JP4680650B2 - Airtight spacer, method for manufacturing the airtight spacer, and method for constructing a building using the airtight spacer - Google Patents

Description

The present invention relates to an airtight spacer provided between a foundation and a base when building a building such as a wooden house, a method for manufacturing the airtight spacer, and a method for constructing a building using the airtight spacer.

As a method of building a structure such as a wooden house, for example, a concrete foundation is made on the outer shell or inner shell of the part where the building is to be built, and then a base made of wood is fixed on the upper surface of the foundation. There is a method of standing a pillar on a wooden base and placing a beam on the pillar. Such a technique is a traditional Japanese architecture technique and is widely used in the construction of wooden houses.

Concrete foundations (cloth foundations) are made by mixing cement, sand, and water into a fluid or pre-assembled metal or wooden formwork and allowing them to solidify for a few days. Due to the characteristics of the concrete itself that contains and drains moisture in the long term, the wooden foundation absorbs moisture from the concrete foundation and makes it difficult to wet and dry at the contact area with the wooden foundation where the concrete foundation directly contacts. If the drying is inhibited, there is a problem that the wooden base is decayed over time.

In addition, at the entrance and bathroom, it is necessary to keep the indoor airtight so that outside air blown from outside does not enter the room, but with a structure in which a wooden base is simply placed on a concrete foundation, it is completely It is difficult to maintain airtightness, and outside air will enter the room.

Therefore, in order to ensure the airtightness of the parts that require airtightness as described above in the building and to prevent moisture from spreading from the foundation to the foundation, an airtight spacer has been conventionally provided between the foundation and the foundation. A method of arranging is proposed.
As such an airtight spacer, for example, in Patent Document 1, as shown in FIG. 6, a spacer body 31 made of a rectangular hard material and a full length in the longitudinal direction so as to protrude from the surface of the spacer body 31. And a thickened portion 32 formed on both sides of the spacer body 31 excluding the thin central portion 36 of the spacer body 31 is subjected to a bending facilitating process 34. An airtight spacer 30 is disclosed. Reference numeral 35 denotes an adjustment plate 35, and when there is a non-flat portion on the upper surface of the foundation 102, it is described that the adjustment plate 35 is inserted to fill a gap generated between the two.

Further, in Patent Document 2, as shown in FIG. 7, a main body made of two packing bodies 42 made of hard plastic and separated on the left and right sides, a plastic film 41 that connects the packing bodies 42, and a packing An airtight packing 40 including an elastic member 43 provided on the inner end edge of the split body 42 so as to protrude vertically from the packing split body 42 is disclosed.

JP 2004-190240 A JP 2005-23646 A

However, in the airtight spacer 30 disclosed in Patent Document 1, although the central portion 36 has a structure in which the thick portions 32 on both sides are connected, the central portion 36 has a narrow strip shape, A large opening is formed. Therefore, with the airtight spacer 30 disclosed in Patent Document 1, it has been difficult to completely prevent moisture from spreading from the foundation to the base.

Further, in the airtight packing 40 described in Patent Document 2, since the entire central portion is made of the film 41, it is possible to prevent the moisture from spreading up to some extent. However, the film 41 is offset to the upper side of the packing body 42. Therefore, when the airtight packing 40 is placed on the base 102 and the wooden base 103 is placed thereon, when the film 41 is pushed by the elastic material 41, the film 41 is broken. There was a fear.

The present invention has been made in view of the above-described points, and ensures airtightness in a room that requires airtightness in a building, prevents moisture from spreading from the foundation to the base, and is easily manufactured. An object of the present invention is to provide an airtight spacer that is excellent in strength, does not break, and the like and a method for manufacturing the same. Another object of the present invention is to provide a method for constructing a building using the airtight spacer.

In order to achieve the above object, the present invention provides the following.
(1) An airtight spacer provided between the foundation and the base,
On both sides excluding the central part of the belt-like film of a predetermined width, a thick part made of a thick member of an aspect that sandwiches and adheres the film and the film from the upper side and the lower side is provided,
An airtight spacer comprising an elastic portion made of an elastic member having a height higher than that of the thick portion along the inner surface of the thick portion.

Furthermore, the present invention provides the following.
(2) The airtight spacer of (1) above,
The thick member is characterized in that notches are formed at predetermined intervals substantially perpendicular to the length direction.

Furthermore, the present invention provides the following.
(3) The airtight spacer of (1) or (2) above,
The film is further extended to the outside through one thick part.

Furthermore, the present invention provides the following.
(4) The method for producing an airtight spacer according to any one of (1) to (3) above,
While moving the belt-shaped film in one direction at a predetermined speed,
While performing the extrusion of the thick member, the thick member extruded to adhere to the upper and lower parts on both sides excluding the central part of the film to form the thick part,
An airtight spacer characterized in that an elastic member having a height higher than that of the thick part is formed by closely contacting the elastic member from above and below along the inner surface of the thick part while performing extrusion molding of the elastic member. Manufacturing method.

Furthermore, the present invention provides the following.
(5) A construction method for a building in which an airtight spacer is provided between the foundation and the foundation,
While mounting the airtight spacer according to any one of (1) to (3) on the upper surface of the foundation, a hole is formed in a part of the central film portion by an anchor bolt provided on the foundation, A building construction method comprising: an airtight spacer placing step for inserting the anchor bolt through the film; and a base placing step for placing the foundation on an upper surface of the airtight spacer.

Furthermore, the present invention provides the following.
(6) A construction method for a building as described in (5) above,
As the airtight spacer, the airtight spacer described in (3) is used.
In the airtight spacer placing step, the airtight spacer is placed on the upper surface of the foundation so that the film extended further outside through one thick part is located inside the building,
After the base placement step, a step of performing a film sticking step of sticking a film extending further outward than one thick portion to a portion above the base is performed.

According to the invention of (1), since the elastic part made of an elastic member having a height higher than the thick part is provided along the inner surface of the thick part, the airtight spacer is placed on the foundation, When the wooden base is placed thereon, the elastic portion is in close contact with the upper surface of the foundation and the lower surface of the wooden base, blocking the intrusion of outside air, and ensuring the airtightness of the room in the corresponding part.

Further, the central portion of the hermetic spacer of the present invention is formed of a film, and this film is provided in the middle in the thickness direction (vertical direction). Even when the wooden base is placed, the pressure applied to the film by the elastic portion is not so large, the film is not broken, and the strength is excellent.
In addition, the film in the central part is provided over the entire length direction, and by forming a small hole only in the part where the anchor bolt is inserted, moisture oozes from the foundation to the base completely. Can be prevented.

According to the invention of (2), since the notch portions are formed at a predetermined interval substantially perpendicular to the length direction, the portions can be bent, whereby the hermetic spacer of the present invention. Can be wound or folded in the longitudinal direction, and handling becomes easy.

According to the invention of (3), since the film is further extended to the outside through one thick part, the extended film is placed when the hermetic spacer of the present invention is placed on the foundation. After the installation is completed, the film can be lifted above the wooden base and attached to the inner wall above the wooden base to completely shut out the outside air. Further, the airtightness in the room can be further improved.

According to the invention of (4), a thick member produced by utilizing an extrusion method is applied to a pre-manufactured film as it is, and the thick portion is formed by closely contacting the film from above and below the film. Thus, the elastic member is formed in close contact with the film from the top and bottom of the film to form the elastic portion. Therefore, the airtight spacer can be manufactured relatively easily in a short time, and the cost can be kept low.

According to the invention of (5), after placing the airtight spacer on the foundation, a small hole is formed in a part of the central film portion, the anchor bolt is inserted through the film, and the wooden base is placed thereon. Therefore, the airtight spacer can ensure airtightness and completely prevent moisture from spreading from the foundation to the base.

According to the invention of (6), since the outside air can be completely blocked by the film attached to the inner wall or the like in the film attaching step, the indoor airtightness can be further improved.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Of course, the present invention is not limited to the following embodiments, and it is possible to make design changes as appropriate within a range that satisfies the configuration of the present invention.

[First Embodiment]
First, the airtight spacer according to the first embodiment of the present invention will be described.
FIG. 1A is a cross-sectional view schematically showing an example of an airtight spacer according to the first embodiment of the present invention, and FIG. 1B is a plan view of the airtight spacer. 2 is a cross-sectional view of the thick portion of the airtight spacer shown in FIG. 1 cut in parallel to the length direction.

As shown in FIG. 1 (b), the airtight spacer 10 is formed in a band shape, and is provided on both sides of the film part 13 and the film part 13 consisting only of the film 23 provided in the center in the width direction. A thick part 11 composed of two thick members 21 having substantially the same thickness provided in such a manner that the film 23 and the film 23 are sandwiched and bonded from above and below, and along the inner surface of the thick part 11 It is comprised from the elastic part 12 in which the elastic member 22 whose height is higher than the thick part 11 was formed.

In the elastic part 12 constituting the airtight spacer 10 shown in FIG. 1, the elastic member 22 has a hollow, substantially elliptical columnar elastic part 22 in which air is sealed, and is bonded from above and below the film 23. The height in the vertical direction is higher than the height of the thick portion 11. In the elastic part 12 shown in FIG. 1, the elastic member 22 is directly bonded to the film 23 from above and below the film 23, but the elastic member 22 may be directly bonded only to the thick member 21.

The thick portion 21 has a form in which plate-like bodies having the same thickness are in close contact with the upper and lower sides of the film 23, and is positioned for the convenience of positioning at the time of construction at a certain distance from the outside of both the front and back surfaces. The grooves 14 are formed in parallel to the length direction, and the temporary fastening recesses 16 used for temporary fastening during construction are formed at predetermined intervals in the length direction.

Further, as shown in FIG. 2, the thick member 21 is formed with notches 15 on both the front and back surfaces at a predetermined interval substantially perpendicular to the length direction. For this reason, the airtight spacer 10 can be wound or folded in the longitudinal direction, and the airtight spacer 10 can be easily handled.

The dimension of the airtight spacer 10 is set as follows, for example. That is, for example, the width of the airtight spacer 10 is 102 mm, the width of the film portion 13 is 37 mm, the height of the thick portion 11 is 4 mm, and the height of the elastic portion 12 is 20 mm. The thickness of the film 23 can be set to 0.2 mm, and the thickness of the elastic member 22 can be set to 0.8 mm. However, the dimensions of the spacer of the present invention are not limited to the above dimensions. The same applies to the following.

Although the material of the film 23 and the elastic member 22 which comprise the airtight spacer 10 is not specifically limited, For example, a polypropylene, polyethylene, an acrylonitrile butadiene styrene resin (ABS), a polyvinyl chloride, nylon etc. are mentioned, for example. be able to. Further, as the resin material, for example, a rubber material such as natural rubber (NR), styrene-butadiene rubber (SBR), chloroprene rubber (CR), or a thermoplastic elastomer may be used. These materials may be used alone or in combination of two or more.

Although it does not specifically limit as a material of the thick member 21, For example, the material mentioned as the material of the film 23, what added the various filler to the material, etc. are mentioned. The filler is not particularly limited, and examples thereof include calcium carbonate, hydrous magnesium silicate, stone powder, concrete powder, blast furnace slag, fly ash and the like. The blending weight ratio between the resin material and the inorganic material is preferably 1: 0.1 to 1: 3. Further, for example, a plasticizer such as phthalate ester or dibutyl phthalate may be added.

The hermetic spacer of the present invention is formed using the above-mentioned material, has excellent mechanical properties, has appropriate elasticity, is placed on the upper surface of a concrete foundation, and has a wooden base on the hermetic spacer. Even if it is placed and tightened with an anchor bolt, the elastic part and other places do not break and can be used satisfactorily.

When constructing a building using the hermetic spacer of the present invention, an airtight spacer cut into a predetermined length may be used, and a site where a long airtight spacer with a wound shape is constructed is used. It is good also as cutting and using suitably so that it may match length of.

Next, the construction method of the building of this invention using the airtight spacer which concerns on 1st Embodiment is demonstrated.
The construction method according to the present invention is a construction method for a building in which an airtight spacer is provided between a foundation and a foundation,
An airtight spacer placing step of placing the airtight spacer on the upper surface of the foundation and forming a hole in a part of a central film portion by an anchor bolt provided on the foundation, and inserting the anchor bolt into the film. And a foundation placing step of placing the foundation on the upper surface of the hermetic spacer.

FIG. 3 is a cross-sectional view showing a construction method for a building of the present invention using the above airtight spacer. Since this construction method can be described relatively simply, it will be described with reference to one drawing.

In this construction method, first, an airtight spacer placing step of placing the airtight spacer 10 on the upper surface of the concrete foundation 102 is performed.
At this time, the airtight spacer 10 is placed so that the outer surface of the thick portion 11 of the airtight spacer 10 is substantially flush with the outer surface of the concrete foundation 102.
Since no hole is formed in the film portion 13 of the airtight spacer 10, the anchor bolt 110 cannot be inserted as it is. Therefore, the film 23 is broken and the anchor bolt 110 is inserted, but if the anchor bolt 110 is penetrated as it is, large holes and cracks are formed in the film 23, and moisture oozes from the concrete foundation 102 to the wooden base 103. Can not be prevented.

Therefore, in order to easily form a small hole in a part of the film 23 when the anchor bolt 110 is inserted, a non-through groove that can be broken is previously formed in the film 23 at a certain interval. It is desirable to keep it. The breakable non-penetrating groove is formed in a portion through which the anchor bolt 110 is inserted, and when the film 13 is pushed with the anchor bolt 110, a small hole is easily formed.

In this way, by performing the above-described processing on the film 23 in advance, it is possible to form a small hole through which the anchor bolt 110 is inserted only by passing the anchor bolt 110 through the film 23 at the time of construction. It is possible to prevent moisture from spreading from the base 102 to the wooden base 103.

Next, a base placing step is performed, the wooden base 103 is placed on the airtight spacer 10, and a nut (not shown) is screwed onto the anchor bolt 110 and tightened.
In the airtight spacer 10 according to the present embodiment, the elastic portion 12 is higher than the thick portion 11. Therefore, when the nut (not shown) is screwed into the anchor bolt 110 and tightened, the elastic portion 12 becomes concrete. Since it is in close contact with the upper surface of the foundation 102 and the lower surface of the wooden base 103 and completely blocks the intrusion of outside air, it is possible to ensure indoor airtightness.

At that time, a force is equally applied to the film 23 from the upper and lower elastic portions 12, and the film 23 is formed in the middle in the vertical direction, so even if pressure is applied from the upper wooden base 103, the film 23 23 does not break.

Next, the manufacturing method of the airtight spacer of this invention is demonstrated easily.
The method for producing an airtight spacer according to the present invention is a method for producing the above airtight spacer,
While moving the belt-shaped film in one direction at a predetermined speed,
While performing the extrusion of the thick member, the thick member extruded to adhere to the upper and lower parts on both sides excluding the central part of the film to form the thick part,
Further, the elastic member is closely contacted from above and below along the inner surface of the thick portion while the elastic member is being extruded to form an elastic portion having a height higher than that of the thick portion.

Hereinafter, although the manufacturing method of the said airtight spacer is demonstrated concretely, the manufacturing method of the airtight spacer of this invention is not limited to the following specific example, In the range of description of an above-described manufacturing method, various. A manufacturing method can be applied.

In the present invention, a film having a predetermined width is formed in advance and used as the film 23 (see FIG. 1) of the airtight spacer 10 according to the above embodiment. The method for producing the film is not particularly limited, and a conventionally known method for producing a plastic film, such as extrusion molding, can be applied.

Next, for example, by using a method in which two rollers are placed at regular intervals and the film wound around one roller is wound around the other roller, the belt-like film is moved at a predetermined speed. Provide equipment that can be moved in one direction.

Next, in the course of running the film 23 at a constant speed, an extrusion molding facility was provided, and while the thick member was being extruded, the meat was extruded from above and below on both sides except for the central portion of the film. The thick part 21 is formed by bonding the thick member 21. By synchronizing the extrusion speed of extrusion and the traveling speed of the film, the extruded thick member 21 can be brought into close contact with the top and bottom of the film 23 as it is.

The positioning groove 14 can be formed by making the shape of the die into a shape in which the groove is formed when performing extrusion molding.
As the extrusion molding equipment, conventionally known extrusion molding equipment can be used. As a method of making it adhere, the method of making it adhere | attach by pushing the material of the high temperature immediately after extrusion molding to a film may be taken, and adhesion | attachment using an adhesive agent may be used together.

Next, as in the case of the thick member, the elastic member is closely attached to the film from above and below along the inner surface of the thick portion while the elastic member is extruded, and the height is higher than the thick portion. An elastic part is formed. When extruding the elastic member, it is necessary to perform the molding so that the inside of the elastic member is hollow. Therefore, the die is formed in a hollow shape, and a predetermined pressure is applied to the inside of the extruded hollow elastic member. Extrusion is performed while air is fed from the inside of the die so that the air is sealed. As a method for adhering to the film, a method of adhering by pressing a high temperature material immediately after extrusion molding onto the film may be used, or adhesion using an adhesive may be used in combination.

Regarding the formation of the notch portion 15, for example, after forming the thick portion 11, the partially protruded roller is rotated in synchronization with the film traveling speed, and the protruding portion is pressed against the thick portion 11. be able to.

[Second Embodiment]
Next, an airtight spacer according to a second embodiment of the present invention will be described.
FIG. 4A is a cross-sectional view schematically showing an example of an airtight spacer according to the second embodiment of the present invention, and FIG. 4B is a plan view of the airtight spacer.

The airtight spacer 20 according to the second embodiment shown in FIG. 4 is the same as the airtight spacer according to the first embodiment shown in FIG. 1 except that the film 23 extends outside the thick portion 11. It is comprised similarly, The material and dimension of a structural member are also the same. In addition, although 400 mm is mentioned as a width | variety of the part extended outside the thick part 11 of the film 23, for example, It is not limited to this dimension.
Since the configuration of the airtight spacer according to the first embodiment has been described in detail as described above, a detailed description of the configuration of the airtight spacer 20 according to the second embodiment will be omitted here.

When the airtight spacer 20 according to the second embodiment is placed on the foundation and the wooden base is placed thereon, the elastic portion 12 is in close contact with the upper surface of the concrete foundation and the lower surface of the wooden foundation, and the intrusion of outside air is completely performed. It can block and secure the air tightness of the room of the part concerned. Further, the film 23 in the central portion is provided over the entire length direction, and a small hole can be formed only in the portion through which the anchor bolt is inserted, so that moisture oozes from the foundation to the base. Can be completely prevented.

Furthermore, in the airtight spacer 20 according to the second embodiment, since the film 23 is further extended to the outside through one thick portion, when placing the airtight spacer of the present invention on the foundation, It is possible to completely block outside air by placing the extended film 23 so as to be inside the building, lifting the film 23 above the wooden base, and attaching the film 23 to an inner wall or the like above the wooden base. The airtightness in the room can be further improved.

Since the manufacturing method of the hermetic spacer according to the second embodiment is substantially the same as the manufacturing method of the hermetic spacer according to the first embodiment, detailed description thereof will be omitted here.

Next, the construction method of the building using the airtight spacer which concerns on 2nd Embodiment is demonstrated.
The construction method of the building according to the second embodiment is
A construction method for a building in which an airtight spacer is provided between a foundation and a foundation,
As the airtight spacer, the airtight spacer according to the second embodiment is used,
In the airtight spacer placing step, the airtight spacer is placed on the upper surface of the foundation so that the film extended further outside through one thick part is located inside the building,
After the base placement step, a step of performing a film sticking step of sticking a film extending further outward than one thick portion to a portion above the base is performed.

FIG. 5 is a cross-sectional view showing a construction method for a building according to the present invention using the airtight spacer.
In the present construction method, as in the construction method using the airtight spacer according to the first embodiment, first, the airtight spacer placement step is performed, and the airtight spacer 20 is placed on the upper surface of the concrete foundation 102 to form a film. A small hole is formed in 23 and the anchor bolt 110 is inserted.

Next, a base placing step is performed, the wooden base 103 is placed on the airtight spacer 10, and a nut (not shown) is screwed onto the anchor bolt 110 and tightened. Thereby, since the elastic part 12 closely_contact | adheres to the upper surface of the concrete foundation 102, and the lower surface of the wooden base 103, the penetration | invasion of external air is interrupted | blocked, indoor airtightness can be ensured.

Then, a film sticking process is performed, and the film 23 extending further outward than the one thick portion 11 is stuck to a portion above the wooden base 103. Thereby, the external air which penetrate | invades from parts other than between the concrete foundation 102 and the wooden base 103 can be interrupted | blocked completely, and indoor airtightness can further be improved.

(A) is sectional drawing which shows typically the airtight spacer which concerns on 1st Embodiment of this invention, (b) is the top view. It is sectional drawing which shows a mode that the airtight spacer 10 shown in FIG. 1 was cut | disconnected in the length direction. It is sectional drawing which shows the construction method of the building using the airtight spacer which concerns on 1st Embodiment of this invention. (A) is sectional drawing which shows typically the airtight spacer which concerns on 2nd Embodiment of this invention, (b) is the top view. It is sectional drawing which shows the construction method of the building using the airtight spacer which concerns on 2nd Embodiment of this invention. It is sectional drawing which shows the construction method of the building using the conventional airtight spacer. It is a perspective view which shows typically an example of the conventional airtight packing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10, 20 Airtight spacer 11 Thick part 12 Elastic part 13 Film part 14 Positioning groove 15 Notch part 16 Temporary fixing concave part 21 Thick member 22 Elastic member 23 Film 102 Concrete foundation 103 Wooden base

Claims (6)

An airtight spacer provided between the foundation and the foundation,
On both sides excluding the central part of the belt-like film of a predetermined width, a thick part made of a thick member of an aspect that sandwiches and adheres the film and the film from the upper side and the lower side is provided,
An airtight spacer comprising an elastic portion made of an elastic member having a height higher than that of the thick portion along the inner surface of the thick portion. The hermetic spacer according to claim 1, wherein the thick member is formed with notches at a predetermined interval substantially perpendicular to the length direction thereof. The hermetic spacer according to claim 1, wherein the film is further extended outward through one thick portion. It is a manufacturing method of the airtight spacer in any one of Claims 1-3,
While moving the belt-shaped film in one direction at a predetermined speed,
While extruding the thick member, forming the thick part by bonding the thick member extruded to the upper and lower parts on both sides excluding the central part of the film,
An airtight spacer characterized in that an elastic member having a height higher than that of the thick part is formed by closely contacting the elastic member from above and below along the inner surface of the thick part while performing extrusion molding of the elastic member. Manufacturing method. A construction method for a building in which an airtight spacer is provided between a foundation and a foundation,
The airtight spacer according to any one of claims 1 to 3 is placed on an upper surface of the foundation, and a hole is formed in a part of a central film portion by an anchor bolt provided on the foundation. An airtight spacer mounting process for inserting the film through the film,
A building construction method comprising a foundation placing step of placing the foundation on an upper surface of the airtight spacer. As the airtight spacer, the airtight spacer according to claim 3 is used,
In the airtight spacer placing step, the airtight spacer is placed on the upper surface of the foundation so that the film extended further outside through one thick part is positioned inside the building,
The building construction method according to claim 5, wherein a film pasting step of pasting a film extending further outward than one thick portion on a portion above the base is performed after the base placing step.

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