JP3234549B2 - Jointing method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for applying a joint material for sealing joint grooves such as a joint of a wall material of a building.

[0002]

2. Description of the Related Art A joint material filled with a sealing material is inserted into a joint groove opening, and a core material is press-fitted into the joint material. A joint material which is made to flow from both sides to both sides of the core material is disclosed in Japanese Utility Model Laid-Open No. 4-132104.

[0003] However, in the case where the bottom plate of the joint base material is directly adhered and fixed to the bottom surface of the joint groove as in the above-mentioned joint material, the installation becomes difficult when the depth of the joint groove is increased. Not only does the sealing material flow out when the core material is press-fitted, but also flows into a narrow space surrounded by the sealing tongue pieces above the joint base material, the core material, and the inner wall of the joint groove. Therefore, as the width of the joint groove becomes narrower, the sealing material cannot fit in the narrow space,
As a result, the core material may protrude from the side to the outside, and it is not possible to sufficiently cope with variations in the width of the joint groove.

Further, the joint material is fixed not only to the bottom surface of the joint groove but also to both side walls by a sealing material, so that three adjacent surfaces are fixed in the joint groove. Therefore, the degree of freedom with respect to the relative displacement of the adjacent outer wall materials is extremely small, and if the adjacent outer wall materials are displaced from each other due to an earthquake or the like, a part of the sealing material is separated from the joint groove. Or, there is a possibility of breaking in the joint groove.

[0005]

The technical problem of the present invention is that the joint material can be installed in the joint groove opening while maintaining a proper posture regardless of the depth and width of the joint groove.
By ensuring that an extra sealing material storage area can be secured in response to variations in the width of the joint groove, the sealing material is prevented from protruding outside the joint groove due to press-fitting of the core material. It is an object of the present invention to provide a construction method capable of reliably sealing a joint groove by using a joint material capable of obtaining an effective sealing effect with a wall. Another technical problem of the present invention is that, when constructing a joint material to a required depth in a joint groove, by suppressing excessive pressing of the joint base material, the joint material can be easily constructed. In addition, the outer surface of the jointing material can be set independently, and the surface can be set to a uniform depth (height) as a whole without any unevenness on the surface of the exterior material of the building. It is in.

[0006]

A method of the present invention for solving the above-mentioned problems is to provide a joint base material formed into a substantially U-shaped cross section by left and right side plates and a bottom plate made of a synthetic resin. Filled between both side plates, having a sealing material having fluidity and viscosity, and a core material that is press-fitted between the both side plates of the joint base material, the joint base material is provided on outer surfaces of left and right side plates. At least two soft sealing tongues are projected from each other, and a plurality of holes are formed between the sealing tongues on both side plates. With the press-fitting of the core material between the side plates, a method of sealing a joint groove by pressing out a sealing material from a large number of holes drilled in the side plate,
A step of fitting and holding a stopper for setting the fitting depth of the joint base; fitting the joint base into the joint groove at a position where the bottom plate of the joint base comes into contact with the stopper; A step of holding the core material inside the joint; press-fitting the core material between the left and right side plates of the joint base material inserted into the joint groove to the extent that the tip does not reach the bottom plate of the joint base material, and press-fitting the core material The sealing material filled between the both side plates is pressed out from a hole formed in the side plates, and the pressed sealer is pressed out.
The sealing material is surrounded by a pair of sealing tongues and the inner wall of the joint groove.
Fill the space to be filled, and fill the remaining sealant with the joint
The sealing tongue on the side is pushed open and the head of the core material and the sealing tongue are
And covering the joint groove with the core material head.

In the joint material applying method, when the joint base material is inserted into the joint groove, the seal tongue piece protruding from the outer side surface of the side plate of the joint base material is subjected to the joint by friction with the inner side wall of the joint groove. The base material can be held in the joint groove mouth, and a joint base material in which locking flanges that lock to the edge of the joint groove project from both sides of the side plate can be used. Furthermore, a lid is inserted into the opening between both side plates of the joint base material to prevent the sealing material from flowing out by fitting into the joint, and to prevent deformation of the joint base material when fitting the joint base material into the joint groove. In the step of press-fitting the core material between the side plates of the joint base material using the joint material, the cover material is pressed by the core material so that the tip of the cover body does not reach the bottom plate of the joint base material. Can be press-fitted.

When the joint material is applied, the fitting depth of the joint material is first set by a stopper which is discretely fitted and held in the joint groove, so that the joint material projects from the outer side surface of the side plate. Friction between the installed seal tongue and the inner surface of the joint groove,
Alternatively, even if the locking of the locking flange to the edge of the joint groove is incomplete, the pushing limit is set by the stopper, and the locking flange is not excessively pushed into the joint groove.

Next, the joint base material is fitted into the joint groove mouth portion. At this time, if the seal tongue pieces protruding from the outer side surfaces of both side plates of the joint base material have a certain degree of strength, the seal base material is not used. Bring the tongue into frictional contact with the inner wall of the joint groove,
Alternatively, in the joint base material provided with the locking flange portion, the locking flange portion may be locked to the edge of the joint groove, and may be inserted to an appropriate position as far as the contact position with the stopper as a limit. . In this case, the joint base material may be inserted to a position where the bottom plate abuts the stopper, but may be inserted to an appropriate position where the bottom plate does not reach the stopper. And the said joint base material is based on the structure mentioned above,
Regardless of the depth of the joint groove, its positioning is easy,
In addition, the posture of the joint base material can be appropriately maintained in the joint groove mouth.

When a core material is press-fitted between both side plates with the joint base material inserted into the joint groove, a sealing material is pressed out from a hole formed in a side plate of the joint base material. The space surrounded by the pair of seal tongues and the inner wall of the joint groove is filled, and the remaining sealing material pushes and spreads the seal tongue on the mouth side of the joint groove, and the head of the core material, the seal tongue, , The sealing material does not protrude outside the joint material due to variations in the width of the joint groove. That is, when the sealing tongue piece is press-fitted with the joint base material, the inner surface side is in close contact with the inner side wall of the joint groove and is bent toward the mouth, so that the temporarily pressed sealing material is a pair of the sealing material. Even if the sealing material does not fit between the sealing tongues, the sealing material flows out to the mouth from between the sealing tongue on the mouth side and the inner wall of the joint groove, so that the inside of the joint groove, which is difficult to push and expand due to bending, is difficult. The sealing material does not flow inward from between the seal tongue on the side and the inner wall of the joint groove, and the sealing material can be effectively used for sealing the joint groove. Variations can be adequately dealt with.

In the press-fitting of the core material, the joint base material can be pressed together with the core material to an appropriate position even if the joint base material is not inserted to the position where it comes into contact with the stopper as described above. In that case, the joint base material is not excessively pressed in due to the presence of the stopper. In addition, since the core is formed so that the tip of the core does not reach the bottom plate of the joint base material, the tip of the core is strong against the bottom plate of the joint base when press-fitting the core material. Since the pressing force is always transmitted via the sealing material without being pressed, there is no possibility that the joint base material is damaged and a partial sealing failure is not caused. In order to fit the head surface of the core material into the joint groove at a certain depth, it is only necessary to adjust the press-fitting depth at the time of press-fitting the core material. For example, while pressing the side plate of the joint base material with the core material, it may be pressed together with the joint base material, and the depth (height) of the head surface of the core material in the joint groove can be easily adjusted.

The joint material constructed according to the joint material construction method of the present invention is not fixed to the bottom surface of the joint groove of the bottom plate of the joint base material, but is subjected to relative displacement of an adjacent outer wall material due to vibration such as an earthquake. Since it is possible to have a degree of freedom, it is possible to prevent the outer wall materials from being separated from the joint groove mouth or being broken in the joint groove mouth even if the adjacent outer wall members move to each other.

As described above, according to the present invention, the joint material can be installed by a simple operation of fitting the joint material into the joint groove and press-fitting the core material between both side walls of the joint material. Can,
In addition, the joint material can be mounted in the joint groove opening while maintaining an appropriate posture regardless of the depth and width of the joint groove. In addition, since the area for storing extra sealing material is secured in response to variations in the width of the joint groove, the sealing material does not protrude outside the joint material due to press-fitting of the core material. Therefore, an effective sealing effect between the joint groove and the inner wall can be obtained by effectively using the sealing material.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for constructing a joint material according to the present invention will be described below in detail with reference to the drawings.
Shows a first embodiment of the present invention. In FIG. 1, 2
Reference numeral 4 denotes a joint material for sealing joint grooves such as a joint portion of a wall exterior material of a building. Reference numeral 4 denotes a stopper for setting a depth of the joint material 2 into the joint groove of the joint material 2.

The joint material 2 is roughly composed of a joint material 6, a sealing material 8, a core material 10, and a lid 12, and an opening between the side plates 14, 14 in the joint material 6. The lid 16 for preventing the sealing material 8 filled between the both side plates 14, 14 from flowing out is inserted into the portion 16.

As shown clearly in FIGS. 2 and 3, the joint base material 6 includes left and right side plates 14, 1 made of a hard synthetic resin.
4 are connected to each other by a bottom plate 18 integral therewith and formed into a substantially U-shaped cross section. Above and below the outer surface of each side plate 14, a pair of sealing tongue pieces 20a made of a soft synthetic resin integral therewith are provided. 20b is protruded. The bottom plate 18
If necessary, it can be formed integrally with the side plate 14 using a soft synthetic resin. The space between the side plates 14, 14 is filled with a sealing material 8 having fluidity and viscosity, and the sealing tongue pieces 20 on the side plates are filled.
a, 20b, between the two side plates 14, 14;
Of the sealing material 8 into a space S1 surrounded by the pair of sealing tongue pieces 20a and 20b and the inner wall W of the joint groove. Are formed at equal intervals in the longitudinal direction and in a plurality of rows. In the holes 22 in the adjacent rows, each hole 22 is located between two holes 22 adjacent to each other in the longitudinal direction of the joint base material 6 in the adjacent row, and slightly overlaps with the holes 22 in the adjacent row. It is arranged to have.
As a result, the sealing material 8 is substantially uniformly extruded in the longitudinal direction of the joint base material 6.

The sealing material 8 is pressed out into a space S1 surrounded by a pair of sealing tongue pieces 20a, 20b and the inner wall W of the joint groove, that is, an appropriate amount corresponding to the case where the width of the joint groove is relatively large. Enough to be filled and sealed there,
The core material 10 is filled between the both side plates 14 and 14 of the joint base material 6 and is made of a rubber-based or synthetic resin-based elastomer such as butyl rubber or silicon.
When it is pressed between the side plates 14, 14 of the joint base 6, it is necessary to have fluidity and viscosity such that it is pressed out from the hole 22 of the side plate 14. Since the sealing material is kept concealed by the head 10b of the core material 10 as described later, a material that is relatively soft and does not harden over time is suitable. Then, a release sheet 24 covering the holes 22 of the side plates 14 and 14 is previously adhered to the joint base material 6 filled with the sealing material 8, and after filling, an opening is formed on the upper part of the joint base material 6. A lid 12 that fits into the opening 16 between the side plates 14 and 14 to prevent outflow of the sealing material 8 and at the same time suppresses deformation of the joint base 6 when the joint base 6 is fitted into the joint groove. Is inserted.

As shown in FIG. 1, the core member 10 is formed of a relatively hard synthetic resin into a substantially T-shaped cross section, and the core portion 10a is formed on both side plates 14, 14 of the joint base material 6. It is formed into a plate shape having a thickness substantially equal to the width between them, and has such a length that the tip of the lid 12 does not reach the bottom plate 18 of the joint base material 6 when the lid 12 is pressed while being pressed. Sealing material 8 formed in the left and right spaces S1
Is connected between the tip of the lid 12 and the bottom plate 18 of the joint base material 6 so that the reliability of the seal can be maintained. The head 10b of the core material 10 is a decorative plate 26 that covers the joint groove opening to cover the joint.
The decorative plate 26 is formed by integrally attaching a weather-resistant soft synthetic resin. In order to make it easier to press-fit the lid 12 with the core material 10, a concave portion and a convex portion that engage with each other are formed on the tip of the core portion 10 a of the core material 10 and the upper end surface of the lid 12. Parts can also be provided.

Further, both side plates 1 of the joint base material 6 are formed.
The core 10 is press-fitted between the side plates 14, 14 of the joint base material 6 at the rims of the inner surfaces of the cores 4, 14 and the base end of both sides of the core 10 a of the core 10. At this time, engaging portions 28 and 30 that engage with each other are formed.

Before the joint member 2 is applied, the lid 12 is provided with engaging portions 32 formed on both side surfaces thereof, and engaging members 32 formed on the inner side surfaces of both side plates 14, 14 of the joint base material 6. The joint 28 is held in the mouth 16 of the both side plates 14, 14 by mutually engaging the joint 28. The lid 12 prevents the sealing material 8 from flowing out from the opening 16 between the side plates 14, 14 of the joint base 6, and at the same time when the joint base 6 is fitted into the joint groove. The reaction force when the sealing tongue pieces 20a, 20b projecting from the outer surfaces of the both side plates 14, 14 come into frictional contact with the inner side wall W of the joint groove is used.
4, 14 are pushed inward, whereby both side plates 14, 1
The narrowing of the opening 16 between the four prevents the sealing material 8 from flowing out and hindering the press-fitting of the core material 10. The manner in which such a lid 12 is inserted into the mouth 16 of the joint base 6 depends on the material of the joint base 6, the material of the sealing material 8, and the like.
Is effective in the case where is molded from a relatively flexible material.

The stopper 4 is for setting the fitting depth of the joint base material 6 and, as clearly shown in FIGS. 1 and 4, is formed in a substantially U-shape by a metal plate spring having a spring property. It is formed by bending, and a flange-shaped locking portion 3 having teeth at the tip portions of the left and right side plates 34 to be locked to the inner wall W of the joint groove.
6 is bent. The left and right side plates 34 of the stopper 4 apply an urging force enough to be fitted and held by locking the distal end of the locking portion 36 to the inner wall W of the joint groove.

When the joint material 2 is constructed by the construction method of the present invention, first, the stopper 4 is discretely fitted and held in the joint groove. The stopper 4 is inserted using a tool T that can be inserted into the joint groove at a certain depth based on the surface of the building exterior material. As the tool T, for example, as shown by a chain line in FIG. The two side plates 34 are sandwiched by a pair of sandwiching members through the notch 38 in the stopper 4 of FIG. 4, and the stopper T is jointed by the tool T until the insertion position regulating contact portion t contacts the surface of the exterior material. By releasing the stopper 4 at that position,
The locking portion 36 is fixed to the joint groove inner side wall W by the spring property of the stopper 4 itself.
Is used so that the stopper 4 can be inserted and held at a predetermined depth. Note that the stopper 4 shown here is merely an example, and any other structure that can be locked in the joint groove can be used. The engagement depth of the joint base material 6 is set by the plurality of stoppers 4 held in the joint grooves in this manner, so that the joint base material 6 is provided with the seals protruding from the outer side surfaces of the both side plates 14, 14. Even if the tongue pieces 20a and 20b are incompletely in frictional contact with the joint groove inner wall W, the stopper 4 sets the pushing limit, so that the joint is not excessively pushed into the joint groove.

Next, the joint base material 6 is fitted into the joint groove mouth portion.
4, on the sealing tongue pieces 20a, 20b protruding from the outer surface of
The seal tongue pieces 20a and 20b have strength enough to be held in the joint groove only by frictional contact between the joint groove inner wall W and the joint tongue piece 20a, 20b. If it is inserted to the position, the position of the joint base material 6 is set naturally. In this case, the joint base material 6 is provided on the bottom plate 1.
8 may be inserted until it comes into contact with the stopper 4,
There is no problem if the bottom plate 18 is inserted to an appropriate position where it does not reach the stopper 4. And the joint base material 6
Based on the above-described configuration, positioning is easy regardless of the depth of the joint groove, and the posture of the joint base material 6 can be appropriately held in the joint groove opening.
If the sealing tongue pieces 20a and 20b of the joint base 6 need strength enough to be held in the joint groove only by frictional contact with the joint groove inner side wall W, the joint base 6 is brought into contact with the stopper 4. Insert.

When the core material 10 is press-fitted between the side plates 14 and 14 with the joint base material 6 inserted into the joint groove, the sealing material 8 is removed from the holes 22 formed in the side plates 14 of the joint base material 6. The sealing material 8 is pressed out, and is filled in a space surrounded by the pair of sealing tongue pieces 20a and 20b and the inner wall W of the joint groove, and the remaining sealing material 8 is sealed at the mouth side of the joint groove. 20a is spread out and flows into the space between the head 10b of the core material 10 and the sealing tongue piece 20a, so that the sealing material 8 may protrude outside the joint material 2 due to variations in the width of the joint groove. Absent. That is, when the joint base material 6 is press-fitted, the seal tongue pieces 20a and 20b are in a state in which the inner surface side is in close contact with the inner wall W of the joint groove and is bent toward the mouth portion, and thus, the seal tongue pieces 20a and 20b are temporarily pressed out. Even if the sealing material 8 does not fit between the pair of sealing tongue pieces 20a and 20b,
The sealing material 8 flows to the mouth from between the sealing tongue piece 20a on the mouth side and the inner side wall W of the joint groove, and the sealing tongue piece 20b on the inner side of the joint groove, which is difficult to push and expand due to the curvature, and the joint. The sealing material 8 does not flow inward from between the inner wall W of the groove and the sealing material 8 can be effectively used for sealing the joint groove. Can respond.

At the time of press-fitting the core material 10, even if the joint base material 6 is not inserted to the position where it comes into contact with the stopper 4 as described above, the joint material 6 is pressed together with the core material 10 to an appropriate position. In this case, the joint base 6 is not excessively press-fitted due to the presence of the stopper 4. Further, since the core 10 is formed so as to be press-fitted within a range in which the tip of the core 10a does not reach the bottom plate 18 of the joint base 6, the tip of the core 10a is jointed when the core 10 is press-fitted. Since the pressing force is always transmitted via the sealing material 8 without being strongly pressed against the bottom plate 18 of the base material 6, damage to the joint base material 6 and partial sealing failure caused by the damage may occur. Absent. In order to insert the surface of the head 10b of the core material 10 into the joint groove at a constant depth, the press-fitting depth may be adjusted when the core material 10 is press-fitted. If the depth is shallow, the joint material 6
It is only necessary to press the side plate 14 together with the joint base material 6 while pressing the side plate 14, and the head 10 of the core 10 in the joint groove can be easily formed.
b The depth (height) of the surface can be adjusted.

The joint material constructed by the joint material constructing method of the present invention is not fixed to the bottom surface of the joint groove of the bottom plate 18 of the joint base material 6, but the relative strength of the adjacent outer wall material due to vibrations such as earthquakes. Since it can have a degree of freedom for displacement,
Even if adjacent outer wall materials are shifted from each other, they can be prevented from peeling from inside the joint groove mouth or breaking inside the joint groove mouth.

Thus, according to the present invention, the joint substrate 6
Into the joint groove, and the both side plates 14, 14 of the joint base material 6.
The joint material 2 can be constructed by a simple operation of press-fitting the core material between the joint materials, and the joint material 2 is maintained in a proper posture in the joint groove mouth portion regardless of the depth and width of the joint groove. Can be installed. In addition, since an extra area for accommodating the sealing material 8 is secured in accordance with the variation in the width of the joint groove, the sealing material 8 does not protrude outside the joint material 2 by press-fitting the core material 10. By effectively using the sealing material 8 for sealing the joint groove, an effective sealing effect between the joint groove and the inner wall W of the joint groove can be obtained.

Next, FIGS. 5 and 6 show a second embodiment of the present invention. The joint material 2 in the second embodiment is
As shown in FIGS. 5 and 6, locking flanges 40, 40 made of hard synthetic resin for locking to the rims of the joint grooves are integrated with the upper ends of the left and right side plates 14, 14 of the joint base 6. It is provided in a special way.

The remaining main structure of the joint 2 in the second embodiment is substantially the same as that of the first embodiment. In addition, since the locking flange 40 is locked to the edge of the joint groove, the seal tongue pieces 20a and 20b do not need to be formed to a sufficient frictional force with the joint groove inner wall W.

When the joint material 2 of the second embodiment having the above-described configuration is applied, similarly to the first embodiment, first, a plurality of stoppers 4 are discretely fitted and held in the joint groove, and then the joint is joined. The base member 6 is fitted into the joint groove mouth portion. At this time, the locking flange 40 provided at the upper end of the both side plates 14, 14 of the joint base member 6 is locked to the joint edge of the joint groove and the sealing tongue is provided. Since the pieces 20a and 20b are in frictional contact with the inner wall W of the joint groove, regardless of the depth of the joint groove, the joint base material 6 may be used.
Positioning and posture holding can be performed more reliably. The stopper 4 effectively functions to suppress excessive insertion when the joint groove is partially deformed (dropped) at an edge portion thereof or when the joint base material 6 is excessively pushed in.

Here, the joint material 2 in the second embodiment is used.
Since the other configuration and operation, and the construction method are substantially the same as those in the first embodiment, the same or corresponding portions are denoted by the same reference characters and description thereof will be omitted.

In each of the above-described embodiments, the sealing material 8 filled between the both side plates 14 and 14 is prevented from flowing out into the opening 16 between the two side plates 14 and 14 in the joint base material 6. It is assumed that the lid 12 is inserted, but the present invention is not limited to this. A release sheet that covers the mouth 16 can be used.
As shown in FIG. 7, the core 10a is
In the shape of a plate having a thickness substantially equal to the width between both side plates 14, 14, the insertion of the core material 10 between the side plates 14, 14 and the flow of the sealing material 8 are facilitated at the front end. And the bottom plate 1 of the joint base material 6
It can be formed to have a length not reaching 8.

The joint material of the present invention is not limited to the joint applied between the outer wall material and the joint groove between the outer wall materials as in each of the above-described embodiments. In addition, the present invention can be applied to joint grooves in various places.

[0034]

As described above, according to the present invention, the joint material is installed by a simple operation of fitting the joint material into the joint groove and press-fitting the core material between both side walls of the joint material. In addition, the joint material can be mounted in the joint groove opening while maintaining a proper posture regardless of the depth and width of the joint groove. In addition, since the area for storing extra sealing material is secured in response to variations in the width of the joint groove, the sealing material does not protrude outside the joint material due to press-fitting of the core material. Therefore, an effective sealing effect between the joint groove and the inner wall can be obtained by effectively using the sealing material.

Further, the joint material constructed by the joint material constructing method of the present invention is not fixed to the bottom surface of the joint groove of the bottom plate of the joint base material, but the relative strength of the adjacent outer wall material due to vibrations such as earthquakes. Since it can have a degree of freedom for displacement,
Even if adjacent outer wall materials are shifted from each other, they can be prevented from peeling from inside the joint groove mouth or breaking inside the joint groove mouth.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a state after construction of a joint material according to a first embodiment of the present invention.

FIG. 2 is a cross-sectional view showing a state where a sealing material is filled in the joint material.

FIG. 3 is a side view of the same.

FIG. 4 is a perspective view of the stopper.

FIG. 5 is a cross-sectional view showing a state after construction of a joint material according to a second embodiment of the present invention.

FIG. 6 is a cross-sectional view showing a state where a sealing material is filled in the joint base material.

FIG. 7 is a sectional view showing another configuration example of the core material in the joint material of the present invention.

[Explanation of symbols]

 2 Joint material 4 Stopper 6 Joint material 8 Sealing material 10 Core material 12 Lid 14 Side plate 16 Portion 18 Bottom plate 20a, 20b Seal tongue piece 22 Hole 40 Locking flange W Inner side wall

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) E04B 1/682

Claims (4)

(57) [Claims] 1. A joint base material having a substantially U-shaped cross section formed by left and right side plates and a bottom plate made of a synthetic resin, and a sealing material having fluidity and viscosity filled between both side plates of the joint base material. A core material press-fitted between both side plates of the joint base material, wherein the joint base material projects at least two soft sealing tongue pieces on the outer surfaces of the left and right side plates, respectively. Using a joint material formed by piercing a large number of holes between the seal tongue pieces, with the press-fitting of the core material between the left and right side plates of the joint base material fitted in the joint groove,
A method for sealing a joint groove by pressing out a sealing material from a number of holes formed in the side plate, wherein a stopper for setting a fitting depth of the joint base material is inserted and held in the joint groove; A step of inserting the joint base material into the joint groove to hold the joint base material in the joint groove opening portion at a position where the bottom plate of the joint base material contacts the stopper; left and right side plates of the joint base material inserted into the joint groove In the meantime, the core material is press-fitted to the extent that the tip does not reach the bottom plate of the joint base material, and the sealing material filled between both side plates with the press-fitting of the core material is formed on the side plate by a large number. and expulsion from the hole, the
The extruded sealing material is placed inside a pair of sealing tongues and joint grooves.
Fill the space enclosed by the side walls and the remaining sealing material
Push the seal tongue on the mouth side of the joint groove to spread the core head
And flowing the joint to the space between the sealing tongue and covering the joint groove with the head of the core. 2. The joint material applying method according to claim 1, wherein when the joint base material is inserted into the joint groove, the sealing tongue piece protruding from the outer side surface of the side plate of the joint base material is placed inside the joint groove. A method for constructing a joint material, wherein the joint material is held in a joint groove opening by friction with a wall. 3. The joint method according to claim 1, wherein, when the joint base material is inserted into the joint groove, the joint flanges that engage with the rim of the joint groove are provided on both sides of the side plate. A method for applying a joint material, comprising using a base material. 4. The joint material applying method according to claim 1, wherein the joint material is inserted into an opening between both side plates of the joint base material to suppress the outflow of the sealing material, and at the same time, the joint groove is provided. A step of press-fitting a core material between the side plates of the joint base material using a joint base material formed by inserting a cover body for suppressing deformation of the joint base material when the joint base material is inserted into the joint body; And press-fitting the core material within a range where the tip of the lid does not reach the bottom plate of the joint base material.