JP7366831B2 - Water stop structure and water stop method - Google Patents

Description

The present invention relates to a water-stopping structure and a water-stopping method for a threaded portion into which a screw is screwed.

Conventionally, as a waterproof structure for the threaded joint where screws are screwed together, a waterproof sheet is laid on the top of the floor and covers the bottom of the wall at the corner where the floor and wall of the building meet. A waterproof tape is placed across the upper edge of the raised part and the wall surface above it, and a draining material covering the raised part and the waterproof tape is attached to the wall with a fixing screw that passes through the waterproof tape. The structure is known (for example, see Patent Document 1). With this draining structure, when installing the draining material, by applying an irregular water stop material such as caulking material to the tip of the fixing screw and tightening the screw, the irregular water stop material applied to the fixing screw is removed. It is said that waterproofing is applied by spreading through the through holes of the draining material and near the upper edge of the waterproof tape.

JP2017-193920A

As described above, the amorphous waterproofing material such as caulking material applied to the tip of the screw is torn off by the member into which the screw is screwed when the screw is tightened. At this time, the irregular water stop material that is removed remains around the waterproof sheet and the member to which the screw is screwed, but it does not necessarily remain around the entire circumference of the screw, and the irregular water stop material is removed. There is a risk that it will be biased. At this time, if the member to which the screw is screwed is exposed to the outside, it is sufficient to replenish additional irregular-shaped water-stopping material to the parts where the irregular-shaped water-stopping material has not spread, but for example, When attaching parts to an exterior wall, when screwing screws into a frame installed on the inside of the exterior wall, it is difficult to replenish the irregular water stop material because it is obstructed by the exterior wall. There is a possibility that the water cannot be stopped.

The present invention has been made in view of such problems, and its purpose is to more reliably watertight the threaded portion of a screw that is threaded into a portion that is not exposed and blocked by the partition portion. It is an object of the present invention to provide a water-stopping structure and a water-stopping method that are capable of stopping water.

The main invention for achieving this object is that a partition part is provided that separates an outside part from an inside part in which a wooden part covered with a waterproof sheet is provided, and a screw entering from the outside part is screwed into the wooden part. The partition part and the waterproof sheet each have a first through hole having an inner diameter larger than the outer diameter of the thread of the screw, and the wooden part is on the partition part side. has a recessed part on the opposite side of the partition part and has an inner diameter larger than the outer diameter of the thread, and the screw passes through the first through hole, enters the recessed part, and screws into the wooden part. A water-stop structure characterized by having an irregularly shaped water-stop material extending between the circumferential surface of the screw in the recess and the circumferential edge of the first through hole of the waterproof sheet. It is.
Other features of the present invention will become apparent from the description of this specification and the accompanying drawings.

According to the present invention, there is provided a water-stopping structure and a water-stopping method capable of more reliably water-stopping a threaded part of a screw that is threaded into a part that is not exposed and blocked by a partition part. Is possible.

FIG. 1 is a schematic cross-sectional view showing a water-stopping structure according to the present invention. FIG. 2 is a schematic cross-sectional view showing the water stopping method of the present invention. It is a schematic cross-sectional view explaining the water stop method when it does not have a furring.

Hereinafter, a water stop structure according to an embodiment of the present invention will be described with reference to the drawings.
The water-stopping structure of this embodiment can be applied to various building accessories, such as handrails on balconies installed outdoors of buildings, rafters that support the building side of roofs such as sunrooms, outer shades, and wall-mounted surface lattices. This is a water-stop structure where the screws that attach the components of the building to the building are screwed into the building frame, etc. Therefore, in the following explanation, the member that is attached to the outer wall 1 will be referred to as the attachment member 2, and in the drawing, the cross section of the attachment member 2 that comes into contact with the outer wall 1 and is attached with the screws 3 is schematically shown as a rectangle. Show and explain.

First, the structure of a building having an outer wall 1 to which the mounting member 2 is attached will be described.
As shown in FIG. 1, the outdoor side surface 4a of the frame 4 as a wooden part of the building is covered with a moisture-permeable waterproof sheet (waterproof sheet) 5. An outer wall 1 made of siding material or the like is provided via a plurality of furring edges 6 provided along the outer wall. That is, the outer wall 1 is provided on the outdoor side of the frame 4 covered with the moisture-permeable waterproof sheet 5 and is spaced apart from the waterproof sheet 5, and the plurality of rims 6 are connected to the outer wall 1 and the moisture-permeable waterproof sheet 5. They are provided at appropriate intervals in the horizontal direction between them.

The mounting member 2 is abutted against an already provided outer wall 1, and is mounted by screwing screws 3 passing through the outer wall 1 onto the frame 4. Therefore, at the position where the screw 3 penetrates, there may be a case where the furring 6 exists between the outer wall 1 and the moisture-permeable waterproof sheet 5, or a case where the furring 6 does not exist. Here, an example will be described in which the screw 3 is passed through a position where the furring 6 exists between the outer wall 1 and the moisture-permeable waterproof sheet 5. Here, the outer wall 1 corresponds to a partition part that partitions the outside and the inside where the wooden part covered with the waterproof sheet is provided, and the rim 6 corresponds to another member existing between the partition part and the waterproof sheet. corresponds to Further, the outside partitioned by the partition corresponds to the outdoor side, and the inside corresponds to the indoor side.

The screw 3 that fixes the mounting member 2 has a threaded portion 3a that is screwed into the frame 4, a screw head 3b that comes into contact with the outdoor surface 2a of the mounting member 2 when tightened, and a threaded portion 3a. and a cylindrical non-threaded portion 3c that is provided between the screw head 3b and the screw head 3b and has no thread. In this embodiment, as shown in FIG. 2(c), the length L1 of the non-threaded portion 3c is from the outdoor surface 2a of the mounting member 2 in contact with the outer wall 1 to the outdoor surface of the frame 4. The outer diameter D1 of the non-threaded portion 3c is larger than the outer diameter D2 of the thread of the threaded portion 3a. In addition, an irregular water stop material 7 such as putty sealant or unvulcanized rubber is provided on the circumferential surface of the threaded portion 3a before screwing.

The outer wall 1, the mounting member 2, the moisture-permeable waterproof sheet 5, and the rim 6 are provided with a through hole 1a having an inner diameter D3 smaller than the screw head 3b of the screw 3 and larger than the outer diameter D1 of the non-threaded portion 3c. 2b, 5a, and 6a are provided on the same axis, and the frame body 4 is formed coaxially with the outer wall 1, the moisture-permeable waterproof sheet 5, and the rim 6, and has a recess on the indoor side with the same inner diameter D3. A recessed portion 4b is provided on the outdoor side surface 4a. The screw 3 enters the recess 4b and is screwed into the frame 4 at the center of the recess from the outdoor side to the indoor side. Here, the through holes 1a and 5a provided in the outer wall 1 and the moisture-permeable waterproof sheet 5 correspond to the first through hole, and the through hole 6a provided in the furring 6 corresponds to the second through hole.

In the mounting member 2, a screw 3 passing through the outer wall 1, the mounting member 2, the moisture-permeable waterproof sheet 5, and the rim 6 enters the recess 4b and is inserted into the center of the recess 4b from the outdoor side toward the indoor side. The screw is screwed into the frame 4, and is clamped and fixed between the outer wall 1 and the screw head 3b. Therefore, the length L1 of the non-threaded portion 3c of the screw 3 is the distance L3 ( It is shorter than the one shown in Figure 1). In this embodiment, since the moisture-permeable waterproof sheet 5 is thin, the screws 3 essentially simply pass through the moisture-permeable waterproof sheet 5, but since the screws 3 enter while rotating, the moisture-permeable waterproof sheet 5 The state in which the screw 3 passes through the hole 5 is referred to as screwing.

When the screw 3 is screwed into the frame 4, the amorphous water stop material 7 provided on the threaded portion 3a of the screw 3 is torn off by the frame 4 and remains in the recess 4b. As the screws 3 are tightened, the amount of the amorphous water stop material 7 that has been removed and remains in the recess 4b increases and overflows from the recess 4b to the outdoor side of the frame 4. The overflowing irregular water stop material 7 is distributed between the outdoor surface 4a of the frame 4 and the moisture-permeable waterproof sheet 5, between the moisture-permeable waterproof sheet 5 and the indoor surface 6b of the rim 6, and between the rim 6 and the rim. It enters between the through hole 6a of No. 6 and the non-threaded portion 3c of the screw 3. For this reason, water is stopped between the moisture-permeable waterproof sheet 5 and the frame 4 by an irregular water stop material 7, which prevents water such as rainwater from entering the threaded part where the screw 3 is threaded. are doing.

To stop water at the threaded part of the screw 3 that attaches the mounting member 2, first, use a drill or the like to insert the screw 3 into the position where you want to attach the mounting member 2, that is, where you want to screw it, as shown in Figure 2(a). A pilot hole 4d is formed for the purpose. At this time, a pilot hole 4d is formed by penetrating the outer wall 1, the moisture-permeable waterproof sheet 5, and the rim 6 from the outdoor side of the outer wall 1 toward the indoor side so as to reach the frame 4.

Next, as shown in FIG. 2(b), drill the through holes 1a, 5a, and 6a of the non-threaded portion 3c of the screw 3 with an inner diameter D3 larger than the outer diameter D1 using a drill so that they are approximately coaxial with the pilot hole 4d. etc., by penetrating the outer wall, the moisture-permeable waterproof sheet 5, and the rim 6 from the outdoor side of the outer wall 1 toward the indoor side, and further advancing a drill to form the recess 4b in the frame 4. do. Here, the process of forming the pilot hole 4d, the through holes 1a, 5a, and 6a, and the recess 4b corresponds to the first step. At this time, the order in which the pilot hole 4d, the through holes 1a, 5a, and 6a, and the recess 4b are formed does not matter first. Moreover, when the furring 6 does not exist, the step of forming the lower hole 4d, the through holes 1a and 5a, and the recess 4b corresponds to the first step.

Next, as shown in FIG. 2(c), a mounting member 2 is provided with a through hole 2b having the same inner diameter D3 as the through holes 1a, 5a, and 6a of the outer wall 1, the moisture-permeable waterproof sheet 5, and the rim 6. are arranged in accordance with the positions of the through holes 1a of the outer wall 1, and the screws 3 are inserted into each of the through holes 1a, 2b, 5a, and 6a from the outdoor side of the mounting member 2. At this time, the tip of the screw 3 is brought into contact with the frame 4 so that the irregular water stop material 7 provided on the screw 3 does not come into contact with the inner periphery of each of the through holes 1a, 2b, 5a, and 6a as much as possible.

Finally, as shown in FIG. 1, the screws 3 are screwed into the frame 4, and the mounting member 2 is mounted by being sandwiched between the outer wall 1 and the screw head 3b. Here, the step of inserting the screws 3 into the through holes 1a, 2b, 5a, and 6a from the outdoor side of the mounting member 2 and screwing the screws 3 into the frame 4 corresponds to the second step.

According to the water-stop structure and water-stop method of the present embodiment, the irregular-shaped water-stop material 7 is applied from within the recess 4b of the frame 4 into which the screw 3 is screwed to at least one surface side of the moisture-permeable waterproof sheet 5. Since the screws 3 are connected to each other, the inside of the recess 4b into which the screw 3 is screwed and between the peripheral part of the moisture permeable waterproof sheet 5 through which the screw 3 passes and the frame 4 are filled with irregular water stop material. It is sealed by 7. Therefore, it is possible to provide higher waterproofness.

In addition, the through hole 5a provided in the moisture permeable waterproof sheet 5 through which the screw 3 passes and the recess 4b of the frame 4 have an inner diameter D3 larger than the outer diameter D2 of the thread, so the threaded portion 3a Even when screwing the screw 3 on which the irregular water stop material 7 is provided on the frame 4, the irregular water stop material 7 applied to the threaded portion 3a must be removed until it is screwed onto the frame 4. I can't. For this reason, it is possible to stop water between the moisture-permeable waterproof sheet 5 and the frame 4 by allowing the irregularly shaped water-stopping material 7 that has been screwed together and cut out to remain in the recess 4b and overflowing. . For this reason, even if the outer wall 1 is provided with a space between it and the frame 4 to which the screw 3 is screwed, it is not possible to directly seal the frame 4 which is separated from the outdoors by the outer wall 1. , it is possible to more reliably and easily watertight the threaded portion into which the screw 3 is threaded. That is, it is possible to provide higher water-stopping properties while screwing the screws 3 into the frame 4 that is not exposed and blocked by the outer wall 1.

Moreover, the screw 3 has an outer diameter larger than the outer diameter D2 of the thread and smaller than the inner diameter D3 of the through holes 1a, 2b, 5a, and 6a between the threaded part 3a and the screw head 3b that are screwed into the frame 4. Since it has the non-threaded portion 3c having the diameter D1, it is possible to suppress the irregular-shaped water stop material 7 from moving along the thread groove toward the screw head 3b side, and the irregular-shaped water stop material 7 can be prevented from moving toward the screw head 3b side. It is possible to retain more of the water material 7 in the recess 4b.

In addition, the outer wall 1 and the moisture permeable waterproof sheet 5 are provided with a through hole 6a having an inner diameter D3 larger than the outer diameter D2 of the screw thread. Even when the furring 6 is present between the seat 5 and the seat 5, it is possible to more reliably and easily watertight the threaded portion where the screw 3 is threaded.

In addition, since the through holes 1a, 5a, 6a and the recess 4b can be formed all at once from the outdoor side of the outer wall 1 to the frame 4 using a drill or the like, , it is possible to easily provide through holes 1a, 5a, and 6a coaxially with the same inner diameter larger than the outer diameter D2 of the thread. Furthermore, since the irregular water stop material 7 can be easily inserted through the through holes 1a, 5a, and 6a while remaining on the circumferential surface of the threaded portion 3a, more irregular water stop material 7 can be inserted into the frame 4. It is possible to cut it out and make it stay in the recess 4b, and it can also be made to overflow from the recess 4b to form a space between the outdoor surface 4a of the frame 4 and the moisture permeable waterproof sheet 5. It is possible to more reliably enter between the indoor side surface 6b of the furring 6 and between the through hole 6a of the furring 6 and the non-threaded portion 3c of the screw 3. For this reason, even if the outer wall 1 is provided at a distance from the frame 4 to which the screws 3 are screwed and partitions the outdoors and the moisture-permeable waterproof sheet 5 side, the work from the outdoor side of the outer wall 1 will cause the By forming the holes 4d, through-holes 1a, 5a, and 6a, and the recess 4b, and tightening the screws 3 provided with the amorphous waterproof material 7, the moisture-permeable waterproof sheet 5 and the frame can be easily and more reliably connected. Provided is a water stopping method that can prevent water such as rainwater from entering into the threaded part of the frame 4 where the screw 3 is threaded, by using an irregular shaped water stopping material 7 between the screw 3 and the threaded part 4. It is possible to do so.

In the above embodiment, an example in which the screw 3 is provided with the non-threaded portion 3c has been described, but the non-threaded portion 3c may not necessarily be provided.

In addition, in the above embodiment, the case where the screw 3 is passed through the position where the furring 6 exists between the outer wall 1 and the moisture-permeable waterproof sheet 5 has been described as an example, but when the screw 3 is inserted through the position where the furring 6 does not exist, In the case where the screw 3 is passed through, as shown in FIGS. 3(a) and 3(b), the rim 6 is not present in the above embodiment, and the pilot hole 4d and the recess 4b are formed in the frame body 4. Also, after forming the through holes 1a and 5a in the outer wall 1 and the moisture-permeable waterproof sheet 5, the screw 3 with the irregular shaped water stop material 7 provided on the threaded portion 3a is inserted from the through hole 1a side of the outer wall 1. By screwing together from within the recess 4b of the frame 4, it is possible for the irregular water stop material 7 to enter from the recess 4b so as to be connected to both sides of the moisture permeable waterproof sheet 5. Therefore, even in a position where there is no furring edge, it is easier and more reliable to easily and reliably connect the area between the circumferential surface of the screw 3 in the recess 4b and the circumferential edge of the through hole 5a of the moisture-permeable waterproof sheet 5. It is possible to provide an irregular water stop material 7, and it is possible to prevent water such as rainwater from entering the threaded portion of the frame 4 into which the screw 3 is threaded.

In the above embodiment, an example has been described in which the wooden part is the frame 4 and the partition part is the outer wall 1, but the invention is not limited to this, and the inside where the wooden part covered with a waterproof sheet is provided, and the outside, This method can be applied as long as a member is attached to a partition part that partitions a room using a screw that is screwed into a wooden part.

The embodiments described above are provided to facilitate understanding of the present invention, and are not intended to be interpreted as limiting the present invention. It goes without saying that the present invention may be modified and improved without departing from its spirit, and that the present invention includes equivalents thereof.
This embodiment includes at least the following inventions.

A partition part is provided to separate an inside part where a wooden part covered with a waterproof sheet is provided and an outside part, and the water-stop structure is provided at a part where a screw entering from the outside is screwed into the wooden part, The partition portion and the waterproof sheet each have a first through hole having an inner diameter larger than the outer diameter of the thread of the screw, and the wooden portion is recessed on the side opposite to the partition portion, The screw has a recess with an inner diameter larger than the outer diameter of the thread, and the screw passes through the first through hole and enters the recess to be screwed into the wooden part. This water-stop structure is characterized by having an amorphous water-stop material extending between the circumferential surface of the waterproof sheet and the circumferential edge of the first through-hole of the waterproof sheet.

According to such a water-stopping structure, since the amorphous water-stopping material is provided between the circumferential surface of the screw in the recess and the circumferential edge of the first through-hole of the waterproof sheet, the screw is not screwed together. The inside of the concave portion where the screws pass and between the periphery of the waterproof sheet through which the screws pass and the wooden portion are water-stopped by an amorphous water-stopping material. Therefore, even if the screws penetrate the waterproof sheet, higher waterproofness can be achieved. In addition, the first through hole through which the screw passes and the recess in the wood part have an inner diameter larger than the outer diameter of the thread, so for example, if the screw is coated with an irregular water stop material, Even when screwed together, the amorphous water stop material applied to the screw is not removed until it is screwed into the wood part. For this reason, by screwing together, the amorphous water stop material cut out from the wooden part stays in the recess, and by overflowing, the circumferential surface of the screw in the recess and the periphery of the first through hole of the waterproof sheet. It is possible to stop water between the two. Therefore, even if a partition member separates the wood part side into which the screw is threaded from the outdoors, the threaded part can be watertight more reliably and easily. That is, it is possible to provide a water-stopping structure that can provide higher water-stopping properties while screwing a screw into a member that is not exposed because it is blocked by the partition.

In the water-stop structure of such a member, the screw has a hole between the screw part screwed into the wooden part and the screw head, which is larger than the outer diameter of the thread and smaller than the inner diameter of the first through hole. It is characterized by having a non-threaded portion having an outer diameter and in which the thread is not formed.

According to such a water-stopping structure, it is possible to suppress the irregular-shaped water-stopping material from moving toward the screw head side along the thread groove, and it is possible to retain more of the irregular-shaped water-stopping material in the recess. is possible.

In such a water-stop structure, if another member is present between the partition portion and the waterproof sheet, the screw passes through the other member and the outer diameter of the thread is larger than the outer diameter of the thread. The second through hole is also provided with a large inner diameter.

According to such a water-stop structure, the second through hole having an inner diameter larger than the outer diameter of the screw thread is also provided in the other member existing between the partition part and the waterproof sheet, so that the partition part Even if there is another member between the waterproof sheet and the waterproof sheet, it is possible to more reliably and easily watertight the threaded portion.

In this waterproof structure, the wooden part is a frame of a building, the partition part is an outer wall of the building, and an accessory is attached to the building by the screw.

According to such a water-stopping structure, even if the side of the frame where the screws are screwed together and the outdoors are separated by an external wall, it is possible to more reliably and easily water-stop the threaded portions of the screws. . That is, it is possible to attach an accessory to a building with higher water-tightness while screwing the screw into the frame that is not exposed because it is blocked by the outer wall.

Further, there is provided a water stopping method for a part where a screw entering from the outside of a partition part that partitions an inside where a wooden part covered with a waterproof sheet is provided and an outside is screwed into the wooden part, forming a pilot hole for screwing the screw; and a recess provided on the outer periphery of the pilot hole on the opposite side of the partition and having an inner diameter larger than the outer diameter of the thread of the screw; A first step of forming a first through hole having an inner diameter larger than an outer diameter of the thread in the partition portion and the waterproof sheet; The water stopping method is characterized by having a second step of penetrating the through hole and screwing into the lower hole.

According to such a water stopping method, the inner diameters of the first through hole, the second through hole, and the recess through which the screw passes before reaching the pilot hole are larger than the outer diameter of the thread, so that It is possible to screw a screw into a pilot hole in a recess provided in the wooden part with the irregular water stop material provided. Therefore, it is possible to screw the screw into the wooden part without the irregular water stop material provided on the screw being torn off before reaching the prepared hole. For this reason, more of the amorphous waterproof material that has been screwed together and cut out stays in the recess and overflows, thereby creating a connection between the circumferential surface of the screw in the recess and the circumferential edge of the first through-hole of the waterproof sheet. It is possible to stop water between the two. Therefore, even if a partition member separates the outside from the wooden part where the screw is screwed, the screwed part can be more reliably and easily watertight. That is, it is possible to provide a water-stopping method that can provide higher water-stopping properties while screwing a screw into a member that is not exposed because it is blocked by the partition.

1 Outer wall, 1a through hole (first through hole), 2 mounting member,
2b through hole, 3 screw, 3a screw part, 3b screw head,
3c threaded part, 4 main body, 4b recessed part, 4d pilot hole, 5 moisture-permeable waterproof sheet,
5a through hole (first through hole), 6 furring edge, 6a through hole (second through hole),
7 Irregular water stop material,
D1 Outer diameter of non-threaded part, D2 Outer diameter of thread,
D3 Inner diameter of first through hole, second through hole, and recess

Claims (5)

A partition part is provided that separates an inside where a wooden part covered with a waterproof sheet is provided and an outside, and a water-stopping structure is provided at a part where a screw entering from the outside is screwed into the wooden part,
The partition portion and the waterproof sheet each have a first through hole having an inner diameter larger than the outer diameter of the thread of the screw,
The wooden part has a recess on the partition side opposite to the partition and has an inner diameter larger than the outer diameter of the thread,
The screw passes through the first through hole, enters the recess, and is screwed into the wooden part,
A water-stop structure comprising an irregular water-stop material extending between a circumferential surface of the screw in the recess and a circumferential edge of the first through-hole of the waterproof sheet. The water stop structure according to claim 1,
The screw has an outer diameter larger than an outer diameter of the thread and smaller than an inner diameter of the first through hole, and the thread is formed between the threaded part screwed into the wooden part and the screw head. A water-stop structure characterized by having a non-threaded part. The water stop structure according to claim 1 or claim 2,
If there is another member between the partition portion and the waterproof sheet, a second through hole through which the screw passes through the other member and has an inner diameter larger than an outer diameter of the thread. A water-stop structure characterized by being provided with. The water stop structure according to any one of claims 1 to 3,
The wooden part is the frame of the building,
The partition part is an outer wall of the building,
A water-stop structure characterized in that an accessory is attached to the building by the screw. A water stop method for a part where a screw entering from the outside of a partition part that partitions an inside where a wooden part covered with a waterproof sheet is provided and an outside is screwed into the wooden part,
a pilot hole for screwing the screw into the wooden part; and a recess provided on the outer circumferential side of the pilot hole on the opposite side of the partition and having an inner diameter larger than the outer diameter of the thread of the screw. form,
a first step of forming a first through hole in the partition portion and the waterproof sheet, the inner diameter of which is larger than the outer diameter of the thread;
a second step of threading the screw, the threaded part of which of which is provided with an irregular water stop material, through the first through hole and into the lower hole;
A water stop method characterized by having the following.

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