JP6544954B2

JP6544954B2 - Tarpaulin fastener

Info

Publication number: JP6544954B2
Application number: JP2015046096A
Authority: JP
Inventors: 裕之大西; 野元　裕正; 裕正野元
Original assignee: アーキヤマデ株式会社
Priority date: 2015-03-09
Filing date: 2015-03-09
Publication date: 2019-07-17
Anticipated expiration: 2035-03-09
Also published as: JP2016166462A

Description

防水下地への防水シートの固定方法としては、防水シートを全面接着する方法に限るものではなく、他の方法の一つとしては、間隔をあけた複数箇所に固定部を分散させることで、防水下地の伸縮等による悪影響が防水シートに及ぶのを緩和できるようにした方法〔所謂「絶縁工法」（機械的固定方法）〕があり、本発明は、この「絶縁工法」に使用できる防水シート固定具に関するものであり、更に詳しくは、防水下地の上に沿って設けられる防水シートを、前記防水下地に固定する防水シート固定具に関する。 The method of fixing the waterproof sheet to the waterproof base is not limited to the method of bonding the entire surface of the waterproof sheet, and as another method, the waterproof portion is dispersed by dispersing the fixing portion at a plurality of spaced places. There is a method (so-called "insulation method" (mechanical fixing method)) which can mitigate that the adverse effect due to the expansion and contraction of the ground extends to the waterproof sheet. More particularly, the present invention relates to a waterproof sheet fixing device for fixing a waterproof sheet provided along a waterproof substrate to the waterproof substrate.

従来、この種の防水シート固定具としては、図８に示すように、金属薄板素材をプレス成形によって立体的な円板形状に成形して構成してあるものがあった（例えば、特許文献１参照）。 Heretofore, as this type of waterproof sheet fixing tool, as shown in FIG. 8, there has been one in which a thin metal plate material is formed into a three-dimensional disc shape by press forming (for example, Patent Document 1) reference).

この防水シート固定具Ｌは、円板の中央部分２０と外周部分２２とが防水下地１側に位置し、それらの間に位置する平面部分２１は防水下地１から離間する方向に膨出した形状に構成してあり、中央部分２０には、固定ネジ部材３を挿通するネジ挿通孔２０ａが設けられ、平面部分２１は、防水シート２に対する接着面２１ａとして構成され、外周部分２２は、防水下地１に対する接地部２２ａとして構成されている。 The waterproof sheet fixing member L has a shape in which the central portion 20 and the outer peripheral portion 22 of the disc are located on the waterproof base 1 side, and the flat portion 21 located between them bulges in the direction away from the waterproof base 1 The central portion 20 is provided with a screw insertion hole 20a through which the fixing screw member 3 is inserted, the flat portion 21 is configured as an adhesive surface 21a for the waterproof sheet 2, and the outer peripheral portion 22 is a waterproof foundation It is comprised as 1st with respect to the earthing part 22a.

防水シート固定具Ｌの防水下地１への取り付けは、次の要領で行うものである。防水下地１上の所定位置に防水シート固定具Ｌを載置して、接地部２２ａが防水下地１の上面に当接した状態で、引き続き、ネジ挿通孔２０ａに固定ネジ部材３を挿通して、防水下地１に対してねじ込む。この結果、接地部２２ａと中央部分２０とが防水下地１側に押し付けられた状態で固定される。
その後、防水シート２を防水シート固定具Ｌの上に被せて、接着面２１ａにおいて防水シート２を防水シート固定具Ｌに接着することで、防水シート２を防水下地１に固定することができるものである。 The attachment of the waterproof sheet fixture L to the waterproof base 1 is carried out in the following manner. With the waterproof sheet fixing tool L placed at a predetermined position on the waterproof base 1, and with the ground portion 22a in contact with the upper surface of the waterproof base 1, the fixing screw member 3 is continuously inserted into the screw insertion hole 20a. , Screw on the waterproof foundation 1. As a result, the grounding portion 22a and the central portion 20 are fixed in a state of being pressed to the waterproof foundation 1 side.
Thereafter, the waterproof sheet 2 can be fixed to the waterproof base 1 by covering the waterproof sheet 2 on the waterproof sheet fixture L and adhering the waterproof sheet 2 to the waterproof sheet fixture L on the adhesive surface 21 a. It is.

特開２００６−１８３３９４号公報（図１、図２、図５）Unexamined-Japanese-Patent No. 2006-183394 (FIG. 1, FIG. 2, FIG. 5)

上述した従来の防水シート固定具によれば、防水シートの局部を接着して防水下地に固定するものであるから、接着されていない部分に関しては防水下地上で上下に多少の移動が許容されている。
また、防水シートの上面側は、外環境に曝されているから、防水シートの上面近傍部分に沿って風が吹くこともあり、それに伴って、防水シートの上面側に発生する負圧領域の影響で、防水シートに揚力が作用することがある。 According to the conventional waterproof sheet fixing device described above, since the local part of the waterproof sheet is adhered and fixed to the waterproof base, some movement is allowed up and down on the waterproof base with respect to the non-bonded part There is.
In addition, since the upper surface side of the waterproof sheet is exposed to the external environment, wind may blow along the upper surface of the waterproof sheet, and the negative pressure region generated on the upper surface side of the waterproof sheet accordingly. Under the influence, lift may act on the tarpaulin.

このように、防水シートに対して揚力が作用すると、防水シートは、接着されていない部分が上下方向や横方向に移動するバタつき（フラッタリング）を生じ、その動きは、あたかも水面の波のごとく、風上から風下に向かって移動していく。その際、防水シートから防水シート固定具に伝わる力によって、固定ネジ部材には、振動や回転力等が繰り返して作用する虞がある。 As described above, when lifting force acts on the waterproof sheet, the waterproof sheet causes fluttering in which the non-adhered portion moves vertically and laterally, and the movement is as if it were a wave of the water surface. As you move from the windward to the windward. At that time, due to the force transmitted from the waterproof sheet to the waterproof sheet fixing tool, there is a possibility that vibration, rotational force and the like repeatedly act on the fixing screw member.

その結果、防水シート固定具を固定している固定ネジ部材は、上述の振動や回転力の作用によって緩むことがあり、確実な固定状態を維持できなくなる可能性がある。 As a result, the fixing screw member fixing the waterproof sheet fixing member may be loosened due to the above-mentioned action of the vibration and the rotational force, which may make it impossible to maintain a secure fixing state.

この問題点を解消するには、例えば、防水シート固定具のネジ層通孔を、固定ネジ部材の軸部外径より大きめに設定したルーズホールとして形成し、防水シート固定具を、ルーズホールの遊び寸法の範囲内で、固定ネジ部材に対して径方向に移動できたり、固定ネジ部材周りに回転できるように支持することが考えられる。
これによって、防水シートから防水シート固定具に伝わる前記振動や回転力が、固定ネジ部材に伝わり難くなる。 In order to solve this problem, for example, the screw layer through hole of the waterproof sheet fastener is formed as a loose hole set larger than the outer diameter of the shaft portion of the fixing screw member, and the waterproof sheet fastener is a loose hole. It is conceivable to provide support so as to be able to move radially relative to the locking screw or to be able to rotate around the locking screw within the range of the idle dimensions.
By this, the said vibration and rotational force transmitted to a waterproof sheet fixing tool from a waterproof sheet become difficult to be transmitted to a fixing screw member.

しかし、その反面、防水下地に対して防水シート固定具が相対移動できるようになると、防水下地上の多数の防水シート固定具設置箇所の内の複数箇所において、風の影響によって防水シート固定具が変位したままになる事態が生じる。それに伴って、防水シート固定具によって支持されている防水シートは、ある部分では、強く引っ張られた状態になり、別の部分では、弛んだ状態になり、防水シートそのものに対する応力集中や、シワが生じたままになる虞がある。
その結果、防水シートが損傷・劣化し易くなり、耐久性が低下する問題点がある。 However, on the other hand, when the tarpaulin fastener can move relative to the waterproof foundation, the tarpaulin fastener is affected by the wind at a plurality of locations among the many tarpaulin fixture installation locations on the waterproof foundation. A situation occurs in which displacement remains. Along with this, the waterproof sheet supported by the waterproof sheet fixing member is in a strongly pulled state in one part, and in a loose part in another part, causing stress concentration on the waterproof sheet itself, and wrinkles. There is a risk that it will continue to occur.
As a result, the waterproof sheet is likely to be damaged or deteriorated, and there is a problem that the durability is lowered.

従って、本発明の目的は、上記問題点を解消し、風が吹いても固定ネジ部材が緩み難く、より確実な固定状態を維持できながら、防水シートの耐久性の低下防止を図れる防水シート固定具を提供するところにある。 Therefore, it is an object of the present invention to solve the above-mentioned problems, and it is difficult to loosen the fixing screw member even when the wind blows, and it is possible to prevent the decrease in durability of the waterproof sheet while securing a more secure fixing state. To provide tools.

本発明の特徴は、防水下地の上に沿って設けられる防水シートを、前記防水下地に固定する円板状の防水シート固定具であって、前記防水下地に固定自在な第１部材と、前記防水シートに固定自在な第２部材と、前記第１部材に備えた第１係止部と前記第２部材に備えた第２係止部とを係合させることで前記第１部材と前記第２部材とを相対移動自在に連結する連結部と、前記第１部材と前記第２部材との相対位置を初期連結状態に付勢する復帰機構とを備え、前記復帰機構は、前記連結部より外周側に配置してあるところにある。 A feature of the present invention is a disc-like waterproof sheet fixing device for fixing a waterproof sheet provided along the upper surface of the waterproof substrate to the waterproof substrate, the first member being fixable to the waterproof substrate, and The first member and the first member can be engaged by engaging a second member which can be fixed to a waterproof sheet, a first locking portion provided to the first member, and a second locking portion provided to the second member. comprising a coupling portion for relatively movably connecting the two members, and a return mechanism for biasing the relative position between the first member and the second member to an initial coupling state, the return mechanism of the previous SL connecting portion It is located at the outer side.

本発明によれば、連結部によって第１部材と第２部材とは相対移動自在に連結されているから、第１部材を防水下地に固定すると共に、第２部材に防水シートを固定した状態において、防水下地に対して防水シートを移動自在に支持することができる。
従って、風圧等の影響で防水シートから防水シート固定具に伝わる前記振動や回転力を、第１部材と第２部材との相対移動によって緩衝することができ、第１部材を防水下地に固定している例えば固定ネジ部材が緩むのを防止できるようになる。 According to the present invention, since the first member and the second member are relatively movably coupled by the coupling portion, the first member is fixed to the waterproof foundation and the waterproof sheet is fixed to the second member. The waterproof sheet can be movably supported on the waterproof base.
Therefore, the vibration and rotational force transmitted from the waterproof sheet to the waterproof sheet fixing tool under the influence of wind pressure and the like can be buffered by the relative movement between the first member and the second member, and the first member is fixed to the waterproof base. For example, the fixing screw member can be prevented from being loosened.

また、復帰機構を備えているから、防水下地に固定した第１部材に対して、第２部材が移動しても、両者の初期連結状態に戻すように付勢力を作用させることができる。従って、第２部材に固定されている防水シートも、防水下地上に設置した初期設置状態に戻すことができ、防水シート全体として局部に圧縮力や引張力が残ったままになったり、又は、シワがよったままになることを防止できるようになる。
その結果、風が吹いても、防水シートを防水下地に確実な固定状態を維持した状態に固定でき、且つ、防水シートの耐久性の低下を防止できるようになる。 Further, since the return mechanism is provided, the biasing force can be applied to the first member fixed to the waterproof base so as to return to the initial connection state of both members even if the second member moves. Therefore, the waterproof sheet fixed to the second member can also be returned to the initial installation state installed on the waterproof base, and the compressive force and the tensile force remain at the local portion as the whole waterproof sheet, or It will be possible to prevent the wrinkles from being left behind.
As a result, even when the wind blows, the waterproof sheet can be fixed to the waterproof base in a state of being securely fixed, and the reduction in the durability of the waterproof sheet can be prevented.

また、当該防水シート固定具は、防水下地と防水シートとの間に設置される関係上、防水シートの表面に大きな段差を作らないように厚み寸法は小さい方が好ましい。一方、復帰機構は、第１部材と第２部材とを初期連結状態に復帰させるには、大きな付勢力を発揮できるに越したことはなく、その為には、復帰機構に使用する部材断面積を十分に確保することが好ましい。しかし、復帰機構の部材断面積を増加させれば、防水シート固定具の厚み寸法も増加し易い虞がある。本発明によれば、これら相反する必要条件を両方とも満たすことが可能となる。 Moreover, since the said waterproof sheet fixing tool is installed between a waterproof foundation and a waterproof sheet, it is preferable that the thickness dimension be small so as not to make a large step on the surface of the waterproof sheet. On the other hand, in order to return the first member and the second member to the initial connection state, the return mechanism is able to exert a large biasing force, and therefore, the cross-sectional area of members used for the return mechanism Is preferably sufficient. However, if the cross-sectional area of the member of the return mechanism is increased, the thickness dimension of the waterproof sheet fastener may be likely to increase. The invention makes it possible to fulfill both of these contradictory requirements.

即ち、復帰機構は、防水下地表面に沿う方向における前記連結部より外周側に配置してあることで、複雑な構造となり易い連結部を避けて、空間の確保し易い個所に復帰機構を位置させることができるようになる。
従って、例えば、復帰機構を構成する部材の断面積を大きくして第１部材と第２部材との相対位置を初期連結状態に復帰させる復帰性能を高めることができながら、防水シート固定具の全体厚みは薄く保つことが可能となる。 That is, the return mechanism is disposed on the outer peripheral side of the connection portion in the direction along the waterproof base surface, thereby avoiding the connection portion which tends to be a complicated structure and positioning the return mechanism at a location where space is easy to secure. Will be able to
Therefore, for example, the entire waterproof sheet fixing tool can be improved while the cross-sectional area of the members constituting the return mechanism can be increased to improve the return performance of returning the relative position between the first member and the second member to the initial connected state. The thickness can be kept thin.

また、第１部材と第２部材とに復帰機構を取り付ける際にも、前記連結部より外周側の広い空間で取付作業を実施できるから、組立作業効率の向上を図れるようになる。 In addition, even when the return mechanism is attached to the first member and the second member, the attachment operation can be performed in a space wider on the outer peripheral side than the connection portion, so that the assembly operation efficiency can be improved.

尚、上述の第１部材と第２部材との相対移動とは、例えば、防水下地表面に沿う方向における第１部材と第２部材との相対移動や、防水下地表面の垂線周りにおける第１部材と第２部材との相対回転や、防水下地表面の垂線に沿う方向における第１部材と第２部材との相対移動等、それらの内の少なくとも一種類の相対移動を意味する。 The relative movement between the first member and the second member described above may be, for example, the relative movement between the first member and the second member in the direction along the waterproof base surface, or the first member around the vertical line of the waterproof base surface. At least one kind of relative movement among them, such as relative rotation between the second member and the second member, relative movement between the first member and the second member in the direction along the perpendicular to the surface of the waterproof foundation, is meant.

本発明においては、前記第２部材は、平面視での中央部側を前記連結部で連結され、その外周側に、前記防水下地表面の垂線方向に膨出させた膨出部を備え、前記膨出部の上面に前記防水シートとの接着部を備え、前記膨出部の下方空間に前記復帰機構を備えていると好適である。 In the present invention, the second member has a central portion side in plan view connected by the connecting portion, and an outer peripheral side thereof is provided with a bulging portion bulging in the direction perpendicular to the surface of the waterproof base, It is preferable that the upper surface of the bulging portion is provided with an adhesive portion with the waterproof sheet, and the space below the bulging portion be provided with the return mechanism.

本構成によれば、膨出部の上面に接着部を備えてあるから、当該防水シート固定具の上に配置した防水シートとの密着性がよく、例えば、防水シートを上から押えて第２部材に接着させるような場合に、より確実に一体化することができる。
また、膨出部の下方空間を有効に利用して復帰機構を納めることができ、薄型設計が可能となる。 According to this configuration, since the adhesive portion is provided on the upper surface of the bulging portion, the adhesiveness with the waterproof sheet disposed on the waterproof sheet fixing member is good. For example, the waterproof sheet is pressed from above and the second In the case of bonding to a member, it can be integrated more reliably.
Further, the return mechanism can be accommodated by effectively utilizing the space below the bulging portion, and a thin design is possible.

本発明においては、前記復帰機構は、前記膨出部の下面と前記第１部材とにわたって設けられたバネ部材であると好適である。 In the present invention, preferably, the return mechanism is a spring member provided across the lower surface of the bulging portion and the first member.

本構成によれば、複雑な機構を使用せずに、構造の簡単なバネ部材（例えば、板バネやコイルばね等）で復帰機構を構成でき、製作費や、材料コストを抑えて、防水シート固定具としての経済性を向上させることができる。 According to this configuration, the return mechanism can be configured by a simple spring member (for example, a leaf spring, a coil spring, etc.) without using a complicated mechanism, and the production cost and the material cost can be suppressed, and the waterproof sheet It is possible to improve the economy as a fixing tool.

本発明においては、前記復帰機構は、板面を前記防水下地表面の垂線方向に向けた状態で、周方向に沿う環状に形成された板バネで構成してあると好適である。 In the present invention, preferably, the return mechanism is constituted by a leaf spring formed in an annular shape along the circumferential direction, with the plate surface directed in the direction perpendicular to the surface of the waterproof base.

本構成によれば、環状にした板バネ全体の厚み寸法は大きくしなくても、板バネの幅寸法の大小によって断面積を調整でき、バネ剛性の大小を広範囲に調整することが可能となる。
従って、防水シート固定具そのものの厚みを大きくしなくても、復帰機構の性能を、目的の復帰力を発揮できるように構成することができる。 According to this configuration, the cross-sectional area can be adjusted by the size of the width dimension of the leaf spring without increasing the thickness size of the entire annular leaf spring, and the size of the spring rigidity can be adjusted over a wide range .
Therefore, the performance of the return mechanism can be configured to be able to exert the intended return force without increasing the thickness of the waterproof sheet fastener itself.

防水シート固定具の設置状況を示す一部切欠斜視図である。It is a partially cutaway perspective view which shows the installation condition of a waterproofing sheet fixing tool. 防水シート固定具の設置状況を示す断面図である。It is sectional drawing which shows the installation condition of a waterproof sheet fixing tool. 防水シート固定具を示す分解斜視図である。It is a disassembled perspective view which shows a waterproof sheet fixing tool. 防水シート固定具の作用状況を示す断面図である。It is sectional drawing which shows the action condition of a waterproof sheet fixing tool. 別実施形態の防水シート固定具の設置状況を示す断面図である。It is sectional drawing which shows the installation condition of the waterproofing sheet fixing tool of another embodiment. 別実施形態の防水シート固定具の設置状況を示す断面図である。It is sectional drawing which shows the installation condition of the waterproofing sheet fixing tool of another embodiment. 別実施形態の防水シート固定具を示す分解斜視図である。It is a disassembled perspective view which shows the waterproof sheet fixing tool of another embodiment. 従来例の防水シート固定具の設置状況を示す断面図である。It is sectional drawing which shows the installation condition of the waterproof sheet fixing tool of a prior art example.

以下に本発明の実施の形態を図面に基づいて説明する。尚、図面において従来例と同一の符号で表示した部分は、同一又は相当の部分を示している。 Embodiments of the present invention will be described below based on the drawings. In the drawings, the parts denoted by the same reference numerals as the conventional example indicate the same or corresponding parts.

図１は、本発明の防水シート固定具の一つの実施形態品（以後、単にシート固定具という）Ｋを使用して、屋根下地（防水下地の一例）１の上に沿って設けられた防水シート２を固定している状況を示している。 FIG. 1 shows a waterproofing material provided along a roof foundation (one example of a waterproof foundation) 1 using an embodiment of the waterproof sheet fastener of the present invention (hereinafter simply referred to as a sheet fastener) K. It shows the situation in which the seat 2 is fixed.

屋根下地１は、当該実施形態においては、基層は鉄筋コンクリートによって構成され、表層に断熱パネル１ａからなる断熱層が備えられている場合を例に挙げて説明している。
尚、当該シート固定具Ｋの設置対象は、表層に断熱パネル１ａを備えた屋根下地１のみに限るものではない。 In the embodiment, the roof foundation 1 is described by way of an example in which the base layer is made of reinforced concrete and the surface layer is provided with the heat insulating layer made of the heat insulating panel 1a.
In addition, the installation object of the said sheet fixing tool K is not restricted only to the roof base 1 which equipped the surface with the heat insulation panel 1a.

防水シート２は、例えば、塩化ビニル系等の合成樹脂製シートで構成されている。 The waterproof sheet 2 is made of, for example, a vinyl chloride-based synthetic resin sheet.

シート固定具Ｋは、後述する３部材を備えて構成され、主体部分は金属製で、全体外形形状が略円板状になるように形成してある。
また、屋根下地１へのシート固定具Ｋの配置は、横間隔をあけて点在配置としてある。
各シート固定具Ｋは、それぞれ、円形の中央部に挿通させた固定部材３で屋根下地１に固定されている。
また、シート固定具Ｋの上面には、防水シート２の下面が接着してある。 The sheet fixing tool K is configured to include three members described later, the main body portion is made of metal, and the entire outer shape is formed in a substantially disc shape.
Moreover, arrangement | positioning of the sheet | seat fixing tool K to the roof base 1 is set as dotted arrangement at intervals.
Each sheet fixing tool K is fixed to the roof foundation 1 by a fixing member 3 inserted in the center of the circle.
The lower surface of the waterproof sheet 2 is adhered to the upper surface of the sheet fixture K.

固定部材３は、図２に示すように、屋根下地１に螺着させるネジ部材３Ａと、ネジ部材３Ａとシート固定具Ｋとにわたる状態に設けられる筒部材３Ｂとを備えて構成されている。 As shown in FIG. 2, the fixing member 3 is configured to include a screw member 3A screwed to the roof foundation 1 and a cylindrical member 3B provided in a state of being extended across the screw member 3A and the sheet fixing tool K.

筒部材３Ｂは、合成樹脂製の部材で構成してあり、上端部の外周部に鍔状部３Ｂａを備え、筒底部には、筒内空部を挿通させたネジ部材３Ａの拡径頭部３Ａａを受けて支持する座繰り部３Ｂｂが備えてある。
従って、屋根下地１上に載置したシート固定具Ｋの中央部に筒部材３Ｂを挿通させて断熱パネル１ａの厚み内に下降させ、筒部材３Ｂの筒内空部にネジ部材３Ａを挿入して屋根下地１に螺着させることで、鍔状部３Ｂａが、シート固定具Ｋの中央筒部４Ａ（後述）の上に位置し、シート固定具Ｋを抜け止め状態に支持することができる。 The cylindrical member 3B is made of a synthetic resin member, and includes a bowl-shaped portion 3Ba on the outer peripheral portion of the upper end portion, and the enlarged diameter head portion of the screw member 3A through which the in-cylinder empty portion is inserted at the cylindrical bottom. A counterbore 3Bb is provided which receives and supports 3Aa.
Therefore, the cylindrical member 3B is inserted into the central portion of the sheet fixture K placed on the roof foundation 1 and lowered into the thickness of the heat insulating panel 1a, and the screw member 3A is inserted into the in-cylinder space of the cylindrical member 3B. By screwing to the roof foundation 1, the hooked portion 3Ba is positioned on the central cylindrical portion 4A (described later) of the sheet fixing tool K, and the sheet fixing tool K can be supported in a retaining state.

筒部材３Ｂを合成樹脂製の部材で構成することで、シート固定具Ｋの設置箇所における防水シート２の上面側と屋根下地１側との熱伝達（ヒートパス）の抑制を図り、断熱パネル１ａの断熱効果と合わせて建物内の空調効率の低下防止を図ることが可能となっている。 By forming the cylindrical member 3B with a synthetic resin member, heat transfer (heat path) between the upper surface side of the waterproof sheet 2 and the roof base 1 side at the installation location of the sheet fixing tool K is suppressed, and the heat insulating panel 1a is formed. In combination with the heat insulation effect, it is possible to prevent the decrease in the air conditioning efficiency in the building.

シート固定具Ｋは、図２、図３に示すように、屋根下地１に固定自在な第１部材４と、防水シート２に固定自在な第２部材５とを、連結部Ｊを介して相対移動自在に連結すると共に、第１部材４と第２部材との間に板バネ６（復帰機構の一例）を介在させて一体に組み付け、第１部材４と第２部材との相対位置を板バネ６によって初期連結状態に復帰できるようにて構成してある。 As shown in FIG. 2 and FIG. 3, the sheet fixing tool K is a relative member of the first member 4 which can be fixed to the roof foundation 1 and the second member 5 which can be fixed to the waterproof sheet 2 via the connecting portion J. While being movably connected, the plate spring 6 (an example of a return mechanism) is interposed between the first member 4 and the second member and assembled integrally, and the relative position between the first member 4 and the second member is a plate It is configured to be able to return to the initial connection state by the spring 6.

第１部材４は、二つの部材で構成されている。つまり、シート固定具Ｋの平面視での中央部で固定部材３の挿通部を構成する中央筒部材４Ａと、その中央筒部材４Ａの下端部に外嵌する円板状のベース部材４Ｂとを備えて構成してある。 The first member 4 is composed of two members. That is, the central cylindrical member 4A constituting the insertion portion of the fixing member 3 at the central portion in a plan view of the sheet fixing tool K, and the disk-shaped base member 4B externally fitted to the lower end of the central cylindrical member 4A. It is prepared and configured.

中央筒部材４Ａは、上端部で外周側に張り出した鍔状の張出部（第１係止部の一例）７を備え、上下中間部には、固定部材３の鍔状部３Ｂａを全周にわたって支持自在な座繰り部８を備え、下端部には、ベース部材４Ｂを外嵌状態に装着自在な取付部９を備えて構成してある。
また、張出部７の外周部には、下方側に折れ曲がった突条部７ａが設けてある。この張出部７の下方に、後述する第２部材５の内周部が重なることで、互いは相対移動自在に連結される。その際、突状部７ａによって相対移動の範囲を規制することが可能となる。
従って、張出部７は、第１部材４と第２部材５との連結部Ｊの一部を構成している。 The central cylindrical member 4A is provided with a hook-shaped overhanging portion (an example of a first locking portion) 7 projecting to the outer peripheral side at the upper end portion, and in the upper and lower intermediate portions, the hook-like portion 3Ba of the fixing member 3 is provided all around It comprises a counterbored portion 8 which can be supported over the entire length, and an attachment portion 9 which can mount the base member 4B in an externally fitted state at the lower end portion.
Further, on the outer peripheral portion of the overhanging portion 7, a protruding ridge portion 7a bent downward is provided. When the inner peripheral portion of the second member 5 described later overlaps the lower side of the overhanging portion 7, they are mutually connected relatively freely. At that time, the range of relative movement can be restricted by the projecting portion 7a.
Therefore, the overhanging portion 7 constitutes a part of the connecting portion J between the first member 4 and the second member 5.

ベース部材４Ｂは、円板中央部に、中央筒部材４Ａの取付部９が内嵌自在な取付孔１０が形成してあり、この取付孔１０に取付部９を嵌合させることで、中央筒部材４Ａとベース部材４Ｂとを一体化することができる。尚、図には示していないが、取付部９を取付孔１０に挿通させて、貫通した先端縁部を外方へ拡径させておけば、外れ止め効果を期待でき、より一体性を維持し易い。
また、円板部分には、放射線に沿った複数のリブ１１が、周方向に間隔をあけて形成してあり、ベース部材４Ｂの剛性を高めている。周方向に隣接する各リブ１１の間には、前記板バネ６を支持する支持部１２が設けてある。 The base member 4B has an attachment hole 10 at the center of the disc in which the attachment portion 9 of the central cylindrical member 4A can be fitted therein. By attaching the attachment portion 9 to the attachment hole 10, the central cylinder is formed. The member 4A and the base member 4B can be integrated. Although not shown in the drawing, if the mounting portion 9 is inserted through the mounting hole 10 and the diameter of the penetrating tip edge is expanded outward, the detachment preventing effect can be expected and the integrity is maintained more Easy to do.
Further, on the disk portion, a plurality of ribs 11 along the radiation are formed at intervals in the circumferential direction, and the rigidity of the base member 4B is enhanced. Between each rib 11 adjacent to the circumferential direction, the support part 12 which supports the said leaf | plate spring 6 is provided.

支持部１２には、板バネ６を下方で支持する載置部１２ａと、板バネ６の外周側を支持して横方向に位置ずれするのを規制する規制部１２ｂとを備えている。支持部１２そのものは、円板部分の切り起こしによって形成されている。載置部１２ａの高さ寸法は、上述のリブ１１の高さ寸法と同じになるように設定されている。
尚、第１部材４における径方向での支持部１２の位置は、前記連結部Ｊより外方側に寄った位置に設定してある（図２参照）。 The support portion 12 is provided with a placement portion 12a for supporting the plate spring 6 at the lower side, and a regulating portion 12b for supporting the outer peripheral side of the plate spring 6 and regulating lateral displacement. The support portion 12 itself is formed by cutting and raising a disc portion. The height dimension of the mounting portion 12 a is set to be the same as the height dimension of the rib 11 described above.
The position of the support portion 12 in the radial direction in the first member 4 is set to a position closer to the outer side than the connecting portion J (see FIG. 2).

第２部材５は、外径寸法が第１部材４と同じ寸法の円板状に形成してあり、中央部分には、中央筒部材４Ａの座繰り部８の部分の外径寸法より大径で、且つ、張出部７の外径寸法より小径の挿通孔５ａが形成してある。
また、挿通孔５ａの周縁部は上方側に折れ曲がった突状部５ｂが設けてある。
従って、この挿通孔５ａの中に、中央筒部材４Ａが貫通する状態に第２部材５を配置することで、第１部材４と第２部材５とは、遊嵌状態に連結される。 The second member 5 is formed in a disk shape having the same outer diameter as the first member 4, and the central portion is larger in diameter than the outer diameter of the counterbore portion 8 of the central cylindrical member 4A. Also, an insertion hole 5a having a diameter smaller than the outer diameter of the overhanging portion 7 is formed.
Further, the peripheral edge portion of the insertion hole 5a is provided with a projecting portion 5b bent upward.
Therefore, the first member 4 and the second member 5 are coupled in a loose fit state by arranging the second member 5 in a state in which the central cylindrical member 4A penetrates in the insertion hole 5a.

この連結状態で、中央筒部材４Ａの張出部７が上に重なる第２部材５の部分を被重なり部（第２係止部の一例）５Ａという。
張出部７と被重なり部５Ａとは、上下に重なった状態で相対移動が許容される。また、横方向における相対移動においては、張出部の突状部７ａと、被重なり部５Ａの突状部５ｂとが径方向に当接することで、それ以上の移動は規制される。
前記張出部７と被重なり部５Ａとで前記連結部Ｊが構成されている。 In this coupled state, the portion of the second member 5 on which the overhanging portion 7 of the central cylindrical member 4A overlaps is referred to as an overlapping portion (an example of a second locking portion) 5A.
The relative movement is permitted in the state where the overhanging portion 7 and the overlapping portion 5A overlap vertically. Further, in the relative movement in the lateral direction, the further movement is restricted by the fact that the protruding portion 7a of the overhanging portion and the protruding portion 5b of the overlapping portion 5A abut in the radial direction.
The connecting portion J is configured by the overhanging portion 7 and the overlapping portion 5A.

第２部材５における前記被重なり部５Ａと外縁部５Ｃとの間の範囲は、一段高い平坦面となるように膨出形成された膨出部５Ｂとして構成してある。この膨出部５Ｂの上面に、ホットメルト接着層（接着部の一例）１３が設けてあり、このホットメルト接着層１３によって防水シート２を、接着固定することができる。因みに、ホットメルト接着層１３は、例えば、ポリエステル系、エチレン酢酸ビニル系、合成ゴム系、オレフィン系等の材質のものを採用することができ、融点は７０〜１６０℃のものが広く普及している。 A range between the overlapping portion 5A and the outer edge portion 5C in the second member 5 is configured as a bulging portion 5B which is bulgingly formed to be a flat surface higher by one step. A hot melt adhesive layer (an example of an adhesive part) 13 is provided on the upper surface of the bulging part 5 B, and the waterproof sheet 2 can be adhesively fixed by the hot melt adhesive layer 13. By the way, the hot melt adhesive layer 13 may be made of, for example, polyester, ethylene vinyl acetate, synthetic rubber, olefin, etc., and the melting point is 70 to 160 ° C. and widely used. There is.

外縁部５Ｃは、膨出部５Ｂから外径側に下り方向に傾斜した傾斜部５Ｃａと、傾斜部５Ｃａの下端部から横方向に延出した延出部５Ｃｂとで構成されている。
第２部材５は、図２に示すような設置状態において、延出部５Ｃｂが、ベース部材４Ｂの外周縁部上に重なる状態に寸法設定されている。 The outer edge portion 5C is constituted by an inclined portion 5Ca inclined downward in the outer diameter side from the bulging portion 5B and an extending portion 5Cb extending laterally from the lower end portion of the inclined portion 5Ca.
In the installed state as shown in FIG. 2, the second member 5 is dimensioned such that the extension portion 5Cb overlaps the outer peripheral edge portion of the base member 4B.

板バネ６は、板面６ａを屋根下地１表面の垂線方向に向けた状態で、周方向に沿う螺旋状に形成してあり、第２部材５の膨出部５Ｂの下方空間Ｖに設置されている。
板バネ６の螺旋形状は、下方側ほど螺旋径が大径となるように設定されている。
板バネ６の途中の複数個所では、厚み方向にジグザグ状の屈曲部６ｂを設けてあり（図３参照）、上下に重なる板バネ部間に隙間を確保できるように構成されている。この隙間によって、板バネ６は、上下方向の何れにも弾性変形が可能となっている。
また、板バネ６の上端部は、第２部材５の膨出部５Ｂの下面における内径側部分に固定してあると共に、下端部は、ベース部材４Ｂの載置部１２ａの内の一つに固定してある。 The plate spring 6 is formed in a spiral shape along the circumferential direction with the plate surface 6 a directed in the direction perpendicular to the surface of the roof base 1, and is installed in the lower space V of the bulging portion 5 B of the second member 5 ing.
The spiral shape of the plate spring 6 is set such that the spiral diameter becomes larger toward the lower side.
At a plurality of locations in the middle of the plate spring 6, zigzag bent portions 6b are provided in the thickness direction (see FIG. 3), and a gap can be secured between the plate springs overlapping vertically. The gap allows the plate spring 6 to be elastically deformed in any of the vertical directions.
Further, the upper end portion of the plate spring 6 is fixed to the inner diameter side portion of the lower surface of the bulging portion 5B of the second member 5, and the lower end portion is one of the mounting portions 12a of the base member 4B. It is fixed.

当該シート固定具Ｋは、初期状態においては、第１部材４と第２部材５とが同一縦軸芯Ｘ上に位置しており、互いの相対移動は、図４の矢印で示すように、例えば、横方向、縦方向、軸芯周り方向の少なくとも一種類の相対移動に追従することができる。そして、板バネ６は、相対移動した第１部材４と第２部材５とを、初期状態に弾性的に付勢して復帰させることができる。 In the sheet fastener K, in the initial state, the first member 4 and the second member 5 are located on the same longitudinal axis core X, and the relative movement between them is indicated by the arrow in FIG. For example, at least one kind of relative movement in the lateral direction, the longitudinal direction, and the direction around the axis can be followed. Then, the plate spring 6 can elastically bias the first member 4 and the second member 5 which have been moved relative to each other in the initial state and return them.

屋根下地１へのシート固定具Ｋ、防水シート２の固定については、次の手順によって実施することができる。 About fixing of the sheet fixture K to the roof base 1 and the waterproof sheet 2 can be carried out by the following procedure.

［１］屋根下地１の上の所定箇所に、シート固定具Ｋをそれぞれ固定する。
シート固定具Ｋの固定は、中央筒部材４Ｂの筒内空部に挿通した固定部材３を、屋根下地１にねじ込むことで行う。
［２］各シート固定具Ｋの上から防水シート２を被せ、防水シート２の上方から、電磁誘導加熱装置等によってシート固定具Ｋを加熱することでホットメルト接着層１３を溶かして接着固定する。 [1] The sheet fixture K is fixed to a predetermined place on the roof foundation 1 respectively.
The sheet fixing tool K is fixed by screwing the fixing member 3 inserted into the in-cylinder space of the central cylindrical member 4B into the roof foundation 1.
[2] Cover the waterproof sheet 2 from the top of each sheet fixture K, and heat and fix the hot melt adhesive layer 13 by heating the sheet fixture K from above the waterproof sheet 2 using an electromagnetic induction heating device or the like. .

以上のような防水シート固定状態においては、例えば、風の揚力で防水シート２が持ち上げられて波立つような場合でも、防水シート２から防水シート固定具Ｋに伝わる振動や横移動力や回転力や揚力等を、第１部材４と第２部材５との相対移動によって緩衝することができ、防水シート２を無理なく屋根下地１に支持できながら、固定部材３が緩むのを防止できるようになる。 In the waterproof sheet fixing state as described above, for example, even when the waterproof sheet 2 is lifted due to wind lift and waved, vibration, lateral movement force or rotational force transmitted from the waterproof sheet 2 to the waterproof sheet fixture K And lift, etc. can be buffered by the relative movement between the first member 4 and the second member 5 so that the waterproof member 2 can be supported on the roof foundation 1 without difficulty, and the fixing member 3 can be prevented from loosening. Become.

また、屋根下地１に固定した第１部材４に対して、第２部材５が移動しても、両者の初期連結状態に戻すように板バネ６が作用し、第２部材５に固定されている防水シート２も、屋根下地１上に設置した初期設置状態に戻すことができ、防水シート２全体として局部に圧縮力や引張力が残ったままになったり、シワがよったままになることを防止できるようになる。 Also, even if the second member 5 moves with respect to the first member 4 fixed to the roof foundation 1, the plate spring 6 acts so as to return to the initial connection state of both members, and is fixed to the second member 5 The waterproof sheet 2 can also be returned to the initial installation state installed on the roof base 1. As a whole of the waterproof sheet 2, the compressive force or the tensile force may remain in the local part or the wrinkles may remain. Can be prevented.

また、板バネ６は、連結部Ｊより径方向での外側の位置で、且つ、第２部材の膨出部５Ｂの下方空間Ｖに配置してあるから、シート固定具Ｋ全体とした厚みを増加せなくても、板バネ６として十分な付勢力を発揮できる部材断面を確保することが可能となる。
即ち、シート固定具Ｋの薄型設計を叶えながら、第１部材４と第２部材５との相対位置を初期連結状態に付勢する復帰機能を充分に発揮することが可能となる。 Further, since the leaf spring 6 is disposed at a position outside the connecting portion J in the radial direction and in the lower space V of the bulging portion 5B of the second member, the thickness of the sheet fixing tool K as a whole is Even if it does not increase, it becomes possible to secure a member cross section which can exert a sufficient biasing force as the plate spring 6.
That is, while achieving the thin design of the sheet fastener K, it is possible to sufficiently exert a return function of urging the relative position between the first member 4 and the second member 5 to the initial connected state.

その結果、風が吹いても、防水シート２を屋根下地１に確実な固定状態を維持した状態に固定でき、且つ、防水シート２の耐久性の低下を防止できるようになる。 As a result, even when the wind blows, the waterproof sheet 2 can be fixed to the roof foundation 1 in a state of being securely fixed, and the decrease in the durability of the waterproof sheet 2 can be prevented.

〔別実施形態〕
以下に他の実施の形態を説明する。 [Another embodiment]
Other embodiments will be described below.

〈１〉防水下地１は、先の実施形態で説明した屋根下地に限るものではなく、例えば、傾斜屋根等であってもよく、更には、防水下地１の表面に断熱パネル１ａを設けてあるものに限るものではない。
また、防水下地１の構造は、鉄筋コンクリートをはじめ、例えば、木造や、鉄骨、折板、デッキプレート等、特に限定されるものではない。 <1> The waterproof foundation 1 is not limited to the roof foundation described in the previous embodiment, and may be, for example, a sloped roof etc. Furthermore, the heat insulation panel 1a is provided on the surface of the waterproof foundation 1 It is not limited to things.
In addition, the structure of the waterproof foundation 1 is not particularly limited, including reinforced concrete, for example, wooden, steel frame, folded plate, deck plate, and the like.

〈２〉防水シート２は、先の実施形態で説明した塩化ビニル系等の合成樹脂製シート材に限るものではなく、公知の他の材料を使用したものであってもよい。 <2> The waterproof sheet 2 is not limited to the vinyl chloride-based sheet material made of vinyl chloride or the like described in the previous embodiment, and any other known material may be used.

〈３〉接着部１３は、先の実施形態で説明したホットメルト接着層を設ける構成に限るものではなく、公知の他の接着材を設ける構成であってもよい。 <3> The adhesion part 13 is not limited to the configuration in which the hot melt adhesive layer described in the previous embodiment is provided, and may be a configuration in which another known adhesive is provided.

〈４〉復帰機構６は、先の実施形態で説明した板バネによる構成に限らず、他のバネ部材（例えば、コイルスプリング等）で構成することも可能である。
また、復帰機構６を板バネで構成する場合であっても、その幅寸法や、長さ寸法や、厚み寸法や、螺旋巻き数や、変形特性等は、適宜設定することができる。 <4> The return mechanism 6 is not limited to the configuration using the plate spring described in the previous embodiment, but may be configured using another spring member (for example, a coil spring or the like).
In addition, even when the return mechanism 6 is configured by a plate spring, the width dimension, the length dimension, the thickness dimension, the number of spiral windings, the deformation characteristics, and the like can be appropriately set.

〈５〉防水シート固定具Ｋを防水下地１へ固定する固定部材３は、先の実施形態で説明したようなネジ部材３Ａと筒部材３Ｂとの２部材から構成したものに限らず、例えば、ネジ部材３Ａのみで構成してあってもよい。
固定部材３としてネジ部材３Ａのみで構成した防水シート固定具Ｋの一例としては、図５に示すものが挙げられる。この実施形態においては、表面に断熱パネル１ａを設けてない防水下地１に防水シート固定具Ｋが設置してある例を示している。
この防水シート固定具Ｋは、第１部材４の中央筒部材４Ａの内周面に、ネジ部材３Ａの拡径頭部３Ａａが当接する状態で防水下地１に固定されている。
また、中央筒部材４Ａの張出部７や、第２部材５の被重なり部５Ａには、先の実施形態で説明した突状部７ａ，５ｂは設けられていない。 <5> The fixing member 3 for fixing the waterproof sheet fixing tool K to the waterproof base 1 is not limited to the two members including the screw member 3A and the cylindrical member 3B as described in the above embodiment, for example You may comprise only with the screw member 3A.
As an example of the waterproof sheet fixing tool K which comprised only the screw member 3A as the fixing member 3, what is shown in FIG. 5 is mentioned. In this embodiment, an example in which the waterproof sheet fixing tool K is installed on the waterproof base 1 not provided with the heat insulation panel 1a on the surface is shown.
The waterproof sheet fixing member K is fixed to the waterproof foundation 1 in a state where the enlarged diameter head 3Aa of the screw member 3A abuts on the inner peripheral surface of the central cylindrical member 4A of the first member 4.
In addition, the protruding portions 7a and 5b described in the previous embodiment are not provided in the overhanging portion 7 of the central cylindrical member 4A and the overlapped portion 5A of the second member 5.

張出部７の外径寸法は、被重なり部５Ａの内径寸法より大きく設定してあり、両者の相対移動を許容すると共に、両者の係止状態については解除されないように構成されている。
また、板バネ６は、その上端部を、第２部材５の膨出部５Ｂにおける径方向中間部に固定してある。下端部は、先の実施形態と同様に、ベース部材４Ｂに固定してある。 The outside diameter dimension of the overhanging portion 7 is set larger than the inside diameter dimension of the overlapping portion 5A, so that relative movement between the two is allowed, and the locking state of both is not released.
Further, the upper end portion of the plate spring 6 is fixed to a radially intermediate portion of the bulging portion 5 B of the second member 5. The lower end portion is fixed to the base member 4B as in the previous embodiment.

〈６〉防水シート固定具Ｋの他の実施形態としては、図６、図７に示すものが挙げられる。この実施形態の防水シート固定具Ｋは、固定部材３と第１部材４とに主たる変更が加えられているから、変更箇所を主に説明する。ここに触れない構成に関しては、先の実施形態と同様である。 <6> As another embodiment of the waterproof sheet fixing tool K, what is shown to FIG. 6, FIG. 7 is mentioned. In the waterproof sheet fixing device K of this embodiment, main changes are made to the fixing member 3 and the first member 4, and therefore, the changed portions will be mainly described. The configuration not described here is the same as that of the previous embodiment.

この実施形態においては、防水下地１の表面に断熱パネル１ａが設けられていな場合を想定しており、固定部材３は、断熱パネル１ａの厚みに相当する長さが短く形成されている。そして、固定部材３の筒部材３Ｂの下面は、防水下地１に沿う平面形状に形成されている。 In this embodiment, it is assumed that the heat insulation panel 1a is not provided on the surface of the waterproof foundation 1, and the fixing member 3 is formed to have a short length corresponding to the thickness of the heat insulation panel 1a. The lower surface of the cylindrical member 3 </ b> B of the fixing member 3 is formed in a planar shape along the waterproof base 1.

第１部材４は、主に、ベース部材４Ｂに変更が加えられている。
ベース部材４Ｂには、放射線に沿った複数のリブ１１が、周方向に間隔をあけて形成してある。また、ベース部材４Ｂの中央に形成された取付孔１０の周り部分は、ベース部材４Ｂの外周部より高くなった環状平面部１４として構成されている。この環状平面部１４は、各リブ１１の上面と同じ高さとなるように形成してあり、各リブ１１の端部が連続して繋がるように構成されている。従って、ベース部材４Ｂの断面二次モーメントが大きくなり、更に剛性が高まっている。 The first member 4 is mainly changed in the base member 4B.
On the base member 4B, a plurality of ribs 11 along the radiation are formed at intervals in the circumferential direction. Further, the portion around the mounting hole 10 formed at the center of the base member 4B is configured as an annular flat portion 14 which is higher than the outer peripheral portion of the base member 4B. The annular flat surface portion 14 is formed to have the same height as the upper surface of each rib 11, and the end portions of the ribs 11 are connected continuously. Therefore, the second moment of area of the base member 4B is increased, and the rigidity is further increased.

また、各リブ１１の内、周方向に一本飛ばしのリブ１１については、リブ１１の長手方向での中間部を、板バネ６の幅寸法に相当する範囲で切り欠いてある。そして、この切欠き部１５に面するリブ箇所１１ａは、リブ高さ寸法を他の部分より高く設定してある。
従って、切欠き部１５に板バネ６を内嵌状態に位置させることで、切欠き部１５に面するリブ箇所１１ａが板バネ６の縁部に当接し、横方向にずれるのを防止できる。よって、切欠き部１５と、それに面するリブ箇所１１ａとで支持部１２が構成される。
このように、リブ１１の一部を支持部１２として兼用化でき、製作手間を軽減することができる。 Further, among the ribs 11, with respect to the rib 11 of one fly in the circumferential direction, an intermediate portion in the longitudinal direction of the rib 11 is cut out in a range corresponding to the width dimension of the plate spring 6. The rib portion 11a facing the notch portion 15 has a rib height dimension set higher than other portions.
Therefore, by positioning the plate spring 6 in the notch portion 15 in the inner fitting state, it is possible to prevent the rib portion 11 a facing the notch portion 15 from contacting the edge of the plate spring 6 and shifting in the lateral direction. Therefore, the support portion 12 is configured by the notch portion 15 and the rib portion 11 a facing the notch portion 15.
As described above, a part of the rib 11 can be shared as the support portion 12 and the manufacturing time can be reduced.

また、第１部材４は、ベース部材４Ｂと中央筒部材４Ａとの連結は、ベース部材４Ｂの取付孔１０に、中央筒部材４Ａの取付部９の先端部を貫通させた状態で、その取付部９の先端部を外側へ拡径させて係止してある。従って、外れ止め効果を発揮でき、第１部材４の一体性がより向上している。 Further, the first member 4 is attached to the base member 4B and the central cylindrical member 4A in a state where the tip of the attachment portion 9 of the central cylindrical member 4A is penetrated through the attachment hole 10 of the base member 4B. The tip end of the portion 9 is expanded outward and locked. Therefore, the separation preventing effect can be exhibited, and the integrity of the first member 4 is further improved.

尚、上述のように、図面との対照を便利にするために符号を記したが、該記入により本発明は添付図面の構成に限定されるものではない。また、本発明の要旨を逸脱しない範囲において、種々なる態様で実施し得ることは勿論である。 As mentioned above, although the reference numerals are given to make the contrast with the drawings more convenient, the present invention is not limited to the configuration of the attached drawings by the description. Moreover, of course in the range which does not deviate from the summary of this invention, it can implement in a various aspect.

当該防水シート固定具は、防水シートの新設に限らず、改修工事にも利用することができる。 The said waterproof sheet fixing tool can be utilized not only in the new construction of a waterproof sheet but in repair work.

１屋根下地（防水下地の一例）
２防水シート
４第１部材
５第２部材
５Ａ被重なり部（第２係止部の一例）
５Ｂ膨出部
６板バネ（復帰機構の一例）
６ａ板面
７張出部（第１係止部の一例）
１３ホットメルト接着層（接着部の一例）
Ｊ連結部
Ｖ下方空間 1 Roof foundation (an example of waterproof foundation)
2 waterproof sheet 4 first member 5 second member 5A overlapping portion (an example of a second locking portion)
5B bulging part 6 leaf spring (an example of return mechanism)
6a Plate surface 7 overhang (an example of the first locking portion)
13 Hot melt adhesive layer (example of adhesive part)
J junction V lower space

Claims

A disc-like waterproof sheet fixing device for fixing a waterproof sheet provided along a waterproof base to the waterproof base,
A first member fixable to the waterproof base;
A second member fixable to the waterproof sheet;
A connection that allows relative movement of the first member and the second member by engaging a first locking portion provided in the first member and a second locking portion provided in the second member. Department,
And a return mechanism for biasing the relative position between the first member and the second member to an initial connection state,
It said return mechanism, tarpaulins fixture is disposed on the outer peripheral side of the front Symbol connection.

The second member has a central portion side in plan view connected by the connecting portion, and an outer peripheral side thereof is provided with a bulging portion bulging in a direction perpendicular to the surface of the waterproof foundation, and the upper surface of the bulging portion The waterproof sheet fixing device according to claim 1, further comprising: a bonding portion to the waterproof sheet, and the return mechanism in a space below the bulging portion.

The waterproof sheet fixing device according to claim 2, wherein the return mechanism is a spring member provided across the lower surface of the bulging portion and the first member.

The said return mechanism is the state which orient | assigned the plate | board surface to the perpendicular direction of the said waterproof foundation surface, Comprising: It comprises with the leaf spring formed cyclically | annularly along the circumferential direction. Tarpaulin fasteners.