame having an upper frame, a lower frame, and a pair of left and right vertical frames, the sash frame having a shaft portion protruding to the outdoors at a predetermined interval between the lower ends of the lower frame and the pair of left and right vertical frames to a predetermined height, and a sheet mounting projection having a head portion with a diameter larger than that of the shaft portion; a waterproof sheet disposed between the lower frame and a predetermined height of the pair of left and right vertical frames so as to cover at least a portion of the sash opening surrounded by the sash frame from the outdoor side, the waterproof sheet having protrusion through holes through which the sheet mounting protrusions are passed; a lower frame sheet pressing member that has a through hole for a protrusion through which the sheet mounting protrusion provided on the lower frame passes, and that sandwiches and presses the lower frame overlapping portion of the water-stop sheet that overlaps the lower frame between the lower frame and the water-stop sheet; a sheet pressing member for the vertical frame, which is provided with a through hole for a projection portion through which the sheet mounting projection portion provided on each of the left and right vertical frames passes, and which sandwiches and presses the vertical frame overlapping portion of the water stop sheet that overlaps each of the vertical frames between the vertical frame and each vertical frame; a water stop sheet fixing member provided with a shaft portion-through groove through which the shaft portion of the sheet mounting projection passes but not the head portion, and a pressing surface portion through which the shaft portion of the sheet mounting projection passes through the shaft portion-through groove and which presses the overlapping portion of the water stop sheet with the sash frame against the lower frame and a pair of left and right vertical frames via the lower frame sheet pressing member and the vertical frame sheet pressing member; A waterproof structure for a sash, comprising:

2. The waterproof structure for a sash according to claim 1, The waterstop sheet fixing member is The back side of the pressing surface portion has an inclined surface portion whose height gradually increases from the front end to the rear end of the water stop sheet fixing member, and a horizontal surface portion continuous with the inclined surface portion, A waterproof structure for a sash, characterized in that the shaft groove portion is formed in a tip opening shape from the tip of the water-stop sheet fixing member through the inclined surface portion to the horizontal surface portion.

3. The waterproof structure for a sash according to claim 2, The waterstop sheet fixing member is a pressure plate portion provided with the pressure surface portion, the inclined surface portion, the horizontal surface portion, and the shaft portion through-groove portion; a pair of side plate portions standing upright on both the left and right sides of the pressing plate portion; A waterproof structure for a sash, characterized in that it has an upper plate portion provided above the side plate portion.

4. The waterproof structure for a sash according to claim 2, The lower frame sheet pressing member is formed in a divided form and is attached to the water stop sheet in advance by aligning the projection through hole of the lower frame sheet with the projection through hole of the water stop sheet, A waterproof structure for a sash, characterized in that the length of the divided sheet holding member for the lower frame is greater than or equal to the length of the sheet holding member for the vertical frame.

5. The waterproof structure for a sash according to claim 1, A water-stopping structure for a sash, characterized in that a pressure-changing portion is provided around the shaft groove portion of the water-stopping sheet fixing member, in which the pressure changes when the shaft portion of the sheet mounting protrusion passes through the shaft groove portion from the inclined surface portion to the horizontal surface portion due to the water-stopping sheet fixing member being pressed and urged.

6. A waterproof sheet fixing member that covers at least a part of a sash opening surrounded by a sash frame having an upper frame, a lower frame, and a pair of left and right vertical frames from the outdoor side and presses the waterproof sheet against the lower frame and the pair of left and right vertical frames via a lower frame sheet pressing member and a vertical frame sheet pressing member, a shaft-through groove through which the shaft of a sheet mounting projection having a shaft and a head is passed but not the head, the shaft-through groove being provided at a predetermined interval between the lower ends of the lower frame and the pair of left and right vertical frames and projecting to the outdoor side up to a predetermined height; A waterproof sheet fixing member characterized by having a pressing surface portion that, when inserted between the head of the sheet mounting protrusion and the lower frame sheet holding member or the vertical frame sheet holding member, passes the shaft portion of the sheet mounting protrusion through the shaft passing groove and presses against the lower frame and each of the pair of left and right vertical frames via the lower frame sheet holding member and the vertical frame sheet holding member.

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