JP2017122330A - Waterproof sheet fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent dew condensation water occurring between a waterproof sheet and a waterproof substrate from being left accumulated and to prevent degradation and adhesion of materials due to dew condensation water.SOLUTION: In a waterproof sheet fixture, a mounting member D2 comprises a cylindrical body part 20 into which a fixture 2 is inserted, a flange-like part 21 installed in the top edge of the body part 20 and formed in a larger diameter than the outer diameter of the body part 20, and a spot facing part 22 installed in the bottom edge inside the body part 20 and to which a head of the fixture 2 can be locked. In a plate-like member D1, an insertion hole 3 which is formed in a larger diameter than the outer diameter of the body part 20 and in a smaller diameter than the outer diameter of the flange-like part 21 and through which the body part 20 is inserted, is provided on the inner peripheral side than an adhesion part 4. In the plate-like member D1, a recess part 6 which is recessed on the side of a waterproof substrate R1 and in which the flange-like part 21 is housed is provided around the insertion hole 3. A plurality of projections 8 projecting on the side opposite to the waterproof substrate R1 are provided on the top face of the recess part 6, and the lower surface of the flange-like part 21 comes into contact with the top face of the plurality of projections 8.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a waterproof sheet fixture for fixing a waterproof sheet to a waterproof base, for example, when laying the waterproof sheet on a heat insulating layer provided along the surface of the waterproof base.

  Conventionally, this type of waterproof sheet fixture includes a disk-shaped plate member having an insertion hole formed in the center, and a cylindrical mounting member that can be inserted through the insertion hole of the plate member. (For example, see Patent Document 1).

The plate-like member is provided with an adhesive portion to which the lower surface of the waterproof sheet is bonded on the upper surface portion, and a recessed portion that accommodates a hook-like portion extending around the entire upper edge of the mounting member around the insertion hole. Is provided.
In addition, the mounting member is provided with the above-described hook-shaped portion at the upper edge portion of the cylindrical main body portion, and the head of a screw (corresponding to a fastener) can be locked at the lower end inside the cylinder of the main body portion. A countersink is provided.

  In order to attach the waterproof sheet fixture to a waterproof base (for example, a folded plate on a folded-plate roof), a plate-like member is placed at a predetermined position on a heat insulating panel (corresponding to a heat insulating layer) provided on the waterproof base. The mounting member is inserted into the insertion hole of the plate-like member from the lower end portion, penetrates into the heat insulating panel, and the screw is inserted into the inner space of the mounting member and tightened to the waterproof base.

  That is, by tightening the screw, the mounting member comes close to the waterproof base side, and the hook-shaped portion of the mounting member and the recessed portion of the plate-shaped member overlap vertically over the entire circumference, so that the plate-shaped member does not float up The position can be fixed.

  And a waterproof sheet can be fixed to a waterproof base by arranging a waterproof sheet on each waterproof sheet fixing tool attached to a waterproof base, and adhering to the adhesion part of a tabular member.

Further, the plate-like member and the attachment member are allowed to rotate relative to each other around the vertical axis center in a state where the recessed portion and the hook-like portion are in contact with each other in the vertical direction. Thereby, it is possible to prevent the mounting member and the screws fixing the waterproof member from being provided and loosened by the rotational force acting on the plate-like member.
Incidentally, the rotation of the plate-like member occurs, for example, when a lift due to wind is applied to the waterproof sheet and the influence is transmitted from the waterproof sheet to the plate-like member.

Japanese Patent Laid-Open No. 6-136892 (FIG. 1)

  In a state where the waterproof sheet is fixed on the waterproof base using the waterproof sheet fixing tool, the range sandwiched between the waterproof sheet and the waterproof base is a sealed environment. Therefore, in a sealed environment, condensation is likely to occur due to the difference in the outside air temperature between day and night.

According to the above-described conventional waterproof sheet fixture, the plate-like member and the mounting member are in contact with each other at the recessed portion and the hook-like portion over the entire circumference, so that dew condensation water is generated between the contact surfaces by capillary action. It is easy to pull in.
Further, once the dew condensation water that has entered between the contact surfaces is difficult to be released into the space, it cannot evaporate and may continue to exist for a long time. Accordingly, there is a problem that the water intervened for a long time promotes chemical changes and the like between the recessed portion and the bowl-shaped portion, and causes deterioration of the material, or the contact surfaces adhere to each other and obstruct relative rotation. .

  Therefore, the object of the present invention is to fix the tarpaulin that solves the above-mentioned problems, and that the condensed water generated between the waterproof sheet and the waterproof base is unlikely to remain, and the material is not easily deteriorated or adhered by the condensed water. There is a tool to provide.

  A feature of the present invention is that a bonding portion to which a waterproof sheet is fixed is provided on the upper surface, and is made of a metal plate member placed on a heat insulating layer laid on a waterproof base, and relatively rotatable with respect to the plate member. And a resin-made mounting member that is fitted into the heat-insulating layer in a contact state and is fixed to the waterproof base by a fastener, and the cylindrical main body portion through which the fastener is inserted. And a hook-shaped part provided at the upper end of the main body part and having a larger diameter than the outer diameter of the main body part, and provided at the inner lower end of the main body part, the head of the fastener can be locked A countersink portion, and is formed on the inner peripheral side of the adhesive portion of the plate-like member so as to have a larger diameter than the outer diameter of the main body portion and a smaller diameter than the outer diameter of the bowl-shaped portion. An insertion hole through which the main body passes, and around the insertion hole in the plate-like member, A plurality of protrusions protruding on the opposite side of the waterproof base are provided on the upper surface of the recess, the plurality of protrusions being recessed on the base side and receiving the bowl-shaped portion; The lower surface of the hook-shaped portion is in contact with the upper surface of the portion.

  According to the present invention, the upper surface of the recessed portion is provided with a plurality of protrusions that protrude to the opposite side of the waterproof base, and the lower surface of the hook-shaped portion abuts on the upper surfaces of the plurality of protrusions. In the meantime, an open space communicating with the surroundings can be secured.

Therefore, even if condensed water enters between the recessed portion and the bowl-shaped portion, it is easy to escape to the open side, transpiration is promoted, and it is possible to prevent the condensed water from continuing to exist for a long time.
As a result, the condensed water is unlikely to remain between the contact surfaces of the recessed portion and the bowl-shaped portion, and the deterioration of the material of the recessed portion and the bowl-shaped portion due to the condensed water, the relative rotation obstacle due to adhesion, etc. Can be prevented.

  Moreover, by providing the recessed portion with the protruding portion, the section modulus of the recessed portion is increased, and the strength of the member as the recessed portion can be improved. As a result, high fixing strength can be exhibited as a waterproof sheet fixture.

  In the present invention, it is preferable that the plurality of protruding portions are provided in a state of extending radially from the inner peripheral portion of the recessed portion and in a state of being spaced apart in the circumferential direction of the recessed portion.

According to this configuration, since the protruding portions are reinforcing ribs that extend radially from the inner peripheral portion of the recessed portion, the bending rigidity in the radial direction (radial direction) at the recessed portion can be improved.
Moreover, since each protrusion part is provided in the state which left the space | interval in the circumferential direction of the recessed part, the space which can be formed between each protrusion part can also be formed in the state extended radially from the inner peripheral part of a recessed part. Therefore, both ends (or any one end) in the direction in which the space extends can be opened to further improve water drainage.

  In the present invention, it is preferable that a flat surface continuous in the circumferential direction in the state along the insertion hole is provided on the inner peripheral side of the plurality of protrusions in the recessed portion.

  According to this configuration, the flat surface is continuous in the circumferential direction on the inner peripheral side from the protrusion, so that a ring-shaped structure can be formed, and the protrusions can be integrally connected to each other by the flat surface. The bending rigidity in the circumferential direction in the recessed portion can be improved. Therefore, it is possible to prevent the plate-like member from being bent with the protruding portion as a fold.

  In the present invention, an annular rib portion bulging from the recessed portion to the side opposite to the waterproof base is provided at a position adjacent to the outer peripheral side of the recessed portion of the plate-shaped member, It is preferable that the outer peripheral side end portion is continuous with the rib portion.

According to this structure, both the improvement of the bending rigidity along the circumferential direction of the plate-like member by the annular rib portion and the improvement of the bending rigidity in the radial direction by the protruding portion can be provided.
Furthermore, since the protruding portion and the rib portion are continuous, the bending rigidity of each other can be synergistically complemented, and a waterproof sheet fixture having high strength can be provided.

  In the present invention, the outer peripheral portion of the main body portion is provided with a retaining protrusion that projects radially outward, and the projecting length of the retaining protrusion is determined by the difference between the outer diameter of the insertion hole and the outer diameter of the main body portion. In other words, it is preferable that the retaining protrusion is over the insertion hole by press fitting.

According to this configuration, the plate-like member and the attachment member are fitted together and press-fitted so that the retaining protrusion gets over the inner edge of the insertion hole, so that the members can be integrated so as not to be separated.
Therefore, when the member is handled, the plate-like member and the mounting member are not handled individually, but can be handled together, thereby improving the handleability. As a result, when attaching the waterproof sheet fixture to the waterproof base, the work can be efficiently performed.

It is a partially cutaway perspective view showing the installation situation of a waterproof sheet fixture in a roof. It is a disassembled perspective view of a waterproof sheet fixing tool. It is a perspective view which shows the integrated waterproof sheet fixing tool. It is a top view of a plate-shaped member. It is principal part sectional drawing which shows the installation condition of the waterproof sheet fixing tool in a roof. It is principal part sectional drawing which shows the fitting condition of a plate-shaped member and an attachment member. It is a top view of the plate-shaped member of another embodiment. It is sectional drawing which shows the principal part of the plate-shaped member of another embodiment.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 shows a situation where a waterproof sheet 1 is installed on the surface of a roof R using an embodiment of the waterproof sheet fixture of the present invention (hereinafter simply referred to as a sheet fixture D).

The roof R is configured by spreading a heat insulating plate (corresponding to a heat insulating layer) R2 on the surface side of a roof base (an example of a waterproof base) R1.
In the embodiment, the roof base R1 is configured by a metal roof (folded plate roof) in which metal folded plates are arranged side by side.
The roof base R1 itself is not limited to the folded-plate roof, and is, for example, a base made of metal such as a deck plate or a keystone plate, or a base using a reinforced concrete structure or a concrete plate. Also good.

  The heat insulating plate R2 is made of urethane foam (others may be foam molded products such as polystyrene, polypropylene, polyethylene, etc., and the hardness can be freely set), and the fixing to the roof base R1 is performed by the sheet fixing tool D. Yes.

  The waterproof sheet 1 is made of a synthetic resin sheet such as vinyl chloride.

  As shown in FIGS. 2 to 5, the sheet fixing tool D is a disk-like plate-like member D <b> 1 and a cylinder that can be inserted into the plate-like member D <b> 1 and is fixed to the roof base R <b> 1 by a screw (an example of a fastener) 2. Shaped mounting member D2.

The plate-like member D1 is formed by pressing a metal plate, and an insertion hole 3 through which the attachment member D2 can be inserted is provided in the central portion of the disk, and the outer peripheral portion of the insertion hole 3 is upward. The adhesive part 4 to which the waterproof sheet 1 is fixed is provided in the upper surface part.
Incidentally, the insertion hole 3 is formed to have a larger diameter than an outer diameter of a main body portion 20 (described later) of the mounting member D2 and a smaller diameter than an outer diameter of a flange-shaped portion 21 (described later) of the mounting member D2. It is formed so that the part 20 can penetrate.

  Incidentally, the adhesion part 4 is comprised with the hot-melt-adhesive material in the said embodiment. Therefore, if the waterproof sheet 1 is laid on the installed sheet fixture D, and the plate member D1 that is a metal is heated by electromagnetic induction heating, the bonding portion 4 (hot melt adhesive) is melted. The waterproof sheet 1 can be adhered to the sheet fixture D.

  Moreover, the outermost edge part of the plate-shaped member D1 is located in the lower stage from the adhesion part 4, and is comprised as the cyclic | annular grounding part 5 which can contact | abut on the upper surface of heat insulation board R2.

  Around the insertion hole 3 in the plate-like member D1, a recessed portion 6 is formed that is recessed on the roof base R1 side over the entire circumference, and the roof is formed between the recessed portion 6 and the adhesive portion 4 from the recessed portion 6. An annular rib portion 7 swelled on the opposite side to the base R1 is formed.

The recessed portion 6 is provided with a plurality of protruding portions 8 that bulge to the opposite side of the roof base R1.
The projecting portions 8 are provided in a state of extending radially from the inner peripheral portion of the recessed portion 6 and in a state of being spaced apart in the circumferential direction of the recessed portion 6.

Further, the inner peripheral side end portion 8 a of the protruding portion 8 is located slightly on the outer peripheral side from the inner edge portion of the recessed portion 6. Accordingly, a portion on the inner peripheral side with respect to the protruding portion 8 is configured as a flat surface 6 a continuous in the circumferential direction of the insertion hole 3, and is located on the same plane as the other recessed portions 6.
Further, the outer peripheral side end portion 8 b of the protruding portion 8 is continuous with the rib portion 7 in an intersecting state.

  As the attachment member D <b> 2 is inserted through the insertion hole 3, the hook-shaped portion 21 provided at the upper end is housed in the recessed portion 6. In this stored state, the lower surface of the bowl-shaped portion 21 is in contact with the upper surface of each protruding portion 8. Accordingly, a space V corresponding to the height of the protruding portion 8 is formed between the adjacent protruding portions 8 between the recessed portion 6 and the bowl-shaped portion 21.

This space V is also formed in a state of extending radially from the inner peripheral portion of the recessed portion 6 and spaced in the circumferential direction of the recessed portion 6, similarly to the protruding portion 8. As shown in FIG. 6, the space V is released at both ends in the extending direction.
Therefore, even if the water condensed in the range between the waterproof sheet 1 and the roof base R1 enters the space V, it is easily removed because it is released as described above.

As shown in FIG. 5, the attachment member D <b> 2 is formed of a cylindrical main body 20 through which the screw 2 is inserted and an upper end of the main body 20. Also, a bowl-shaped portion 21 having a large diameter, and a counterbore portion 22 provided at the inner lower end of the main body portion 20 and capable of locking the head of the screw 2 are provided.
The attachment member D2 is relatively rotatable about the longitudinal axis and the plate member D1 in a set state where the attachment member D2 is inserted through the insertion hole 3 of the plate member D1.

The main body portion 20 is formed in an outer shape with a narrowed lower end portion, and is configured to easily enter the heat insulating plate R2.
In addition, a plurality of retaining protrusions 20 a that protrude radially outward are provided on the outer peripheral portion of the main body portion 20 on the side of the flange-shaped portion 21 at intervals in the circumferential direction.
The protrusion length L of the retaining projection 20a is set to a length that can prevent the retaining projection 20a. In this embodiment, the radius of the insertion hole 3 (an example of the outer diameter) L1 and the radius of the main body 20 (the outer diameter of the outer diameter). Example) It is set larger than the difference from L2 (see FIG. 6).
Accordingly, in the combined state of the plate-like member D1 and the mounting member D2, the retaining protrusion 20a gets over the insertion hole 3 by press fitting.

Next, an example of the installation procedure of the sheet fixture D will be described.
[1] The plate-like member D1 and the attachment member D2 are combined in advance (see FIG. 3).
However, the mounting member D2 may be combined while being inserted into the heat insulating plate R2 while the plate member D1 is placed on the heat insulating plate R2.

[2] The seat fixture D is installed at a predetermined plane position of the roof R. In installation, the lower end portion of the mounting member D2 is pierced into the heat insulating plate R2, and the screw 2 inserted into the inner space of the mounting member D2 is screwed.
However, a hole for inserting the mounting member D2 may be formed in advance in the corresponding portion of the heat insulating plate R2.

[3] The degree of screwing of the screw 2 is performed until the plate-like member D1 can rotate about the longitudinal axis and the hook-like portion 21 is accommodated in the recessed portion 6.
The sheet fixing tool D can be installed in the above-described process. After the sheet fixing tool D is installed in other places, the waterproof sheet 1 is put on them and bonded to the bonding portion 4 to fix the waterproof sheet 1. Complete.

According to the sheet fixture D described in the embodiment, the above-described space V can be secured between the bowl-shaped part 21 and the recessed part 6 in a state of being installed on the roof R. It is difficult to accumulate between the recess 21 and the recessed portion 6, and chemical change, deterioration, adhesion, and the like of the material can be prevented. Therefore, durability can be improved and a structure in which the plate-like member D1 and the mounting member D2 can be relatively rotated over a long period of time can be maintained.
In addition, by devising how to provide the protruding portions, the strength of the plate-like member D1 can be increased, and the sheet fixture D having a high fixing strength of the waterproof sheet 1 can be provided.

[Another Example]
Another embodiment will be described below.
<1> The waterproof base R1 is not limited to the roof base described in the previous embodiment. For example, the waterproof base R1 may be a sloped roof or a wall, and the structure thereof may be, for example, wooden or reinforced concrete. Further, there is no particular limitation such as a steel frame, a folded plate, or a deck plate.

<2> The waterproof sheet 1 is not limited to the vinyl chloride synthetic resin sheet material described in the previous embodiment, and may be one using other known materials.

<3> The bonding portion 4 is not limited to being configured with the hot melt adhesive described in the previous embodiment, and may be configured with another known adhesive.
Moreover, the position of the adhesion part 4 in the plate-shaped member D1 is not restricted to what was demonstrated by previous embodiment.

<4> The protrusion 8 is not limited to the shape, quantity, and arrangement described in the previous embodiment, and can be changed as appropriate.
For example, as shown in FIG. 7, the protruding portion 8 may extend in the circumferential direction of the recessed portion 6 instead of the radially extending portion from the inner peripheral portion of the recessed portion 6. In this case, as shown in the figure, it is preferable to provide the protruding portions 8 with an interval in the circumferential direction of the recessed portion 6 from the viewpoint of improving water drainage.
As another form, the protrusion 8 may be a protrusion arranged in a dot shape in the recessed portion 6.

Further, in forming the protruding portion 8, as described in the previous embodiment, it is not limited to forming the target portion of the metal plate constituting the plate-like member D1, but for example, as shown in FIG. In this manner, the protruding portion 8 may be formed by integrating another member with the plate-like member D1.
In the illustrated form, for example, the protruding portion 8 is formed by piling up solder or the like.

  Further, the portion adjacent to the inner peripheral side end portion 8a of the protruding portion 8 is not limited to being configured as the flat surface 6a described in the previous embodiment, and the flat surface 6a is not provided. Also good.

  In the claims, reference numerals are used for convenience of comparison with the drawings. However, the present invention is not limited to the configurations of the accompanying drawings.

  The waterproof sheet fixture can also be installed on a waterproof base other than the roof.

1 Waterproof sheet 2 Screw (an example of a fastener)
DESCRIPTION OF SYMBOLS 3 Insertion hole 4 Adhesion part 6 Recessed part 6a Flat surface 7 Rib part 8 Protrusion part 8b Outer peripheral side end 20 Main body part 20a Retaining protrusion 21 Gutter part 22 Countersink part D1 Plate member D2 Mounting member L Protrusion length L1 Insertion hole 3 radius (an example of outer diameter)
L2 Radius of body 20 (an example of outer diameter)
R1 Roof base (an example of waterproof base)
R2 heat insulation plate (equivalent to heat insulation layer)

Claims (5)

An adhesive part to which the waterproof sheet is fixed is provided on the upper surface, and a metal plate-like member placed on the heat insulating layer laid on the waterproof base,
A resin mounting member that is fitted into the heat insulating layer in a state in which the plate member is in a relatively rotatable manner, and is fixed to the waterproof base by a fastener, and
A cylindrical main body portion through which the fastener is inserted into the attachment member, a hook-shaped portion provided at an upper end of the main body portion and having a larger diameter than an outer diameter of the main body portion, and the main body portion A countersink portion provided at an inner lower end of the fastener and capable of locking a head portion of the fastener.
An insertion hole formed on the inner peripheral side of the adhesive portion of the plate-like member so as to have a diameter larger than the outer diameter of the main body portion and smaller than the outer diameter of the flange-shaped portion, and through which the main body portion passes. Is provided,
Around the insertion hole in the plate-like member, it is recessed on the waterproof base side, and is provided with a recessed portion that accommodates the flange-shaped portion,
A plurality of protrusions protruding on the opposite side of the waterproof base are provided on the upper surface of the recessed portion,
A waterproof sheet fixture in which the lower surface of the hook-shaped portion is in contact with the upper surfaces of the plurality of protruding portions.   The waterproof sheet fixing tool according to claim 1, wherein the plurality of projecting portions are provided in a state of extending radially from an inner peripheral portion of the recessed portion and spaced from each other in a circumferential direction of the recessed portion.   The waterproof sheet fixture according to claim 2, wherein a flat surface that is continuous in the circumferential direction in a state along the insertion hole is provided on an inner peripheral side of the plurality of protruding portions in the recessed portion. An annular rib portion bulging from the recessed portion to the opposite side of the waterproof base is provided at a position adjacent to the outer peripheral side of the recessed portion of the plate-shaped member,
The waterproof sheet fixture according to claim 2 or 3, wherein an outer peripheral side end portion of the protruding portion is continuous with the rib portion. The outer peripheral portion of the main body is provided with a retaining protrusion that protrudes radially outward,
The protrusion length of the retaining protrusion is larger than the difference between the outer diameter of the insertion hole and the outer diameter of the main body portion,
The sheet fixing tool according to any one of claims 1 to 4, wherein the retaining protrusion is over the insertion hole by press fitting.

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