JPH0525992B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a watertight device for a sash window in which a sliding shoji is slidably attached to a window frame whose lower frame is formed in a stepped shape.

(Prior Art) Conventionally, window frames have been constructed of a window frame framed by an upper frame, a lower frame, and vertical frames integrated on the left and right sides, and a sliding shoji with an inner and outer frame that is slidably attached to the window frame. For sash windows that are fitted into openings for installation in houses, synthetic rubber or vinyl chloride is generally used as the airtight material at the bottom of the sash (upper and lower frames), and the airtightness, dustproofness, etc. In order to improve this, the mounting structure is such that the airtight material is in close contact with the mating material (bottom frame).

(Problems to be Solved by the Invention) As described above, in the case where the watertightness and dustproofness are improved, there is a problem that drainage of rainwater, etc. accumulated in the plate part of the lower frame of the window frame becomes poor. For this purpose, water can be drained by providing a space between the airtight material attached to the lower rung of the outer shoji and the dish plate, or by partially cutting off a part of the airtight material attached to the lower rung. was doing well.

However, there has been a problem in that improving water drainage significantly reduces the watertightness and dustproofness of the lower frame and the lower crosspiece, and improving watertightness and dustproofness leads to poor drainage.

Therefore, the present invention has been made in view of the above-mentioned conventional problems, and provides a watertight device that can improve the drainage performance of rainwater accumulated in the plate portion without impairing the watertightness or dustproof performance. The purpose is to

(Means for Solving the Problems) Therefore, the present invention provides an interior and exterior structure that is constructed by framing an upper frame, a lower frame, and left and right vertical frames for a window frame framed by an upper frame, a lower frame, and left and right vertical frames. In a satsui window made by slidably attaching a sliding shoji, the lower frame is formed by forming a board with guide rails for guiding the inner shoji and the outer shoji in the form of steps that increase in height from the outdoor side to the indoor side. , a tall rainwater shielding wall with a stepped part halfway along the entire length in the longitudinal direction between the outer shoji guide rail and the inner shoji guide rail is plated by the outer shoji guide rail, the rainwater shielding wall, and the substrate. At the same time, the bottom rung of the inner shoji of the above-mentioned sliding shoji is made of non-permeable airtight material that closely adheres to the rainwater blocking wall of the lower frame of the window frame and blocks air from inside and outside, and the bottom rung of the outer shoji is coated with a non-permeable airtight material. The intended purpose is achieved by attaching a permeable airtight material that contacts the lower frame of the window frame and allows drainage of water.

(Example) A is a sash window made of an extruded aluminum alloy material, and includes a window frame a that is attached to a house attachment opening B, an inner sash b that is slidably attached to the window frame a, and an outer sash window. It is composed of a sliding shoji (shoji c) and a sliding shoji (sliding shoji).

Window frame a has an upper frame 11, a lower frame 12, and left and right vertical frames 1
3 and 14, on the upper surface of the lower frame 12 on the indoor side there is a guide rail 16 on which the door roller 15 of the inner shoji b rolls, and on the upper surface of the outdoor side there is a guide rail 16 on which the door roller 17 of the outer shoji c rolls. Rails 18 are respectively formed. Both ends of the guide rail 18 on the outdoor side are cut out to remove rainwater, dust, etc. accumulated on the plate portion 19 of the lower frame 12.

By the way, the lower frame 12 forming the window frame a is
It is located between the guide rails 16 and 18 that guide at least the inner and outer shoji b and c, and the lower frame 12
It is formed in a step-like shape that gradually increases in height from the outdoor side to the indoor side so as to have a tall rainwater blocking wall W with a step M in the middle over the entire longitudinal width. The rainwater blocking wall W of the embodiment has a stepped portion M formed by bending the upper part of the inner wall 19a provided over the entire longitudinal width of the dish plate portion 19 toward the indoor side, and the bent end side is the upper wall surface of the lower frame. 12a, and a tall rainwater blocking wall W is formed between the guide rails 16 and 18 by the inner wall 19a of the dish plate part 19, the stepped part M, and the lower frame upper wall surface 12a. Rainwater, etc. accumulated in the plate plate part 19 is prevented from entering the indoor side by the plate plate part inner side wall 19a, and even if rainwater hits the stepped part M etc. during windy weather, etc., it is connected to the stepped part M. Since it is blocked by the lower frame upper wall surface 12a, it is prevented from entering the indoor side. Further, the inner wall 19a of the plate plate portion 19 is formed to be substantially flush with the outer surface of the lower crosspiece 22 of the inner shoji b as shown in the figure.
Consideration has been given to making it easy to clean the dust etc. In addition, the presence of the rainwater blocking wall W prevents rainwater from entering the indoor side beyond the guide rail 16 on the inner shoji screen, so that the indoor side rising wall 1
The amount of upward protrusion of 2c can be set to be as small as possible, so it can be applied not only to small windows and high windows, but also to installations in places where people enter and exit, such as entrances and hallways. 12b is a lower wall surface of the lower frame.

The inner shoji b and the outer shoji c have upper crosspieces 20, 21, upper crosspieces 22, 23, and left and right vertical crosspieces 24, 25, 26, 2, respectively.
7, and inside the upper frames 20 and 21, there are lip portions 28a and 29 that abut against the flange portions 11a and 11b of the upper frame 11 of the window frame a, respectively.
Airtight members 28 and 29 made of rubber or vinyl chloride containing a. Also, among the left and right vertical bars of the inner shoji b and outer shoji c, the vertical bars 24 and 27 on the door stop side are coated with rubber or vinyl chloride containing rubber or vinyl chloride, which contact the left and right window frames 13 and 14 of the window frame a, respectively. weather strips 30 and 31, and an airtight material 32 having lip portions 32a and 33a that abut against the flange portions 13a and 13b of the vertical bars 13 and 14,
33 is installed.

The lower frame 12 of the opening edge of the lower frame 22 of the inner shoji b
On the inner edge facing the upper wall surface 12a, there is a wall located above the stepped portion M of the rainwater blocking wall W.
Lip portions 34a, 3 that are in close contact with and block air from inside and outside
4b, an impermeable airtight material 34 made of synthetic rubber or vinyl chloride is attached. Further, on the inner edge of the opening edge of the lower frame 23 of the outer shoji c that faces the lower wall surface 12b of the lower frame 12, the lower wall surface 1
A permeable airtight material 35 made of a synthetic resin material or synthetic fiber that is in contact with 2b and is drainable is attached.

Here, the permeable airtight material 35 includes, for example, a belt made of rough and hard long fibers such as mohair, woven into a napped shape, and a resin belt made of synthetic fibers. These have the property that they largely prevent dust from entering from the outside, but allow rainwater and the like to enter and exit with relative ease.

In addition, as another embodiment of the present invention, as shown in FIG.
Instead of being made of synthetic rubber or resin such as vinyl chloride, mohair 37 with a core 36 may be used. Moreover, instead of mohair, the airtight material attached to the lower crosspiece 23 of the outer shoji c may be replaced by a resin band material flocked with synthetic fibers (not shown). 3
8 is a window glass fitted into the inner shoji b, and 39 is a window glass fitted into the outer shoji c. 4
Reference numerals 0 and 41 designate substrates representing substantially horizontal portions of the lower frame 12 that are connected to the base ends of the inner shoji guide rail 16 and the outer shoji guide rail 18, respectively. Also,
There are the results of the applicant's in-house tests of a conventional test specimen and a product implementing the present invention.

Prepare test specimen 1, one with non-permeable airtight material attached, and test specimen 2, one with permeable airtight material attached to the outer shoji bottom rungs, and test them according to JIS A1517 (Watertightness test method for fittings).
Watertightness was tested according to JIS A4706 (aluminum alloy and steel sashes), class 25. Here, test specimen 1 is a conventional example, and test specimen 2 is the invention of the present application.

As a result of the test, the water level in test specimen 1 was 30 mm or more from the 19 plate plate portion on the inside of the outer shoji of the present invention in Fig. 1, and water overflowed to the indoor side of the lower frame. On the other hand, test specimen 2 is 20 mm from the same 19 plate plate part.
The water level reached 25mm. Then, test specimen 1 failed the standard, and test specimen 2 passed the standard.
By the way, the range of values is 12kgf/ ^M2 to 38Kgf/in a 2 second cycle in the case of the 25th class water tightness test.
This is because the water level fluctuates in response to changes in the atmospheric pressure ^outdoors . Before considering the causes of this difference between the two, the causes of water intrusion into this type of Satsushi are generally: 1. Gravity 2. Surface tension 3. Capillary action 4. Kinetic energy 5. Air flow (pressure difference) Five are listed.

With these five causes in mind, we observed the test and will explain what we found below.

When looking at the satsushi from the outside front, there are two types of water that enters: one that enters from the bottom of the inner shoji and the other that enters from the bottom of the outer shoji.
The path of water entering from the bottom of the internal shoji should be further divided into the spaces between the 34 airtight materials at the bottom of the internal shoji and the bottom frame, the space between the door edge stile and the vertical frame, and the space between the sills. Similarly, the path of water entering from the bottom of the outer shoji includes the space between the 35 airtight materials at the bottom of the outer shoji and the bottom frame, the space between the door stile and the vertical frame, and the space between the sashes. Each can be divided into

Of these, for both the inner and outer shoji, the gaps between the door stile and the vertical frame, and the gaps between the sills were so tight that it was almost impossible for water to get in and out. Here, test specimen 2, which is a product implementing the present invention,
When observing the flow of water, it is found that water that enters from the bottom of the outer shoji and water blown from outside is water that has flowed down below the permeable airtight material 35 between the lower frame and the lower frame of the outer shoji. constantly forms a film, and water infiltrates due to the pressure difference between the inside and outside, and the plate part 1
9, water gradually accumulated and when it reached a predetermined height, it was only displaced in response to the pulsations of the outside air pressure. At that time, the sound of a considerable amount of air bubbles being continuously generated was heard between the guide rail 18 of the outer shoji and the transparent airtight material 35, which could not be seen from the outside.

In addition, most of the water that hit the outdoor glass of the inner shoji flowed down the outdoor side of the lower crosspiece 22 and the inside wall 19a of the plate part, and fell to the outside of the sash. Water enters between the impermeable airtight material and the lower frame, accumulates between the indoor side of the lower frame 22 and the indoor side rising wall 12c, and the water reaches the area of the outer shoji of the lower frame. It flowed sideways and flowed into the tray plate part 19 on the inside of the outer shoji room.

Similarly, in test specimen 1, which is a conventional example, the movement of water infiltrating from the lower part of the inner shoji and the lower part of the outer shoji was the same, but as described above, the water that accumulated on the plate part 19 on the inside of the outer shoji was As time passed, the water level increased and eventually overflowed beyond the top of the bottom frame.

Before considering the causes of the above differences, the physical reasons for water entering from the bottom of the outer shoji and water entering from the bottom of the inner shoji are two of the five reasons listed at the beginning. It is thought that tension, 3. capillary action, 4. kinetic energy, and 5. airflow (pressure difference) are the influences. Of these, 4. Kinetic energy, that is, the direction of the rain hitting the inlet, is the same for both test specimens 1 and 2.
For other reasons, test specimen 1 and specimen 2
There was a difference.

In test specimen 1 (conventional example), the water inside the inner shoji tries to flow through the frame and into the plate part 19 on the indoor side of the outer shoji regardless of the pulsation cycle, but the airtight material of the lower sill of the outer shoji However, since it is non-permeable, the water level in test specimen 2 (the product implementing the present invention) is not stable, and the water that cannot be completely drained overflows.

In test specimen 1 (conventional example), the outer shoji lower rung and lower frame are covered with non-permeable airtight material, which causes capillary action, and due to surface tension, a thick film is formed, preventing air from entering the shoji. becomes more difficult to penetrate. Therefore, there is no energy dispersion, and the flat plate part 1 located inside
This is thought to be reflected in the height of the puddle above 2.

On the other hand, in test specimen 2 (product implementing the present invention), the outer shoji lower frame and the lower frame are permeable, and the gap is large, making it difficult for capillary phenomena to occur, resulting from the difference in pressure between the inside and outside. Since energy is also generated in the form of bubbles, it is considered that the water is dispersed and the height of the puddle on the flat plate portion 12 is clearly lower than that of the test specimen 1.

In extreme terms, if you remove the airtight material at the bottom of the outer shoji lower frame, the water level may be lower than if you added permeable airtight material. However, this cannot be carried out because the airtight performance would be below the standard.

As described above, the key point of the present invention is to make it possible to improve the watertight performance by using a device that at first glance would seem to merely degrade the airtightness.

(Function) With the above-mentioned configuration, rainwater entering the window frame a from the outside is directed to the inner side of the plate part 19, which is located between the inner and outer guide rails 16 and 18 and extends over the entire width in the longitudinal direction of the plate part 19. Since it is blocked by the wall 19a, it is prevented from entering the indoor side. During wind and rain, even if rainwater hits the stepped portion M adjacent to the upper end of the inner wall 19a and attempts to further infiltrate the indoor side, the stepped portion M
The non-permeable airtight material 3 that is in close contact with the lower frame upper wall surface 12a is connected to the lower frame upper wall surface 12a.
Combined with the watertight effect provided by 4, infiltration of rainwater is effectively prevented. In this way, the rainwater blocking wall W plays the role of a waterproof wall that blocks rainwater in front of the indoor guide rail 16, so that the watertight effect of the window frame a is greatly enhanced. On the other hand, even in the part where the outer shoji c is located, there is less rainwater etc. intruding between the outer shoji lower frame and the lower frame than in the conventional example.
Rainwater etc. accumulated in the outer shoji 9 is discharged through the permeable airtight material 35 attached to the lower frame 23 of the outer shoji c. Further, most of the dust and the like from the outside are blocked by the permeable airtight material.

(Effects of the Invention) As described above, according to the present invention, for a window frame framed by an upper frame, a lower frame, and left and right vertical frames, the upper frame, the lower frame, and the left and right vertical frames are framed. In a satsui window made by slidingly attached inner and outer sliding shoji, the lower frame is formed by making the board with guide rails that guide the inner and outer shoji into a step-like shape that gradually increases in height from the outdoor side to the indoor side. A tall rainwater blocking wall is formed with a stepped part in the middle over the entire length in the longitudinal direction between the outer shoji guide rail and the inner shoji guide rail. Since we have installed a non-permeable airtight material that tightly adheres to the rainwater barrier of the frame and blocks air from inside and outside, the blocking action of the rainwater barrier prevents rainwater from entering the window frame on the outside of the inner shoji screen, which is away from the indoor side. Therefore, in conjunction with the airtight effect of the non-permeable airtight material provided on the lower rung of the inner shoji, it is possible to reliably prevent the shoji from entering the indoor side.

In addition, a tall rainwater shielding wall with a stepped part halfway across the entire lengthwise width between the outer shoji guide rail and the inner shoji guide rail is constructed using the outer shoji guide rail, the rainwater shielding wall, and the substrate. At the same time, the lower rungs of the outer shoji are fitted with permeable airtight materials that contact the lower frame of the window frame and allow drainage, reducing the amount of rainwater that enters between the outer shoji lower rungs and the lower frame. In addition, it is possible to set the depth of rainwater that has entered the dish plate portion to a depth that maintains the water pressure and the external pressure in equilibrium, and the excess rainwater that has entered can be appropriately drained.

Further, most of the dust and the like from the outside are blocked by the permeable airtight material attached to the lower rung of the outer shoji and the non-permeable airtight material attached to the lower rung of the inner shoji.

In this way, the dust-proof performance and the water-drainage performance of the lower frame, which may seem contradictory at first glance, can be achieved at the same time, and the water-tight performance can be improved.

[Brief explanation of drawings]

Fig. 1 is a partially enlarged vertical cross-sectional view of a sash window equipped with a watertight device according to the present invention, Fig. 2 is a longitudinal sectional view of the same sash window, Fig. 3 is a cross-sectional view of the sash window, and Fig. 4 is a longitudinal sectional view of the same sash window.
The figure is a partially enlarged vertical sectional view of a sash window showing another embodiment of the present invention. A is a sash window, a is a window frame, b is an inner shoji, c is an outer shoji, 12 is a lower frame, 19 is a plate part, 22, 23 are lower rails, 34 is a non-permeable airtight material, 35 is a transparent material 40 and 41 are substrates, and W is a rainwater barrier.

Claims (1)

[Claims] 1. A sash made by slidably attaching inner and outer sliding shoji, which are made up of an upper frame, a lower frame, and left and right vertical frames, to a window frame that is framed by an upper frame, a lower frame, and left and right vertical frames. In a window, a board provided with a guide rail for guiding the inner shoji and the outer shoji is formed into a step-like shape that gradually increases from the outdoor side to the indoor side to form the lower frame, and the longitudinal length between the outer shoji guide rail and the inner shoji guide rail is A tall rainwater shielding wall with a stepped part in the middle spanning the entire width of the sliding shoji is formed by the outer shoji guide rail, the rainwater shielding wall, and the base plate to form a plate part. The bottom rung of the shoji is made of non-permeable airtight material that adheres to the rainwater barrier at the bottom frame of the window frame and blocks air from inside and outside, while the bottom rung of the outer shoji is made of permeable material that touches the bottom frame of the window frame and allows drainage. A watertight device for a satsushi window characterized by each piece being equipped with a waterproof airtight material.