JP7222573B1 - Seat fixing device and seat fixing method - Google Patents

Abstract

A fixed disk backside adhesive strength improvement to a substrate frontside is provided.
A fixed disk (1) for fixing a part of a waterproof sheet (C) laid along the front side of a base (B), a covering sheet (2) provided along the surface of the fixed disk (1), the back side of the fixed disk (1) and the base (B). and a heater H that heats the mesh sheet 3 from the front side of the cover sheet 2 through the fixed disk 1. The mesh sheet 3 is It has a metal mesh 3a woven in a sheet shape, both front and back surfaces of the metal mesh 3a, and a bonding coating 3b formed on the mesh. It becomes the adhesive surface for the front side of B.
[Selection drawing] Fig. 1

Description

INDUSTRIAL APPLICABILITY The present invention is used to fix a part of a waterproof sheet with a fixing disk to a substrate to be waterproofed in a waterproofing construction method for waterproofing a roof of a building, a veranda, a balcony, and other structures. The present invention relates to a sheet fixing device, a jig device used in the sheet fixing device, and a sheet fixing method for fixing a part of a waterproof sheet to a base using a mechanical fixing method using a fixing disk.

Conventionally, as a retrofitting method of the mechanical fixing method, a fixing member in which the anchor member penetrates the waterproof sheet and is fixed to the ground, and a waterproof sheet and a cushioning material are arranged between the disk of the fixing member and the waterproof sheet. There is a seat fixing device provided with a cushioning material that absorbs the force received from the waterproof sheet by interlocking with friction, and a waterproof member (patch) that covers the disc and is fixed to the waterproof sheet (for example, Patent Document 1 reference).
After the waterproof sheet is placed on the substrate, the disk is placed through a cushioning material made of elastically deformable rubber or spring. Then, a patch is arranged so as to cover the disk, and the lower surface of the patch is fixed to the waterproof sheet and the upper surface of the disk by heat-sealing or welding with a solvent. When the waterproof sheet is pulled up by the negative pressure of a strong wind, the cushioning material placed along the bottom edge of the disk elastically deforms and the waterproof sheet does not come into direct contact with the disk. prevent.
In addition, as a pre-attachment method of the mechanical fixing method, a fixing member that joins and fixes the waterproof sheet to the joint, an anchor member that supports the base on the central side of the joint, and an outer surface of the fixing member. There is a seat fixing unit provided with a regulating mechanism that regulates bending deformation so that the central portion is more difficult to bend than the end portions (see, for example, Patent Document 2).
A fixing member of the seat fixing unit is placed on the base, and an anchor member through which the plate spring of the regulating mechanism is inserted and supported is screwed into the base, and the fixing member is supported on the base via the anchor member. A hot-melt adhesive is applied to the flat surface of the fixing member to form a joint. Next, a waterproof sheet is laid along the fixing member, and an induction heating device is applied to the flat surface of the fixing member through the waterproof sheet, and the lower surface and joints (hot-melt adhesive) of the waterproof sheet are melted and fixed. It is heat-sealed and fixed to the flat surface of the member. When a phenomenon (fluttering) occurs in which parts of the waterproof sheet that are not fixed by the fixing members rise due to the negative pressure of strong winds and undulate, each part (outer end) of the fixing members that can bend and deform will bend and deform. As a result, the force acting on the joint from the waterproof sheet is reduced, and the separation of the waterproof sheet from the joint and the breakage of the waterproof sheet near the outer end of the joint are prevented.

JP 2014-034825 A JP 2019-031782 A

By the way, the phenomenon (fluttering), in which portions of the waterproof sheet that are not fixed rise due to the negative pressure of strong winds and undulate, also occurs when an unexpected maximum wind speed, such as a violent typhoon, blows.
However, in Patent Documents 1 and 2, the adhesive strength of the disc and the fixing member (fixing disc) to the substrate is insufficient, so when a strong wind such as a typhoon blows, the fixing disc floats up from the substrate together with the waterproof sheet. There is a problem that the waterproof sheet is broken due to
To explain in detail, in the post-installation method of Patent Document 1, when a strong wind blows that is stronger than the limit of elastic (collapse) deformation of the cushioning material due to the negative pressure of the strong wind, the corners of the outer peripheral portion of the fixed disk are compressed. Since the waterproof sheet comes into contact with the cushioning material that has been crushed and deformed to the maximum, the waterproof sheet will be damaged.
In the pre-attaching method described in Patent Document 2, when a strong wind blows stronger than the limit of bending deformation of the fixed disk due to the negative pressure of strong wind, the waterproof sheet may peel off from the joint and the outer end of the joint may be damaged. The waterproof sheet is torn in the vicinity.
In addition, as the area of the substrate to be waterproofed increases, the number of locations where the sheet is fixed by the fixed disc increases. Even so, in the case of the retrofit method, the exposed fixed disc is covered with a patch (protective sheet) and heated by a heater to heat and bond. The operator could easily distinguish between the unfixed portion and the unfixed portion. However, in the case of the pre-applied method, since all of the many fixed discs are covered with the waterproof sheet, there are two types of fixing discs. It was difficult for the operator to easily distinguish between them, and unheated and unfixed portions sometimes remained.
Under such circumstances, there is a demand for an apparatus that allows an operator to easily find unheated and unfixed portions that have not been heated and joined by a heater, and to deal with them.

In order to solve such problems, the sheet fixing device according to the present invention comprises a fixing disk for fixing a part of the waterproof sheet laid along the front side of the base, and a coating provided along the surface of the fixing disk. A sheet, a mesh sheet provided so as to face and be laminated between the back side of the fixed disk and the front side of the base, and heating from the front side surface of the covering sheet toward the mesh sheet through the fixed disk. and a heater, wherein the mesh sheet has a metal mesh woven into a sheet shape and bonding coatings formed on both front and back surfaces of the metal mesh and on the mesh, wherein the bonding coating is formed on the metal mesh. A thermoplastic resin is dip-molded into both the front and back surfaces and the mesh, and is melted by heating by the heater to form an adhesive surface for the back side of the fixed disk and the front side of the base .
Further , in order to solve such problems, the sheet fixing method according to the present invention includes: a sandwiching step of disposing mesh sheets so as to face and be laminated between the back side of the fixing disk and the front side of the base; A disk fixing step of fixing a part of the waterproof sheet to the front side of the base with the fixing disk, a superimposition step of arranging the covering sheet along the surface of the fixing disk, and a heater from the front side of the covering sheet. and a heating step of heating the mesh sheet through the fixed disk, wherein the mesh sheet comprises a metal mesh woven into a sheet and bonding coatings formed on both front and back surfaces of the metal mesh and on the mesh. , wherein the bonding coating is a thermoplastic resin that is dip-molded on both the front and back surfaces of the metal mesh and on the mesh, and in the heating step, the bonding coating is melted by heating the heater to melt the fixed disk. and the front side of the base.

BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which shows the whole structure of the sheet|seat fixing device which concerns on embodiment (1st embodiment) of this invention, Fig.1 (a) is a partial longitudinal front view, and also shows a partial enlargement of the principal part, FIG. 1(b) is a partially cutaway plan view. BRIEF DESCRIPTION OF THE DRAWINGS It is explanatory drawing which shows the whole structure of the jig|tool apparatus which concerns on embodiment (1st embodiment) of this invention, and the sheet|seat fixing method, Fig.2 (a) is a partial longitudinal front view of a heating process, FIG.2(b) ) is a partial longitudinal front view of the pressing process. 1 is a partial longitudinal front view showing the overall configuration of a sheet fixing device, a jig device, and a sheet fixing method according to an embodiment (second embodiment) of the present invention; FIG. 1 is a partial longitudinal front view showing the overall configuration of a sheet fixing device, a jig device, and a sheet fixing method according to an embodiment (third embodiment) of the present invention; FIG. FIG. 11 is a partial longitudinal front view showing the overall configuration of a sheet fixing device, a jig device, and a sheet fixing method according to an embodiment (fourth embodiment) of the present invention; FIG. 6 is an explanatory view showing the overall configuration of a sheet fixing device, a jig device, and a sheet fixing method according to an embodiment (fifth embodiment) of the present invention, FIG. is partially enlarged, and FIG. 6(b) is a partially cutaway plan view. FIG. 11 is a partial vertical cross-sectional front view showing the overall configuration of a sheet fixing device, a jig device, and a sheet fixing method according to an embodiment (sixth embodiment) of the present invention; FIG. 11 is a partial longitudinal front view showing the overall configuration of a sheet fixing device, a jig device, and a sheet fixing method according to an embodiment (seventh embodiment) of the present invention;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail based on the drawings.
A sheet fixing device A according to an embodiment of the present invention, as shown in FIGS. It is a fixing structure in which a part of the waterproof sheet C is attached by a fixing disk 1 to the substrate B which is a surface.
Materials for the base B include metal, concrete including lightweight foamed concrete, and wood.
The waterproof sheet C is made of vinyl chloride resin or other synthetic resins in terms of durability, heat adhesion, and solvent welding and bonding, and a vinyl chloride resin sheet having a thickness of 1.0 to 2.0 mm can be used. preferable. The structure of the waterproof sheet C may be a single layer body, but from the viewpoint of dimensional stability and strength, a composite sheet or a reinforced composite sheet in which a fiber layer such as a woven or nonwoven fabric of glass fiber or polyester fiber is laminated between a plurality of sheet layers. Sheets are preferably used.
Such a waterproofing construction method using a fixed disk 1 for attaching the waterproof sheet C to the base B is called a mechanical construction method (insulation waterproofing construction method), and generally, a heat insulating material D is laid along the base surface of the base B. It is often done. The heat insulating material D is made of styrene resin, isocyanurate resin, hard urethane resin, phenol resin, or the like.
In this case, a sheet fixing device A for fixing a part of the waterproof sheet C with the fixing disk 1 to the heat insulating material D laid along the front side of the base B is provided.

This type of mechanical fixing method includes a post-fixing method (post-fixing method) in which the fixed disk 1 is fixed after laying the waterproof sheet C as shown in FIGS. There is a pre-attachment method (pre-attachment fixing method) in which the fixed disk 1 is fixed before laying the waterproof sheet C as shown in (a), (b) to FIG.
In both the post-attachment method and the pre-attachment method, the waterproof sheet C covering the base B is fixed in points by a plurality of fixed discs 1 arranged at predetermined intervals. not fixed for
For this reason, if the non-fixed part of the waterproof sheet C is lifted by the wind pressure associated with a typhoon or other strong winds or storm winds (fluttering, fluttering phenomenon), a load is applied to the fixed part, causing damage or breakage. cause.
In order to solve such problems, the sheet fixing device A according to the embodiment of the present invention includes a fixing disk 1 provided for fixing a part of the waterproof sheet C laid along the front side of the base B. , a waterproof covering sheet 2 provided along the surface 1a of the fixed disk 1, and a mesh sheet 3 provided so as to be laminated so as to face each other between the back side of the fixed disk 1 and the front side of the base B. Equipped as a main component.
In addition, it is preferable to have a reinforcing layer 4 provided along the back surface 1b of the fixed disk 1. As shown in FIG.
Further, a heater H is provided for heating the fixed disk 1, the mesh sheet 3, and the like from the front surface 2b of the covering sheet 2. As shown in FIG. When using the heater H, it is preferable to use the jig device J.

The fixed disk 1 is made of a conductive material (conductor) including metals such as aluminum, stainless steel, and steel, or a hard material similar thereto, and is formed into a flat circular or polygonal plate shape. In particular, the fixed disk 1 is preferably made of an aluminum plate, a stainless steel plate, or the like, which has a flat front surface 1a and a rear surface 1b, an outer peripheral surface 1c, and excellent corrosion resistance and strength. As the material of the fixed disk 1, it is also possible to use a magnetic material such as martensitic stainless steel or ferritic stainless steel.
1(a)(b)-FIG. 4 and FIGS. 6(a)(b)-FIG. 8, and a comparative plate type shown in FIG. There is a bowl-shaped curved plate type that is relatively thin. The thickness of the fixed disk 1 is preferably set to approximately 1.0 to 1.6 mm, more specifically 1.1 to 1.5 mm. The size (diameter) of the fixed disk 1 is preferably set to approximately 55 to 65 mm, more specifically 60 to 65 mm.
At the center of the fixed disk 1, a fixing hole 1d is formed through which a fixture 1s consisting of fastening members such as screws and bolts and fixing members such as anchors and nails is inserted. As for the shape of the fixing hole 1d, it is preferable to form a counterbore 1e that fits with the head of the fixture 1s and protrudes in the thickness direction from the back surface 1b of the fixed disk 1 by bending. As a result, the strength of the fixed disk 1 can be increased.

1 to 8 as a specific example of the fixed disk 1, a predetermined portion of the heat insulating material D laid along the base B, or a predetermined portion of the waterproof sheet C laid along the heat insulating material D. On the other hand, the fixed disk 1 is arranged through a mesh sheet 3, which will be described later, and is attached immovably to the substrate B, the heat insulating material D, and the like by means of the fixtures 1s inserted through the fixing holes 1d of the fixed disk 1. be done. In this attached state, the counterbore 1e protruding from the back surface 1b of the fixed disk 1 is directly inserted into the mesh sheet 3 or the heat insulating material D described later, or penetrates the mesh sheet 3 or the waterproof sheet C to insulate the heat. It is inserted into material D. As a result, the fixed disk 1 is fixed to the heat insulating material D and the waterproof sheet C so as not to be displaced.
Further, in the illustrated example, the stationary disk 1 has a penetrating or concave recess 1f on the surface 1a. More specifically, between the fixed hole 1d of the fixed disk 1 and the outer peripheral surface 1c, a plurality of penetrating or recessed recesses 1f are formed. The plurality of depressions 1f are arranged at predetermined intervals in the circumferential direction, such as 4, 6, or 8, so as to form a symmetrical shape. Circular through holes, which are excellent in workability, are preferable as the plurality of recessed portions 1f. It is preferable to set the diameter of the plurality of recessed portions 1f to approximately 3 to 5 mm.

The covering sheet 2 is made of the same material as the waterproof sheet C and is formed separately or integrally with the waterproof sheet C. The covering sheet 2 is arranged so as to cover the surface 1a of the fixed disk 1, and the rear surface 2a of the cover sheet 2 is arranged to cover the surface 1a of the fixed disk 1. are joined and fixed in a hermetic manner facing each other in the thickness direction. The front surface 2b of the cover sheet 2 overlaid along the surface 1a of the fixed disk 1 is arranged so as to face the heater H, which will be described later, in the thickness direction. Therefore, the overlapping portion 2c covering the fixed disk 1 in the cover sheet 2 protrudes most in the thickness direction than the annular portion 2d outside the overlapping portion 2c and the peripheral portion 2e outside the annular portion 2d. , and the front surface 2b thereof has a stepped shape as a whole.
Further, when the fixed disk 1 has a penetrating or concave recess 1f on the surface 1a as in the illustrated example, the cover sheet 2 has a recess 2f that enters the recess 1f when heated by a heater H, which will be described later. More specifically, the portions of the cover sheet 2 covering the plurality of depressions 1f form recesses 2f that enter the plurality of depressions 1f of the fixed disk 1 when heated by the heater H. As shown in FIG.
Further, the detailed configuration of the covering sheet 2 differs between the post-attachment method and the pre-attachment method.
The covering sheet 2 used in the retrofitting method shown in FIGS. 1(a)(b) to 5 is a protective sheet 2' formed in a circular shape larger than the fixed disk 1 separately from the waterproof sheet C, It is arranged so as to cover the surface 1a of the fixed disk 1 and a part of the waterproof surface Ca of the waterproof sheet C arranged around it, and the back surface 2a thereof is joined and fixed as a whole.
The outer peripheral end face 2' of the protective sheet 2', which serves as the cover sheet 2, extends over the waterproof surface Ca of the waterproof sheet C and is sealed with a sealer 2s.
6(a), 6(b) to 8, the cover sheet 2 used in the pre-applied construction method is formed as a part of the waterproof sheet C laid so as to cover the base B, and A back surface 2a facing the front surface 1a is partially joined and fixed.

Furthermore, it is preferable to form an adhesive layer g made of an adhesive material that can be melted by heating with a heater H, which will be described later, at least between the surface 1a of the fixed disk 1 and the back surface 2a of the cover sheet 2. As shown in FIG.
As the adhesive material for the adhesive layer g, it is preferable to use a thermoplastic adhesive such as a hot-melt adhesive. As a specific example, it is preferable to use a hot-melt adhesive having a melting point or R&B softening point of 100 to 160° C., such as a polyester resin-based adhesive or a polyamide (nylon)-based adhesive. As another example, it is also possible to use a thermosetting adhesive, such as an acrylic resin adhesive that starts curing at 150° C. or higher.
The adhesive layer g can be formed by coating with a spray, brush, roller, or dip coating, laminating a film, or pressing into a disc shape after applying a liquid adhesive.
1 to 8 as a specific example of the adhesive layer g, in addition to the surface 1a of the fixed disk 1, the back surface 1b and the outer peripheral surface 1c of the fixed disk 1 and the inner surfaces of the plurality of recesses 1f are also heated. An adhesive layer g made of a melt adhesive or the like is laminated.

The mesh sheet 3 is arranged so as to be sandwiched between the back side of the fixed disk 1 and the front side of the base B, and is preferably formed to be larger than the fixed disk 1. - 特許庁When the stationary disk 1 is formed in a circular plate shape, the mesh sheet 3 becomes a circular thin plate having a diameter larger than that of the stationary disk 1 .
The mesh sheet 3 has a sheet-like woven metal mesh 3a and bonding coatings 3b formed on both front and back surfaces of the metal mesh 3a and on the mesh.
The metal mesh 3a is made of a wire made of a conductive material (conductor) containing metal such as aluminum, stainless steel, steel, or a hard material similar thereto, and the vertical lines and horizontal lines intersect one by one while maintaining a constant interval. A weaving method such as plain weaving or twill weaving in which two or more vertical lines and two or more horizontal lines are crossed over each other while maintaining a certain interval, and the metal mesh 3a is made bendable and deformable at least in the thickness direction.
It is preferable to set the thickness of the wire material to be the metal mesh 3a to approximately 0.1 mm to 0.3 mm, more specifically approximately 0.15 mm to 0.2 mm.
The bonding film 3b is formed by dipping a thermoplastic resin such as vinyl chloride resin (PVC) so as to cover both the front and back surfaces of the metal mesh 3a and the mesh, and is slightly thicker than the metal mesh 3a. More specifically, by dip-molding a coating material such as PVC (dip coating: dip coating molding or dip coating) using both the front and back surfaces of the metal mesh 3a and the mesh as a storage space for the thermoplastic resin, general A large amount of coating material is integrally held with a uniform thickness compared to coating or the like. The meshes of the metal mesh 3a preferably have an interval of about 1 mm to 3 mm, more preferably about 1 mm to 2 mm, so that the coating material does not drip during dip molding. In order to prevent the bonding film 3b from peeling off from the metal mesh 3a, it is preferable to dip-mold a coating material such as PVC after the metal mesh 3a is subjected to a primer treatment with a heat-fixable adhesive. As a result, the coating material of the bonding coating 3b is melted by heating by a heater H, which will be described later, to form bonding surfaces 3c for the back side of the fixed disk 1 and the front side of the substrate B. FIG.
Further, if necessary, a heating layer 3d made of a conductive material (conductor) such as aluminum or stainless steel is provided on the back side of the mesh sheet 3, and an adhesive such as a hot-melt adhesive is applied to the surface of the core material such as glass fiber. It is also possible to laminate the coated reinforcing sheet 3e and integrate the mesh sheet 3, the heating layer 3d and the reinforcing sheet 3e by pasting with an adhesive or liquid welding.

The reinforcing layer 4 may be a single layer made of the same material as the waterproof sheet C, or a laminated body made of a woven fabric having a higher strength and durability than the waterproof sheet C, or the like. be. In particular, it is preferable that the reinforcing layer 4 is integrally provided with or laminated with a layer made of a conductive material such as an aluminum foil to generate heat by electromagnetic induction.
The material of the reinforcing layer 4 can be changed so as to provide a reinforcing structure with improved strength and durability by combining a different reinforcing body with the fabric or conductive material described above.
Therefore, the reinforcing layer 4 is arranged along the back surface 1b of the fixed disk 1 and has a protruding portion 4a protruding from the outer peripheral surface 1c of the fixed disk 1 in the radial direction.
A bonding portion (not shown) made of an adhesive such as a hot melt adhesive is formed on the surface of the reinforcing layer 4 facing the waterproof sheet C and the covering sheet 2, and is melted and bonded by heating with a heater H described later. is preferred.

The heater H is a heat source that heats the front side of the covering sheet 2 to melt the bonding film 3b of the mesh sheet 3 and the like.
Examples of the heater H include an induction heating device Hi that heats a metal or the like using the principle of electromagnetic induction, a hot air heater, a hot wire heater, and the like. In particular, it is preferable to use an induction heating device Hi in which a smooth heating surface (irradiation portion) Ha is formed protruding from the tip portion thereof, and the heating surface Ha is brought into pressure contact with the front surface 2b of the cover sheet 2 .
The heating surface Ha is made of a hard material with excellent heat resistance such as metal, or a material with excellent heat resistance and can be elastically deformed such as silicone rubber. is also formed in a large circular shape.
In the case shown in FIGS. 1 to 8 as an example of the heater H, the induction heating device Hi is assembled so as to face the front surface 2b of the overlapped portion 2c of the covering sheet 2, and the heating surface Ha of the induction heating device Hi are brought into contact with the front surface 2b of the overlapped portion 2c of the covering sheet 2. As shown in FIG. Therefore, the back side surface 2a of the overlapping portion 2c covering the stationary disk 1 in the cover sheet 2 is pressed against the surface 1a of the stationary disk 1 by the weight of the induction heating device Hi. A step portion Hb is formed on the outer peripheral surface of the induction heating device Hi so that the tip portion having the heating surface Ha is smaller than the base portion.
Further, although not shown as another example of the heater H, a space made of air or other insulating gas is provided between the heating surface Ha of the induction heating device Hi and the front surface 2b of the overlapped portion 2c of the covering sheet 2. The heating surface Ha of the induction heating device Hi is brought into contact with the front surface 2b of the overlapped portion 2c of the cover sheet 2 by forming a portion or by sandwiching a spacer made of a non-conductive material (insulator) such as glass or plastic. is also possible. At this time, the spacing of the space and the thickness of the spacer are set within a range in which the induction heating from the heating surface Ha of the induction heating device Hi reaches the front surface 2b of the overlapped portion 2c of the covering sheet 2 without fail. be. Furthermore, the stepped portion Hb may not be formed on the outer peripheral surface of the induction heating device Hi.

The jig device J is used for heating (induction heating) the covering sheet 2 provided along the surface 1a of the fixed disk 1 with a heater H (induction heating device Hi). b) will be described in detail.
The jig device J includes a set jig J1 installed in the annular portion 2d and the peripheral portion 2e outside the overlapping portion 2c covering the fixed disk 1 in the cover sheet 2, and a heater H for the set jig J1. and a pressing jig J2 installed as a main component.
The setting jig J1 is made of a non-conductive material (insulator) such as rubber material such as hard rubber, plastic, plate-like paper material, wood or glass. It is formed in a cylindrical or prismatic shape having a through hole Ja into which Ha is inserted. One end surface of the setting jig J1 facing the annular portion 2d and the peripheral portion 2e of the covering sheet 2 is formed with an uneven surface Jb that fits with the stepped shape of the annular portion 2d and the peripheral portion 2e. It is preferable to form a locking portion Jc that engages with a stepped portion Hb formed on the outer peripheral surface of the induction heating device Hi on the other end surface of the setting jig J1.
The holding jig J2 is a substitute for the heater H assembled to the set jig J1, and is made of metal or the like having a large specific gravity, and is formed in the same shape and size as the tip of the heater H having the heating surface Ha. has a pressing surface Jp that comes into pressure contact with the portion 2h of the covering sheet 2 heated by the heater H in the state assembled to the setting jig J1.
The base end surface of the pressing jig J2 preferably has a smooth mounting surface Jq on which the weight J3 is mounted. The outer peripheral surface of the pressing jig J2 preferably forms a locking stepped portion Jr corresponding to the stepped portion Hb of the induction heating device Hi.
On the other hand, in the pre-attaching method, since the fixed disk 1 is covered with the waterproof sheet C, it is easy for the operator to lose sight of the position where the fixed disk 1 is arranged, and it may be difficult to install the set jig J1. Therefore, in such a case, the fixed disk 1 made of a magnetic material and a magnet (magnet: not shown) are used. On the other hand, it is preferable to attract a magnet. As a result, the magnet serves as a mark, making it easy to find the position where the fixed disk 1 is arranged, and the operation of setting the set jig J1 with respect to the fixed disk 1 is also facilitated.

A sheet fixing method using the sheet fixing device A according to the embodiment of the present invention is, as shown in FIGS. and the front side of the substrate B, a sandwiching step of arranging the mesh sheets 3 so as to be laminated so as to face each other, a disk fixing step of fixing a part of the waterproof sheet C with the fixed disk 1, and a surface of the fixed disk 1 1a, and a heating step of heating from the front surface 2b of the covering sheet 2 toward the mesh sheet 3 via the fixed disk 1 with the heater H. there is
Further, it is preferable to include a pressing step of pressing the front surface 2b of the covering sheet 2 heated by the heater H toward the surface 1a of the fixed disk 1. FIG.
In the heating step, as shown in FIG. 2(a), the bonding film 3b of the mesh sheet 3 is melted by the heating of the heater H to form the bonding surface 3c for the back side of the fixed disk 1 and the front side of the substrate B. As shown in FIG.
In the pressing step, as shown in FIG. 2(b), by using a pressing jig J2 or a weight J3 instead of the heater H, the portion 2h of the cover sheet 2 heated by the heater H is placed on the surface of the stationary disk 1. Pressurized against 1a.

Next, the sheet fixing device A according to the embodiment of the present invention will be described for the first to fourth embodiments in which the sheet fixing device A is used in the post-attaching method, and the fifth to seventh embodiments in which the sheet fixing device A is used in the pre-attaching method. do.
The sheet fixing device A1 of the first embodiment shown in FIGS. 1(a)(b) to 2(a)(b) comprises a back surface 1b of a fixed disk 1 (first fixed disk 11), a waterproof sheet C ( A mesh sheet 3 (first mesh sheet 31) having a diameter larger than that of the fixed disk 1 is arranged between the first waterproof sheet C1), and the fixed disk is immovably attached to the substrate B and the heat insulating material D. A protective sheet 2' (first protective sheet 21) serving as a covering sheet 2 is covered from the surface 1a of the waterproof sheet C to a part of the waterproof surface Ca of the waterproof sheet C. In the illustrated example, a thick plate type is used as the fixed disk 1 .
Heating (induction heating) by a heater H (induction heating device Hi) melts the bonding coating 3b of the mesh sheet 3, thereby bonding and fixing the back surface 1b of the fixed disk 1 and the waterproof surface Ca of the waterproof sheet C, and at the same time, the coating The back surface 2a of the annular portion 2d of the sheet 2 (protective sheet 2') and the outer peripheral portion 3' of the mesh sheet 3 are welded together, and the back surface 2a of the peripheral portion 2e of the cover sheet 2 (protective sheet 2') is a waterproof sheet. It is welded and joined to the waterproof surface Ca of C with a solvent.

In addition to this, at least when the adhesive layer g is formed between the surface 1a of the stationary disk 1 and the back surface 2a of the covering sheet 2 (protective sheet 2'), heating by the heater H (induction heating device Hi) The adhesive layer g is melted by (induction heating). For this reason, the rear side surface 2a of the overlapped portion 2c of the cover sheet 2 (protective sheet 2') and the surface 1a of the fixed disk 1 are joined and fixed by the adhesive layer g.
Furthermore, in the case where the fixed disk 1 has a penetrating or concave recess 1f on the surface 1a as in the illustrated example, heating (induction heating) by a heater H (induction heating device Hi) may cause the cover sheet 2 (protective sheet 2') is thermally deformed and enters into a plurality of recessed portions 1f, thereby covering the overlapping region 2c of the cover sheet 2 (protective sheet 2') except for the recessed portions 1f. It becomes the recessed part 2f depressed rather than the site|part. For this reason, the back side of the concave portion 2f is bonded and fixed to the inner surface of the concave portion 1f by the melted adhesive layer g.
Furthermore, as in the illustrated example, when the adhesive layer g is laminated on the back surface 1b and the outer peripheral surface 1c of the fixed disk 1 and the inner surfaces of the plurality of recessed portions 1f, the adhesive layer g is formed by induction heating from the heating surface Ha. is melted, and the back surface 2a of the annular portion 2d outside the overlapped portion 2c of the cover sheet 2 (protective sheet 2') and the outer peripheral surface 1c of the fixed disk 1 are joined and fixed by the adhesive layer g.

As shown in FIGS. 1(a) and 1(b), the fixed disc 1 is placed on the waterproof sheet C with the mesh sheet 3 interposed therebetween, and punched out by fixing tools 1s such as screws and bolts. After processing, the fixed disk 1 is immovably attached to the base B, the heat insulating material D and the waterproof sheet C by the fixture 1s. As a result, the metal mesh 3a of the mesh sheet 3 will not fray and the strength can be prevented from being lowered regardless of whether or not the fixed disk 1 has the counterbore 1e. Also, if the back surface of the mesh sheet 3 is laminated on the waterproof surface Ca of the waterproof sheet C and integrated with an adhesive or by liquid welding, positional displacement with respect to the waterproof sheet C can also be prevented. In particular, when the fixed disk 1 has a counterbore 1e, a recess having a shape similar to the counterbore 1e is formed so as to protrude toward the screw hole of the waterproof sheet C and press against the fixture 1s, thereby preventing the fixture 1s from coming off. be done.
Subsequently, after covering the fixed disk 1 with the covering sheet 2 (protective sheet 2'), as shown in FIG. The heating surface Ha of the heater H (induction heating device Hi) is inserted into the through hole Ja of the set jig J1 and assembled, and the protective sheet 2' is overlapped by heating (induction heating) from the heating surface Ha. The bonding film 3b of the mesh sheet 3 is melted through the portion 2c and the fixed disk 1, and the back surface 1b of the fixed disk 1 and the waterproof surface Ca of the waterproof sheet C sandwich the front and back surfaces of the metal mesh 3a and the adhesive surface 3c of the mesh. It is glued and fixed.
As a result, it is possible to improve the bonding strength of the back side of the fixed disk 1 to the waterproof sheet C on the front side of the substrate B, and to improve the breaking strength of the waterproof sheet C.

After that, as shown in FIG. 2(b), the heater H is removed from the through hole Ja of the set jig J1, the holding jig J2 is inserted and assembled in place of the heater H, and the holding jig J2 is placed. By placing the weight J3 on the surface Jq, the pressing surface Jp of the pressing jig J2 can be strongly pressed against the portion 2h of the covering sheet 2 heated by the heater H by the weight of the pressing jig J2 and the weight J3. can.
The holding jig J2 and the weight J3 are kept assembled until the heating portion 2h of the covering sheet 2 (protective sheet 2') by the heater H cools down, and when the heating operation of the heater H for all the fixed disks 1 is completed. The worker collects at an appropriate timing such as.

The sheet fixing device A2 of the second embodiment shown in FIG. 3 has a reinforcing layer 4 (second The reinforcing layer 42) is disposed, and the structure in which the protective sheet 2' (second protective sheet 22) serving as the covering sheet 2 and the projecting portion 4a of the reinforcing layer 4 are joined is different from the above-described first embodiment. is the same as that of the first embodiment.
The protruding portion 4a of the reinforcing layer 4 is arranged so as to face the annular portion 2d of the cover sheet 2 (protective sheet 2'), and is heated (induction heating) by the heater H (induction heating device Hi). The surface side of the projecting portion 4a and the back side surface 2a of the annular portion 2d of the cover sheet 2 (protection sheet 2') are joined and fixed in a stepped manner.
In the examples shown in FIGS. 2 and 7, a waterproof sheet C containing a plasticizer such as a vinyl chloride resin sheet and a heat insulating material D made of styrene are used. E is laminated.
The insulating layer E is made of a foamed sheet such as polyethylene or a similar sheet material, and prevents the styrene heat insulating material D from being eroded by the plasticizer contained in the waterproof sheet C.

A sheet fixing device A3 of the third embodiment shown in FIG. The projecting portion 4a of the (third reinforcing layer 43) and the outer peripheral portion 3о of the mesh sheet 3 are positioned between the protective sheet 2′ (third protective sheet 23) serving as the covering sheet 2 and the waterproof sheet C (third waterproof sheet C3). Unlike the first embodiment and the second embodiment described above, the construction other than that is the same as that of the first embodiment and the second embodiment.
The projecting portion 4a of the reinforcing layer 4 and the outer peripheral portion 3' of the mesh sheet 3 are sandwiched between the back surface 2a of the peripheral portion 2e of the cover sheet 2 (protective sheet 2') and the waterproof surface Ca of the waterproof sheet C. , and joined and fixed by heating (induction heating) by a heater H (induction heating device Hi).

The seat fixing device A4 of the fourth embodiment shown in FIG. Unlike the form and the third embodiment, other configurations are the same as those of the first, second, and third embodiments.
In the illustrated example, like the second embodiment, the reinforcement layer 4 (fourth reinforcement layer 44) arranged along the back surface 1b of the stationary disk 1, which is a thin bowl-shaped curved plate type, and a waterproof sheet A mesh sheet 3 (fourth mesh sheet 34) is sandwiched between C (fourth waterproof sheet C4).
Although not shown as another example, it is possible to replace the fixed disk 1 described in the illustrated examples of the first and third embodiments from a thick plate type to a thin bowl-shaped curved plate type. It is also possible to replace the fixed disk 1 described in the illustrated examples of the fifth to seventh embodiments, which will be described later, from a thick plate type to a thin bowl-shaped curved plate type.
Even if the fixed disk 1 is changed from a thick plate type to a thin bowl-shaped curved plate type as described above, the mesh sheet 3 can be arranged between the back side of the fixed disk 1 and the front side of the base B. Therefore, it is possible to improve the adhesion strength of the back side of the fixed disk 1 to the front side of the base B and the breaking strength of the waterproof sheet C, similarly to the thick plate type.

The sheet fixing device A5 of the fifth embodiment shown in FIGS. A fixed disk 1 in which a laminated body in which a large-diameter mesh sheet 3 (fifth mesh sheet 35), a heat-generating layer 3d and a reinforcing sheet 3e are integrated is arranged, and is attached immovably to the base B and the heat insulating material D. and the surface side of the heat insulating material D are covered with the waterproof sheet C (fifth waterproof sheet C5). Therefore, the overlapping portion 2c that covers the fixed disk 1, which is a part of the waterproof sheet C, becomes the covering sheet 2. As shown in FIG. Heating (induction heating) by a heater H (induction heating device Hi) melts the bonding coating 3b of the mesh sheet 3, thereby bonding and fixing the back surface 1b of the stationary disk 1 and the front surface of the heat insulating material D, and at the same time, the covering sheet 2 The waterproof rear surface Cb of the waterproof sheet C, which is to be the first, is welded and joined to the surface 1a of the fixed disk 1 and the outer peripheral portion 3? of the mesh sheet 3, respectively. That is, the outer peripheral portion 3? of the mesh sheet 3 is welded and joined to the back surface 2a of the annular portion 2d of the cover sheet 2 (waterproof sheet C). The back surface 2a of the peripheral portion 2e of the cover sheet 2 (waterproof sheet C) is welded and joined to the surface side of the heat insulating material D with a solvent.

Further, when the adhesive layer g is formed at least between the surface 1a of the fixed disk 1 and the back surface 2a of the cover sheet 2 (waterproof sheet C), heating (induction heating) by the heater H (induction heating device Hi) is performed. , the adhesive layer g is melted. Therefore, the back surface 2a of the overlapped portion 2c of the cover sheet 2 (waterproof sheet C) and the surface 1a of the fixed disk 1 are joined and fixed by the adhesive layer g.
Furthermore, when the stationary disk 1 has a penetrating or concave recess 1f on the surface 1a as in the illustrated example, the configuration is similar to that of the first embodiment described above.
As for the mounting procedure, the fixed disk 1 is placed on the heat insulating material D with a laminated body in which the mesh sheet 3, the heat generating layer 3d and the reinforcing sheet 3e are integrated, and is punched out by fixing tools 1s such as screws and bolts. A fixed disk 1 is immovably attached to the substrate B and the heat insulating material D by means of a fixture 1s.
Subsequently, after covering the fixed disk 1 with the covering sheet 2 (waterproof sheet C), the setting jig J1 of the jig device J is installed on the covering sheet 2 (waterproof sheet C) to A heater H (induction heating device Hi) is attached to the tool J1, and the joining film 3b of the mesh sheet 3 is melted through the overlapping portion 2c of the covering sheet 2 (waterproof sheet C) and the fixed disk 1 by heating (induction heating). , the back surface 1b of the fixed disk 1 and the surface side of the heat insulating material D are bonded and fixed with the front and back surfaces of the metal mesh 3a, the adhesive surface 3c of the mesh, the heating layer 3d and the reinforcing sheet 3e sandwiched therebetween.
After that, similarly to the first embodiment described above, the pressing jig J2 is assembled in place of the heater H, and the weight of the pressing jig J2 and the weight J3 is applied to the heating portion 2h of the covering sheet 2 by the heater H. , the pressing surface Jp of the pressing jig J2 can be strongly pressed.

The sheet fixing device A6 of the sixth embodiment shown in FIG. 7 has a reinforcing layer 4 (sixth The reinforcing layer 46) is disposed, and the structure in which the waterproof sheet C (sixth waterproof sheet C6) serving as the covering sheet 2 and the projecting portion 4a of the reinforcing layer 4 are joined is different from the above-described fifth embodiment. The configuration is the same as that of the fifth embodiment.
The projecting portion 4a of the reinforcing layer 4 is arranged so as to face the annular portion 2d of the covering sheet 2 (waterproof sheet C), and is heated (induction heating) by the heater H (induction heating device Hi) to project the reinforcing layer 4. The surface side of the portion 4a and the back surface 2a of the annular portion 2d of the covering sheet 2 (waterproof sheet C) are joined and fixed in a stepped manner.

A sheet fixing device A7 of the seventh embodiment shown in FIG. On the other hand, the structure in which the waterproof sheet C (seventh waterproof sheet C7) serving as the cover sheet 2 is joined so as to be substantially flush with the surface 1a of the fixed disk 1 is the fifth embodiment and the sixth embodiment described above. Unlike the form, other configurations are the same as those of the fifth and sixth embodiments. In other words, in the illustrated example, the reinforcing layer 4 (seventh reinforcing layer 47) is arranged between the back surface 1b of the fixed disk 1 and the mesh sheet 3 as in the sixth embodiment, but the reinforcement layer 4 (seventh reinforcing layer 47) is arranged as in the fifth embodiment. It is not necessary to arrange the reinforcing layer 4 (seventh reinforcing layer 47) between the back surface 1b of the stationary disk 1 and the mesh sheet 3.
By providing an annular spacer 4b corresponding to the thickness of the stationary disk 1 outside the stationary disk 1, the surface 1a of the stationary disk 1 and the surface of the annular spacer 4b are made substantially flush. An adhesive portion (not shown) such as a hot melt adhesive is formed on the surface of the annular spacer 4b so that it can be melted by heating (induction heating).
As a result, the cover sheet 2 (waterproof sheet C) is joined and fixed on substantially the same plane over the surface 1a of the fixed disk 1 and the surface of the annular spacer 4b by heating (induction heating) by the heater H (induction heating device Hi). be.

According to the sheet fixing device A and the sheet fixing method according to the embodiment of the present invention, the heater H heats the mesh sheet 3 from the front side surface 2b of the cover sheet 2 through the fixing disk 1, whereby the mesh sheet is The bonding film 3b of 3 is melted, and the back side of the fixed disk 1 and the front side of the substrate B are bonded and fixed with both front and back surfaces of the metal mesh 3a and the adhesive surface 3c of the mesh sandwiched therebetween.
Therefore, the adhesion strength of the back side of the fixed disk 1 to the front side of the substrate B can be improved.
As a result, when a strong wind such as a typhoon blows, the fixing disk 1 and the waterproof sheet are likely to be lifted from the base B in comparison with the conventional structure. Since it is adhesively fixed so that it cannot be displaced, it is possible to prevent breakage of the waterproof sheet C even when a violent wind such as a typhoon blows.

Furthermore, when the fixed disk 1 has a penetrating or concave recess 1f on the surface 1a as shown in the figure, and the cover sheet 2 has a recess 2f which enters the recess 1f when heated by the heater H, the heater H By heating from the front surface 2b of the cover sheet 2 toward the adhesive layer g, the adhesive layer g is melted and the surface 1a of the fixed disk 1 and the back surface 2a of the cover sheet 2 are joined and fixed.
At the same time, the portion of the covering sheet 2 that covers the recessed portion 1f of the fixed disk 1 is thermally deformed by the heating by the heater H and enters the recessed portion 1f, thereby covering the other portion of the covering sheet 2 except for the recessed portion 1f. It becomes the recessed part 2f which fell more than.
As a result, the back side of the concave portion 2f on the back side surface 2a of the cover sheet 2 is bonded and fixed to the inner surface of the concave portion 1f by the melted adhesive layer g.
Therefore, the surface 1a of the fixed disk 1 and the back side 2a of the cover sheet 2 can be joined to each other in an uneven manner, and the traces of the heat treatment by the heater H can be left on the front side 2b of the cover sheet 2. FIG.
As a result, the rear surface 2a of the cover sheet 2 is joined to the surface 1a of the stationary disk 1 without being displaced. can be prevented over a period of time.
Further, since the recessed portion 2f formed on the front surface 2b of the cover sheet 2 serves as a mark (indicator) for confirming the heating operation, only by confirming the presence or absence of the recessed portion 2f, it is possible to identify the non-bonded portion that has not been heated by the heater H. Easy to find, excellent workability and maintainability.

In particular, the bonding film 3b of the mesh sheet 3 is a thermoplastic resin that is dip-molded on both the front and back surfaces of the metal mesh 3a and the mesh, and is preferably melted by induction heating by the heater H.
In this case, by dip-molding both the front and back surfaces of the metal mesh 3a and the mesh as a storage space for the thermoplastic resin, the bonding film 3b in which a large amount of the thermoplastic resin is integrally held with a uniform thickness is obtained. By heating (induction heating) by a heater H (induction heating device Hi), the bonding film 3b is melted from the front side surface 2b of the covering sheet 2, so that the fixed disk 1 is sandwiched between the front and back surfaces of the metal mesh 3a and the bonding surface 3c of the mesh. and the front side of the base B are adhered and fixed.
Therefore, the bonding strength of the back side of the fixed disk 1 to the front side of the substrate B can be reliably improved by a simple induction heating operation.
As a result, workability is excellent and the breaking strength of the waterproof sheet C is improved.

According to the sheet fixing devices A1, A2, A3, and A4 of the first to fourth embodiments shown in FIGS. After fixing the fixed disk 1 (11, 12, 13, 14) to the waterproof surface Ca of (C1, C2, C3, C4) with the mesh sheet 3 (31, 32, 33, 34) interposed therebetween, A protective sheet 2' (21, 22, 23, 24) is bonded and fixed over the surface 1a of the disc 1, the outer peripheral portion 3' of the mesh sheet 3, and part of the waterproof surface Ca of the waterproof sheet C. As shown in FIG.
Therefore, the protective sheet 2 which becomes the covering sheet 2 is improved by the retrofitting method of fixing the fixed disk 1 after the waterproof sheet C is laid, while improving the adhesive strength between the back side of the fixed disk 1 and the waterproof surface Ca of the waterproof sheet C. ' can also be improved.
As a result, when a storm blows stronger than the elastic (collapse) deformation limit of the cushioning material due to the negative pressure of the strong wind, it is waterproof by sandwiching the cushioning material that has been crushed and deformed to the compression limit against the outer peripheral corner of the fixed disk. Compared to the conventional post-installation method in which the sheet is easily damaged by contact, the protective sheet 2' is firmly adhered and fixed to the waterproof sheet C with the outer peripheral portion 3? of the mesh sheet 3 interposed therebetween. Breakage of the waterproof sheet C can be prevented.

According to the sheet fixing devices A5, A6, and A7 of the fifth to seventh embodiments shown in FIGS. ), waterproof sheets C (C5, C6, C7) are provided as covering sheets 2 so as to cover the surface 1a of the fixed disk 1 and the front side of the base B. is laid, a part of the waterproof sheet C is joined and fixed to the front side of the substrate B with the outer peripheral portion 3? of the mesh sheet 3 interposed therebetween.
Therefore, by the pre-attaching method of fixing the fixed disk 1 before laying the waterproof sheet C, the adhesion strength between the back side of the fixed disk 1 and the front side of the base B is improved, and the waterproof sheet C to be the covering sheet 2 is joined. Strength can also be improved.
As a result, when a strong wind blows that is stronger than the limit of bending deformation of the fixed disk due to the negative pressure of the strong wind, the waterproof sheet tends to peel off from the joint or tear near the outer edge of the joint. Compared to the attachment method, the waterproof sheet C is firmly adhered and fixed to the front side of the base B with the outer peripheral portion 3? of the mesh sheet 3 interposed therebetween, so that the waterproof sheet C can be prevented from being broken even when a storm blows.

2(a) and 2(b), a setting jig J1 for the heater H (induction heating device Hi) is installed above the fixed disk 1 with the covering sheet 2 therebetween. The heating surface Ha of the heater H is attached to the tool J1, and the covering sheet 2 is heated (induction-heated) by the heater H, and the bonding film 3b of the mesh sheet 3 is melted to form the bonding surface 3c. After that, the holding jig J2 is assembled in place of the heater H removed from the set jig J1, and the pressing surface Jp of the holding jig J2 is pressed by the weight of the holding jig J2 so that the covering sheet 2 is covered by the heater H. It is pressed against the heating portion 2h. This makes it possible to keep pressing only the heating portion 2h of the covering sheet 2 against the surface 1a of the stationary disk 1 with the pressing surface Jp of the pressing jig J2.
Therefore, even if the heater H disappears immediately after heating (induction heating) by the heater H (the induction heating device Hi), the heated portion 2h of the covering sheet 2 can be concentrated and pressure-held.
As a result, the operator does not need to stay at one heating (induction heating) location, but can move to the next heating location and start the next heating operation, which significantly improves the working efficiency.
In particular, when the weight J3 is placed on the holding jig J2, the weight of the weight J3 is added to the weight of the holding jig J2. , the pressing surface Jp of the pressing jig J2 can be pressed more strongly.
Furthermore, after the heating and joining work of the covering sheet 2 and the fixed disk 1 by the heater H is completed, the setting jig J1 and the pressing jig J2 remain at the sheet fixing portion. Therefore , from the positional relationship of the remaining set jigs J1 and holding jigs J2, it is possible for the operator to estimate the unheated and unfixed portions where the heater H has not yet heated and bonded.
Therefore, the operator can easily find unheated and unfixed portions that are not heated and joined by the heater H, and can deal with them.
As a result, even if the number of sheet fixing points by the fixed disk 1 increases as the area of the substrate to be waterproofed increases, all the sheet fixing points can be reliably heated by the heater H. There is no unbonded, unheated, unfixed portion left, which improves safety, and also reduces the trouble of finding an unheated, unfixed portion, resulting in excellent workability.
In addition, in the case of the pre-applied method, a fixed disk 1 made of a magnetic material and a magnet are used. By attaching it, it becomes easy to find the place where the fixed disk 1 is arranged, and the installation work of the set jig J1 is also facilitated.

In the above-described embodiments (first to sixth embodiments) and illustrated examples, the heat insulating material D is laid between the base B and the waterproof sheet C or the fixed disk 1, but it is not limited to this. , the waterproof sheet C is laid directly along the base B without laying the heat insulating material D, and the fixed disk 1 is fixed directly to the base B without laying the heat insulating material D. may
Furthermore, although the induction heating device Hi is used as the heater H, the present invention is not limited to this, and a hot air heater, a hot wire heater, or the like may be used instead of the induction heating device Hi.
Furthermore, in the illustrated example, the fixed disk 1 is formed with a penetrating or recessed recess 1f, but the present invention is not limited to this, and the recess 1f may not be formed.

A Sheet fixing device 1 Fixed disk 1a Surface 2 Covering sheet 2' Protective sheet 2a Back side 2b Front side 2c Part covering the fixed disk (overlapping part)
2d, 2e outer part (annular part, surrounding part)
2h heating portion 3 mesh sheet 3a metal mesh 3b bonding film 3c bonding surface 3o outer peripheral portion 3o
B Backing C Waterproof sheet Ca Waterproof surface Cb Waterproof back H Heater J Jig device J1 Setting jig J2 Holding jig Jp Pressing surface

Claims (6)

a fixing disc for fixing a portion of the tarpaulin laid along the front side of the subfloor;
a cover sheet provided along the surface of the fixed disc;
a mesh sheet provided so as to face and be laminated between the back side of the fixed disk and the front side of the base;
a heater that heats the mesh sheet from the front surface of the covering sheet through the fixed disk,
The mesh sheet has a metal mesh woven into a sheet shape, and a bonding film formed on both front and back surfaces of the metal mesh and on the mesh,
The bonding film is a thermoplastic resin that is dip-molded on both the front and back sides of the metal mesh and on the mesh, and melts when heated by the heater to form a bonding surface for the back side of the fixed disk and the front side of the base. A seat fixing device characterized by: The fixed disk has a fixing hole through which a fixture is inserted toward the base, and a counterbore inserted around the fixing hole so as to penetrate the mesh sheet from the back surface of the fixed disc and protrude toward the base, 2. The seat fixing device according to claim 1, comprising : The fixed disc is fixed to the waterproof surface of the waterproof sheet laid along the front side of the base,
the mesh sheet is formed larger than the fixed disk,
The cover sheet is a protective sheet adhesively fixed so as to cover the surface of the stationary disk, the outer peripheral portion of the mesh sheet projecting from the stationary disk, and a part of the waterproof surface of the waterproof sheet. 3. The seat fixing device according to claim 1 or 2. The waterproof sheet is laid so as to cover the surface of the fixed disk fixed to the front side of the base,
the mesh sheet is formed larger than the fixed disk,
The covering sheet is formed as part of the waterproof sheet, and the waterproof back surface of the waterproof sheet is bonded and fixed to the surface of the fixed disk via the outer peripheral portion of the mesh sheet protruding from the fixed disk. 3. The seat fixing device according to claim 1 or 2. a setting jig installed at a portion of the covering sheet outside the portion covering the fixed disk;
a holding jig installed in place of the heater assembled to the set jig,
2. The sheet fixing device according to claim 1 , wherein the pressing jig has a pressing surface that presses against a portion of the covering sheet heated by the heater when assembled to the setting jig. a sandwiching step of arranging the mesh sheets so as to face and be laminated between the back side of the fixed disk and the front side of the base;
A disk fixing step of fixing a part of the waterproof sheet to the front side of the base with the fixing disk;
a superposing step of placing a covering sheet along the surface of the fixed disk;
a heating step of heating from the front surface of the covering sheet toward the mesh sheet through the fixed disk with a heater,
The mesh sheet has a metal mesh woven into a sheet shape, and a bonding film formed on both front and back surfaces of the metal mesh and on the mesh,
The bonding film is a thermoplastic resin that is dip-molded on both the front and back surfaces of the metal mesh and the mesh,
A sheet fixing method, wherein in the heating step, the bonding film is melted by heating with the heater to form a bonding surface for the back side of the fixed disk and the front side of the base.

Images