JP2003328651A - Waterproofing structure of sash frame - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a waterproofing structure of a sash frame capable of installing the waterproofing structure of the sash frame around an opening section by a simple execution method and, at the same time, easily exhibiting an excellent waterproofing performance. <P>SOLUTION: The waterproofing structure is so constituted that the sash frame 11 is mounted around the opening section by a sash fixing jig 20 such as a nail, a screw or the like while holding an elastic sealing compound 19 having an attached body selective adhesive layer 18 on the surface between a collar section 17 of the sash frame 11 and an attached surface 16 around the opening section, and a driving interval of the sash fixing jig 20 makes 1/2 to 1/3 of 450 mm. The sash frame 11 is formed in the shape of a rectangle, and an increased fixing jig 21 is further driven into a corner part of the sash frame 11. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waterproof structure for a sash frame, and more particularly to a waterproof structure for a sash frame in which a rectangular sash frame is mounted around an opening while sandwiching an elastic sealing material.

[0002]

[Problems to be Solved by the Prior Art and Invention] Due to the recent enforcement of the Quality Assurance Law for residential buildings, the waterproof performance is regarded as a basic performance for a house, such as the clarification of the responsibility for guaranteeing defects related to rain leaks. On the side as well, it is necessary to take technical measures to ensure more reliable waterproof performance and avoid complaints about rain leaks. In addition, the most frequent leak points are those around windows and other openings around which sash frames are attached, and about 40% of complaints about rain leaks are about those leaks. is there.

On the other hand, the presence or absence of water leakage around the opening to which the sash frame is attached depends on the waterproofness between the brim portion of the sash frame and the adhered surface around the opening. And, compared with a prefabricated house obtained by producing a housing unit with a sash frame attached in advance at a factory etc. and bringing it into a construction site and assembling it,
Particularly in the case of conventional wooden timber houses where almost all construction work is performed at the construction site, the shape of the openings is different from the sash attachment materials around the openings such as columns, studs, window lintels, and window stands. ,
Since it is necessary to attach general-purpose sash frames according to the size at the construction site, it is difficult to secure a strong waterproof performance, and a simple construction method is provided for such openings. There is a demand for the development of a waterproof structure that is capable of ensuring the prevention performance.

As a conventional waterproof structure for attaching a general-purpose sash frame around an opening at a construction site, a waterproof tape 50 as shown in FIG. 6 is known. According to this waterproof structure, first, the brim portion 53 of the sash frame 52 is arranged so as to be in close contact with the outer surface of the sash mounting member 51 around the opening, and at a distance of about 450 mm in the circumferential direction toward the sash mounting member 51. The sash frame 52 is fixed to the opening by driving a sash fixing jig 54 made of nails, screws, or the like. Thereafter, a moisture-permeable waterproof sheet attached to the outer surface of the surrounding outer wall, a waterproof sheet 55 made of asphalt felt or the like is extended to the brim portion 53 of the sash frame 52 and closely arranged, for example, a plastic material, Around the sash frame 52 by attaching a waterproof tape 50 made of butyl rubber based material such as rubber as a base material so as to cover the contact portion between the waterproof sheet 55 and the brim portion 53 and to extend over both sides of the contact portion. A waterproof structure is formed by a waterproof sheet 55 continuous along the.

However, according to the above conventional waterproof structure, the waterproof performance depends on the construction accuracy, and the waterproof tape 50 is used.
There is a possibility that water may leak when exposed to severe wind and rain due to peeling due to variations in the sticking work of No. 2 and generation of pinholes.

An object of the present invention is to provide a waterproof structure of a sash frame which can be installed around an opening by a simple construction method and can easily exhibit excellent waterproof performance. is there.

[0007]

According to the present invention, an elastic sealing material having an adherend-selective adhesive layer on the surface is sandwiched between the brim portion of a sash frame and the adherend surface around the opening, and A waterproof structure in which a sash frame is attached around the opening with a sash fixing jig such as a nail or a screw, and the driving interval of the sash fixing jig is 1/2 to 1/3 of 450 mm. The above object is achieved by providing a waterproof structure for the sash frame.

In the waterproof structure of the sash frame of the present invention, the sash frame has a rectangular shape (including a square),
It is preferable that the sash fixing jig is additionally struck at a corner portion where a joint portion (joint portion) between the vertical frame member and the horizontal frame member of the sash frame is present (the invention according to claim 2).

In the above description, examples of the elastic sealing material having the adherend-selective pressure-sensitive adhesive layer on the surface include, for example, rubber (EPDM) closed-cell foam, urethane, non-vulcanized butyl, and foamed polyethylene. It is preferable to use a foamed elastic watertight material such as mixed non-vulcanized butyl. Further, the adherend-selective pressure-sensitive adhesive layer is a layer forming a contact surface with the adhered surface around at least the opening of the elastic sealant, and the adherend-selective adhesive has an initial state. There is a tackiness, and when it is pressure-bonded, adhesive force is developed, and when peeled off, there is no tackiness in the initial state, unlike a general adhesive that produces resistance due to its cohesive force. It is a pressure-sensitive adhesive having adhesive properties with different strengths.

That is, the adherend-selective pressure-sensitive adhesive is a tack that is a "tack which is a force that adheres to an adherend in a short time with a light force", and a tackiness among the three so-called tackiness factors of tackiness and holding power. It is a tack-free and delayed-adhesive pressure-sensitive adhesive that is suppressed so that it does not stick at the time of handling as compared with general rubber-based pressure-sensitive adhesives and acrylic pressure-sensitive adhesives. Is an adhesive that has improved. The adhesive force of the adhesive is expressed by the intermolecular force acting when the adhesive is brought close to the adherend, and the way of expressing this adhesive force is the difference between the adhesive and the adherend. Since it varies depending on the distance and the flexibility (elastic modulus) of the pressure-sensitive adhesive, the adherend-selective pressure-sensitive adhesive used in the present invention controls the elastic modulus to suppress the development of the adhesive force due to the initial pressure bonding,
It is designed to exhibit adhesive properties by flowing with the passage of time, and the selectivity of the adherend is adjusted by adjusting the action of, for example, a chemical bonding force other than the intermolecular force.

As the elastic sealing material having the adherend-selective pressure-sensitive adhesive layer on its surface, more specifically, for example, the trade name "Seal Saver SA" (manufactured by Nitto Denko Corporation) can be used. .

According to the present invention, the elastic seal material having the adherend-selective pressure-sensitive adhesive layer on the surface is sandwiched between the brim portion of the sash frame and the adherend surface around the opening while fixing the sash. The tool is driven at intervals of ½ to ⅓ of 450 mm and the sash frame is attached around the opening, whereby the water blocking function is shared by the adherend selective adhesive layer and the cushioning function is shared by the elastic sealing material. At the same time, a simple method can be used to easily compress the elastic sealant without excessive compression.
It is possible to secure high water-sealing performance of the seal. That is, the tack-free adherend-selective adhesive makes it easy to handle the elastic sealant, and when the sash frame is assembled, even if the elastic sealant contacts the adherend, the adherent-selective adhesive It does not adhere immediately due to the delayed adhesive property of
It is possible to easily reposition and align the sash frame. After the sash fixing jig is driven into the sash frame at the above predetermined intervals and the sash frame is assembled, the elastic sealing material adheres to the adherend surface with high precision by the adherence function of the adherend selective adhesive, and even in a low compression state. In addition to being able to exhibit high water-stop performance, it is possible to maintain a strong water-stop performance even when used for a long period of time because it is in a water-stop state in the adhesive mode.

[0013]

Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Figure 1 (a),
The waterproof structure of the sash frame according to the first embodiment of the present invention shown in (b) and FIG. 2 is, for example, the sash frame 11 in the window opening 10 provided in the outer wall of the wooden house building by the conventional shaft construction method.
It was adopted as a waterproof structure when attaching. That is, the window opening 10 is a pair of pillars and studs 1 that form the outer wall of the house (not shown).
2, the window lintel 13 and the window pedestal 14 are surrounded to form a rectangular shape, and these pillars / studs 12, window lintel 13, and window pedestal 14 are sash attachment materials around openings. 15, the outer surface thereof forms the adhered surface 16 around the opening.

The waterproof structure of the first embodiment has an adherend selective adhesive layer 18 on the surface between the brim 17 of the sash frame 11 and the adherend 16 around the opening ( Figure 3
Refer to) While sandwiching the elastic sealing material 19, the sash frame 11
Is attached around the opening by a sash fixing jig 20 such as a nail or a screw, and the driving interval of the sash fixing jig 20 is 1/2 to 1/3 of 450 mm. Further, according to the first embodiment, at least the upper corner portion of the sash frame 10 having a rectangular shape is additionally struck by the staking fixing jig 21.

The waterproof structure of the first embodiment can be easily installed around the opening by the following simple construction method. That is, the moisture permeable waterproof sheet laid on the surrounding outer wall surface, the waterproof sheet 22 made of asphalt felt or the like is used for the pillar / stud 12, the window lintel 13, and the window stand 14.
The sash mounting member 15 is extended to the front surface of the sash mounting member 15, and is bent inward at the edge of the window opening 10, and the tongue-shaped bent piece 23 is closely arranged on the inner surface of the sash mounting member 15 (FIG. 2). reference). On the other hand, a rectangular annular elastic seal material 19 having an adherend-selective pressure-sensitive adhesive layer 18 on the surface facing the adherend surface 16 is provided on the surface opposite to the adherend-selective pressure-sensitive adhesive layer 18, for example. The rectangular annular sash frame 11 to which the elastic sealing material 19 is attached is attached to the flat back surface side of the brim portion 17 along the outer periphery of the sash frame 11 via the acrylic adhesive layer 24 (see FIG. 3). The sash mounting member 15 provided with the waterproof sheet 22 while sandwiching the elastic seal member 19 between the brim 17 and the adherend 16 around the opening.
It is installed while being accurately aligned with the front side surface of.

Then, 1/2 of 450 mm in the circumferential direction
The brim portion 17 of the sash frame 11 at a predetermined interval of 1/3
Via a plurality of screw driving holes 25 formed in advance in
By driving the sash fixing jig 20 toward the sash mounting material 15, the sash frame 11 has an adherend-selective pressure-sensitive adhesive layer sandwiched between the brim and the adherend on the surface of the elastic sealing material. By this, it will be attached around the opening with a strong and stable waterproof performance.

Further, according to the first embodiment, the sash frame 1
A general-purpose sash frame is used as 1, and the sash frame 11 has a pair of vertical frame members 11a and a pair of horizontal frame members 11b as shown in FIG. The sealer portion (sash frame joint portion) 26 of the vertical frame member 11a and the horizontal frame member 11b is easily processed into a rectangular shape and integrally formed. 26 is reinforced by a sealing material, and at least the upper corner portion of the sash frame 11 near the sealer portion 26 above is additionally struck by the staking fixing jig 21.

The waterproof structure of the first embodiment can be installed around the opening by a simple construction method and can easily exhibit excellent waterproof performance. That is, in the waterproof structure of the first embodiment, the elastic seal material 1 having the adherend selective adhesive layer 18 on the surface between the brim 17 of the sash frame 11 and the adherend 16 around the opening is provided.
Since the sash fixing jig 20 is driven at a driving interval of ½ to ⅓ of 450 mm while sandwiching 9, the adherend of the elastic seal material 19 is applied by the above-described simple construction method. The selective adhesive layer 18 can be easily provided around the opening due to the ease of handling due to the delayed adhesive property and the ease of repositioning / alignment.

Further, according to the first embodiment, the driving interval of the sash fixing jig 20 is 1/2 to 1/3 of 450 mm which is the driving interval of a general sash frame. While the water-sealing function is shared by the adherend-selective pressure-sensitive adhesive layer 18 and the cushioning function by the elastic seal material 19, the elastic seal material 19 is not excessively compressed,
It is possible to effectively secure the water-stopping performance of the low compression / high seal, and the elastic sealing material 19 accurately adheres to the adherend surface 16 due to the adhesive function of the adherend selective adhesive 18. It becomes possible to exert a high water-stopping performance even in a compressed state, and since it is in a water-stopping state in the adhesive mode, it becomes possible to maintain a strong water-stopping performance even when used for a long period of time.

Further, according to the first embodiment, since the additional fixing jig 21 is additionally struck on at least the upper corner portion of the sash frame 11, water leakage from the upper corner portion, which is likely to be a weak point of waterproof performance. Can be avoided more effectively.

FIG. 5 shows a waterproof structure for a sash frame according to a second embodiment of the present invention. According to the second embodiment, a cross section is provided on the back surface side of the brim portion 17 of the sash frame 11. Elastic seal material 1 with a U-shape and an open surface on the back side
9 is provided so as to project, and the elastic seal material 19 is mounted in a state of being fitted into the mounting recess 27, and the elastic seal material 19 is attached to the brim portion 17 of the sash frame 11 and the adherend surface 16 around the opening. Will be compressed and sandwiched between.

The waterproof structure of the second embodiment has the same effect as the waterproof structure of the first embodiment, and the elastic sealing member 19 is attached to the mounting recess 27 in the brim. Since the elastic sealing member 19 is sandwiched between the portion 17 and the adherend 16, the compressed state of the elastic sealing member 19 is substantially uniform over the entire circumference, and the elastic sealing member 19 is prevented from being displaced. Can be given.

The present invention is not limited to the above embodiment, and various modifications can be made. For example, the waterproof structure of the present invention is not limited to the sash frame that is attached around the opening of the window opening, but as a waterproof structure of the sash frame that is attached around other openings formed on the outer wall of the building. It can also be adopted. Further, the waterproof structure of the present invention is not limited to a general-purpose sash frame, and can be adopted as a waterproof structure of a custom-made sash frame. Further, the sash fixing jig can be additionally struck at the lower corner portion of the sash frame, and the corner portion of the sash frame need not be additionally struck.

[0024]

EXAMPLES Hereinafter, the waterproof structure of the sash frame of the present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited thereto.

Examples 1 and 2 have substantially the same structure as the waterproof structure of the first embodiment, and as shown in Table 1, the driving interval of the screw (sash fixing jig) into the sash frame is 450.
The waterproof structure of Example 1 is 1/2 to 1/3 of mm, and the upper corner portion of the sash frame is additionally struck with an additional screw (an additional fixing jig). According to the test method described later, JIS A4706 is used. A watertightness test (JIS A 1517) was carried out according to the "sash" to determine the waterproof performance. The waterproof structure of the first embodiment is similar to that of the first embodiment, and a screw driving interval between the sash frames is 200 m.
The waterproof performance of Example 2 was determined by setting the m to m, and additionally struck the upper corners of the sash frame with additional screws and reinforced with a sealing material. The judgment results are shown in Table 1.

[0026]

[Table 1]

[Embodiment 3] The waterproof structure according to the second embodiment has substantially the same structure. As shown in Table 1, the screw driving interval into the sash frame is set to 200 mm, and the upper corner of the sash frame is set. A watertightness test (JIS A 1517) was conducted in accordance with JIS A 4706 "sash" by the test method described later with the waterproof structure of Example 3 in which the part was additionally struck and reinforced with a sealing material. Then, the waterproof performance was judged. The judgment results are shown in Table 1.

[Comparative Examples 1 and 2] The structure has substantially the same structure as the conventional waterproof structure shown in FIG. 6, and, as shown in Table 1, the screw driving interval into the sash frame is 450 mm (standard). As a waterproof structure of Comparative Example 1, a watertightness test (JIS A 1517) was carried out according to JIS A 4706 "sash" by the test method described later to determine the waterproof performance. Further, it has substantially the same structure as the conventional waterproof structure shown in FIG. 6, and the screw driving interval to the sash frame is 4
The waterproof performance was evaluated in the same manner as the waterproof structure of Comparative Example 2 in which the waterproof tape was sealed around the waterproof tape while having a length of 50 mm (standard). The judgment results are shown in Table 1.

[Comparative Examples 3 and 4] A structure having substantially the same structure as the waterproof structure of the first embodiment, and as shown in Table 1, the screw driving interval into the sash frame is 450 mm (standard). The waterproof structure of Comparative Example 3 was subjected to a water tightness test (JIS A 1517) according to JIS A 4706 "sash" by the test method described later, and the waterproof performance was determined. Further, the waterproof structure according to the first embodiment is substantially the same as that of the first embodiment, and the screw driving interval to the sash frame is set to 450.
The waterproof performance of Comparative Example 4 was determined in the same manner as the waterproof structure of Comparative Example 4 while having a size of mm (standard) and further provided with a waterproof tape. The judgment results are shown in Table 1.

[Comparative Example 5] The waterproof structure of the second embodiment is substantially the same as that of Table 2, and as shown in Table 1, the screw driving interval into the sash frame is 450 mm (standard), and the sash frame is In the waterproof structure of Comparative Example 5, the upper corner portion of which was additionally struck with additional screws and reinforced with a sealing material was subjected to JIS A 470 according to the test method described later.
6 Watertightness test (JIS A 151
7) was carried out and the waterproof performance was judged. The judgment results are shown in Table 1.

[Test Method] Using a dynamic wind pressure test apparatus having a schematic structure as shown in FIG. 7, JIS A1517 is used.
The watertightness test according to the above was performed. The dynamic air pressure test device is composed of a pressure box, a blower, a pressure adjuster, a pressure measuring device, etc., and the blower was attached to each of the specimens of Examples 1 to 3 and Comparative Examples 1 to 5 attached to the pressure box. The pressure generated in step 1 can be applied at an arbitrary pressure by automatic control. In addition, it is equipped with a water sprinkler and a displacement measuring device so that a water tightness test and a wind pressure resistance test can be performed. Here, the pressure is positive pressure when the pressure is applied from the outdoor side (pressure inside the pressure box) and negative pressure when pressure is applied from the indoor side (pressure reduction inside the pressure box).

As the test method, first, prior to the test, a static pressure equal to the upper limit of the set pressure difference is applied for 1 minute. Next, the pressure difference before and after the test body and the sprinkling state are set as shown in FIG. 8, the state is kept for 10 minutes, and the presence or absence of water leakage is visually observed. According to JIS A 4706, in the performance pressurized water spray schedule of each grade as shown in FIG. 8, under pressure water spray, “flow from between the adherend and the brim of the sash”, “adherence surface and sash” "Splash from between the brim of the sash", "Blowout from between the adherend and the brim of the sash", "Overflow from between the adherend and the brim of the sash" does not occur. Use as a criterion. In addition, it was decided that a slight bleeding such that a water drop stayed on the spot was appropriate. As the waterproof performance around the opening, at least equivalent to the watertightness of the sash itself should be ensured, and the performance aimed at the state of no water leakage at W-30 was set.

From the test results shown in Table 1, it is found that the waterproof structure of the sash frames of Examples 1 to 3 according to the present invention exhibits excellent waterproof performance.

[0034]

According to the waterproof structure of the sash frame of the present invention,
It can be installed around the opening by a simple construction method and can easily exhibit excellent waterproof performance.

[Brief description of drawings]

FIG. 1A is an exploded perspective view for explaining a mounting state of a waterproof structure for a sash frame according to a first embodiment of the present invention, and FIG.
FIG. 4 is a perspective view showing a state after the waterproof structure is attached.

FIG. 2 is an exploded cross-sectional view of an essential part for explaining a mounting state of a waterproof structure for a sash frame according to the first embodiment of the present invention, and a sectional view showing a state after mounting.

FIG. 3 is an enlarged cross-sectional view illustrating the structure of an elastic sealing material having an adherend selective pressure-sensitive adhesive layer on its surface.

FIG. 4 is an explanatory diagram of a situation in which a corner portion of a sash frame is reinforced.

5A and 5B are an exploded cross-sectional view of an essential part for explaining a mounting state of a waterproof structure for a sash frame according to a second embodiment of the present invention, and a sectional view showing a state after mounting.

6A and 6B are an exploded cross-sectional view of a main part for explaining a mounting state of a conventional waterproof structure for a sash frame, and a sectional view showing a state after mounting.

FIG. 7 is a schematic diagram illustrating a schematic configuration of a dynamic wind pressure testing device.

FIG. 8 is a chart illustrating a performance pressurized watering schedule of each grade in a water tightness test.

[Explanation of symbols]

10 window openings 11 sash frame 11a Vertical frame material 11b Horizontal frame material 15 Sash mounting material 16 Adhering surface around the opening 17 Sash frame brim 18 Adhesive selective adhesive layer 19 Elastic seal material 20 Sash fixing jig 21 Over-fixing fixture 22 tarpaulin 25 screw driving hole 26 Sealer 27 Mounting recess

Claims (2)

[Claims] 1. An elastic sealing material having an adherend-selective adhesive layer on its surface is sandwiched between the brim portion of the sash frame and the adherend surface around the opening, and the sash frame is made of nails, screws, or the like. The waterproof structure is attached around the opening by a sash fixing jig, and the driving interval of the sash fixing jig is 1/4 of 450 mm.
The waterproof structure of the sash frame is characterized by 2 to 1/3. 2. The sash frame has a rectangular shape, and the sash fixing jig is additionally struck at a corner portion where a joint between a vertical frame member and a horizontal frame member of the sash frame exists. The sash frame waterproof structure according to Item 1.