JP2001115608A - Fixing member for laying waterproof sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixing member for laying a waterproof sheet capable of preventing damage to the waterproof sheet laid on the upper face thereof or a heat insulating layer arranged on the lower face thereof due to heat and firmly fusion bonding to the waterproof sheet with high durability, without causing deformation during fixation and installation and generating overheat at the peripheral end due to high frequency heat. SOLUTION: A plate body, on which is integrally laminated a conductive porous material having a plurality of bonding holes vertically passing through the surface or middle of a member body having a thermoplastic resin layer, has a spacing setting on the lower face of a central portion and a reinforcing protruded edge at the lower face of a peripheral edge portion so that the upper face is formed flat. Otherwise, the upper face of a fixing member for placing the waterproof sheet is formed in a gently spherical shape.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a laying fixing member used for laying a waterproof sheet on a structure to be waterproofed.

[0002]

2. Description of the Related Art Conventionally, a waterproof sheet made of a synthetic resin is laid on the surface of an outdoor frame, such as a building or a house, which requires waterproofing, in order to prevent infiltration of rainwater or the like by using an insulating method. Is commonly done. With this insulation method, a disc-shaped laying fixing member made of, for example, a thermoplastic resin-coated steel sheet such as a vinyl chloride resin, is fixed to the surface of the body of the structure by a fixing tool such as an open leg nail, a curl plug, or a screw nail. A large number of fixedly installed in a dotted state, and in many cases, a waterproof sheet made of a resin having compatibility with the thermoplastic resin is stretched over the surface of the structure, and is joined to the laying fixing member by heat. Or laid by bonding with a solvent or an adhesive.

[0003] However, in the method of joining by heat, there is a possibility that an operator touches a heat source to cause a burn, which is not preferable in terms of work safety and hygiene. In addition to the complicated work required to apply the adhesive and the adhesive, the workability and productivity are inferior, and it is difficult for the worker to inhale the vapor of these chemicals during the application work. Was not preferable for safety and health.

Therefore, a high-frequency welding apparatus is used as a means for laying a waterproof sheet that solves the above-mentioned problem. For example, a high-frequency welding apparatus such as the steel sheet of a laying fixing member made of a thermoplastic resin-coated steel sheet is used. A means for laying a waterproof sheet by high-frequency heating has been put to practical use, in which a plate-like body in which a dielectric material capable of induction heating by irradiation with water is integrated with a waterproof sheet. The plate-like body is often in the shape of a disk or a square plate, but some have a vertical cross section in a trapezoidal shape.

[0005] As described above, a specific example of a laying fixing member for laying a waterproof sheet on a structure using high-frequency heating is as follows.

First, a laying fixing member (51) shown in FIG.
Is a fixing member for laying made of the above-mentioned thermoplastic resin-coated steel sheet, and is a conductor piece (5) made of a metal piece such as a plate-shaped iron piece.
The thermoplastic resin layer (52) compatible with the waterproof sheet is laminated on the upper surface of 3) with an adhesive or the like, and is disclosed in JP-A-4-254649.
The mounting hole (54) of the fixing member (51) is formed in a mortar shape so that the head of the fixing tool is sunk below the surface of the fixing member (51).

A laying fixing member (6) shown in FIG.
1) A thermoplastic resin in which a thermoplastic resin sheet or a metal film in which metal fibers or magnetic powders are dispersed and kneaded and which are dispersed and kneaded is internally laminated on the upper surface of a member main body (62) made of a thermoplastic resin plate. It has a configuration in which layers of an induction heating adhesive (63) made of a sheet are laminated, and is disclosed in JP-A-7-158395.

[0008]

The fixing members for laying a waterproof sheet according to each of the above-mentioned conventional examples can be joined to the waterproof sheet by using high-frequency induction heating. It does not use a heat source itself, so there is no risk of injury to workers, and it does not use solvents or chemicals such as adhesives to ensure a sanitary and excellent working environment. Although they have common advantages such as what they can do, they have the following problems.

That is, in the fixing member (51), as shown in FIG. 12 (a), the upper surface of the laying fixing member (51) fixed and installed on the surface of the frame (7) using the fixing tool (5). Then, a flat oscillating surface (9h) of the high-frequency heating device (9) is brought into contact with the fixing member (51) via the waterproof sheet (6) so that the center portion thereof coincides with the center portion of the fixing member (51).
By oscillating high frequency, the thermoplastic resin layer (5
2) and the waterproof sheet (6) are melt-bonded. In this case, since the conductor piece (53) is made of a metal piece such as a plate-like iron piece, the efficiency of induction heating is high and heat is generated with high strength. Therefore, the peripheral edge (51e) of the fixing member (51) is excessively heated. Tend to be. Therefore, the contact portion (6a) of the waterproof sheet (6) in contact with the peripheral edge portion (51e) is also excessively heated and thermally deformed, thereby deteriorating the appearance quality. There is a risk of significantly impairing the

The adhesive strength between the conductor layer (53) and the thermoplastic resin layer (52) by the adhesive is not generally strong, and the durability of the conductor layer (53) is further reduced by the heat generated by the conductor layer (53). However, there is a problem that it is difficult to apply the waterproof sheet (6) as a fixing member for laying the waterproof sheet in the installation and fixing of the waterproof sheet (6) by high frequency.

Further, in a heat insulating construction in which a heat-sensitive material such as foamed polyurethane or foamed polystyrene is used as a heat insulating layer (8) on the surface of the frame (7), a conductor layer (53) that generates excessive heat is used. The contact portion (8a) of the heat insulating layer (8) that comes into contact with the material is melted and deformed or collapsed to produce a large hollow-shaped defective portion below the laying fixing member (51), and the intended heat insulating performance There is a problem that can not be secured.

In the fixing member (61), FIG.
As shown in (b), when the fixture (5) is fixedly installed on the surface of the frame (7) and the driving by the fixture (5) is excessively strong, the peripheral edge of the fixing member (61) is used. The portion (61e) is deformed into a warped state, and the relative position with respect to the oscillation surface (9h) of the high-frequency heating device (9) is closer, but the inner portion is depressed and the high-frequency heating device (9) is depressed. ), The oscillation surface (9h) is relatively distant in the inner part, the heat generation of the induction heating adhesive (63) is not sufficient, and the fusion bonding of the waterproof sheet (6) and the fixing member (61) is performed. The strength is low.

[0013] In addition, when the induction heating adhesive (63) is a thermoplastic resin sheet in which metal fibers or magnetic powders are dispersed and kneaded, the fixing member (61) may be a mixture of metal fibers or magnetic powders. When the amount is small, it is difficult to generate heat, and when the mixing amount is increased, the strength of the laying fixing member itself decreases, and in the case of a thermoplastic resin sheet in which a metal film is internally laminated, the bonding strength between the thermoplastic resin and the metal film is reduced. Since it is generally low, there is a problem that delamination between the two occurs, and the function as a laying fixing member is impaired over time.

In particular, when the induction heating adhesive (63) is a thermoplastic resin sheet in which metal fibers or magnetic powders are dispersed and kneaded, the high-frequency oscillation time has to be increased by itself. 61e), the peripheral edge portion (61e) of the laying fixing member is heated excessively more than other portions even if the laying fixing member is fixed and installed in an appropriate state so that the laying fixing member (51) does not rise. Similarly, the peripheral edge (61
e) There is a risk that the waterproof sheet (6) adjacent to e) will be excessively heated to cause thermal deformation of the contact portion (6a), thereby deteriorating the appearance quality or causing damage by melting, thereby impairing the waterproof function such as water leakage prevention. Not only that, but also the laying fixing member (61) itself has a problem that the peripheral edge portion (61e) is thermally deformed, thereby deteriorating the appearance of the surface of the adjacent waterproof sheet (4).

By the way, the present applicant has previously proposed a waterproof sheet laying fixing member shown in FIG. 11 in order to solve the above problems. The fixing member (71) for laying the waterproof sheet is provided with a plurality of joining holes (73a) vertically penetrating the surface or the middle of the member body (72) made of a thermoplastic resin compatible with the waterproof sheet. The conductive porous body (73) made of a metal mesh sheet or a porous plate (not shown) provided with a laminate is integrally laminated.

The laying fixing member (71) solves the problems of the fixing members (51) and (61). In particular, the conductor piece (5) of the fixing member (51) is used.
3) The problem of melting and destruction of the waterproof sheet (6) and the heat insulating layer (8) due to the heat generation of the strength and the deterioration of the durability due to the decrease in the adhesive strength between the conductor piece (53) and the thermoplastic resin layer (52) are solved. In addition, the fixing member (61) solves problems such as weak bonding strength between the waterproof sheet (6) and the fixing member (61), high thermal deformability of the member itself, and weak mechanical strength. it can.

That is, in the fixing member (71), the conductive porous body (73), which is induction-heated by high frequency, is laminated and integrated on the surface or intermediate portion of the member main body (72), so that it should be melt-bonded. It is close to the waterproof sheet (6), enables the fusion bonding in a short time and firmly, and can reduce the heat conduction to the back side. It has an excellent effect that the influence of collapse is small.

However, according to a subsequent study by the present inventor, as shown in FIG. 12 (c), the fixing member (71) is such that the peripheral edge (71e) of the fixing member is smaller than other parts. The member body (72) undergoes thermal deformation in the vicinity of the peripheral edge (71e) due to excessive heating, so that the conductive porous body (73) and the waterproof sheet (6) relatively come closer to each other, and thus become waterproof. It is inevitable that the sheet (6) is excessively heated, causing thermal deformation of the contact portion (6a) to deteriorate the appearance quality, or causing the melt fracture to impair the waterproof function such as water leakage prevention. found.

By the way, the high frequency oscillation pattern and intensity oscillated from the oscillation surface (9h) of the high frequency heating device (9) toward the waterproof sheet laying fixing member depend on the shape of the high frequency oscillation device (9) and the inside thereof. The number of turns of the heating work coil, the number of turns, the high-frequency output applied thereto, the frequency, the oscillation time, and the like are determined. Normally, a high-frequency heating device (9) for heating this kind of laying fixing member is composed of a bottomed cylindrical oscillation head having a circular flat oscillation surface (9h), and a heating work coil is wound inside. The high-frequency oscillation pattern (P) oscillated from the oscillation surface (9h) is designed to be substantially ring-shaped.
In this case, the oscillation pattern (P) of the high-frequency heating device (9) and the fixing member (71) are generally such that the oscillation pattern (P) is located at a position closer to the periphery of the fixing member (71), as shown in FIG. It is designed to be effectively oscillated inside.

Here, taking the proposed fixing member (71) as an example, looking at the relationship between the oscillation pattern (P) and the fixing member, the center of the oscillation pattern (P) and the fixing member (71) will be described. In the state in which the centers of ()) coincide with each other, if the peripheral edge (71e) is outside the pattern (P) and the upper surface of the fixing member (71) is close to the oscillation surface (9h), The conductive porous body (73) in the pattern (P) is quickly and strongly heated. In other words, the conductive porous body (73) has the oscillation pattern (P).
(P ') corresponding to is heated intensively to heat the member body (72) in the vicinity thereof. On the other hand, since the central portion and the peripheral edge portion (71e) of the fixing member (71) do not correspond to the oscillation pattern (P), they are not heated strongly.

In this case, after appropriately setting the high-frequency output, the oscillation time and the like, the oscillation surface (9h) is brought into contact with the center of the oscillation member (71) so as to correspond to the center of the fixing member (71), and the whole surface is covered. When the joining operation is performed by pressing evenly, even if the peripheral edge (71e) is heated, the peripheral edge (71e) is not largely deformed by heat, and the heat of the waterproof sheet (6) and the heat insulating layer (8) is not increased. Deformation is relatively mild.

However, as shown in FIG. 14, the center of the oscillation surface (9h) is shifted from the center of the fixing member (71) (solid line) via the waterproof sheet (6), and the oscillation surface (9h) Is inclined (dashed line) against the plane of the fixing member (71), the pressing force at the time of fusion joining is applied to the peripheral end portion (71e), and the member main body in that portion is applied. The thermal deformation (72a) of (72) increases, and the conductive porous body (73) comes closer to the oscillating surface (9h) and not only heats that portion to a higher temperature, but also fixes the fixing member (71). The high temperature is transmitted to the lower surface of the. As a result, thermal deformation of the waterproof sheet (6) and the heat insulating layer (8) occurs as described above, resulting in damage such as melting and destruction.

In this case, it is conceivable as one solution to select a high-frequency heating device (9) having an oscillating surface (9h) whose area of the oscillating surface (9h) is smaller than the area of the fixing member (71). It is actually difficult to reliably contact the surface (9h) with the fixing member (71) through the waterproof sheet (6) in a state in which it cannot be seen, and it is difficult to completely prevent the above phenomenon. It is.

The present invention has been made in view of such a technical background,
In order to solve the above-mentioned problems of the conventional waterproof sheet laying fixing member, the heating state is basically set by using the laminated structure of the member body and the conductive porous body proposed by the present applicant. First, a laying fixing member in which a conductive porous body capable of performing lamination and integration with a thermoplastic resin is laminated and integrated close to the surface side, and firstly, a portion heated by high frequency is reinforced in shape. Secondly, the present invention has been completed by paying attention to the fact that a fixing member for laying having a form capable of suppressing the heat generation temperature of the conductive porous body at the peripheral portion to be low can be used.

That is, the present invention relates to a fixing member for laying a waterproof sheet for laying a waterproof sheet by high-frequency heating, wherein the thermal deformation of the thermoplastic resin at the peripheral edge of the fixing member can be reduced. The present invention provides a waterproof sheet laying fixing member that can prevent damage to a waterproof sheet laid on the upper surface or a heat insulating layer laid on the lower surface due to heat, is strongly melt-bonded to the waterproof sheet, and has high joining durability. The purpose is to do.

[0026]

In order to achieve the above object, a first aspect of the present invention is a fixing member for laying a waterproof sheet for joining a waterproof sheet made of a thermoplastic resin to a structure to be waterproofed. , Comprising: a member main body made of a thermoplastic resin; and a conductive porous body having a plurality of joining holes penetrating vertically, which are laminated and integrated at a surface portion or an intermediate portion of the member body, and a fixing tool is provided at a central portion. A mounting pedestal is provided around the mounting hole on the lower surface side, and a reinforcing ridge protruding downward is provided at a peripheral edge portion. The gist of the present invention is a fixing member for laying a waterproof sheet.

According to the fixing member for laying the waterproof sheet according to the first aspect of the present invention, the waterproof sheet is arranged on the upper surface of the fixing member, and the oscillation surface of the high-frequency heating device is contacted from above with the waterproof sheet through the waterproof sheet. Is generated, the conductive porous body generates heat, and the fixing member body made of a thermoplastic resin in the vicinity thereof is heated and melted. At this time, the lower surface of the fixing member is hard to be heated, and furthermore, the reinforcing projection is not softened by heating at the peripheral edge, and acts to support the member main body that is heated and melted near the conductive porous body. By such an action, the member body in the molten state serves to prevent the waterproof sheet adjacent to the conductive porous body from being excessively heated or damaged without being separated from the conductive porous body.

The spacing pedestal serves to prevent deformation in the event of strong driving of the fixture, and together with the reinforcing ridges, presses the high frequency heating device when melting and joining the waterproof sheet. It serves to prevent deformation of the fixing member and maintain flatness of the upper surface of the fixing member. Since the conductive porous body applied to the fixing member has the joining holes, the lamination and integration with the member main body are strong, and the rigidity of the fixing member itself can be increased.

According to a second aspect of the present invention, there is provided a fixing member for laying a waterproof sheet for joining a waterproof sheet made of a thermoplastic resin to a structure to be waterproof, comprising: a member body made of a thermoplastic resin; It consists of a conductive porous body having a plurality of bonding holes penetrating vertically, which are laminated and integrated on the surface or intermediate part of the surface part, and has a mounting hole for the fixture in the center part and a spherical surface with a loose upper surface The gist is a fixing member for laying a waterproof sheet, which is formed in a shape.

According to the fixing member for laying the waterproof sheet according to the second aspect of the present invention, the waterproof sheet is disposed on the upper surface of the fixing member, and the oscillation surface of the high-frequency heating device is contacted from above with the waterproof sheet through the waterproof sheet. Is generated, the conductive porous body generates heat, and the fixing member body made of a thermoplastic resin in the vicinity thereof is heated and melted. At this time, since the fixed member and the oscillating surface are in a state where the spherical surface (the upper surface of the fixed member) and the flat surface (the oscillating surface) face each other via the waterproof sheet, the spherical surface and the contact surface thereof are in contact with each other. In the relationship, the distance between the conductive porous body and the oscillating surface increases as going outward from the contact point, and accordingly, the heat generating action of the conductive porous body is suppressed. Excessive heat melting of the body does not occur. Further, even when the oscillation surface is abutted with a slight inclination, the relationship between the spherical surface and the contact surface is maintained and the same operation as described above is performed. In addition, the conductive porous body applied to the fixing member has a strong lamination and integration with the member body, and has a spherical upper surface.
The rigidity of the fixing member itself is further increased.

In a preferred embodiment of the fixing member for laying a waterproof sheet according to the second aspect of the present invention, a gap is provided around the lower surface of the fixing member for laying and around the mounting hole. A pedestal is provided. The spacing pedestal serves not only to prevent deformation due to strong driving of the fixing tool, but also to prevent deformation of the fixing member due to pressing of the high-frequency heating device when the waterproof sheet is melt-bonded.

In another preferred embodiment of the waterproof sheet laying fixing member according to the second aspect of the present invention, the waterproof member is provided on the lower surface side of the laying fixing member from the vicinity of the mounting hole. A plurality of radially extending reinforcing beams are provided. The reinforcing beam serves to prevent deformation of the fixing member even when the oscillation surface of the high-frequency heating device at the time of fusion bonding with the waterproof sheet is pressed in contact with the inclined surface.

Another preferred embodiment of the fixing member for laying the waterproof sheet according to the first invention and the second invention is as follows.
As described in claim 5, a convex curved edge having a radius of curvature of 0.5 mm or more is formed on the upper surface side of the peripheral edge of the laying fixing member. The convex curved edge has a shape as if the member main body and the conductive porous body were removed together, and no conductive porous body was present at the peripheral edge, and the heating and melting of the member main body did not occur. Hard to happen. Therefore, thermal deformation at the peripheral edge of the fixing member is more effectively prevented.

As described above, in the fixing member for laying a waterproof sheet according to the present invention, a conductive porous body having a plurality of joining holes is laminated and integrated on the surface or intermediate portion of a member body made of a thermoplastic resin. Since the laminated body of the member main body and the conductive porous body is strong, the conductive porous body that generates heat by high frequency is located on the surface or the intermediate portion of the member body. As a result, the relative position with respect to the oscillating surface, which comes into contact with the waterproof sheet via the waterproof sheet, becomes closer, and the heat generation efficiency is increased.

Further, since the peripheral edge of the fixing member is not excessively heated and is not thermally deformed, the waterproof sheet adjacent to the peripheral edge is excessively heated and abnormally thermally deformed. There is no. Further, in the fixing member, the lower surface of the member main body separated from the conductive porous body is less likely to be heated than the upper surface, so that the rigidity of the fixing member itself during fusion bonding with the waterproof sheet is maintained. In addition, in the case of heat insulation construction, the portion in contact with the heat insulation layer is not heated excessively, so that the heat insulation layer on the skeleton does not melt and collapse.

[0036]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to examples and drawings showing the examples, together with comparative examples.

FIG. 1 is a sectional perspective view showing a basic embodiment of the first invention of the present invention. The fixing member (1) for laying a waterproof sheet is a conductive porous member having a plurality of joining holes (3a) penetrating vertically, which are laminated and integrated on a surface portion or an intermediate portion of a member body (2) made of a thermoplastic resin. It consists of the body (3). The conductive porous body (3) is, for example, a metal net, and is a member body (2) made of a thermoplastic resin.
Is buried near the surface, and heats and melts the nearby thermoplastic resin by heat generated by high frequency. The fixing member (1) is usually formed in a disk shape, and a counterbore-shaped mounting hole (4) is provided at the center of the fixing member (1) for fixing the fixing member to the frame of the structure to be waterproofed. further,
A space pedestal (1a) is provided around the mounting hole (4) on the lower surface side of the fixing member (1), and a peripheral edge (1e) is provided.
Is provided with a protruding reinforcing edge (1b) projecting downward. The conductive porous body (3) is made of a conductive metal such as stainless steel, copper, or aluminum, and is formed in a net shape, for example, a porous plate shape in which a metal plate is provided with a large number of joining holes. (Not shown) is also applicable.

FIGS. 2A to 2C show another embodiment of lamination and integration of the main body 2 of the fixing member 1 and the conductive porous body 3. ) Shows a mode in which a part of the lower surface of the conductive porous body (3) is buried in the member body (2), and FIG. 2B shows a state in which a part of the upper surface of the conductive porous body (3) is left. FIG. 2C is a cross-sectional view showing a state in which the entirety of the conductive porous body (3) is embedded in an intermediate portion of the member main body (2). In each case, the waterproof sheet (6) to be melt-bonded to the upper surface is quickly heated by being laminated and integrated on the surface portion or the intermediate portion of the member body (2).

The embodiment shown in FIG. 2A is a conductive porous material (3).
In this case, the waterproof sheet (6) is slightly heated and melted by the heat generated by the heat, and is melt-bonded through the bonding hole (3a). In the embodiment shown in FIG. 2 (b), the member main body (2) is slightly heated. In the embodiment shown in FIG. 2 (c), the waterproof sheet (6) is indirectly heated by melting and heating the member main body (2) to melt-join the two. Things.

In this case, the state of FIG. 2A and the state of FIG.
Comparing the embodiments, the fusion bonding with the waterproof sheet (6)
The former is performed more quickly in time than the latter, and the heat transfer to the lower surface side is slower, so the influence of heat on the heat insulating layer is small and the laying work is easy. However, the waterproof sheet (6) is directly heated. There is a risk of abnormal deformation. Therefore, in the present invention, the fixing member (1) is configured not to cause the above-described thermal deformation and to prevent the thermal deformation.

FIG. 3 shows a state in which a waterproof sheet (6) is melt-bonded to the upper surface of the fixing member (1). The fixing member (5) fixed to the lower hole (7a) of the frame (7) of the structure (A) via the heat insulating layer (8) passes through the mounting hole (4). ). In this case, the spacing pedestal (1a) and the reinforcing projection (1b) of the fixing member (1) are formed flush with each other, and the lower surface thereof is in contact with the heat insulating layer (8). No contact elsewhere. The waterproof sheet (6) is arranged on the upper surface of the fixing member (1), and is contacted with the high-frequency heating device (9) via the waterproof sheet (6) to oscillate the high frequency and is melt-bonded.

At this time, in the waterproofing sheet laying fixing member (71) proposed earlier, the thermoplastic resin in the vicinity of the conductive porous body (73) at the peripheral edge (71e) becomes strong as shown in FIG. On the other hand, in the fixing member (1), the reinforcing convex edge (1b) provided below the peripheral edge (1e) of the fixing member (1) maintains the hardness without being heated and melted. As it is, it supports the heat-softened or heat-fused thermoplastic resin in the vicinity of the conductive porous body (3), and acts to prevent deformation of the member body (2). The lower surface of the fixing member (1) is hardly heated because it is separated from the conductive porous body (3), and furthermore, the spacing pedestal (1a) and the reinforcing convex edge (1).
Since the other parts except b) are not in contact with the heat insulating material (8), there is no danger of melting and breaking it.

The thickness (t) of the fixing member (1)
Is usually in the range of 2.5 to 4.0 mm, and the height (h) of the spacing pedestal (1a) and the reinforcing projection (1b) is usually in the range of 2.0 to 3.0 mm. . However, when the thickness (t) exceeds the above range, the appearance of the waterproof sheet (6) deteriorates because the swelling of the waterproof sheet (6) is conspicuous. Since the joint holding force is reduced, about 3.0 to 3.8 mm is desirable,
If the height (h) exceeds the above range, the swelling is conspicuous as in the case of the thickness, so that the external appearance is deteriorated. If the height (h) is less than the above range, the thermal deformation of the peripheral edge (1e) is prevented. Is reduced, it is desirable to be about 2.5 to 2.9 mm.
Further, the planar shape of the fixing member (1) is often a disk shape, and the diameter is usually about 60 to 70 mm.

FIG. 4 is a partial sectional perspective view showing a basic embodiment of the second invention of the present invention. The waterproof sheet laying fixing member (11) is a conductive porous body having a plurality of vertically-penetrating bonding holes (13a) which are laminated and integrated on a surface or an intermediate portion of a member body (12) made of a thermoplastic resin. (13). The fixing member (11)
The upper surface of the main body (12) made of a thermoplastic resin and the conductive porous body (13) is formed in a loose spherical shape, and a reinforcing convex edge is provided below the peripheral edge (11e). Except for having no, the configuration is basically the same as that of the waterproofing sheet laying fixing member (1) of the first invention. Therefore, the lamination and integration of the member main body (12) of the fixing member (11) and the conductive porous body (13) are the same as described in the first invention, as shown in FIGS. ) Is also applicable.

FIG. 5 shows a state in which the waterproof sheet (6) is melt-bonded to the upper surface of the fixing member (11). The fixing member (11) is fixedly installed by a fixing tool (5) fixed through a mounting hole (14) to a lower hole (7a) of the frame (7) via a heat insulating material (8). In this case, the fixing member (11) is not easily deformed due to its rigidity even if the fixing tool (5) is slightly driven.

The fixing member (11) is fixedly installed on the heat insulating layer (8) in a state where it is not in contact with the lower surface of the peripheral edge (11e) except for the lower surface, and the waterproof sheet (6) disposed on the upper surface is fixed. The oscillation surface (9) of the high-frequency heating device (9)
h) is abutted and oscillates a high frequency to be melt-bonded to the waterproof sheet (6).

At this time, the flat oscillation surface (9h) of the high-frequency heating device (9) is brought into contact with the fixing member (11) as parallel as possible, but the oscillation surface (9h) is In the relation of the contact surface to the curved surface of (11), the distance (n) between the oscillation surface (9h) and the conductive porous body (13) increases as the distance from the contact (m) increases,
The heat generation effect of the conductive porous body (13) gradually decreases as the conductive porous body (13) moves away from the oscillation surface (9h) and moves toward the peripheral edge (11e) of the fixing member (11). Become. As a result, the peripheral edge (11e)
The nearby member main body (12) is prevented from being thermally deformed because excessive heating is suppressed. Therefore, the conductive porous body (13) locally or abnormally deforms the waterproof sheet (6). The peripheral edge (11e) does not melt-collapse the heat insulating layer (8) in contact therewith. Moreover, even if the joining operation is performed in a state where the relative positions of the respective centers of the oscillation surface (9h) and the fixing member (11) are slightly shifted and inclined (chain lines), the above-described operation is still exerted.

If the radius of curvature of the spherical upper surface of the fixing member (11) is too small, it is not possible to obtain a fusion-bonded surface for securing the desired bonding strength with the waterproof sheet (6), and it is not so. If it is large, as described later, heat generation of the conductive porous body (13) at the peripheral edge (11e) cannot be suppressed, which is not preferable. Therefore, depending on the size or shape of the fixing member, for example, a diameter of 65 mm
In the case of a disk-shaped object, the radius of curvature of the upper surface is 200 to 300
It is appropriately set to about mm. When the radius of curvature of the upper surface is set to a large value within a range not exceeding 300 mm, the swelling of the surface of the waterproof sheet (6) joined to the fixing member is not noticeable and can be laid in a good appearance.

FIGS. 6 (a) and 6 (b) are views showing a preferred embodiment of the waterproof sheet laying fixing member of the second invention, and FIG. 6 (a) is an AA of FIG. 6 (b). FIG. 6B is a rear view. That is, the fixing member (1)
A spacing pedestal (11a) is provided at the center of the lower surface of 1). The lower surface of the pedestal (11a) has a peripheral edge portion (11a).
e) is flush with the lower surface of the fixing member (1).
When 1) is fixedly installed on the skeleton (8) by the fixing tool (5), the fixing member (11) functions to prevent the fixing member (11) from being deformed into a flat shape or to be warped. . Further, the pedestal (11a) is provided with the fixing member (1) by the pressure when the oscillation surface (9h) of the high-frequency heating device (9) is brought into contact with the upper surface via the waterproof sheet (6).
This also serves to prevent the deformation of 1).

FIGS. 7A and 7B are views showing another preferred embodiment of the fixing member for laying a waterproof sheet according to the second invention, and FIG. FIG. 7 (B) is a rear view. That is, a plurality of reinforcing beams (11c) radially extending from near the center of the lower surface of the waterproof sheet laying fixing member (11) toward the peripheral edge (11e) are provided. The lower surface of the beam (11c) is flush with the lower surface of the peripheral edge (11e), and when the fixing member (11) is fixed to the frame (7) by the fixing tool (5). This serves to prevent the fixing member (11) from being deformed into a flat shape. The beam (11c) prevents deformation of the fixing member (11) due to pressure when the oscillation surface (9h) of the high-frequency heating device (9) is brought into contact with the upper surface via the waterproof sheet (6). It also has the function of performing

The spacing pedestal (11a) and the reinforcing beam (11c) can be provided side by side as shown in FIGS. 7 (a) and 7 (b). The effect of preventing the deformation of the fixing member (11) by the pressure at the time of the contact of the oscillation surface (9h) can be further ensured.

FIGS. 8A and 8B show the waterproof sheet laying fixing member (1) according to the first and second inventions.
It is a longitudinal cross-sectional view which shows embodiment which deform | transformed (11), FIG.8 (a) is related to the said fixed member (1), FIG.8 (b) is related to the said fixed member (11).
That is, in each of the drawings, the fixing member (1) (11)
The upper surface side of the peripheral edge portion (1e) (11e) has a convex curved edge portion (1d) (11d) having a curvature radius of 0.5 mm or more.
It has been. When the peripheral edges (1e) and (11e) are formed as described above, the oscillation surface (9) of the high-frequency heating device (9) is formed.
h), even if the peripheral edge (1) is abutted against the upper surface of the fixing member (1) as shown by a chain line,
e) On the upper surface side of (11e), there is still a distance from the oscillation surface (9h), and the conductive porous body (3) has a peripheral edge (1).
e) Since the shape is cut off at (11e), there is no conductive porous body at the peripheral edges (1e) and (11e), and thermal deformation of the member main bodies (2) and (12) is prevented. Acts to be. At the same time, the peripheral edge (1e) (1
1e) Thermal deformation and melting collapse of the waterproof sheet (6) or the heat insulating layer (8) in the vicinity can be more reliably prevented.
In addition, if the radius of curvature on the upper surface side of the peripheral edge portions (1e) (11e) is less than 0.5 mm, the above effect cannot be expected. Therefore, it is preferably at least 1.0 mm, and the maximum is a radius of curvature substantially equal to the thickness of the fixing members (1) and (11).

[0053]

EXAMPLES Examples of the fixing member for laying a waterproof sheet according to the present invention will be described below along with comparative examples. The structure (A) to be laid by the waterproof sheet is a structure by a heat insulating construction method in which a heat insulating layer (8) made of a polyurethane foam is laid on a concrete frame (7). did.

Embodiment 1 The fixing member for laying a waterproof sheet of the first invention is applied, and FIG.
The shape shown in FIG. The fixing member (1)
A jig body (2) made of a polypropylene resin having a flat top surface (t) of 3.0 mm and a diameter of 65 mm and made of a disc-shaped polypropylene resin, a conductive porous body (3) is inserted, and a mounting hole is provided at the center. (4) is provided, and a mounting hole (4) is provided.
Pedestal (5) is further provided around the peripheral edge (1e).
Is located at the lower part of the projection (h) having a height of 2.0 mm.
b) was provided. The conductive porous body (3)
A 0.5 mm-thick stainless steel thin wire was plainly woven into a mesh-like body having an opening ratio of 58.4% for the joining hole (3a), and insert-molded in a buried state near the surface of the member body (2). .

Then, as shown in FIG. 3, the fixing member (1) obtained above is provided with a pilot hole (7a) in a frame (7) having a 25 mm thick heat insulating layer (8) spread on the surface. Using a fixture (5) made of open-leg nails having a length of 50 mm, a plurality of them were dispersedly arranged with their upper surfaces facing upward, and fixed and installed.

Next, a waterproof sheet (6) made of a polypropylene resin having a thickness of 1.5 mm is interposed on the surface of the frame (7) on which the plurality of fixing members (1) are fixedly installed, via a heat insulating layer (8). ), The oscillation surface (9h) of the high-frequency heating device (9) is brought into contact with the oscillating surface (9h) from directly above the fixing member (1) via the waterproof sheet (6), (500 kHz), and the fixed member (1) and the required portion of the waterproof sheet (6) are melt-bonded,
Laying work was completed. At this time, when the center of the oscillation surface (9h) coincides with the center of the fixed member (1) (condition A), when the center is slightly shifted (condition B), and when the center of the fixed member (1) and the peripheral edge are set. Melt joining was attempted under three kinds of joining conditions in the case where the position coincides with the vicinity of the part (1e) (condition C).

The fixing member (1) fused and joined as described above.
The bonding state between the waterproof sheet and the waterproof sheet (6) was evaluated by the following evaluation method, and the results are shown in Table 1. [Evaluation Method and Evaluation Criteria] -Measurement of Bonding Strength- A 180-degree peel test was performed in accordance with JIS K 6854.
That is, the fixed member after completion of the laying and the waterproof sheet melt-bonded to the fixed member were cut out in an integrated state, and then subjected to a test as a sample having a peel width of 20 mm. The evaluation of the bonding strength is excellent (◎) when it is 20 kgf / 20 mm or more, good (を) when it is less than 15 to 20 kgf / 20 mm,
Allows less than 10-15kgf / 20mm (△), 10kg
A value of less than f / 20 mm was regarded as unacceptable (x). -Surface condition- The visual condition and the finger touch method were used. The surface where the surface of the waterproof sheet at the fusion bonding portion was not roughened or deformed was evaluated as good (○), and the observed one was evaluated as poor (×). -Influence on the heat insulation layer-The visual and finger touch methods were used. The surface where the surface of the waterproof sheet at the fusion bonding portion was not roughened or deformed was evaluated as good (○), and the observed one was evaluated as poor (×).

Embodiment 2 The fixing member for laying a waterproof sheet according to the second invention is applied, and FIG.
6 (a) and 6 (b) were adopted. The fixing member (11)
Is a member main body (12) made of a disc-shaped polypropylene resin having a thickness (t) of 3.0 mm and a diameter of 65 mm, the upper surface of which is formed in a loose spherical shape having a radius of curvature of 267 mm.
, A conductive porous body (13) was inserted, a mounting hole (14) was provided in the center, and a spacing pedestal (11a) was provided around the mounting hole (14).
The conductive porous body (13) was a reticulated body similar to that of Example 1, and was formed by insert molding in the same buried state as that of Example 1.

Next, the fixing member (1) obtained above was used.
As shown in FIG. 5, as shown in FIG. Using 5), a plurality of pieces were dispersed and arranged fixedly with the upper surface facing upward.

Next, a waterproof sheet (16) made of a polypropylene resin having a thickness of 1.5 mm is interposed on the entire surface of the frame (7) on which a plurality of the fixing members (11) are fixedly mounted, via a heat insulating layer (8). ), The oscillation surface (9h) of the high-frequency heating device (9) is brought into contact with the oscillating surface (9h) from directly above the fixing member (11) via the waterproof sheet (6), and the high-frequency ( The fixed member (11) and the required portion of the waterproof sheet (6) were melted and joined to complete the laying operation. At this time, the oscillation surface (9
As for the positional relationship between the center of h) and the center of the fixing member (11), fusion bonding was attempted in three states (condition A, condition B, and condition C) in the same manner as in Example 1.

The fixing member (1) fused and joined as described above is used.
The bonding state between 1) and the waterproof sheet (6) was evaluated in the same manner as in Example 1, and the results are shown in Table 1.

COMPARATIVE EXAMPLE As a fixing member for comparison, one having the same structure as the conventional fixing member (71) shown in FIG. 11 was selected, except that it was a simple flat disk having a thickness of 3 mm and a diameter of 65 mm. Exactly the same as in the example was employed.

Next, the fixing member (7
Using 1), fixed and installed in exactly the same manner as in Example 1,
The waterproofing sheet (6) was melt-bonded to complete the laying operation.
In addition, the fusion bonding method was attempted in three states in the same manner as in Example 1.

The fixing member (7)
The bonding state between 1) and the waterproof sheet (6) was evaluated in the same manner as in Example 1, and the results are shown in Table 1.

As is clear from Table 1, the first embodiment of the present invention is shown.
In addition, the fixing member according to Example 2 was good in each evaluation item of the effect on the bonding strength, the surface appearance, and the heat insulating layer under any bonding conditions of the fusion bonding of the waterproof sheet by high frequency. On the other hand, the fixing member according to the comparative example was good only under the condition A, and was acceptable or bad under the conditions B and C.

[0066]

[Table 1]

[0067]

As described above, the fixing member for laying a waterproof sheet according to the first invention of the present invention is a fixing member for laying a waterproof sheet for joining a waterproof sheet made of a thermoplastic resin to a structure to be waterproofed. , Comprising: a member main body made of a thermoplastic resin; and a conductive porous body having a plurality of joining holes penetrating vertically, which are laminated and integrated at a surface portion or an intermediate portion of the member body, and a fixing tool is provided at a central portion. The mounting hole is provided, a spacing pedestal is provided around the mounting hole on the lower surface side, and a reinforcing convex edge protruding downward is provided at the peripheral edge, so that it is used for joining. Lamination integration of the conductive porous body having holes and the main body of the member made of a thermoplastic resin is strong and high in rigidity, and after the fixing member is fixedly installed on the skeleton,
When the waterproof sheet is melt-bonded to the fixing member by a high-frequency heating device, the waterproof sheet in contact with the member body near the conductor layer is quickly heated, and the fusion bonding between the fixing member and the waterproof sheet is quickly and This has the effect of reliably increasing the efficiency of the laying work, and has the effect that almost no heat is transmitted to the front side of the waterproof sheet, and the appearance of the waterproof sheet after laying is improved.

Further, since the lower surface of the fixing member itself is hardly heated, inconveniences such as melting and collapse of the heat insulating layer can be reliably prevented in the heat insulating work. In particular, the heat-softened reinforcing edge supports the member body in a molten state in the vicinity of the conductive porous body, prevents the main body from being separated from the conductive porous body, and comes close to the end of the conductive porous body. This has the effect of preventing the waterproof sheet from being abnormally heated so as not to cause thermal deformation or thermal damage.

Further, the spacing pedestal can prevent deformation due to strong driving of the fixture and deformation due to pressing of the high-frequency heating device at the time of fusion bonding, and can maintain flatness of the fixing member. This has the effect that the waterproof sheet can be firmly melt-bonded, the bonding durability can be increased, and the appearance and appearance can be improved.

A fixing member for laying a waterproof sheet according to the second invention of the present invention is a fixing member for laying a waterproof sheet for joining a waterproof sheet made of a thermoplastic resin to a structure to be waterproofed. And a conductive porous body having a plurality of joining holes penetrating vertically, which are laminated and integrated on the surface or intermediate portion of the member body, and a fixing hole is provided in the center. With
Since the upper surface is formed in a loose spherical shape, the lamination and integration of the conductive porous body having the bonding holes and the member body made of a thermoplastic resin is strong, the rigidity is high, and the fixing member is used as a body. When the waterproof sheet is fusion-bonded to the fixing member by the high-frequency heating device after the fixing installation, the fusion bonding between the fixing member and the waterproof sheet is quickly and reliably performed, and the efficiency of the laying work is increased, and the waterproof sheet is further improved. There is an effect that almost no heat is transmitted to the front surface side, and the appearance of the waterproof sheet after laying is improved.

Further, the distance between the conductive porous body and the oscillating surface increases from the contact point when the oscillating surface of the high-frequency heating device is in contact with the oscillating surface via the waterproof sheet.
Accordingly, the heat generation effect of the conductive porous body is suppressed, so that there is an effect that excessive melting and heating of the member main body can be suppressed at the peripheral edge of the fixing member. Further, even when the oscillation surface is contacted with a slight inclination via the waterproof sheet, the relationship between the spherical surface and the contact surface is maintained and the same operation as described above is performed. Since there is no risk of thermal deformation of the laying, there is an effect that the laying operation by high frequency can be performed more easily and reliably.

Furthermore, in the waterproofing sheet laying fixing member according to the second aspect of the present invention, the spacing pedestal is provided on the lower surface side and around the mounting hole. The deformation can be effectively prevented even when the tool is abnormally driven, and the deformation of the fixing member due to the pressing of the high-frequency heating device can be reliably prevented during the fusion bonding with the waterproof sheet. There is an advantage.

Further, in the waterproofing sheet laying fixing member according to the second aspect of the present invention, as described in claim 4, a plurality of reinforcing beams extending radially from the vicinity of the mounting hole on the lower surface side. Since it is provided, even if the oscillating surface at the time of fusion bonding is inclined and abutted through the waterproof sheet, the deformation of the upper surface of the fixing member due to pressing can be prevented, the curved shape can be maintained, and the melting of the waterproof sheet can be maintained. There is an advantage that joining can be performed smoothly.

Further, in the fixing member for laying a waterproof sheet according to the present invention, a convex curved edge portion having a radius of curvature of 0.5 mm or more is formed on the upper surface side of the peripheral edge portion. Therefore, even if the oscillation surface of the high-frequency heating device is abutted at the peripheral edge, the peripheral edge is not abnormally heated, and there is an advantage that local thermal deformation does not occur. Therefore, even if the oscillation surface of the high-frequency heating device is pressed while being greatly displaced from the center during the fusion bonding, there is an advantage that the waterproof sheet can be more effectively prevented from being abnormally heated and thermally deformed.

[Brief description of the drawings]

FIG. 1 is a sectional perspective view showing a first invention of the present invention.

FIG. 2 is a partial cross-sectional view showing a lamination mode of a member main body and a conductor layer of the fixing member of the present invention, and FIGS.
Indicates different lamination modes.

FIG. 3 is a longitudinal sectional view showing a fusion bonding state of the fixing member and the waterproof sheet according to the first invention of the present invention.

FIG. 4 is a sectional perspective view showing a basic embodiment of the second invention of the present invention.

FIG. 5 is a longitudinal sectional view showing a fusion bonding state of a fixing member and a waterproof sheet according to the second invention of the present invention.

6 is a drawing showing another embodiment of the second invention of the present invention, FIG. 6 (a) is a sectional view taken along line AA of FIG. 6 (b),
FIG. 6B is a rear view.

7 is a drawing showing another embodiment of the second invention of the present invention, FIG. 7 (a) is a sectional view taken along the line BB of FIG. 7 (b), and FIG. It is.

FIG. 8 is a longitudinal sectional view showing a modified embodiment of the first invention and the second invention of the present invention.
8A shows the first invention, and FIG. 8B shows the second invention.

FIG. 9 is a longitudinal sectional view showing a conventional fixing member.

FIG. 10 is a longitudinal sectional view showing another conventional fixing member.

FIG. 11 is a longitudinal sectional view showing a fixing member proposed earlier.

FIG. 12 is a longitudinal sectional view showing a use mode of the fixing member of FIGS. 9, 10 and 11, and FIGS.
The usage modes of FIGS. 9 to 11 are shown.

FIG. 13 is a conceptual diagram showing a high-frequency oscillation pattern from a high-frequency heating device.

FIG. 14 is a longitudinal sectional view showing a state of the fixing member when the relative positional relationship between the high-frequency heating device and the fixing member is abnormal.

[Explanation of symbols]

 1, 11: fixing member for laying waterproof sheet 1a, 11a: pedestal for spacing 1b, 11b: convex edge for reinforcement 11c: beam for reinforcement 1d, 11d: convex curved edge 1e, 11e: peripheral edge 2, 12 … Member body 3, 13… Conductive porous body 4, 14… Mounting hole 5… Fixing tool 6… Waterproof sheet 7… Body 8… Heat insulation layer 9… High frequency heating device 9 h… Oscillation surface A… Structure

Claims (5)

[Claims] 1. A fixing member for laying a waterproof sheet for joining a waterproof sheet made of a thermoplastic resin to a structure to be waterproof, comprising: a jig body made of a thermoplastic resin; and a surface portion or an intermediate portion of the jig body. And a conductive porous body having a plurality of joining holes penetrating vertically, which are laminated and integrated in the portion, and a mounting hole for a fixture is provided in the center portion, and around the mounting hole on the lower surface side. Is a fixing member for laying a waterproof sheet, characterized in that a pedestal for spacing is provided, and a protruding edge for reinforcement projecting downward is provided at a peripheral edge. 2. A fixing member for laying a waterproof sheet for joining a waterproof sheet made of a thermoplastic resin to a structure to be waterproof, comprising: a jig body made of a thermoplastic resin; and a surface portion or an intermediate portion of the jig body. It is composed of a conductive porous body having a plurality of joining holes penetrating vertically integrated into the part, and is provided with a mounting hole for a fixture in the center part, and the upper surface is formed in a loose spherical shape. A fixing member for laying a waterproof sheet. 3. A lower surface side of the laying fixing member,
The fixing member for laying a waterproof sheet according to claim 2, wherein a spacing pedestal is provided around the mounting hole. 4. The underside of the laying fixing member,
The fixing member for laying a waterproof sheet according to claim 2 or 3, wherein a plurality of reinforcing beams extending radially from the vicinity of the mounting hole are provided. 5. A convex curved edge having a radius of curvature of 0.5 mm or more is formed on an upper surface side of a peripheral edge of the laying fixing member. A fixing member for laying a waterproof sheet.