JP2021195841A - Threadably engaged part structure of screw, and fixing structure of fixed member - Google Patents

Abstract

To provide a threadably engaged part structure of a screw which is improved in water cut-off performance.SOLUTION: A threadably engaged part structure of a screw that is threadably engaged with a wooden part covered with a waterproof sheet has an interposition member interposed between the waterproof sheet and the wooden part, in which the screw has an enlarged diameter part having a diameter larger than a screw outer diameter on a side closer to the head part side than the screw part formed with a screw thread, and a crossing surface crossing an axial direction of the screw part in a boundary part between the screw part and the enlarged diameter part, and the crossing surface presses the waterproof sheet and the interposition member against the wooden part side in a state of being threadably engaged with the waterproof sheet and the interposition member while penetrating therethrough.SELECTED DRAWING: Figure 3

Description

The present invention relates to a screwed portion structure of a screw screwed into a wooden portion covered with a waterproof sheet, and a fixing structure of a fixed member.

As the screwing part structure of the screw screwed into the wood part covered with the waterproof sheet, for example, a cap tree receiving piece and a cap tree are placed on the upper end surface of the panel formed by forming the foundation part of the roof balcony and covered with the waterproof sheet. A handrail attachment structure for a roof balcony that is screwed from above is known (see, for example, Patent Document 1). A groove is formed in the cap tree along the length direction, and a plurality of screw holes are provided on the bottom surface of the groove. Then, after the cap tree is fixed by the screw inserted into the screw hole, the groove is closed by the sealing material.

Japanese Unexamined Patent Publication No. 11-350584

In the cap tree fixed as described above, the upper part of the cap tree is blocked by the sealing material, but since the waterproof sheet has a hole due to the screw, rainwater etc. will infiltrate onto the waterproof sheet from either side. In addition, there is a possibility that the waterproof sheet may infiltrate the panel side through the hole, and there is a problem that the water blocking property is low.
The present invention has been made in view of the above problems, and an object of the present invention is to provide a screw threaded portion structure having better water stopping property and a fixing structure of a fixed member.

The main invention for achieving such an object is a screwed portion structure of a screw screwed into a wood portion covered with a waterproof sheet, and an interposition interposed between the waterproof sheet and the wood portion. The screw has a member, and the screw has a diameter-expanded portion having a diameter larger than the outer diameter of the screw on the head side of the screw portion on which the thread is formed, and a boundary portion between the screw portion and the diameter-expanded portion. Has an intersection surface that intersects the axial direction of the threaded portion, and the intersection surface is a state in which the waterproof sheet and the interposing member are screwed through the waterproof sheet and the interposing member. Is a screwed portion structure of a screw, characterized in that the screw is pressed toward the woody portion.
Other features of the present invention will be clarified by the description in the present specification and the accompanying drawings.

According to the present invention, it is possible to provide a screw threaded portion structure having better water stopping property and a fixing structure of a member to be fixed.

It is a perspective view which shows the mounting structure of a cap tree which is an example of the screwed part structure of the screw of this invention. It is a vertical sectional view which shows the structure of the handrail wall to which a cap tree is attached. It is an enlarged view of the part A in FIG.

Hereinafter, the screwed portion structure of the screw according to the embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, the screw screwed portion structure of the present embodiment will be described by an example of applying the holder 2 as a fixed member for holding the cap tree 1 to the handrail wall 3.
As shown in FIG. 1, the cap tree 1 is fitted and attached to a holder 2 fixed to a woody portion 3a of a handrail wall 3 by a screw 4.

The xylem portion 3a forms a handrail wall 3 that partitions the inside and outside of the balcony, the outer peripheral surface is covered with a waterproof sheet 3b, and surface materials 3c are provided on the inner surface side and the outer surface side of the balcony.
In the following description, the direction along the wall surface of the handrail wall 3 will be described as the in-plane direction, and the direction orthogonal to the wall surface will be described as the out-of-plane direction.

The cap tree 1 is provided over the entire length of the handrail wall 3 along the longitudinal direction of the handrail wall 3, and as shown in FIG. 2, the top surface portion 1a and the top surface portion 1a covering the upper part of the handrail wall 3 It has a side surface portion 1b that is connected almost vertically from the end portion in the out-of-plane direction and faces the side surface at the upper portion of the handrail wall 3. On the inner surface of the side surface portion 1b of the cap tree 1, a locking portion 1c that projects inward and is locked to the holder 2 is provided.

A plurality of holders 2 are provided at appropriate intervals in the in-plane direction of the handrail wall 3. That is, the holder 2 is a member whose width in the longitudinal direction of the handrail wall 3 is sufficiently narrower than that of the handrail wall 3.

The holder 2 has a rectangular top fixing portion 2a screwed to the wood portion 3a, two upward extending portions 2b extending upward from both ends of the top fixing portion 2a in the out-of-plane direction, and 2 A horizontal plane portion 2c extending from the upper end of each of the two upward extending portions 2b in the inward / outward direction of the balcony in the out-of-plane direction to form a substantially horizontal surface, and a horizontal plane portion 2c extending from the horizontal plane portion 2c to lower the front side. It has an extended arm portion 2d that is curved so as to be. The extending arm portion 2d is extended so that the tip thereof is located outside the upper part of the handrail wall 3, and the locking portion 1c of the cap tree 1 is locked to the tip thereof.

The holder 2 is fixed by a screw 4 under a waterproof sheet 3b that covers the top end of the woody portion 3a via a rubber sheet 5 as an interposing member. Here, the waterproof sheet 3b is in the form of a thin sheet, for example, TYVEK \ Tyvek (registered trademark) manufactured by EI DuPont Do Nemours & Company, and the rubber sheet 5 is thicker than the waterproof sheet 3b. It is pressed and compressed by the tightened screw 4. Further, an adhesive 6 (FIG. 3) is provided between the rubber sheet 5 and the waterproof sheet 3b, and between the rubber sheet 5 and the woody portion 3a, respectively.

The top fixing portion 2a of the holder 2 is provided with four elongated holes 2e through which the screws 4 can be inserted. In the present embodiment, the screws 4 are inserted into two elongated holes 2e out of the four elongated holes 2e. It is inserted and fixed. The elongated holes 2e are provided in the vicinity of the four corners of the top end fixing portion 2a along the out-of-plane direction, and the screws 4 are inserted into the two elongated holes 2e located diagonally. Here, the hole through which the screw 4 is inserted is not limited to the elongated hole.

As shown in FIG. 3, a rubber sheet 5 having a size sufficiently larger than that of the elongated hole 2e is interposed between the waterproof sheet 3b and the top end of the xylem portion 3a. The rubber sheet 5 is integrally formed by interposing a sheet-shaped core material 5a such as a non-woven fabric, a cloth, or a net between two rubber sheet members. The two sheet members may be members having the same thickness, elasticity, material, etc., or members having different thicknesses, elasticity, materials, and the like. Further, in the present embodiment, the rubber sheets 5 are provided corresponding to the individual elongated holes 2e, but one rubber sheet 5 having a size that accommodates the four elongated holes 2e may be used.

The screw 4 is a so-called stepped screw having a columnar portion 4c having a diameter D1 larger than the thread outer diameter D2 of the threaded portion 4d and having no thread 4b on the head 4a side, and is a columnar portion 4c. The boundary portion between the threaded portion 4d and the threaded portion 4d forms an intersecting surface 4e orthogonal to the axial direction of the threaded portion 4d. Here, the cylindrical portion 4c corresponds to the enlarged diameter portion. Further, the outer peripheral surface of the enlarged diameter portion may be provided with irregularities such as threads.

Further, the length L1 of the columnar portion 4c is longer than the thickness t1 of the top end fixing portion 2a, and the thickness t1 + t2 + t3 which is the sum of the thickness t1 of the top end fixing portion 2a, the thickness t2 of the rubber sheet 5, and the thickness t3 of the waterproof sheet. Is also formed short. Therefore, the crossing surface 4e of the screw 4 is in a state where the screw portion 4d is screwed and tightened to the wood portion 3a through the long hole 2e of the top fixing portion 2a, the waterproof sheet 3b, and the rubber sheet 5. The waterproof sheet 3b is pressed together with the rubber sheet 5 toward the woody portion 3a to compress the rubber sheet 5. That is, the intersection surface 4e of the screw 4 presses the rubber sheet 5 and the waterproof sheet 3b toward the wood portion 3a. At this time, the waterproof sheet 3b follows the shape of the rubber sheet 5 that has been pressed and deformed.

In the method of attaching the cap tree 1 to which the screwed portion structure of the screw 4 of the present embodiment is applied, first, the rubber sheet 5 is placed on the top end of the wood portion 3a via the adhesive 6, and the wood portion 3a is attached together with the rubber sheet 5. Cover with a waterproof sheet 3b. At this time, the adhesive 6 is also provided between the upper surface of the rubber sheet 5 and the waterproof sheet 3b.

Next, the waterproof sheet 3b and the rubber sheet 5 are penetrated, and a pilot hole (not shown) corresponding to the screw outer diameter D2 is formed in the wood portion 3a.

Next, the holder 2 is arranged by aligning the positions of the prepared hole and the long hole 2e, and the screw 4 is inserted into the long hole 2e and the prepared hole from above and screwed into the xylem portion 3a, and the holder 2 is attached to the handrail wall 3. To fix. At this time, the space between the rubber sheet 5 and the waterproof sheet 3b and the space between the rubber sheet 5 and the wood portion 3a are both watertight due to the adhesive 6.
Next, the cap tree 1 is covered from above the handrail wall 3 and the holder 2, the cap tree 1 is locked to the holder 2, and the cap tree 1 is attached to the handrail wall 3.

According to the screwed portion structure of the screw of the present embodiment, the screwed screw 4 has an intersecting surface 4e forming a boundary portion between the cylindrical portion 4c having a diameter D1 larger than the screw outer diameter D2 and the threaded portion 4d. Since the rubber sheet 5 is pressed and compressed toward the wooden portion 3a together with the waterproof sheet 3b, it is possible to close the screw holes formed in the waterproof sheet 3b and the rubber sheet 5 by the crossing surface 4e by screwing the screws 4. be.

Further, since the intersecting surface 4e presses and compresses the rubber sheet 5 toward the woody portion 3a together with the waterproof sheet 3b, water is stopped between the waterproof sheet 3b and the rubber sheet 5 and between the rubber sheet 5 and the woody portion 3a. To. Therefore, it is possible to prevent rainwater or the like from entering the woody portion 3a side from the head side of the screw 4. Therefore, it is possible to provide a screwed portion structure of the screw 4 having more excellent water stopping property.

Further, since the adhesive 6 is provided between the rubber sheet 5 and the waterproof sheet 3b and between the rubber sheet 5 and the wood portion 3a, the adhesive sheet 6 is provided between the rubber sheet 5 and the waterproof sheet 3b, and the rubber sheet. The space between 5 and the wood part 3a becomes watertight. Therefore, it is possible to prevent rainwater or the like from entering between the rubber sheet 5 and the waterproof sheet 3b and between the rubber sheet 5 and the woody portion 3a, and to provide higher water stopping property.

Further, since the adhesive 6 is provided between the rubber sheet 5 and the waterproof sheet 3b, even if the waterproof sheet 3b is pressed against the intersection surface 4e and the screw 4 is tightened, the waterproof sheet 3b is twisted. Since it is difficult to get rid of it, the crossing surface 4e presses the waterproof sheet 3b in a flat state. Therefore, since a gap is unlikely to occur between the intersection surface 4e and the waterproof sheet 3b, it is possible to secure higher water stopping property.

At this time, the pressure-sensitive adhesive 6 does not necessarily have to be provided on both sides of the rubber sheet 5. For example, if the pressure-sensitive adhesive 6 is provided on at least one side of the rubber sheet 5, the pressure-sensitive adhesive 6 is provided. Since the water is stopped between the rubber sheet 5 and the waterproof sheet 3b or between the rubber sheet 5 and the wood portion 3a, the adhesive 6 is not provided on either side of the rubber sheet 5. It is possible to provide high water resistance.

Further, since the rubber sheet 5 having higher elasticity than the waterproof sheet 3b is interposed between the waterproof sheet 3b and the wooden portion 3a, the rubber sheet 5 is deformed while being compressed by the tightened screw 4. However, since the waterproof sheet 3b located between the intersection surface 4e of the screw 4 and the rubber sheet 5 is along the deformed rubber sheet 5, it has higher water resistance between the intersection surface 4e and the rubber sheet 5. It is possible.

Further, since the compressed rubber sheet 5 strongly presses the woody portion 3a, it is possible to provide higher water stopping property between the rubber sheet 5 and the woody portion 3a. Therefore, it is possible to more reliably prevent rainwater or the like from entering through the screw holes formed in the waterproof sheet 3b and the rubber sheet 5.

Further, since the rubber sheet 5 has a core material 5a inside, when the screw 4 is screwed to form a screw hole in the rubber sheet 5, the rubber sheet 5 tears and propagates. It is possible to prevent it.

Further, when the holder 2 is sandwiched and fixed between the screw 4 and the waterproof sheet 3b by the screwed portion structure of the screw 4 described above, water can be discharged from between the holder 2 and the waterproof sheet 3b. Even if it penetrates into the screwed portion side, the crossing surface 4e of the screw 4 presses and compresses the rubber sheet 5 toward the wood portion 3a side together with the waterproof sheet 3b, so that water is applied to the wood portion 3a to which the screw 4 is screwed. It is possible to prevent the infiltration. That is, it is possible to prevent water from entering the wood portion 3a side of the waterproof sheet 3b pressed by the intersection surface 4e of the screw 4.

In the above embodiment, the rubber sheet 5 is used as the interposing member, but the present invention is not limited to this, and is more easily compressed than the waterproof sheet 3b due to the intersection surface 4e of the tightened screws such as a synthetic resin sheet material. It does not matter if it is a member.

In the above embodiment, an example in which the screwed portion structure of the screw of the present invention is applied to the fixing of the holder 2 to the wooden portion 3a of the handrail wall 3 has been described, but the present invention is not limited thereto. That is, the wood part to which the screw is screwed is not limited to the handrail wall, and the member fixed by the screw is not limited to the holder, while preventing water from entering the member side to which the screw is screwed. It can be applied to any part as long as it is a part where a screw is screwed. For this reason, it can be applied not only when fixing some member but also when the screw is provided with the seat surface of the screw head at a distance from the waterproof sheet, such as for hooking a member such as a spring or wire. Is.

The above embodiment is for facilitating the understanding of the present invention, and is not for limiting the interpretation of the present invention. It goes without saying that the present invention can be modified and improved without departing from the spirit thereof, and the present invention includes an equivalent thereof.

The present embodiment includes at least the following inventions.
It is a screwed portion structure of a screw screwed into a wood part covered with a waterproof sheet, and has an intervening member interposed between the waterproof sheet and the wood part, and the screw is a screw thread. An intersection with a diameter-expanded portion having a diameter larger than the outer diameter of the screw on the head side of the threaded portion on which the thread is formed intersects with the axial direction of the screw portion at the boundary portion between the screw portion and the diameter-expanded portion. It has a surface, and the crossing surface presses the waterproof sheet and the interposing member toward the wood portion side in a state of being screwed through the waterproof sheet and the interposing member. It is a characteristic screw thread structure.

According to the screwed portion structure of such a screw, in the screwed screw, the intersection surface forming the boundary between the enlarged diameter portion having a diameter larger than the outer diameter of the screw and the threaded portion is an intervening member together with the waterproof sheet. Is pressed toward the wood portion, so that the screw is screwed in and the screw hole formed in the waterproof sheet and the interposition member can be closed at the intersection. Further, since the intersecting surface presses the interposing member together with the waterproof sheet toward the woody portion, water is stopped between the waterproof sheet and the interposing member and between the interposing member and the woody portion. Therefore, it is possible to prevent rainwater or the like from infiltrating from the head side of the screw to the xylem side. Therefore, it is possible to provide a screw thread structure having better water stopping property.

The screwed portion structure of the screw is characterized in that the interposition member is provided with an adhesive at least one of the space between the waterproof sheet and the wood portion. ..
According to the screwed portion structure of such a screw, the adhesive is provided between the interstitial member and the waterproof sheet and at least one of the interstitial member and the woody portion. It becomes watertight between the waterproof sheet on the side where the adhesive is provided or the wood part. For this reason, rainwater or the like does not enter from between the member on the side of the interstitial member where the adhesive is provided, rather than when the interstitial member is simply interspersed between the wood part and the waterproof sheet. It is possible to prevent and provide higher tarpaulin.

In addition, because the adhesive is provided between the interposition member and the waterproof sheet, even if the waterproof sheet is pressed against the intersection surface and the screws are tightened, the waterproof sheet is difficult to twist, so the intersection surface is , Press the tarpaulin that remains flat. Therefore, since a gap is unlikely to occur between the intersection surface and the waterproof sheet, it is possible to secure higher water stopping property.

At this time, if the adhesive is provided on either side of the interposing member, water is stopped between the interposing member and the waterproof sheet and between the interposing member and the wood part. Therefore, it is possible to provide a higher water stopping property.

The threaded portion structure of the screw is characterized in that the interposing member is a rubber sheet.
According to such a screw threaded portion structure, since the interposition member is a rubber sheet, the rubber sheet is deformed while being compressed by the crossed surface of the tightened screw, and is positioned between the crossed surface of the screw and the rubber sheet. Since the waterproof sheet is along the deformed rubber sheet, it is possible to provide higher water stopping property between the intersection surface and the rubber sheet. Further, since the compressed rubber sheet presses the xylem more strongly, it is possible to provide higher water stopping property between the rubber sheet and the xylem. Therefore, it is possible to more reliably prevent rainwater or the like from entering from the waterproof sheet side to the xylem side.

It is a screwed portion structure of such a screw, and the rubber sheet is characterized by having a core material inside.
According to such a screw threaded portion structure, since the rubber sheet has a core material inside, the rubber sheet is torn when the screw is screwed to form a screw hole in the rubber sheet. It is possible to prevent it from propagating.

Further, the fixing structure of the fixed member is characterized in that the fixed member arranged in contact with the waterproof sheet is sandwiched and fixed between the screw and the screw portion structure of the screw. Is.
According to such a fixing structure of the fixed member, when the fixed member is sandwiched and fixed between the screw and the waterproof sheet, water is screwed from between the fixed member and the waterproof sheet. Even if it penetrates into the screwed part, the crossing surface of the screw presses the interposition member toward the wood part together with the waterproof sheet, so it is possible to prevent water from entering the wood part where the screw is screwed. It is possible. That is, it is possible to prevent water from entering the wood portion side of the waterproof sheet pressed by the intersection surface of the screws.

2 holder, 3a wood part, 3b tarpaulin, 4 screws, 4a head,
4b thread, 4c cylinder, 4d thread, 4e intersection, 5 rubber sheet,
5a core material, 6 adhesive,
D1 cylinder diameter, D2 screw outer diameter,

Claims (5)

It is a screwed part structure of a screw that is screwed into a wooden part covered with a waterproof sheet.
It has an interposing member interposed between the waterproof sheet and the woody portion, and has an interposing member.
The screw is
An enlarged diameter portion having a diameter larger than the outer diameter of the screw on the head side of the threaded portion on which the thread is formed intersects with the axial direction of the threaded portion at the boundary portion between the threaded portion and the enlarged diameter portion. Have an intersection, and
Screwing of a screw, characterized in that the crossing surface presses the waterproof sheet and the interposing member toward the xylem side in a state of being screwed through the waterproof sheet and the interposing member. Part structure. The threaded portion structure of the screw according to claim 1.
The screwing portion structure of a screw, characterized in that the interposing member is provided with an adhesive in at least one of the space between the waterproof sheet and the wood portion. The threaded portion structure of the screw according to claim 1 or 2.
The interposition member has a screw thread structure, characterized in that it is a rubber sheet. The threaded portion structure of the screw according to claim 3.
The rubber sheet has a screw thread structure having a core material inside. According to the screwed portion structure of the screw according to any one of claims 1 to 4.
A fixing structure of a fixed member, characterized in that a fixed member arranged in contact with the waterproof sheet is sandwiched and fixed between the screw and the fixed member.

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