JPH0111910Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a watertight device for the lower frame of a sash, and more specifically, it prevents rainwater from entering due to wind pressure by the pressure caused by the water level of rainwater that has entered the lower frame, This invention relates to an improvement of a watertight device for the lower frame of a sash whose purpose is to prevent rainwater from entering the room.

The watertight system in general sliding type satsushi is as follows:
There are two types: pull type and water level balance type. In this case, the former, that is, the pull type, is a method in which the shoji is pulled to the window frame, and the tight material interposed between the shoji and the window frame comes into close contact with each other to prevent rainwater from entering the lower frame. The latter, that is, the water level balance type, is a system in which the water pressure of rainwater or the like that has entered the lower frame prevents the infiltration of rainwater due to wind pressure.

As shown in FIGS. 1 and 2, a conventionally known water level balance type is one in which a part c having a check valve b is provided at the lower part of the center stile of the lower stile a. There is. That is, in this type of watertight device, the part c, which also serves as a casing equipped with a check valve b that opens only to the outside, is opened between the indoor and outdoor rails d and e, thereby sealing the interior of the outside shoji f. Rainwater, etc. that have entered the inside are discharged to the outside through a notch g formed in the outdoor rail e.

By configuring as above, during rainy weather accompanied by wind, due to the pressure difference between wind pressure and indoor air pressure,
The rainwater that has entered the indoor side through the packing i interposed between the inner and outer shoji f', f and the lower frame h is collected by the rising indoor wall j of the lower frame h and the check valve b to a certain water head H. The water pressure can be used to improve watertightness. In other words, since the wind pressure causes pulsations, if there is no check valve b, water will enter the lower frame h from the packing i due to the pressure difference between the wind pressure near the maximum wind pressure and the indoor air pressure, and the water level will rise. By providing the check valve b, the rainwater in the lower frame h is discharged outdoors when the pulsating wind pressure is low, so the height of H at which the water level becomes stable can be lowered.

However, since the structure described above has a drainage port near the bottom plate of the lower frame h, when the wind pressure is high during windy weather, the discharged rainwater closes the check valve b. When the packing i is pushed open, rainwater infiltrates into the lower frame h, and there is a risk that the amount of infiltration will reach a water level exceeding the indoor rising wall j. Furthermore, the upper surface of the lower frame is a place where dust tends to accumulate, and the dust accumulated on the lower frame is discharged from the check valve, making it difficult to maintain the functionality of the check valve over a long period of time. Therefore, the indoor rising wall j had to be made higher than necessary. In addition, in order to attach the part c having the check valve b, it is necessary to perform special processing on the lower frame h, and furthermore, there are problems in that it is difficult to attach it to an existing sash.

This invention was made with the intention of solving the above problem, and its purpose is to utilize the water pressure of rainwater etc. that has entered the bottom frame without applying any processing to the bottom frame. The purpose of this invention is to provide a watertight device for the lower frame of the sash that can improve watertight performance and stabilize the water level. A tight material is used to isolate the indoor and outdoor areas, and a notch is drilled in the lower sill of the shoji, located directly above the tight material, to communicate the indoor and outdoor spaces. It is equipped with a check drain valve that drains water that has entered the outside and prevents rainwater from entering from the outside.

Examples of this invention will be described below with reference to FIGS. 3 to 5.

Fig. 3 is a sectional view showing the structure of the watertight device of this invention. In the figure, 1 is a sash lower frame formed of an extruded aluminum profile, and the lower frame has a stepped shape that becomes lower toward the outdoor side. An indoor rail part and an outdoor rail part 4 are provided upright on the bottom plate part 2, and an indoor side rising wall 5 is provided upright at the indoor end. Then, the indoor/outside rail portions 3, 4 of this sash lower frame 1
An inner shoji 6 and an outer shoji 7 are each fitted with a door roller (not shown) so that they can be opened and closed. In this case, tight material mounting grooves 8, 8 are formed on the inner surface of the lower ends of the indoor and outdoor sides of the lower frames 6a, 7a of the inner and outer shoji 6, 7, and the tight material is fitted into these mounting grooves 8, 8, respectively. By bringing the tight members 9, 9 into close contact with the outer surfaces of the indoor rail portion 3 or the outdoor rail portion 4, the indoor and outdoor areas are isolated.

Further, a notch 10 as shown in FIGS. 3 and 4 is bored in the vicinity of the tight material 9 in the lower stile 6a or 7a, and this notch 10 has a A check drain valve 11 is installed to discharge rainwater etc. A that has entered and stagnated in the frame 1 to the outdoor side and to prevent rainwater from entering from the outdoor side. In this case, the check drain valve 11 has its upper portion fixed to a hinge 12 provided at the upper edge of the notch 10 and a movable piece 12a of this hinge 12, as shown in FIG. Closing plate 1 that opens only to the outside of the room
It is composed of 3. Note that the gap between the notch 10 and the closing plate 13 is closed by watertight fins 14 made of soft synthetic resin attached to the four circumferences of the closing plate 13.

In the watertight device of this invention constructed as described above, rainwater etc. infiltrates into the lower frame 1 from the tight material 9 part due to the differential pressure between the outdoor wind pressure and the indoor air pressure. 5 prevents it from entering the room. That is, since the check drain valve 11 is located above the tight member 9, the function of the check drain valve 11 is not hindered by the drained rainwater, and the rainwater can be drained smoothly.
As a result, the water level is stabilized at a height H that is approximately the difference between the average pressure of pulsations caused by wind pressure and the indoor pressure. As a result, the water level H is lowered, so that the watertight performance can be improved and the height of the indoor rising wall 5 can be lowered.

As explained above, according to the watertight device of this invention, rainwater that has entered the bottom frame can be drained smoothly, and watertightness can be improved at stable low water levels. Since the watertight function can be improved, the height of the rising wall on the indoor side of the lower frame can be reduced, that is, the number of members can be reduced. Furthermore, it is possible to prepare two types of sashes, one with a check-drain valve and one without, and use the sashes with different performance, so it is possible to change the watertight performance depending on the purpose. Furthermore, it has excellent effects such as being able to be easily attached to existing sashes, so its utility value is remarkable.

[Brief explanation of the drawing]

FIG. 1 and FIG. 2 are a schematic plan view and a sectional view taken along the - line, respectively, showing a conventional watertight device;
FIG. 3 is a sectional view showing the structure of the watertight device of this invention, FIG. 4 is a perspective view of the lower stile of a shoji screen in this invention, and FIG. 5 is a sectional view of a check drain valve in this invention. In the figure, 1...Sash bottom frame, 2...Bottom frame bottom plate part, 3...Inner rail part, 4...Outer rail part, 5
... Indoor rising wall, 6... Inner shoji, 6a... Shoji lower stile, 7... Outer shoji, 7a... Shoji lower stile, 8...
... Tight material mounting groove, 9 ... Tight material, 10 ... Notch opening, 11 ... Check drain valve, 12 ... Hinge, 1
3...Closing plate, 14...Watertight fin.

Claims (1)

[Scope of utility model registration request] A tight material is interposed between the sash lower frame and the shoji lower stile to shut off the indoors and outdoors, and the shoji lower stile is
A notch is provided directly above the tight material to communicate between the indoor and outdoor areas, and this notch is provided to drain water that has entered the outdoor area and to prevent rainwater from entering from the outdoor area. A watertight device for the lower frame of the sash, which is equipped with a check drain valve to prevent water leakage.