JP7086394B2 - Seat fixing unit and seat fixing method - Google Patents

Description

The present invention relates to a sheet fixing unit and a sheet fixing method for fixing a waterproof sheet provided along the waterproof base to the waterproof base.

As a sheet fixing unit of this type, for example, there is a sheet fixing device having a fixing portion (hot melt adhesive layer) capable of adhering and fixing a waterproof sheet on the upper surface of a fixing tool body made of a metal disk (for example). , Patent Document 1). In this way, the sheet fixture disposed under the waterproof sheet has a screw through hole formed in the center of the fixture body, and is fixed to the waterproof base by the screw member inserted through the screw through hole. It was a configuration to do.

To fix the tarpaulin to the sheet fixative, cover the tarpaulin installed on the waterproof base with the tarpaulin. After that, the fixture body is heated from above the waterproof sheet using an electromagnetic induction heating device. As a result, the adhesive layer (fixing portion) on the upper surface of the fixing tool body is melted, and the waterproof sheet is fixed to the sheet fixing tool.

Japanese Unexamined Patent Publication No. 2002-88886

As described in Patent Document 1, when a sheet fixture disposed under the waterproof sheet is used, for example, the waterproof sheet may be peeled off from the adhesive portion when it receives a strong wind. In addition, the waterproof sheet may peel off from the adhesive portion due to deterioration of the adhesive in the adhesive layer due to the year-round use of the sheet fixative.

Instead of the configuration described in Patent Document 1, a configuration in which a sheet fixing tool is arranged on the surface side of the waterproof sheet to fix the waterproof sheet can be considered. In the case of this configuration, for example, a screw member is provided in the center of the fixture body of the seat fixative, and the screw member is inserted from the surface side of the waterproof sheet and fixed to the waterproof base. As a result, the waterproof sheet is fixed to the waterproof base from the surface side by the sheet fixing tool, and the peeling of the waterproof sheet due to strong wind is suppressed. However, in this configuration, since the screw member of the fixing tool body for fixing the waterproof sheet penetrates the waterproof sheet, it is necessary to bond the patch-shaped sheet covering the entire fixing tool body to the waterproof sheet, which is troublesome. .. Further, if a poor bonding occurs between the sheet fixing tool and the waterproof sheet, it directly leads to water leakage, so it is necessary to maintain a good bonding state of the sheet fixing device to the waterproof sheet.

In view of the above circumstances, a sheet fixing unit and a sheet fixing method capable of stably fixing a waterproof sheet to a waterproof base are desired.

The characteristic configuration of the sheet fixing unit according to the present invention is a sheet fixing unit for fixing a waterproof sheet laid on the waterproof base to the waterproof base, and a through hole for inserting a fastener is formed. The first member fixed to the waterproof base by the fastener, the second member formed in a shape without holes and arranged above the first member, and the first member and the second member A connecting portion for connecting is provided, a first sheet fixing portion for fixing the back surface of the waterproof sheet is provided on the upper surface of the first member, and the lower surface of the second member is provided with the waterproof sheet. The point is that a second sheet fixing portion for fixing the surface is provided.

According to this configuration, the first member is arranged on the back surface side of the waterproof sheet, the second member is arranged on the front surface side of the waterproof sheet, and the first member and the second member are connected. This ensures that the tarpaulin is fixed.

According to this configuration, the first member is fixed to the waterproof base by the fastener, and the back surface side of the waterproof sheet is fixed by the first sheet fixing portion of the first member. Further, since the second member formed in a shape without holes and arranged above the first member is connected to the first member by the connecting portion, the surface of the waterproof sheet is connected by the second sheet fixing portion of the second member. The side is fixed.

That is, by connecting the second member to the first member fixed to the waterproof base, the waterproof sheet is fixed in a state of being sandwiched between the first member on the back surface side and the second member on the front surface side. As a result, the waterproof sheet can be stably fixed to the waterproof base. Further, since the second member has a shape without holes, it is possible to prevent water from entering the connecting portion between the surface side of the second member and the first member. In this way, it has become possible to provide a sheet fixing unit that is provided with a connecting portion and can stably fix the waterproof sheet to the waterproof base.

In the present invention, it is preferable that the back surface of the second member is formed in a shape that follows the shape of the surface of the first member.

According to this configuration, since the back surface of the second member is formed in a shape that follows the shape of the front surface of the first member, it is arranged between the front surface side of the first member and the back surface side of the second member. The waterproof sheet can be arranged along the first member and the second member. As a result, the first sheet fixing portion and the second sheet fixing portion are aligned with the waterproof sheet, so that the waterproof sheet can be more reliably fixed by the first member and the second member.

In the present invention, it is preferable that the connecting portion connects the first member and the second member while being passed through the through hole.

As in this configuration, when the connecting portion connecting the first member and the second member is passed through the through hole formed in the first member, the position of the connecting portion between the first member and the second member. Is stable. This facilitates the connection of the first member and the second member by the connecting portion.

In the present invention, the first locking portion provided on the back surface side of the first member and the first locking portion provided on the back surface of the second member are erected on the back surface of the second member toward the side of the first member and penetrated. A second locking portion that penetrates the hole and is locked to the first locking portion is provided, and at least one of the first locking portion and the second locking portion is provided with a screw-shaped portion. By rotating the second member in the vertical direction of the waterproof base with respect to the first member, the screw-shaped portion is screwed into the first sheet fixing portion and the second sheet fixing portion. It is preferable that the first locking portion and the second locking portion are in a locked state while approaching.

According to this configuration, the connecting portion is erected on the back surface of the first member and the first locking portion provided on the back surface side of the first member toward the side of the first member, and penetrates through the through hole. Since the second locking portion that is locked to the first locking portion is provided, the first member and the first member can be obtained by locking the second locking portion to the first locking portion. The two members can be reliably connected.

Further, by rotating the screw-shaped portion provided on at least one of the first locking portion and the second locking portion, the first seat fixing portion and the second seat fixing portion are brought closer to the first locking portion. Since the second locking portion is in the locked state, the first member and the second member are brought into close contact with the waterproof sheet disposed between the first sheet fixing portion and the second sheet fixing portion. Can be concatenated.

In the present invention, the first locking portion provided on the back surface side of the first member and the first locking portion provided on the back surface of the second member are erected on the back surface of the second member toward the side of the first member and penetrated. A plate-shaped portion is provided with a second locking portion that penetrates the hole and is locked to the first locking portion, and the first member is provided with the first sheet fixing portion and the through hole. A first plate-shaped portion and a tubular washer portion that is locked to the through hole and extends from the through hole toward the waterproof base and is fixed to the waterproof base by the fastener. The first locking portion is provided on the inner peripheral portion of the washer portion, and the second locking portion is locked to the first locking portion while being inserted into the washer portion. Is suitable.

This configuration can be suitably used in a configuration in which a plate-shaped heat insulating member is laid on a waterproof base and a waterproof sheet is laid along the upper surface of the heat insulating member. That is, the first member can be fixed to the waterproof base by the fastener in a state where the first plate-shaped portion is placed on the surface of the heat insulating member and the washer portion has entered the inside of the heat insulating member.

Then, the second member is arranged above the first plate-shaped portion of the first member, and the connecting portion is formed on the first locking portion inside the tubular washer portion of the first member and on the back surface of the second member. The first member and the second member are connected by locking each of the second locking portion that is erected toward the side of one member and penetrates through the through hole. In this way, the connecting portion can connect the first member and the second member with a simple structure by utilizing the structure of the washer portion that enters the heat insulating member.

In the present invention, a plurality of openings are formed in the inner peripheral portion of the washer portion, and a plurality of plate-shaped fitting wall portions and the plurality of fitting wall portions to be fitted to the openings are formed in the connecting portion. A locking member having a plate-shaped bottom portion connecting end portions on the side of the waterproof base is provided, and the locking member is such that the plurality of fitting wall portions are fitted into the plurality of openings. As a result, the bottom portion is configured to be positioned and held by the washer portion in a state where the bottom portion is located in the middle portion in the axial center direction of the washer portion, and the second locking portion is provided as the first locking portion on the bottom portion. A hole is formed in which the tip of the locking member is locked, and in the locking member, the fitting wall portion is flexed in the opening due to the axial force from the second locking portion acting on the first locking portion. It is preferable that the structure is elastically deformable so as to fit.

According to this configuration, the fitting wall portion of the locking member having the fitting wall portion and the bottom portion is fitted into the plurality of openings formed in the inner peripheral portion of the washer portion, and the bottom portion of the locking member is fitted. The hole formed in the above is provided as the first locking portion, and the first locking portion is locked to the second locking portion provided in the second member. Here, among the first members, the first plate-shaped portion and the washer portion are required to have high rigidity in supporting the fastener fixed to the waterproof base. On the other hand, if the locking member positioned and held by the washer portion has a function as a connecting portion that is locked to the second locking portion of the second member and connects the first member and the second member. good. Therefore, the locking member is configured to be elastically deformable so that the fitting wall portion bends in the opening when the axial force from the second locking portion acts on the first locking portion. As a result, for example, the degree to which the fitting wall portion bends in the opening of the washer portion changes depending on the thickness of the waterproof sheet arranged between the first member and the second member. The position where the first locking portion is locked to the second locking portion can be easily adjusted. Further, even when an axial force acts on the second locking portion in a state of being locked to the first locking portion, the fitting wall portion of the first locking portion bends in the opening of the washer portion. As a result, the movement of the second locking portion is allowed, so that the locked state of the second locking portion with respect to the first locking portion can be easily maintained.

The characteristic configuration of the sheet fixing method according to the present invention is a sheet fixing method for fixing a waterproof sheet laid on a waterproof base to the waterproof base, and a through hole for inserting a fastener is formed. The step of fixing the plate-shaped first member to the waterproof base by the fastener, the step of laying the waterproof sheet from above the first member, and the step of laying the waterproof sheet above the first member in the waterproof sheet. A step of placing a plate-shaped second member having no holes on the portion and connecting the second member to the first member by a connecting tool penetrating the waterproof sheet, and the upper surface of the first member and the said The point is that a step of fixing the back surface of the waterproof sheet and a step of fixing the lower surface of the second member and the front surface of the waterproof sheet are provided.

According to this configuration, the first member is fixed to the waterproof base by the fastener, and the back surface side of the waterproof sheet can be fixed by the first sheet fixing portion of the first member. Further, the second member, which is formed in a shape without holes and is arranged above the first member, is connected to the first member by the connecting tool, and the surface side of the waterproof sheet is connected by the second sheet fixing portion of the second member. Can be fixed.

That is, the second member is connected to the first member fixed to the waterproof base, and the waterproof sheet is fixed in a state of being sandwiched between the first member on the back surface side and the second member on the front surface side. As a result, the waterproof sheet can be stably fixed to the waterproof base. Further, since the second member has a shape without holes, it is possible to prevent water from entering the connecting portion between the surface side of the second member and the first member.

In the sheet fixing method according to the present invention, the step of fixing the upper surface of the first member and the back surface of the waterproof sheet and the step of fixing the lower surface of the second member and the surface of the waterproof sheet are described in the first step. It is preferable to simultaneously perform the induction heating from the upper surface side of the two members.

As in this configuration, by simultaneously fixing the first member and the second member to the waterproof sheet by induction heating from the upper surface side of the second member, it is possible to efficiently construct the waterproof sheet on the waterproof base. ..

It is a perspective view which shows the installation state of a seat fixing unit. It is an exploded perspective view of the first member of a seat fixing unit. It is a figure which shows the 2nd member of a seat fixing unit. It is sectional drawing which shows the installation process of a waterproof sheet. It is sectional drawing which shows the installation process of a waterproof sheet. It is sectional drawing which shows the installation process of a waterproof sheet. It is sectional drawing of the main part which shows the installation process of a waterproof sheet. FIG. 5 is a cross-sectional view taken along the line VIII-VIII of FIG. It is sectional drawing which shows the sheet fixing unit of another form. It is sectional drawing which shows the sheet fixing unit of another form.

Hereinafter, embodiments of the seat fixing unit according to the present invention will be described with reference to the drawings.

As shown in FIG. 1, in the roof R, a board-shaped heat insulating material 4 is laid out on a roof base (an example of a waterproof base) 2 made of, for example, a metal folded plate roof, and the heat insulating material is arranged. A waterproof sheet 3 is laid on top of the 4. The sheet fixing unit 1 fixes the waterproof sheet 3 on the roof base 2.

The roof base 2 includes a metal folded plate roof, a slab having a reinforced concrete structure, a slab formed by laying ALC plates side by side, a deck plate or a slab formed by combining metal folded plates and concrete, and those slabs. It is also possible to use one in which a heat insulating layer is laminated on top. It is preferable that the roof base 2 can support the screw 6 (see FIG. 2) for fixing the seat fixing unit 1 in a retaining state.

The heat insulating material 4 is a plate-shaped member made of a heat insulating material. As the material of the heat insulating material 4, for example, various materials such as polystyrene, urethane, and isocyanate can be adopted. Further, the waterproof sheet 3 shown in FIG. 1 has flexibility and is made of, for example, a synthetic resin such as vinyl chloride.

A plurality of the sheet fixing units 1 are arranged at intervals with respect to the roof base 2, and the waterproof sheet 3 is fixed to the roof base 2 by using the plurality of sheet fixing units 1.

As shown in FIGS. 1 to 3, the seat fixing unit 1 includes a first member D1 and a second member D2. As shown in FIG. 2, the first member D1 has a disc-shaped plate-shaped member 5 as a first plate-shaped portion and a roof base 2 which is freely insertable into the plate-shaped member 5 and is provided with a screw 6 (an example of a fastener). A washer portion 7 as a tubular portion fixed to the roof is provided. The plate-shaped member 5 is formed by pressing a metal plate, and a through hole 8 through which a washer portion 7 can be inserted is formed in a central portion of the disk. A portion on the outer peripheral side of the through hole 8 bulges upward, and an adhesive portion 9 as a first sheet fixing portion for fixing the waterproof sheet 3 is provided on the upper surface portion thereof. Therefore, the plate-shaped member 5 and the washer portion 7 constitute the first member D1 that can be fixed to the roof base 2 by using the screw 6.

The adhesive portion 9 is composed of, for example, a hot melt adhesive layer made of a polyester-based adhesive, an ethylene-vinyl acetate-based adhesive, a synthetic rubber-based adhesive, an olefin-based adhesive, or the like. When the waterproof sheet 3 is fixed by the adhesive portion 9, the electromagnetic induction heating device or the like is arranged from the front side of the waterproof sheet 3 in a state where the waterproof sheet 3 is placed on the upper side of the first member D1 of the sheet fixing unit 1. The waterproof sheet 3 can be adhered to the first member D1 by heating the plate-shaped member 5 to melt the hot-melt adhesive layer of the adhesive portion 9.

A recessed portion 11 recessed on the roof base 2 side is formed around the entire circumference of the through hole 8 in the plate-shaped member 5.

As shown in FIG. 2, the washer portion 7 is provided at the cylindrical main body portion 13 into which the screw 6 is inserted and at the upper end of the main body portion 13, and is formed to have a diameter larger than the outer diameter of the main body portion 13. It is provided with a shaped portion 14 and a countersunk portion 15 provided at the inner lower end of the main body portion 13 as a head locking portion on which the head of the screw 6 can be locked. The washer portion 7 is made of, for example, a metal material. A plurality of (four in the example shown in the figure) openings 16 are formed in the main body 13 (an example of the inner peripheral portion) of the washer portion 7 so as to be inserted in the radial direction at intervals in the circumferential direction. .. The washer portion 7 may be made of a synthetic resin material.

As a connecting portion 18 for connecting the first member D1 and the second member D2, a locking member 21 mounted on the washer portion 7 is provided on the side of the first member D1. As shown in FIG. 2, the locking member 21 includes a plurality of plate-shaped fitting wall portions 23 and a plurality of fitting walls that are fitted to the openings 16 of the washer portion 7 (two in the example shown in FIG. 2). It has a plate-shaped bottom portion 24 that connects the end portions of the portion 23 on the side of the roof base 2. The bottom 24 is formed in an annular shape. The fitting wall portion 23 is configured to be able to fit into the opening 16 of the washer portion 7. Specifically, the fitting wall portion 23 is provided on the upper outer peripheral side of the fitting portion 25 to be fitted to the opening portion 16 of the washer portion 7, and is locked to the upper end of the opening portion 16. It has a locking portion 26 and a pair of contact portions 27 extending on both sides in the circumferential direction on the upper inner peripheral side of the fitting portion 25.

As shown in FIG. 3, the second member D2 includes a plate-shaped member 17. The plate-shaped member 17 has the same configuration as the plate-shaped member 5 of the first member D1, and the metal plate is formed into a disk shape by press working. The plate-shaped member 17 is formed in a shape without holes. An adhesive portion 20 made of a hot melt adhesive layer as a second sheet fixing portion to which the waterproof sheet 3 is fixed is provided on the back surface portion of the plate-shaped member 17.

As a connecting portion 18 for connecting the first member D1 and the second member D2, a screw-shaped portion 31 (an example of a second locking portion) is provided on the side of the second member D2. The screw-shaped portion 31 is erected on the back surface of the plate-shaped member 17 toward the side of the first member D1. The screw-shaped portion 31 is inserted into the locking member 21 in the vertical direction and screwed to expand the diameter of the locking member 21. On the surface 17a of the plate-shaped member 17, two rectangular recesses 17b are formed at positions surrounding the screw-shaped portion 31. The recess 17b is provided to rotate the second member D2 around the axis of the screw-shaped portion 31 by using a jig (not shown).

Next, an example of a sheet fixing method in which the waterproof sheet 3 is installed on the roof base 2 using the sheet fixing unit 1 will be described.

As shown in FIG. 4, first, a step of fixing the plate-shaped member 5 of the first member D1 in which the through hole 8 for inserting the screw 6 is formed to the roof base 2 with the screw 6 is performed. In the first member D1, the plate-shaped member 5 and the washer portion 7 are combined in advance (see FIG. 4). Then, the first member D1 is installed on the roof base 2 on which the heat insulating material 4 is laid. For installation, the lower end of the washer portion 7 is pierced into the heat insulating material 4, and the screw 6 inserted inside the washer portion 7 is screwed in. In this case, a hole for inserting the washer portion 7 may be formed in advance at a position corresponding to installation in the heat insulating material 4. The screw 6 is screwed until the flange-shaped portion 14 of the washer portion 7 fits into the recessed portion 11 formed around the through hole 8 of the plate-shaped member 5. The washer portion 7 is fixed to the roof base 2 by the screw 6, and the plate-shaped member 5 is fixed by the washer portion 7 pressing the plate-shaped member 5.

Next, as shown in FIG. 5, the locking member 21 is inserted into the washer portion 7, and the locking member 21 is assembled to the washer portion 7. As shown in FIG. 8, a plurality of fitting wall portions 23 of the locking member 21 are fitted into a plurality of openings 16 of the washer portion 7. As a result, the locking member 21 is positioned and held by the washer portion 7 in a state where the bottom portion 24 is located in the middle portion of the washer portion 7 in the axial center direction. The bottom 24 of the locking member 21 is formed with a circular hole 28 for locking the tip 32 of the screw-shaped portion 31 (second locking portion) as the first locking portion. In the locking member 21, the fitting wall portion 23 is bent in the opening 16 by the axial force from the screw-shaped portion 31 (second locking portion) acting on the hole portion 28 (first locking portion). It is configured to be elastically deformable.

The locking member 21 is provided with two convex portions 28a and 28a at positions facing each other in the hole portion 28. When the locking member 21 is inserted into the washer portion 7 through the through hole 8 of the plate-shaped member 5, a plurality of fitting wall portions 23 are slidably guided to the inner peripheral surface of the main body portion 13 to fit into the opening portion 16. , A part of the bottom portion 24 is mounted on the washer portion 7 in a state of being placed on the lower portion of the opening portion 16. In the above process, the first member D1 of the seat fixing unit 1 can be installed.

Next, a step of laying the waterproof sheet 3 on the first member D1 is performed (see FIGS. 5 and 6). After installing the first member D1 on the roof base 2, the waterproof sheet 3 is spread over the plate-shaped member 5 of the first member D1 and installed so as to cover it, and the waterproof sheet 3 is loosened.

Next, a plate-shaped second member D2 having no holes is placed on a portion of the waterproof sheet 3 located above the first member D1, and a screw-shaped portion 31 (second locking) penetrating the waterproof sheet 3 is placed. A step of connecting the second member D2 to the first member D1 by means of an example of a portion and a connecting tool) is performed. By locking the screw-shaped portion 31 on the side of the second member D2 to the hole 28 of the locking member 21 on the side of the first member D1, the first member D1 and the second member D2 are in a connected state ( 6 and 7).

The screw-shaped portion 31 is integrally formed with the plate-shaped member 17 of the second member D2, and has a spiral screw groove 32a at the tip portion 32. The tip portion 32 of the screw-shaped portion 31 is provided so as to be screwed into the hole portion 28 of the bottom portion 24 of the locking member 21 so as to be mounted. The second member D2 is configured to hold the position in the axial direction with respect to the locking member 21 by inserting and inserting the screw-shaped portion 31 into the locking member 21 and rotating the second member D2.

By rotating the second member D2 in the vertical direction of the roof base 2 with respect to the first member D1, the screw-shaped portion 31 is screwed, and the first sheet fixing portion 9 and the second sheet fixing portion 20 come closer to each other. However, the hole 28 (first locking portion) and the screw-shaped portion 31 (second locking portion) are in a locked state. Specifically, after the waterproof sheet 3 is laid from the state shown in FIG. 5, the screw-shaped portion 31 of the second member D2 is pressed against the surface of the waterproof sheet 3, and the waterproof sheet 3 is penetrated by the screw-shaped portion 31. .. After that, the screw-shaped portion 31 of the second member D2 is inserted into the locking member 21 (see FIG. 6). By rotating the screw-shaped portion 31 of the second member D2 from the state shown in FIG. 6, the screw groove 32a of the screw-shaped portion 31 is elastically locked to the convex portions 28a and 28a of the hole portion 28 of the bottom portion 24. (See FIG. 7). The second member D2 can be rotated by using a jig (not shown) that can be inserted into the recess 17b formed on the surface 17a of the plate-shaped member 17. The second member D2 is provided to rotate around the axis of the screw-shaped portion 31.

In this way, the screw-shaped portion 31 of the second member D2 is properly connected to the locking member 21 of the first member D1. Further, since the tip portion 32 of the screw-shaped portion 31 is provided with a large diameter, the fitting wall portion 23 of the locking member 21 is expanded radially outward due to elastic deformation, and is radially outward. The diameter is expanded. As a result, it is possible to prevent the second member D2 from coming off with respect to the first member D1. In this way, as shown in FIG. 7, the connection of the second member D2 to the first member D1 is completed.

Next, a step of fixing the upper surface of the first member D1 and the back surface of the waterproof sheet 3 and a step of fixing the lower surface of the second member D2 and the front surface of the waterproof sheet 3 are performed. In the present embodiment, the step of fixing the upper surface of the first member D1 and the back surface of the waterproof sheet 3 and the step of fixing the lower surface of the second member D2 and the front surface of the waterproof sheet 3 are performed on the upper surface of the second member D2. Simultaneously by induction heating from the side.

Specifically, an induction heating device (not shown) is applied to a portion corresponding to the second member D2 on the surface side of the waterproof sheet 3, and the plate-shaped member 5 (first member D1) and the plate-shaped member are heated by the induction heating device. The hot melt adhesive layer of the adhesive portions 9 and 20 applied to the adhesive surface of the member 17 (second member D2) is simultaneously melted, and the waterproof sheet 3 is welded to the adhesive portions 9 and 20. As a result, the waterproof sheet 3 is fixed to the adhesive portions 9 and 20, and the waterproof sheet 3 is supported on the roof base 2 via the screw 6 and the sheet fixing unit 1. If a plurality of sheet fixing units 1 are adhered to the waterproof sheet 3, the installation of the waterproof sheet 3 is completed.

In this way, the plate-shaped member 5 (first member D1) and the plate-shaped member 17 (second member D2) are connected to each other by using the connecting portion 18, so that the waterproof sheet 3 installed on the roof base 2 is used. Can exert a waterproof effect.

In the state where the waterproof sheet 3 is laid, the waterproof sheet 3 is only placed on the heat insulating material 4 in a range other than the installation location of the sheet fixing unit 1. The waterproof sheet 3 may flutter due to other factors. Even in such a case, since the tip portion 32 of the screw-shaped portion 31 and the hole portion 28 of the locking member 21 are non-rotatably locked, the locking member 21 is prevented from coming off of the screw-shaped portion 31. Will be done.

In the case of the sheet fixing unit 1 having the above configuration, when the waterproof sheet 3 is installed, the screw-shaped portion of the second member D2 is attached to the locking member 21 assembled to the washer portion 7 of the first member D1. It can be handled by a simple operation of pushing 31 in and rotating it.

When a locking member 21 separate from the washer portion 7 of the first member D1 is used as the connecting portion 18 as in the present configuration, for example, the axis of the screw-shaped portion 31 in the direction away from the roof base 2. When a force is applied, the fitting wall portion 23 of the locking member 21 can be bent. In this way, the bending of the locking member 21 can absorb the axial force acting on the screw-shaped portion 31. As a result, the screw-shaped portion 31 of the second member D2 is less likely to be damaged due to contact with the locking member 21. As a result, the connected state of the first member D1 and the second member D2 can be stably maintained.

Further, for example, when the waterproof sheet 3 having a large thickness is installed with respect to the heat insulating material 4, the fitting wall portion 23 of the locking member 21 approaches the waterproof sheet 3 at the opening 16 of the washer portion 7. Can be bent. In this way, the locking member 21 is deformed according to the thickness of the waterproof sheet 3, so that the shapes of the washer portion 7 and the locking member 21 are changed when the waterproof sheet 3 having a different thickness is installed on the roof base 2. You can respond without doing anything.

[Another Embodiment]
(1) In the above embodiment, an example in which the plate-shaped member 5 and the washer portion 7 are provided as the first member D1 is shown, but the first member D1 does not include the washer portion 7 and is only the plate-shaped member 5. It may be configured.

(2) In the above embodiment, the plate-shaped member 5 and the washer portion 7 constituting the first member D1 are shown as separate bodies, but instead of this configuration, the plate-shaped member 5 and the washer are shown. The portion 7 may be integrally formed of a metal material.

(3) In the above embodiment, the washer portion 7 and the locking member 21 constituting the first member D1 are shown as separate bodies, but instead of this configuration, as shown in FIG. 9, The washer portion 7 may be provided with a first locking portion for locking to the second locking portion (screw-shaped portion 31) of the second member D2 without the locking member 21. In this case, the first locking portion is composed of, for example, a convex portion 13a projecting from the inner peripheral side of the main body portion 13. Further, as shown in FIG. 10, the second locking portion provided on the second member D2 may be configured by a tubular portion 34 erected on the back surface of the plate-shaped member 17. In this case, an engaged portion 15a (first locking portion) is erected above the countersunk portion 15 of the washer portion 7, and is inside the tip side of the tubular portion 34 provided on the plate-shaped member 17. An engaging portion 35 (second locking portion) projecting to the peripheral side is provided. The engaging portion 35 on the side of the second member D2 is engaged with the engaged portion 15a on the side of the first member D1, so that the first member D1 and the second member D2 are connected.

(4) In the above embodiment, the first locking portion of the first member D1 (the hole 28 of the locking member 21 or the convex portion 13a of the washer portion 7) has the second locking portion (screw-shaped) of the second member D2. An example is shown in which a part 31) is made to enter and then rotated to lock both parts. Instead of this, there may be a configuration in which both are locked by simply inserting the second locking portion of the second member D2 into the first locking portion of the first member D1. Further, another lock configuration may be adopted as a structure for connecting the second member D2 to the first member D1.

(5) In the above embodiment, the second member D2 has a screw-shaped portion 31 as a second locking portion, but the first member D1 has a screw-shaped portion as a first locking portion. The second member D2 may have a hole or the like in which the screw-shaped portion is locked as the second locking portion.

(6) In the above embodiment, the waterproof sheet 3 is made of a synthetic resin sheet material such as vinyl chloride, but the present invention is not limited to this, and other known materials (for example, rubber). Or TPE << thermo-plastic elastomer >>, etc.) may be used.

(7) In the above embodiment, the first member D1 and the second member D2 show that the adhesive portions 9 and 20 are composed of a hot melt adhesive layer, but the present invention is not limited to this. The adhesive portions 9 and 20 have a configuration in which the waterproof sheet 3 is adhered to the first member D1 and the second member D2 by using another known adhesive previously applied when the waterproof sheet 3 is laid. You may.

(8) In the above embodiment, the plate-shaped member 5 of the first member D1 is fixed to the roof base 2 by the screw 6, but the screw 6 is fixed by using a plug anchor, not limited to the screw 6. A configuration or a configuration in which a nail is driven in and fixed may be used.

(9) A seal member (not shown) that seals between the outer peripheral portion of the plate-shaped member 17 constituting the second member D2 and the waterproof sheet 3 may be arranged. With such a configuration, the waterproof effect of the waterproof sheet 3 can be further enhanced.

INDUSTRIAL APPLICABILITY The present invention can be applied to a waterproof sheet fixative that fixes a waterproof sheet provided along the waterproof substrate to the waterproof substrate.

1: Sheet fixing unit 2: Roof base (waterproof base)
3: Waterproof sheet 4: Insulation material 5: Plate-shaped member 6: Screw 7: Washer part 8: Through hole 9: Adhesive part (first sheet fixing part)
13: Main body 13a: Convex part (first locking part)
15: Countersunk portion 15a: Engaged portion 16: Opening portion 17: Plate-shaped member 18: Connecting portion 20: Adhesive portion (second sheet fixing portion)
21: Locking member 23: Fitting wall part 24: Bottom part 28: Hole part (first locking part)
28a: Convex portion 31: Screw-shaped portion (second locking portion)
32: Tip 32a: Thread groove D1: First member D2: Second member

Claims (8)

A sheet fixing unit that fixes a waterproof sheet laid on a waterproof base to the waterproof base.
A first member in which a through hole for inserting a fastener is formed and fixed to the waterproof base by the fastener, and a first member.
A second member formed in a shape without holes and placed above the first member,
A connecting portion for connecting the first member and the second member is provided.
The upper surface of the first member is provided with a first sheet fixing portion for fixing the back surface of the waterproof sheet, and the second sheet fixing portion for fixing the front surface of the waterproof sheet to the lower surface of the second member. Seat fixing unit equipped with. The sheet fixing unit according to claim 1, wherein the back surface of the second member is formed in a shape that follows the shape of the surface of the first member. The sheet fixing unit according to claim 1 or 2, wherein the connecting portion connects the first member and the second member while being passed through the through hole. The first locking portion provided on the back surface side of the first member and the first locking portion provided on the back surface side of the first member are erected on the back surface of the second member toward the side of the first member and penetrated through the through hole. A second locking portion that is locked to the first locking portion is provided.
At least one of the first locking portion and the second locking portion is provided with a screw-shaped portion.
By rotating the second member in the vertical direction of the waterproof base with respect to the first member, the screw-shaped portion is screwed, and the first sheet fixing portion and the second sheet fixing portion come closer to each other. However, the seat fixing unit according to any one of claims 1 to 3, wherein the first locking portion and the second locking portion are in a locked state. The first locking portion provided on the back surface side of the first member and the first locking portion provided on the back surface side of the first member are erected on the back surface of the second member toward the side of the first member and penetrated through the through hole. A second locking portion that is locked to the first locking portion is provided.
The first member is engaged with the plate-shaped first plate-shaped portion provided with the first sheet fixing portion and the through hole, and is locked to the through hole, and the through hole is directed toward the waterproof base side. A tubular washer portion that is extended and fixed to the waterproof base by the fastener is provided.
The first locking portion is provided on the inner peripheral portion of the washer portion.
The seat fixing unit according to any one of claims 1 to 4, wherein the second locking portion is locked to the first locking portion while being inserted into the washer portion. A plurality of openings are formed in the inner peripheral portion of the washer portion, and a plurality of openings are formed.
The connecting portion has a plurality of plate-shaped fitting wall portions that fit into the opening and a plate-shaped bottom portion that connects the ends of the plurality of fitting wall portions on the side of the waterproof base. Equipped with a stop member,
The locking member is positioned and held by the washer portion in a state where the bottom portion is located in the middle portion in the axial core direction of the washer portion by fitting the plurality of fitting wall portions into the plurality of openings. Is configured as
A hole for locking the tip of the second locking portion is formed in the bottom portion as the first locking portion.
The locking member is configured to be elastically deformable so that the fitting wall portion is flexed in the opening by an axial force from the second locking portion acting on the first locking portion. Item 5. The seat fixing unit according to Item 5. It is a sheet fixing method of fixing a waterproof sheet laid on a waterproof base to the waterproof base.
A step of fixing a plate-shaped first member having a through hole for inserting a fastener to the waterproof base by the fastener.
The process of laying the waterproof sheet on the first member and
A plate-shaped second member having no holes is placed on a portion of the waterproof sheet located above the first member, and the second member is used as the first member by a connecting tool penetrating the waterproof sheet. The process of connecting and
The step of fixing the upper surface of the first member and the back surface of the waterproof sheet,
A sheet fixing method comprising a step of fixing the lower surface of the second member and the surface of the waterproof sheet. The step of fixing the upper surface of the first member and the back surface of the waterproof sheet and the step of fixing the lower surface of the second member and the surface of the waterproof sheet are induced and heated from the upper surface side of the second member. The sheet fixing method according to claim 7, which is performed simultaneously with the above method.

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