JP6932215B2 - Seal mechanism, seal member, and construction method of seal mechanism - Google Patents

Description

The present invention relates to a sealing mechanism, a sealing member, and a method of constructing the sealing mechanism.

In FIG. 5 of Patent Document 1, a backup material is filled in the gap between the peripheral edge of the opening of the outer wall and the water blocking plate facing the peripheral wall as a space-holding member, and the gap is formed on the outer peripheral side of the backup material. A sealing mechanism including a sealing material for sealing is disclosed.

Japanese Unexamined Patent Publication No. 2004-1699969

In the sealing mechanism described in Patent Document 1, the sealing material deteriorates over time due to ultraviolet rays and the like, and its sealing function deteriorates. When the sealing function deteriorates, rainwater passes through the sealing material and accumulates in the area filled with the backup material. The rainwater accumulated in the area has an adverse effect such as corrosion on the cylinder. It is also conceivable that the rainwater accumulated in the area may infiltrate indoors from between the cylinder and the outer wall. Therefore, it is desirable to efficiently discharge the rainwater that has passed through the sealing material and entered the region to the outside so that the rainwater is not stored in the region filled with the interval holding member.

The present invention provides a sealing mechanism and a sealing member capable of efficiently draining rainwater that has entered the region filled with the backup material, and rainwater that has entered the region filled with the backup material. It is an object of the present invention to provide a construction method capable of constructing a seal mechanism capable of efficiently draining water.

The sealing mechanism according to the present invention comprises an outer wall having an opening and a fixing object having a fixing object fixed through the opening and having an opposing portion facing the peripheral edge of the opening of the outer wall. A sealing mechanism for sealing the gap, which is arranged between the annular first backup material filled in the gap and the peripheral edge portion and the facing portion of the gap and below the first backup material. A passage constituent member extending downward from the lower end of the first backup material to form a drainage passage opened to the outside, and the peripheral edge portion and the facing portion on the outer peripheral side of the first backup material. A first sealing material, which is filled in a region other than the passage constituent member and the passage and seals between the peripheral edge portion of the opening and the facing portion on the outer peripheral side of the first backup material, is provided. It is characterized by.

The sealing member according to the present invention includes a facing portion facing the peripheral edge portion of the opening of the outer wall, and a sealing material is filled between the peripheral edge portion and the facing portion along the outer periphery of the annular backup material. A member for forming a passage which is fixed to the facing portion at a position lower than the position where the backup material is arranged, extends downward from the lower end of the backup material, and is not filled with the sealing material. A passage component is provided , and the passage is a passage for drainage that is open to the outside .

The method of constructing the sealing mechanism according to the present invention is a fixing object having an outer wall having an opening and a fixing object having an facing portion facing the peripheral edge of the opening of the outer wall, which is a fixing object fixed through the opening. This is a method of constructing a sealing mechanism that seals the gap between the two, and a passage component member extending vertically and forming a drainage passage opened to the outside is fixed at a position below the opening of the facing portion. The first step of filling the gap with the backup material on the inner peripheral side of the passage constituent member and the second step of filling the gap with the sealing material along the outer periphery of the backup material. The second step is characterized in that the passage is not filled with the sealing material by filling the passage while avoiding the passage constituent members.

The method of constructing the sealing mechanism according to the present invention is a fixing object including an outer wall having an opening and a fixing object having an facing portion facing the peripheral edge of the opening of the outer wall, which is a fixing object fixed through the opening. This is a method of constructing a sealing mechanism for sealing the gap between the above and the first step of filling the gap with a backup material, and filling the gap between the peripheral edge portion and the facing portion and the backup material. A second step of arranging a passage component for forming a drainage passage that extends downward from the lower end of the backup material and opens to the outside below the position, and the peripheral portion of the gap. It has a third step of filling the sealing material along the outer periphery of the backup material between the facing portion, and in the third step, the sealing material is filled while avoiding the passage constituent member. As a result, the passage is not filled with the sealing material. Either of the first step and the second step may be performed first.

According to the sealing mechanism and the sealing member according to the present invention, rainwater that has entered the region filled with the backup material can be efficiently drained by the passage formed by the passage constituent member. According to the method of constructing the sealing mechanism according to the present invention, it is possible to construct a sealing mechanism capable of efficiently draining rainwater that has entered the area filled with the backup material.

It is a schematic cross-sectional view of the seal mechanism, the outer wall, and the ventilation fan unit which concerns on embodiment. (A) is an enlarged cross-sectional view of a portion A in FIG. (B) is an enlarged cross-sectional view of a portion B of FIG. It is an exploded perspective view for demonstrating the seal plate which the mounting frame of a ventilation fan unit has, and the mounting frame main body. (A) is an elevational view of the configuration excluding the weather cover in FIG. 1 when viewed from the outdoor side, and (B) is a view of the configuration of (A) viewed from below. It is a flow chart which shows an example of the construction method of the seal mechanism of FIG. (A) is a diagram showing a state of construction of the seal mechanism of FIG. 1, and (B) is a diagram showing a state after (A). (A) to (C) are diagrams showing passage constituent members according to a modified example.

Hereinafter, the sealing mechanism 100 and the like according to the embodiment will be described with reference to the drawings. In each drawing, in order to make the structure of the seal mechanism 100 easy to understand, the seal mechanism 100 is exaggerated and enlarged as compared with other members. Further, in each figure, the internal structure of each member is omitted as appropriate. For example, in FIG. 1, the internal structure of the ventilation fan 22 is omitted, and the entire ventilation fan 22 is provided with hatches showing a cross section. Further, a plate material or the like provided inside the weather cover 21 or the like for controlling the air flow is also omitted.

As shown in FIGS. 1 and 2, the sealing mechanism 100 seals the gap S between the outer wall 10 having the opening 11 and the ventilation fan unit 20 fixed to the outer wall 10 while passing through the opening 11. Hereinafter, the outer wall 10 and the ventilation fan unit 20 will be described, and then the seal mechanism 100 will be described.

The outer wall 10 provided with the opening 11 is formed of, for example, an ALC (Autoclaved Lightweight aerated Concrete) panel. As shown in FIG. 3, the opening 11 of the outer wall 10 is formed in a quadrangular shape.

As shown in FIG. 1, the ventilation fan unit 20 has a hollow weather cover 21 arranged outdoors, a ventilation fan 22 arranged indoors, a weather cover 21 and a ventilation fan 22 attached to both ends and an outer wall 10. The mounting frame 23 and the above are provided.

The weather cover 21 is a cover that prevents rainwater from entering the room. The ventilation fan 22 is a pressure ventilation fan that introduces outdoor air indoors, or a pressure ventilation fan that discharges indoor air to the outside. The ventilation fan 22 may be provided with various filters for purifying air.

As shown in FIGS. 1 and 2, the mounting frame 23 includes a mounting frame main body 23A which is a hollow cylinder, a seal plate 23B fixed to one end of the mounting frame main body 23A on the outdoor side, and an outer circumference of the mounting frame main body 23A. A stopper 23C fixed to the surface by welding or the like is provided. The mounting frame 23 also includes a mounting member 23D for mounting the mounting frame 23 or the ventilation fan unit 20 on the outer wall 10.

As shown in FIG. 3, the mounting frame main body 23A has a tubular shape having a square cross section. As shown in FIGS. 1 and 3, the mounting frame main body 23A passes through the opening 11 in a state of being spaced from the inner surface of the opening 11. As shown in FIG. 1, a weather cover 21 is fixed to one end of the mounting frame main body 23A on the outdoor side by sandwiching a seal plate 23B with bolts B1 and nuts N1. A ventilation fan 22 is fixed to one end of the mounting frame main body 23A on the indoor side by bolts B2 and nuts N2. In addition, each fixing method is arbitrary, and may be joined by welding or the like.

The seal plate 23B is a sealing member for sealing by the sealing mechanism 100. As shown in FIG. 3, the seal plate 23B is a quadrangular plate material, and has a quadrangular through hole 23BA in the center thereof. In the mounting frame main body 23A and the sealing plate 23B of FIG. 3, the through hole into which the bolt B1 is inserted is omitted. The omission of this through hole is the same in FIG. 4 described later. As shown in FIGS. 1 and 2, the through hole 23BA communicates with the opening on the outer wall 10 side of the weather cover 21 and the opening on the outdoor side of the mounting frame main body 23A.

As shown in FIGS. 1 to 3, the outer circumference of the seal plate 23B is larger than the outer circumference of the mounting frame main body 23A. Therefore, the seal plate 23B protrudes outward from the mounting frame main body 23A, and as shown in FIGS. 2 and 3, the peripheral edge portion of the seal plate 23B faces the peripheral edge portion 12 of the opening 11 of the outer wall 10. It is the opposite portion 23BB. In FIG. 3, the facing portion 23BB is a region outside the two-dot chain line of the seal plate 23B, and the peripheral edge portion 12 is a region between the two-dot chain line of the outer wall 10 and the edge of the opening 11.

The stopper 23C is in contact with the second backup material 103 of the sealing mechanism 100 and restricts the movement of the second backup material 103 to the indoor side. The mounting member 23D is made of L-shaped steel and is fixed to the side surface of the mounting frame main body 23A by bolts or welding (not shown). Further, the mounting member 23D is mounted on the outer wall 10 by the bolt B1. By this attachment, the ventilation fan unit 20 is fixed to the outer wall 10 by the attachment member 23D of the attachment frame 23.

As shown in FIGS. 1 and 2, the gap S between the ventilation fan unit 20 and the outer wall 10 is formed between the mounting frame main body 23A and the sealing plate 23B of the mounting frame 23, the inner surface of the opening 11 of the outer wall 10, and the peripheral edge of the opening 11. The cross section is L-shaped due to the portion 12. Further, the gap S has a square ring shape when viewed from the outdoor side in an elevational manner.

As shown in FIGS. 1 and 2, the sealing mechanism 100 seals a gap S having an L-shaped cross section. The sealing mechanism 100 includes a first backup material 101, a first sealing material 102, a second backup material 103, a second sealing material 104, and a passage component 105. The backup materials 101 and 103 are made of various rod-shaped members such as polyethylene foam, and for the sealing materials 102 and 104, for example, urethane-based or silicon-based synthetic resins are used.

As shown in FIGS. 1 and 2, in the gap S, the corner portion formed by the mounting frame main body 23A and the seal plate 23B is filled with the first backup material 101. As shown in FIG. 4, the first backup material 101 is formed in a square annular shape along the edge of the opening 11.

As shown in FIGS. 1 and 2, in the gap S, the first sealing material 102 is filled between the facing portion 23BB of the facing seal plate 23B and the peripheral edge portion 12 of the outer wall 10. The first sealing material 102 is arranged on the outer peripheral side of the first backup material 101 and surrounds the outer circumference of the first backup material 101. The first sealing material 102 seals between the facing portion 23BB and the peripheral portion 12 on the outer peripheral side of the first backup material 101. The first sealing material 102 is in contact with the first backup material 101 and is backed up by the first backup material 101. As shown in FIG. 4, the first sealing material 102 is formed along the outer circumference of the first backup material 101.

As shown in FIGS. 1 and 2, in the gap S, between the mounting frame main body 23A and the inner surface of the opening 11, the second backup material 103 and the second sealing material 104 are filled in this order from the indoor side. .. The second sealing material 104 is in contact with the second backup material 103 and is backed up by the second backup material 103. The second backup material 103 and the second sealing material 104 are formed in a square annular shape along the edge of the opening 11, similarly to the first backup material 101. The second backup material 103 and the second sealing material 104 are formed at a position and shape that overlap with the first backup material 101 when viewed from the outdoor side in an elevational position. The second backup material 103 and the second sealing material 104 are located on the indoor side of the first backup material 101. The second sealing material 104 may or may not be in contact with the first backup material 101.

As shown in FIGS. 3 and 4, the passage component 105 is fixed to the lower part of the facing portion 23BB of the seal plate 23B. The passage component 105 has a hat-shaped cross section protruding from the facing portion 23BB toward the peripheral edge portion 12 of the outer wall 10. Specifically, as shown in FIG. 3, the passage component 105 is a pair of a groove portion 105A having a U-shaped cross section and a pair of groove portions 105A protruding from both ends and fixed to the facing portion 23BB by welding or bolts (not shown). A brim portion 105B is provided.

The passage component 105 is a member that opens up and down, and extends along the vertical direction to form a passage R that communicates the space above and below the passage component 105. The passage component 105 is located between the facing portion 23BB of the sealing plate 23B facing each other and the peripheral edge portion 12 of the outer wall 10 and below the opening 11 of the outer wall and the first backup material 101 in the gap S. Have been placed. Therefore, the passage R extends downward from the lower end 101A of the first backup material 101. The passage component 105 reaches the lower end of the seal plate 23B, that is, the lower end between the facing portion 23BB and the peripheral edge portion 12, and the passage R also reaches the lower end. As shown in FIG. 4B, the lower portion 102A of the first sealing material 102 arranged below the first backup material 101 is interrupted by the passage component 105. That is, the passage R formed by the passage constituent member 105 is provided in the middle of the lower portion 102A of the first sealing material 102. The passage R is a space U1 in which the first backup material 101 is filled above the passage component 105 in the gap S, and below the first sealing material 102 and below the passage component 105. It communicates with the area U2, which is the space of. As shown in FIG. 4B, the passage R exposes the first backup material 101, specifically the lower end 101A, downward from the first sealing material 102.

The sealing mechanism 100 is constructed by the process shown in FIG. First, the mounting frame main body 23A of the mounting frame 23 is fixed to the outer wall 10 by the mounting member 23D and the bolt B3 (step S1). After that, as shown in FIG. 6A, a rod-shaped second backup material 103 is packed and filled between the mounting frame main body 23A and the inner surface of the opening 11 of the outer wall 10, and then a paste-like second sealing. The material 104 is filled (step S2). After the second sealing material 104 is dried, the seal plate 23B is fixed to the mounting frame main body 23A as shown in FIG. 6 (B) (step S3). This fixing is performed by temporarily tightening the nut N1 to the bolt B1. As a result, a gap S having an L-shaped cross section is formed. After that, the rod-shaped first backup material 101 is packed and filled in the corner region of the gap S having an L-shaped cross section, that is, the inner peripheral side of the passage constituent member 105 (step S4). A rod-shaped first backup material 101 is inserted from the side into the region of the gap S above the passage component 105. After that, the paste-like first sealing material 102 is filled while avoiding the passage constituent member 105 arranged on the annular path along the outer circumference of the first backup material 101 (step S5). As a result, the first sealing material 102 is filled in the area between the facing portion 23BB of the seal plate 23B and the peripheral edge portion 12 of the outer wall 10 other than the passage constituent member 105 and the passage R. The passage R can communicate the space above and below the passage constituent member 105, that is, the region U1 filled with the first backup material 101 and the region U2 below the first sealing material 102. The sealing mechanism 100 is completed by drying the first sealing material 102 filled in step S5 (see FIG. 6B).

After the seal mechanism 100 is completed, the weather cover 21 and the ventilation fan 22 are attached to the mounting frame main body 23A. For the weather cover 21, for example, the nut N1 used for temporary tightening is once removed, and then the bolt B1 and the removed nut are removed. It is attached to the mounting frame main body 23A with N1.

When the first sealing material 102 deteriorates over time due to ultraviolet rays or the like, cracks or the like occur in the first sealing material 102. Therefore, as shown by the arrow P in FIG. 4A, the rainwater soaks into the first sealing material 102 and eventually reaches the region of the gap S filled with the first backup material 101. The indoor side of the first backup material 101 is filled with the second sealing material 104, while the first backup material 101 has almost no sealing function, so that rainwater that has reached the region can be moved to the indoor side. Instead, as shown by the arrow P, it travels around the first backup material 101, specifically, between the backup material 101 and the seal plate 23B, the second sealing material 104, or the mounting frame main body 23A, or the first. It soaks into the backup material 101 and moves to the lower part along the inside of the first backup material 101. The rainwater that has moved to the lower part moves to the area U1 above the passage constituent member 105 and accommodating the lower part of the first backup material 101, and communicates the area U1 with the area U2 below the first sealing material 102. It is discharged to the outside through the passing passage R. Therefore, according to the present embodiment, even when rainwater soaks into the first sealing material 102 and reaches the region filled with the first backup material 101 due to aged deterioration, the passage R is not formed as compared with the conventional case. Can efficiently discharge the rainwater that has reached the area. As a result, it is possible to prevent the ventilation fan unit 20, particularly the mounting frame main body 23A and the seal plate 23B, from being corroded by rainwater.

Further, in this embodiment, since the passage constituent member 105 is provided, when the first sealing material 102 is filled, if the passage constituent member 105 is avoided and the first sealing material 102 is filled, the passage R can be formed. Can be secured. Therefore, the seal mechanism 100 provided with the passage R can be easily constructed.

Further, since the passage component 105 has a hat-shaped cross section including a groove portion 105A having a U-shaped cross section and a pair of brim portions 105B protruding from the groove portion 105A and fixed to the facing portion 23BB, the passage R is provided. It can be easily formed.

Further, in the sealing mechanism 100, the rainwater that has reached the region filled with the first backup material 101 is indoors due to the second sealing material 104 filled in the region on the indoor side of the first backup material 101 in the gap S. It can be prevented from invading. Therefore, the sealing mechanism 100 has a high sealing property. If a large amount of rainwater is accumulated in the region filled with the first backup material 101, the second sealing material 104, which is in contact with the rainwater for a long time, may also be deteriorated by the rainwater. The deterioration causes the infiltration of rainwater into the room, but in this embodiment, since the rainwater is efficiently discharged as described above, the second sealing material 104 is less likely to deteriorate, and the infiltration of rainwater into the room also occurs. Hard to occur.

The configuration of the seal mechanism 100 can be changed as appropriate. For example, the materials of the backup materials 101 and 103, the sealing materials 102 and 104, and the like can be changed as appropriate. Hereinafter, other modified examples will be illustrated.

The object to be sealed by the sealing mechanism 100 may be a fixed object fixed through the opening 11 and having an opposing portion facing the peripheral edge portion 12 of the opening 11 of the outer wall 10. The fixing target is not limited to the ventilation fan unit 20. Further, the fixing target may be fixed at a portion other than the outer wall. Although the passage component 105 is arranged below the center in the lateral direction of the first backup material 101, it may be arranged at another position under the first backup material 101. The passage component 105 fixed to the lower part of the facing portion 23BB of the seal plate 23B may be regarded as a member included in the seal plate 23B or the ventilation fan unit 20.

The passage component 105 has, for example, a hat-shaped cross section having a round U-shaped groove 105A shown in FIG. 7A instead of the square U-shaped groove 105A shown in FIGS. 3 and 4. May have. Further, the groove 105A does not have to be in contact with the peripheral edge 12 of the outer wall 10 as in the above embodiment. If the groove 105A has a square U-shaped cross section and is in contact with the peripheral edge 12, the passage R can be widened, and rainwater can be easily drained efficiently. As shown in FIG. 7B, the passage component 105 may be composed of a pair of L-shaped steels 105D having a passage R extending between them. As shown in FIG. 7C, the passage component 105 is fixed to the peripheral edge portion 12 of the outer wall 10 by a bolt or the like (not shown), and projects from the peripheral edge portion 12 toward the facing portion 23BB of the seal plate 23B. There may be. When the passage constituent member 105 is fixed to the facing portion 23BB on the fixing target side, the passage constituent member 105 can be easily positioned and the seal mechanism 100 can be easily installed. The passage component 105 may be fixed to the peripheral edge portion 12 or the seal plate 23B before the first backup material 101 is filled, or may be arranged after the first backup material 101 is filled. The passage component 105 may be fixed to the peripheral edge portion 12 or the seal plate 23B by being integrally molded with the peripheral portion 12.

The passage component 105 does not have to reach the lower end of the seal plate 23B, that is, the lower end between the facing portion 23BB and the peripheral edge portion 12. In the above embodiment, the first sealing material 102 is filled in all areas other than the passage component 105 and the passage R between the facing portion 23BB and the peripheral portion 12, but is filled in a part of the regions. May be good. The passage R formed by the passage constituent member 105 may extend vertically, for example, and in particular, may extend downward from the lower end 101A of the first backup material 101, as in the above embodiment. It may extend along the vertical direction, that is, along the direction perpendicular to the horizontal direction, or may extend at an angle inclined with respect to the vertical direction.

The second backup material 103 and the second sealing material 104 may be omitted so that the inner surface of the opening 11 of the outer wall 10 and the outer peripheral surface of the mounting frame main body 23A come into contact with each other.

10 outer wall, 11 openings, 12 peripherals, 20 ventilation fan unit, 21 weather cover, 22 ventilation fan, 23 mounting frame, 23A mounting frame body, 23B seal plate, 23BA through hole, 23BB facing part, 23C stopper, 23D mounting member, 100 Sealing mechanism 101 1st backup material, 101A lower end, 102 1st sealing material, 102A lower part, 103 2nd backup material, 104 2nd sealing material, 105 passage component, 105A groove, 105B brim, 105D L-shaped steel, B1 ~ B3 bolts, N1, N2 nuts, R passages, S gaps, U1, U2 areas.

Claims (6)

A sealing mechanism that seals the gap between an outer wall having an opening and a fixing object having a fixed object fixed through the opening and having an opposing portion facing the peripheral edge of the opening of the outer wall. hand,
An annular first backup material filled in the gap and
A drainage passage that is arranged between the peripheral edge portion and the facing portion of the gap and below the first backup material, extends downward from the lower end of the first backup material , and opens to the outside. And the passage components that make up
On the outer peripheral side of the first backup material, the passage constituent member and the region other than the passage between the peripheral edge portion and the facing portion are filled, and on the outer peripheral side of the first backup material, the peripheral edge portion of the opening is formed. A first sealing material that seals between the facing portion and
A sealing mechanism characterized by being provided with. The passage constituent member is a member having a hat-shaped cross section including a groove portion having a U-shaped cross section and a pair of brim portions protruding from both ends of the groove portion and fixed to the facing portion.
The sealing mechanism according to claim 1. An annular second sealing material filled indoors with respect to the first backup material in the gap is further provided.
The sealing mechanism according to claim 1 or 2. A sealing member having a facing portion facing the peripheral edge of the opening of the outer wall and being filled with a sealing material along the outer periphery of the annular backup material between the peripheral edge and the facing portion.
A passage component is provided for forming a passage that is fixed to the facing portion at a position lower than the position where the backup material is arranged, extends downward from the lower end of the backup material, and is not filled with the sealing material .
The passage is a drainage passage that is open to the outside.
A sealing member characterized by. Construction of a sealing mechanism that seals the gap between an outer wall having an opening and a fixing object having a fixed object fixed through the opening and having an opposing portion facing the peripheral edge of the opening of the outer wall. It's a method
A passage component member extending vertically and forming a drainage passage opened to the outside is fixed at a position below the opening of the facing portion.
The first step of filling the backup material on the inner peripheral side of the gap with respect to the passage constituent member, and
It has a second step of filling the gap with the sealing material along the outer circumference of the backup material.
In the second step, the sealing material is filled while avoiding the passage constituent member, so that the passage is not filled with the sealing material.
A method of constructing a sealing mechanism, which is characterized by the fact that. Construction of a sealing mechanism that seals the gap between an outer wall having an opening and a fixing object having a fixed object fixed through the opening and having an opposing portion facing the peripheral edge of the opening of the outer wall. It's a method
The first step of filling the gap with the backup material and
Between the peripheral edge portion and the facing portion in the gap and below the filling position of the backup material, a passage for drainage that extends downward from the lower end of the backup material and is open to the outside is formed. The second step of arranging the passage components for
A third step of filling the sealing material along the outer periphery of the backup material is provided between the peripheral edge portion and the facing portion of the gap.
In the third step, the sealing material is filled while avoiding the passage constituent member, so that the passage is not filled with the sealing material.
A method of constructing a sealing mechanism, which is characterized by the fact that.

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