JP5785865B2

JP5785865B2 - Floor structure and floor component support

Info

Publication number: JP5785865B2
Application number: JP2011267495A
Authority: JP
Inventors: 秀明北浦
Original assignee: 有限会社ユース北浦
Priority date: 2011-12-07
Filing date: 2011-12-07
Publication date: 2015-09-30
Anticipated expiration: 2031-12-07
Also published as: JP2013119721A

Description

本発明は、建築物において、床基礎部上に床構成材を高さを調整可能に支持する床構造および床構成材支持具に関する。 The present invention relates to a floor structure and a floor component supporter that supports a floor component on a floor foundation so that its height can be adjusted in a building.

ねじ軸と、このねじ軸に螺合された雌ねじ部材とを有する床構成材支持具、およびこのような床構成材支持具を使用して床基礎部上に床構成材を高さを調整可能に支持する床構造は、従来より広く用いられている（例えば、特許文献１および２参照）。これらの床構成材支持具および床構造においては、前記雌ねじ部材側に床構成材を取り付け、上方からねじ軸または雌ねじ部材の一方に工具を嵌合して回転することにより、前記雌ねじ部材を前記ねじ軸の軸方向に移動させ、床構成材の高さを調整するようになっている。 A floor component support having a screw shaft and a female screw member screwed to the screw shaft, and the floor component can be adjusted in height on the floor base using such a floor component support The floor structure supported by the above is widely used conventionally (see, for example, Patent Documents 1 and 2). In these floor constituent material supports and floor structures, the floor constituent material is attached to the female screw member side, and a tool is fitted to one of the screw shaft or the female screw member from above to rotate, whereby the female screw member is It is moved in the axial direction of the screw shaft to adjust the height of the floor constituent material.

特開２０１１−７４６９４号公報JP 2011-74694 A 特開２００９-２８１０６４号公報JP 2009-281064 A

しかしながら、従来のこの種の床構造および床構成材支持具においては、ねじ軸または雌ねじ部材の一方のみしか上方から操作できず、不便な場合があるという問題があった。 However, in this type of conventional floor structure and floor component support, only one of the screw shaft and the female screw member can be operated from above, which may be inconvenient.

また、床構成材支持具が床スラブ等の床基礎部に単に載置されるだけで、ねじ、釘、接着剤等により取り付けられないないもの（例えば、特許文献１）が多かったが、安定性が欠けたり、ねじ軸の鉛直性を維持できなかったり、地震等による衝撃荷重に耐えられない等の虞があった。 In addition, there are many things (for example, Patent Document 1) in which a floor component support is simply placed on a floor foundation such as a floor slab and cannot be attached with screws, nails, adhesives, etc. There is a possibility that the property of the screw shaft is lacking, the verticality of the screw shaft cannot be maintained, or the impact load due to an earthquake or the like cannot be endured.

また、床構成材支持具が床基礎部にねじや釘により取り付けられるようになっているもの（例えば、特許文献２）は、まず先に床構成材支持具を床基礎部に取り付け、しかる後に床構成材支持具に床構成材を取り付け、床構成材の高さ調整作業をせざる得ない構成となっていた。しかしながら、現実には、まず先に床構成材を床構成材支持具に取り付け、床基礎部に単に載置した状態で床構成材の高さ調整作業を行い、しかる後に床構成材支持具を床基礎部に取り付ける方が作業性がよいことが多い。 In addition, in the case where the floor constituent material support is attached to the floor foundation by screws or nails (for example, Patent Document 2), the floor constituent material support is first attached to the floor foundation, and then The floor constituent material was attached to the floor constituent material support, and the height of the floor constituent material had to be adjusted. However, in reality, the floor constituent material is first attached to the floor constituent material support, and the height of the floor constituent material is adjusted while it is simply placed on the floor foundation. It is often easier to work on the floor foundation.

本発明は、このような従来の事情に鑑みてなされたもので、本発明の目的の一つは、上方からねじ軸および雌ねじ部材のいずれを操作しても床構成材の高さを調整することができる床構造および床構成材支持具を提供することにある。 The present invention has been made in view of such a conventional situation, and one of the objects of the present invention is to adjust the height of the floor constituent material by operating any of the screw shaft and the female screw member from above. It is to provide a floor structure and a floor component support that can be used.

本発明の他の目的は、まず床構成材を床構成材支持具に取り付け、次に床構成材の高さ調整作業を行い、しかる後に床構成材支持具を床基礎部に容易に取り付けることができる床構造および床構成材支持具を提供することにある。 Another object of the present invention is to first attach the floor constituent material to the floor constituent material support, then perform the height adjustment work of the floor constituent material, and then easily attach the floor constituent material support to the floor foundation. An object of the present invention is to provide a floor structure and a floor component material support that can be used.

本発明の他の目的は、床構成材支持具を床基礎部に取り付けた後も、床材の高さを調整行うことができる床構造および床構成材支持具を提供することにある。 Another object of the present invention is to provide a floor structure and a floor constituent material support that can adjust the height of the floor material even after the floor constituent material support is attached to the floor foundation.

本発明のさらに他の目的は、以下の説明から明らかになろう。 Still other objects of the present invention will become apparent from the following description.

請求項１に記載の本発明による床構成材支持具は、
建物の床基礎部上において床構成材を支持する床構成材支持具において、
軸体部と、昇降部とを有してなり、
前記軸体部は、鉛直方向に立ち上がるねじ軸と、このねじ軸の外周に設けられた雄ねじ部と、前記ねじ軸の上端側に形成された、該ねじ軸を回転させるためのねじ軸側工具嵌合部とを有し、前記床基礎部上に載置されるようになっており、
前記昇降部は、雌ねじ部材と、床構成材載置部と、皿ばねとを有し、
前記雌ねじ部材は、鉛直方向に設けられた筒状部と、この筒状部の内周に形成された、該雌ねじ部材を回転させるための雌ねじ部材側工具嵌合部と、前記筒状部より下方に設けられた前記筒状部より水平方向に突出する水平方向突出部と、前記筒状部の空洞部をその一部に含む軸方向に貫通された軸方向貫通穴と、この軸方向貫通穴の内周に設けられており、前記雄ねじ部に螺合された雌ねじ部とを有し、
前記床構成材載置部は、結合穴を有し、この結合穴に前記筒状部を貫通されているとともに、床構成材を載置されるようになっており、
前記皿ばねは前記床構成材載置部に重ねられた状態で前記筒状部に貫通されており、
前記筒状部は軸方向に圧縮されることにより一部の周壁を全周に渡って外側につば状に広がるようにかしめ変形されていて、これにより前記床構成材載置部および前記皿ばねは前記筒状部のかしめ変形部と前記水平方向突出部との間に挟まれるようにしてかしめられているが、前記床構成材載置部に対する前記雌ねじ部材の軸周りの相対回転は可能な状態とされており、かつ前記皿ばねは圧縮変形されて該皿ばねの復元力が前記雌ねじ部材と前記床構成材載置部との間に摩擦力を生じさせ、前記床構成材載置部に対する前記雌ねじ部材の相対回転に対し制動力を作用させるようになっており、
前記軸体部が回転されるか、または前記雌ねじ部材が回転されると、前記ねじ軸に対し前記雌ねじ部材が鉛直方向に移動し、前記床基礎部に対する前記床構成材の高さが調整されるようになっているものである。 The floor component material support according to the present invention as set forth in claim 1 comprises:
In the floor composition material support that supports the floor composition material on the floor foundation of the building,
It has a shaft body part and an elevating part,
The shaft body portion includes a screw shaft that rises in the vertical direction, a male screw portion that is provided on the outer periphery of the screw shaft, and a screw shaft side tool that is formed on the upper end side of the screw shaft and that rotates the screw shaft. And has a fitting portion, and is adapted to be placed on the floor foundation portion,
The elevating part has a female screw member, a floor component placing part, and a disc spring,
The female screw member includes a cylindrical portion provided in the vertical direction, a female screw member side tool fitting portion formed on the inner periphery of the cylindrical portion for rotating the female screw member, and the cylindrical portion. A horizontal projecting portion projecting in a horizontal direction from the cylindrical portion provided below, an axial through hole penetrating in the axial direction including a hollow portion of the cylindrical portion as a part thereof, and the axial penetration Provided on the inner periphery of the hole, and having a female screw part screwed into the male screw part,
The floor component placing part has a coupling hole, and the tubular part is passed through the coupling hole, and the floor constituent material is placed thereon,
The disc spring is penetrated by the cylindrical part in a state where it is overlaid on the floor component placing part,
The cylindrical portion is deformed by being compressed in the axial direction so that a part of the peripheral wall spreads outwardly in a flange shape over the entire circumference, thereby the floor component material placing portion and the disc spring Is caulked so as to be sandwiched between the caulking deformed portion of the cylindrical portion and the horizontal protruding portion, but relative rotation around the axis of the female screw member with respect to the floor component placing portion is possible The disc spring is compressed and deformed, and the restoring force of the disc spring generates a frictional force between the female screw member and the floor constituent material placing portion, and the floor constituent material placing portion A braking force is applied to the relative rotation of the female screw member with respect to
When the shaft body portion is rotated or the female screw member is rotated, the female screw member moves in the vertical direction with respect to the screw shaft, and the height of the floor constituent material with respect to the floor foundation portion is adjusted. It is something that has come to be.

請求項６に記載の本発明による床構造は、
建物の床基礎部上に載置された床構成材支持具と、この床構成材支持具に取り付けられた床構成材とを有してなる床構造において、
前記床構成材支持具は、軸体部と、昇降部とを有してなり、
前記軸体部は、鉛直方向に立ち上がるねじ軸と、このねじ軸の外周に設けられた雄ねじ部と、前記ねじ軸の上端側に形成された、該ねじ軸を回転させるためのねじ軸側工具嵌合部とを有し、前記床基礎部上に載置されるようになっており、
前記昇降部は、雌ねじ部材と、床構成材載置部と、皿ばねとを有し、
前記雌ねじ部材は、鉛直方向に設けられた筒状部と、この筒状部の内周に形成された、該雌ねじ部材を回転させるための雌ねじ部材側工具嵌合部と、前記筒状部より下方に設けられた前記筒状部より水平方向に突出する水平方向突出部と、前記筒状部の空洞部をその一部に含む軸方向に貫通された軸方向貫通穴と、この軸方向貫通穴の内周に設けられており、前記雄ねじ部に螺合された雌ねじ部とを有し、
前記床構成材載置部は、結合穴を有し、この結合穴に前記筒状部を貫通されているとともに、床構成材を載置されており、
前記皿ばねは前記床構成材載置部に重ねられた状態で前記筒状部に貫通されており、
前記筒状部は軸方向に圧縮されることにより一部の周壁を全周に渡って外側につば状に広がるようにかしめ変形されていて、これにより前記床構成材載置部および前記皿ばねは前記筒状部のかしめ変形部と前記水平方向突出部との間に挟まれるようにしてかしめられているが、前記床構成材載置部に対する前記雌ねじ部材の軸周りの相対回転は可能な状態とされており、かつ前記皿ばねは圧縮変形されて該皿ばねの復元力が前記雌ねじ部材と前記床構成材載置部との間に摩擦力を生じさせ、前記床構成材載置部に対する前記雌ねじ部材の相対回転に対し制動力を作用させるようになっており、
前記軸体部が回転されるか、または前記雌ねじ部材が回転されると、前記ねじ軸に対し前記雌ねじ部材が鉛直方向に移動し、前記床基礎部に対する前記床構成材の高さが調整されるようになっているものである。 The floor structure according to the present invention as set forth in claim 6 comprises:
In a floor structure comprising a floor constituent material support placed on the floor foundation of a building, and a floor constituent material attached to the floor constituent material support,
The floor constituent material support has a shaft body part and an elevating part,
The shaft body portion includes a screw shaft that rises in the vertical direction, a male screw portion that is provided on the outer periphery of the screw shaft, and a screw shaft side tool that is formed on the upper end side of the screw shaft and that rotates the screw shaft. And has a fitting portion, and is adapted to be placed on the floor foundation portion,
The elevating part has a female screw member, a floor component placing part, and a disc spring,
The female screw member includes a cylindrical portion provided in the vertical direction, a female screw member side tool fitting portion formed on the inner periphery of the cylindrical portion for rotating the female screw member, and the cylindrical portion. A horizontal projecting portion projecting in a horizontal direction from the cylindrical portion provided below, an axial through hole penetrating in the axial direction including a hollow portion of the cylindrical portion as a part thereof, and the axial penetration Provided on the inner periphery of the hole, and having a female screw part screwed into the male screw part,
The floor component placing part has a coupling hole, and the tubular part is passed through the coupling hole, and the floor constituent material is placed,
The disc spring is penetrated by the cylindrical part in a state where it is overlaid on the floor component placing part,
The cylindrical portion is deformed by being compressed in the axial direction so that a part of the peripheral wall spreads outwardly in a flange shape over the entire circumference, thereby the floor component material placing portion and the disc spring Is caulked so as to be sandwiched between the caulking deformed portion of the cylindrical portion and the horizontal protruding portion, but relative rotation around the axis of the female screw member with respect to the floor component placing portion is possible The disc spring is compressed and deformed, and the restoring force of the disc spring generates a frictional force between the female screw member and the floor constituent material placing portion, and the floor constituent material placing portion A braking force is applied to the relative rotation of the female screw member with respect to
When the shaft body portion is rotated or the female screw member is rotated, the female screw member moves in the vertical direction with respect to the screw shaft, and the height of the floor constituent material with respect to the floor foundation portion is adjusted. It is something that has come to be.

請求項１および６に記載の本発明においては、上方から雌ねじ部材の軸方向貫通穴を通してねじ軸側工具嵌合部に工具を嵌合してねじ軸ひいては軸体部を回転して床構成材の高さを調整することも、上方から雌ねじ部材側工具嵌合部に工具を嵌合して雌ねじ部材を回転して床構成材の高さを調整することもできる。 In this invention of Claim 1 and 6, a tool is fitted to a screw shaft side tool fitting part through the axial direction through-hole of an internal thread member from upper direction, a screw shaft and a shaft body part are rotated, and a floor constituent material The height of the floor component can be adjusted by fitting a tool to the female screw member side tool fitting portion from above and rotating the female screw member.

請求項２に記載の本発明による床構成材支持具並びに請求項７および１０に記載の本発明による床構造においては、ねじ軸は筒状をなしていて、ねじ軸側工具嵌合部はねじ軸の内周に形成されており、軸体部はねじ軸の空洞部を含む、軸方向に貫通された軸方向貫通穴を有し、この軸方向貫通穴は雌ねじ部材の軸方向貫通穴と連通している。 In the floor component material support according to the present invention as set forth in claim 2 and the floor structure according to the present invention as set forth in claims 7 and 10, the screw shaft has a cylindrical shape, and the screw shaft side tool fitting portion is a screw. The shaft body portion includes an axial through hole penetrating in the axial direction including the hollow portion of the screw shaft, and the axial through hole is an axial through hole of the female screw member. Communicate.

したがって、まず床構成材を床構成材支持具に取り付け、次に床構成材の高さ調整作業を行い、しかる後にねじまたは釘を雌ねじ部材の軸貫通穴を経由して軸体部の軸方向貫通穴に挿通し、建物の床基礎部（床基礎部に直接取り付けるのでない場合は、中間に介在される部材）にねじ込むかまたは打ち込むことにより、床構成材支持具を床基礎部に取り付けることもできるし（請求項７の床構造）、雌ねじ部材の軸方向貫通穴および軸体部の軸方向貫通穴を経由して軸体部と床基礎部との間に供給した接着剤により軸体部を床基礎部に接着して取り付ける（請求項１０の床構造）こともできる。 Therefore, the floor constituent material is first attached to the floor constituent material support, and then the height of the floor constituent material is adjusted, and then the screws or nails are passed through the shaft through holes of the female screw member in the axial direction of the shaft body portion. Attach the floor component support to the floor foundation by screwing or driving into the floor foundation of the building (if not directly attached to the floor foundation, a member that is interposed in between) (The floor structure of claim 7), and the shaft body by the adhesive supplied between the shaft body portion and the floor base portion through the axial through hole of the female screw member and the axial through hole of the shaft body portion. It is also possible to attach the part to the floor base part (floor structure of claim 10).

また、このようにして軸体部を床基礎部に取り付けると、以後はねじ軸（軸体部）を回転して床構成材の高さを調整することはできなくなるが、依然として、雌ねじ部材工具嵌合部の方に工具を嵌合して雌ねじ部材を回転して床構成材の高さを調整することはできるので、床構成材支持具を床基礎部に取り付けた後も床構成材の高さを調整を行うことができる。 Further, when the shaft body is attached to the floor foundation in this way, the screw shaft (shaft body) cannot be rotated thereafter to adjust the height of the floor component, but the female thread member tool is still used. It is possible to adjust the height of the floor constituent material by fitting a tool toward the fitting portion and rotating the female screw member, so the floor constituent material can be adjusted even after the floor constituent material support is attached to the floor foundation. The height can be adjusted.

本発明によれば、
（イ）上方からねじ軸（軸体部）および雌ねじ部材のいずれを操作しても床構成材の高さを調整することができる、
（ロ）ねじ軸を筒状とし、ねじ軸側工具嵌合部をねじ軸の内周に形成し、軸体部がねじ軸の空洞部を含む、軸方向に貫通された軸方向貫通穴を有し、この軸方向貫通穴が雌ねじ部材の軸方向貫通穴と連通しているようにすれば、まず先に床構成材を床構成材支持具に取り付け、床構成材の高さ調整作業を行い、しかる後に床構成材支持具を床基礎部に取り付けることができ、しかも床構成材支持具を床基礎部に取り付けた後も、雌ねじ部材工具嵌合部の方に工具を嵌合し、雌ねじ部材を回転して床構成材の高さを調整することができる、
等の優れた効果を得られるものである。 According to the present invention,
(A) The height of the floor component can be adjusted by operating any of the screw shaft (shaft body portion) and the female screw member from above.
(B) The screw shaft has a cylindrical shape, the screw shaft side tool fitting portion is formed on the inner periphery of the screw shaft, and the shaft body portion includes an axial through hole penetrating in the axial direction including the hollow portion of the screw shaft. If this axial through hole communicates with the axial through hole of the female screw member, the floor constituent material is first attached to the floor constituent material support, and the height of the floor constituent material is adjusted. After that, the floor constituent material support can be attached to the floor foundation, and after the floor constituent material support is attached to the floor foundation, the tool is fitted toward the female screw member tool fitting portion, The height of the floor component can be adjusted by rotating the female screw member.
It is possible to obtain excellent effects such as.

本発明の実施例１における床構成材支持具を示す分解斜視図である。It is a disassembled perspective view which shows the floor component material support tool in Example 1 of this invention. 実施例１における床構成材支持具の軸体部を示す平面図である。It is a top view which shows the shaft body part of the floor constituent material support in Example 1. 実施例１における床構成材支持具の軸体部を示す正面図である。It is a front view which shows the shaft body part of the floor constituent material support in Example 1. 図２のＩＶ−ＩＶ線における断面図である。It is sectional drawing in the IV-IV line of FIG. 実施例１における床構成材支持具の昇降部を示す平面図である。It is a top view which shows the raising / lowering part of the floor constituent material support in Example 1. 実施例１における床構成材支持具の昇降部を示す正面図である。It is a front view which shows the raising / lowering part of the floor constituent material support in Example 1. 実施例１における床構成材支持具の昇降部を示す底面図である。It is a bottom view which shows the raising / lowering part of the floor constituent material support in Example 1. 図５のＶＩＩＩ−ＶＩＩＩ線における断面図である。It is sectional drawing in the VIII-VIII line of FIG. 実施例１における床構成材支持具全体を示す平面図である。It is a top view which shows the whole floor constituent material support in Example 1. FIG. 実施例１における床構成材支持具全体を示す断面図である。It is sectional drawing which shows the whole floor constituent material support in Example 1. FIG. 本発明の実施例１における床構造を示す断面図である。It is sectional drawing which shows the floor structure in Example 1 of this invention. 本発明の実施例２における床構造を示す断面図である。It is sectional drawing which shows the floor structure in Example 2 of this invention. 本発明の実施例３における床構成材支持具全体を示す断面図である。It is sectional drawing which shows the whole floor constituent material support in Example 3 of this invention.

以下、本発明を図面に示す実施例に基づいて説明する。 Hereinafter, the present invention will be described based on embodiments shown in the drawings.

図１〜１１は本発明による床構造および床構成材支持具の実施例１を示しており、このうち図１〜１０は実施例１における床構成材支持具１、図１１は実施例１における床構造を示している。 FIGS. 1-11 has shown Example 1 of the floor structure by this invention, and the floor component material support tool, among these, FIGS. 1-10 are the floor component material support tool 1 in Example 1, and FIG. The floor structure is shown.

図１，９および１０に示されているように、床構成材支持具１は軸体部２と、昇降部３と、ゴム弾性キャップ４と、滑り支承板５とを有してなる。 As shown in FIGS. 1, 9 and 10, the floor constituent material support 1 includes a shaft body portion 2, an elevating portion 3, a rubber elastic cap 4, and a sliding support plate 5.

図１〜４に示されているように、前記軸体部２は、鋼鉄、ステンレス鋼等の金属からなり、円板状のベース部６と、このベース部６から鉛直方向に立ち上がる大略円筒状のねじ軸７とを一体的に有している。前記ねじ軸７の外周には、雄ねじ部８が設けられている。前記ねじ軸７の上端側内周には、横断面六角形状のねじ軸側工具嵌合部９が設けられている。図４によく示されているように、前記ベース部６には、ねじ軸７の空洞部に連続する穴が設けられており、これにより全体として軸体部２には、ねじ軸７の空洞部をその一部として含み、該軸体部２を軸方向に貫通する軸方向貫通穴１０が形成されている。 As shown in FIGS. 1 to 4, the shaft body portion 2 is made of a metal such as steel or stainless steel, and has a disk-like base portion 6 and a generally cylindrical shape rising from the base portion 6 in the vertical direction. The screw shaft 7 is integrally provided. A male screw portion 8 is provided on the outer periphery of the screw shaft 7. A screw shaft side tool fitting portion 9 having a hexagonal cross section is provided on the inner periphery on the upper end side of the screw shaft 7. As shown well in FIG. 4, the base portion 6 is provided with a hole continuous to the hollow portion of the screw shaft 7, so that the shaft body portion 2 as a whole has a cavity of the screw shaft 7. An axial through hole 10 that includes the portion as a part thereof and penetrates the shaft body portion 2 in the axial direction is formed.

図１，図５〜８に示されているように、前記昇降部３は、雌ねじ部材１１と、床構成材載置部１２と、皿ばね１３とを有してなる。前記雌ねじ部材１１は、鋼鉄、ステンレス鋼等の金属からなり、鉛直方向に設けられていて該雌ねじ部材１１の上端側をなす筒状部１４と、この筒状部１４より下方に設けられていて筒状部１４より水平方向に突出する水平方向突出部１５とを一体的に有している。前記筒状部１４の上端側内周には、横断面六角形状の雌ねじ部材側工具嵌合部１６が形成されている。前記水平方向突出部１５の外周は、横断面六角形状とされ、スパナ等の工具を嵌合して雌ねじ部材１１を回転するための工具嵌合部として使用できるようになっている。図８によく示されているように、前記水平方向突出部１５の中心部には、筒状部１４の空洞部に連続する穴が設けられており、これにより全体として雌ねじ部材１１には、筒状部１４の空洞部をその一部として含み、該雌ねじ部材１１を軸方向に貫通する軸方向貫通穴１７が形成されている。この軸方向貫通穴１７の内周の一部には、雌ねじ部１８が設けられている。 As shown in FIGS. 1 and 5 to 8, the elevating unit 3 includes a female screw member 11, a floor constituent material placing unit 12, and a disc spring 13. The female screw member 11 is made of a metal such as steel or stainless steel, and is provided in a vertical direction and is provided below the cylindrical portion 14 and a cylindrical portion 14 that forms the upper end side of the female screw member 11. A horizontal protruding portion 15 that protrudes in the horizontal direction from the cylindrical portion 14 is integrally provided. A female screw member side tool fitting portion 16 having a hexagonal cross section is formed on the inner periphery on the upper end side of the cylindrical portion 14. The outer periphery of the horizontal protruding portion 15 has a hexagonal cross section, and can be used as a tool fitting portion for fitting a tool such as a spanner to rotate the female screw member 11. As shown well in FIG. 8, a hole that is continuous with the hollow portion of the cylindrical portion 14 is provided in the central portion of the horizontal protruding portion 15, and thus the female screw member 11 as a whole has An axial through hole 17 that includes the hollow portion of the cylindrical portion 14 as a part thereof and penetrates the female screw member 11 in the axial direction is formed. An internal thread portion 18 is provided on a part of the inner periphery of the axial through hole 17.

前記床構成材載置部１２は、鋼鉄、ステンレス鋼等の金属からなり、円板状で中心部に円形の結合穴１９（図８参照）を有しており、この結合穴１９に筒状部１４を貫通されている。また、前記床構成材載置部１２には、取付穴２０が設けられている。前記皿ばね１３は、床構成材載置部１２に重ねられた状態で筒状部１４に貫通されている。 The floor component placing part 12 is made of a metal such as steel or stainless steel, has a disk shape, and has a circular coupling hole 19 (see FIG. 8) in the center, and the coupling hole 19 has a cylindrical shape. The part 14 is penetrated. The floor component placing part 12 is provided with mounting holes 20. The disc spring 13 is passed through the tubular portion 14 in a state where the disc spring 13 is overlaid on the floor constituent material placement portion 12.

前記筒状部１４の一部は、軸方向に圧縮されることにより、一部の周壁を全周に渡って外側につば状に広がるようにかしめ変形されている（符号２１はこのかしめ変形部を示している）。これにより、床構成材載置部１２および皿ばね１３は筒状部１４のかしめ変形部２１と水平方向突出部１５との間に挟まれるようにしてかしめられている。ただし、前記かしめはある程度緩く行われており、それにより、床構成材載置部１２に対する雌ねじ部材１１の軸周りの相対回転は可能な状態とされている。また、前記かしめにより、皿ばね１３は圧縮変形されて該皿ばね１３の復元力（雌ねじ部材１１に対し床構成材載置部１２を下方に付勢している）が雌ねじ部材１１と床構成材載置部１２との間に摩擦力を生じさせ、床構成材載置部１２に対する雌ねじ部材１１の相対回転に対し制動力を作用させるようになっている。 A part of the cylindrical part 14 is crimped and deformed so as to spread outwardly in the form of a collar over the entire circumference by being compressed in the axial direction (reference numeral 21 denotes this caulking deformed part). Is shown). As a result, the floor component placing part 12 and the disc spring 13 are caulked so as to be sandwiched between the caulking deformation part 21 of the cylindrical part 14 and the horizontal protruding part 15. However, the caulking is performed somewhat loosely, so that the relative rotation around the axis of the female screw member 11 with respect to the floor constituent material placing portion 12 is enabled. Further, the disc spring 13 is compressed and deformed by the caulking, and the restoring force of the disc spring 13 (which urges the floor constituent material mounting portion 12 downward with respect to the female screw member 11) is combined with the female screw member 11 and the floor configuration. A frictional force is generated between the material mounting portion 12 and the braking force is applied to the relative rotation of the female screw member 11 with respect to the floor constituent material mounting portion 12.

前記ゴム弾性キャップ４はゴムまたは熱可塑性エラストマー等のゴム弾性を有する材料からなるからなり、図１および１０に示されているように、大略有底円筒状をなしており、その内部に軸体部２のベース部６を収容するようになっている。前記ゴム弾性キャップ４の底部中心部には円形の穴２２が設けられている。前記滑り支承板５はプラスチックからなり、中心部に円形の穴２３を有する円板状をなしており、ゴム弾性キャップ４の底部とベース部６との間に介在され、ゴム弾性キャップ４に対し軸体部２が円滑に回転できるようにしている。 The rubber elastic cap 4 is made of a material having rubber elasticity such as rubber or a thermoplastic elastomer, and has a generally bottomed cylindrical shape as shown in FIGS. The base portion 6 of the portion 2 is accommodated. A circular hole 22 is provided in the center of the bottom of the rubber elastic cap 4. The sliding support plate 5 is made of plastic and has a disk shape with a circular hole 23 in the center, and is interposed between the bottom of the rubber elastic cap 4 and the base portion 6. The shaft body 2 can be rotated smoothly.

前述のように、図１１は、本実施例における床構造を示している。この床構造を施工する場合、まず下地板２４（本実施例における床構成材の１つ）に取付穴２０を用いて取付ねじ２５により床構成材載置部１２を取り付ける。なお、下地板２４の下面には断熱材層２６が貼られている。 As described above, FIG. 11 shows the floor structure in the present embodiment. When constructing this floor structure, first, the floor constituent material placing portion 12 is attached to the base plate 24 (one of the floor constituent materials in the present embodiment) using the attachment holes 20 with the attachment screws 25. A heat insulating material layer 26 is attached to the lower surface of the base plate 24.

次に、ＡＬＣ版からなる床基礎部２７上に、ベース部６がゴム弾性キャップ４および滑り支承板５を介して床基礎部２７の表面に接することとなるようにして、床構成材支持具１を載置する。なお、図では床構成材支持具１を１つのみ示しているが、床構成材支持具１は必要数設置される。 Next, on the floor base portion 27 made of an ALC plate, the base portion 6 is brought into contact with the surface of the floor base portion 27 via the rubber elastic cap 4 and the sliding support plate 5, so that the floor component supporter 1 is placed. Although only one floor constituent material support 1 is shown in the figure, the required number of floor constituent material supports 1 are installed.

次に、上方から雌ねじ部材１１の軸方向貫通穴１７を通して軸体部２のねじ軸７のねじ軸側工具嵌合部９に六角レンチ等の工具を嵌合してねじ軸７ひいては軸体部２を回転して下地板２４の高さを調整するか、または上方から雌ねじ部材１１の筒状部１４の雌ねじ部材側工具嵌合部１６に六角レンチ等の工具を嵌合して筒状部１４ひいては雌ねじ部材１１を回転して下地板２４の高さを調整する。 Next, a tool such as a hex wrench is fitted to the screw shaft side tool fitting portion 9 of the screw shaft 7 of the shaft body portion 2 through the axial through hole 17 of the female screw member 11 from above, and the screw shaft 7 and thus the shaft body portion. 2 is adjusted to adjust the height of the base plate 24, or a tool such as a hexagon wrench is fitted to the female screw member side tool fitting portion 16 of the cylindrical portion 14 of the female screw member 11 from above. 14 and thus the female screw member 11 is rotated to adjust the height of the base plate 24.

ここで、軸体部２を回転して高さ調整作業を行う場合は、軸体部２の方は皿ばね１３による摩擦力を作用されていないので、雌ねじ部材１１より軽く回転できるという利点がある。他方、雌ねじ部材１１を回転して高さ調整作業を行う場合は、雌ねじ部材側工具嵌合部１６はねじ軸側工具嵌合部９より大きくでき、したがって大きなトルクを作用することができるという利点が得られる。いずれの工具嵌合部９，１６を使用して高さ調整を行うかは、このようなそれぞれの利点を考慮して選択することができる。 Here, when the shaft body portion 2 is rotated and the height adjustment operation is performed, the shaft body portion 2 is not subjected to the frictional force of the disc spring 13, and therefore has the advantage that it can be rotated lighter than the female screw member 11. is there. On the other hand, when the height adjustment operation is performed by rotating the female screw member 11, the female screw member side tool fitting portion 16 can be made larger than the screw shaft side tool fitting portion 9, and therefore a large torque can be applied. Is obtained. Which of the tool fittings 9 and 16 is used for height adjustment can be selected in consideration of such advantages.

また、万一ねじ軸側工具嵌合部９または雌ねじ部材側工具嵌合部１６の一方が損傷して使用不能になっても、残りの一方の工具嵌合部９，１６を使用して高さ調整を行うことができる。 Even if one of the screw shaft side tool fitting portion 9 or the female screw member side tool fitting portion 16 is damaged and becomes unusable, the remaining one of the tool fitting portions 9 and 16 is used. Adjustments can be made.

なお、側方から水平方向突出部１５にアクセスできる場合は、水平方向突出部１５に工具を嵌合して雌ねじ部材１１を回転して下地板２４の高さを調整してもよい。 If the horizontal protrusion 15 can be accessed from the side, a tool may be fitted to the horizontal protrusion 15 and the female screw member 11 may be rotated to adjust the height of the base plate 24.

次に、コンクリート用ねじまたは釘２８を、雌ねじ部材１１の軸方向貫通穴１７を経由して、軸体部２の軸方向貫通穴１０、滑り支承板５の穴２３およびゴム弾性キャップ４の穴２２に挿通し、床基礎部２７にねじ込むかまたは打ち込むことにより、床構成材支持具１を床基礎部２７に取り付ける。 Next, the concrete screw or nail 28 is passed through the axial through hole 17 of the female screw member 11, the axial through hole 10 of the shaft body 2, the hole 23 of the sliding support plate 5, and the hole of the rubber elastic cap 4. The floor constituent material support 1 is attached to the floor foundation 27 by being inserted into 22 and screwed or driven into the floor foundation 27.

このようにして床構成材支持具１を床基礎部２７に取り付けた後は、軸体部２を回転して床構成材の高さを調整することはできなくなるが、雌ねじ部材側工具嵌合部１６の方に工具を嵌合して筒状部１４ひいては雌ねじ部材１１を回転することにより、その後も下地板２４（床構成材）の高さを調整することができる。したがって、床構成材支持具１を床基礎部２７に取り付けた後も下地板２４（床構成材）の高さを調整を行うことができる。 After the floor component material support 1 is attached to the floor foundation 27 in this way, the shaft body portion 2 cannot be rotated to adjust the height of the floor component, but the female thread member side tool fitting By fitting the tool toward the portion 16 and rotating the cylindrical portion 14 and thus the female screw member 11, the height of the base plate 24 (floor component) can be adjusted thereafter. Therefore, the height of the base plate 24 (floor component) can be adjusted even after the floor component support 1 is attached to the floor foundation 27.

また、皿ばね１３が雌ねじ部材１１と床構成材載置部１２との間に摩擦力を生じさせ、床構成材載置部１２に対する雌ねじ部材１１の回転に対し制動力を作用させているので、床構成材支持具１を床基礎部２７に取り付けた後、雌ねじ部材１１が勝手に回転して下地板２４（床構成材）の調整された高さが狂ってしまうことはない。 Further, since the disc spring 13 generates a frictional force between the female screw member 11 and the floor constituent material placing portion 12, a braking force is applied to the rotation of the female screw member 11 with respect to the floor constituent material placing portion 12. After the floor constituent material support 1 is attached to the floor foundation 27, the female screw member 11 does not rotate freely and the adjusted height of the base plate 24 (floor constituent material) does not go out of order.

軸体部２を床基礎部２７に取り付けた後、下地板２４の上に、床暖房パネル２９（本実施例における床構成材の１つ）取り付け、さらにその上に床仕上げ材３０（本実施例における床構成材の１つ）を取り付ける。 After the shaft body part 2 is attached to the floor foundation part 27, a floor heating panel 29 (one of the floor constituent materials in this embodiment) is attached on the base plate 24, and a floor finishing material 30 (this implementation) is further provided thereon. Install one of the floor components in the example).

図１２は、本発明による床構造および床構成材支持具の実施例２を示している。本実施例においては、床構成材支持具１は、ゴム弾性キャップ４および滑り支承板５を有していないが、他の構成は実施例１の場合と同様である。。 FIG. 12 shows Example 2 of the floor structure and floor component material support according to the present invention. In the present embodiment, the floor component material support 1 does not have the rubber elastic cap 4 and the sliding support plate 5, but other configurations are the same as those in the first embodiment. .

この床構造を施工する場合、まず、実施例の１の場合と同様にして、下地板２４（本実施例における床構成材の１つ）に取付穴２０を用いて取付ねじ２５により床構成材載置部１２を取り付ける。 When constructing this floor structure, first, in the same manner as in the case of Example 1, the floor component 24 is attached to the base plate 24 (one of the floor components in the present example) by using the mounting holes 20 and the mounting screws 25. The mounting part 12 is attached.

次に、ＡＬＣ版からなる床基礎部２７上に、ベース部６の底面が床基礎部２７の表面に直接接することとなるようにして、床構成材支持具１を載置する。 Next, the floor component material support 1 is placed on the floor foundation portion 27 made of an ALC plate so that the bottom surface of the base portion 6 is in direct contact with the surface of the floor foundation portion 27.

次に、実施例の１の場合と同様にして、下地板２４の高さを調整する。 Next, the height of the base plate 24 is adjusted in the same manner as in the first embodiment.

次に、矢印Ａで示されるように、雌ねじ部材１１の軸方向貫通穴１７および軸体部２の軸方向貫通穴１０を経由して軸体部２のベース部６の底面と床基礎部２７との間に接着剤３１を供給してベース部６を床基礎部２７に接着して取り付ける。なお、この場合、ベース部６の底面に放射方向に溝（図示せず）を設ける等により、ベース部６の底面と床基礎部２７との間に接着剤３１が供給されやすくなるようにしてもよい。 Next, as indicated by an arrow A, the bottom surface of the base portion 6 and the floor base portion 27 of the shaft body portion 2 are passed through the axial through hole 17 of the female screw member 11 and the axial direction through hole 10 of the shaft body portion 2. The base part 6 is adhered and attached to the floor foundation part 27 by supplying the adhesive 31 between the two. In this case, the adhesive 31 is easily supplied between the bottom surface of the base portion 6 and the floor base portion 27 by providing a groove (not shown) in the radial direction on the bottom surface of the base portion 6. Also good.

このようにして、軸体部２を床基礎部２７に取り付けた後、下地板２４の上に床暖房パネル２９（本実施例における床構成材の１つ）取り付け、さらにその上に床仕上げ材３０（本実施例における床構成材の１つ）を取り付ける。 In this way, after the shaft body portion 2 is attached to the floor foundation portion 27, the floor heating panel 29 (one of the floor constituent materials in this embodiment) is attached on the base plate 24, and the floor finishing material is further provided thereon. 30 (one of the floor components in this example) is attached.

図１３は、本発明による床構成材支持具の実施例３を示している。本実施例においては、昇降部３の床構成材載置部１２は、結合穴１９の周囲の部分をプレス絞り加工している（符号３２はこの絞り加工部を示している）。他の構成は実施例１と同様である。 FIG. 13 shows Embodiment 3 of the floor component material support according to the present invention. In the present embodiment, the floor component placing part 12 of the elevating part 3 press-draws the part around the coupling hole 19 (reference numeral 32 indicates this drawing part). Other configurations are the same as those of the first embodiment.

本実施例においては、床構成材載置部１２の強度を向上できる他、実施例１と同様の作用効果を得ることができる。 In the present embodiment, the strength of the floor component placing part 12 can be improved, and the same effects as those of the first embodiment can be obtained.

なお、前記各実施例は暖房パネルや断熱材層を含む床構造であるが、本発明は暖房パネルや断熱材層を含まない床構造にも適用できるものである。 In addition, although each said Example is a floor structure containing a heating panel and a heat insulating material layer, this invention is applicable also to the floor structure which does not contain a heating panel and a heat insulating material layer.

また、前記各実施例は床基礎部２７がＡＬＣ版により構成されている場合であるが、本発明は床基礎部がＡＬＣ版以外のもので構成されている場合にも適用できるものである。 In addition, each of the above embodiments is a case where the floor foundation portion 27 is made of an ALC plate, but the present invention can also be applied to a case where the floor foundation portion is made of a material other than the ALC plate.

また、前記各実施例においては、床構成材支持具１を床基礎部２７に直接取り付けているが、本発明においては、床構成材支持具を床基礎部に取り付けられた部材に取り付けることにより、床構成材支持具を間接的に床基礎部に取り付けてもよい。 Moreover, in each said Example, although the floor component material support tool 1 is directly attached to the floor foundation part 27, in this invention, by attaching a floor component material support tool to the member attached to the floor foundation part. The floor constituent material support may be indirectly attached to the floor foundation.

また、軸体部の軸方向貫通穴に挿通するねじまたは釘は、必ずしもコンクリート用でなくてもよい。 Moreover, the screw or nail inserted through the axial through hole of the shaft body portion does not necessarily have to be for concrete.

さらに、請求項１および６に記載の発明においては、床構成材支持具を床基礎部に取り付けず、床基礎部上に単に載置するだけでもよい。 Furthermore, in invention of Claim 1 and 6, you may just mount on a floor foundation part, without attaching a floor component support tool to a floor foundation part.

また、前記各実施例においては、雌ねじ部材側工具嵌合部１６、ねじ軸側工具嵌合部９および水平方向突出部１５の横断面形状をそれぞれ六角形としているが、これらの横断面形状は四角形等の他の非円形状としてもよい。また、ねじ軸７を筒状としないで中実とする場合は、ねじ軸側工具嵌合部をドライバーを嵌合する十字穴状やマイナス溝状等としてもよい。また、水平方向突出部は、工具嵌合部としての機能させる必要がない場合は、横断面円形状としてもよい。 Moreover, in each said Example, although the cross-sectional shape of the internal thread member side tool fitting part 16, the screw shaft side tool fitting part 9, and the horizontal direction protrusion part 15 is each hexagon, these cross-sectional shapes are Other non-circular shapes such as a rectangle may be used. When the screw shaft 7 is solid without being cylindrical, the screw shaft side tool fitting portion may have a cross hole shape, a minus groove shape or the like for fitting a screwdriver. Moreover, the horizontal direction protrusion part is good also as a cross-sectional circular shape, when it is not necessary to make it function as a tool fitting part.

以上のように本発明による床構造および床構成材支持具は、建築物において床構成材の高さ調整を可能に支持する床構造および床構成材支持具として有用である。 As described above, the floor structure and the floor component support according to the present invention are useful as a floor structure and a floor component support that supports the height of the floor component in a building.

１床構成材支持具
２軸体部
３昇降部
４ゴム弾性キャップ
５滑り支承板
６ベース部
７ねじ軸
８雄ねじ部
９ねじ軸側工具嵌合部
１０軸体部２の軸方向貫通穴
１１雌ねじ部材
１２床構成材載置部
１３皿ばね
１４筒状部
１５水平方向突出部
１６雌ねじ部材側工具嵌合部
１７雌ねじ部材１１の軸方向貫通穴
１８雌ねじ部
１９結合穴
２１筒状部１４のかしめ変形部
２４下地板（床構成材）
２７床基礎部
２８コンクリート用ねじまたは釘
２９床暖房パネル（床構成材）
３０床仕上げ材（床構成材）
３１接着剤
DESCRIPTION OF SYMBOLS 1 Floor component support tool 2 Shaft body part 3 Elevating part 4 Rubber elastic cap 5 Sliding support plate 6 Base part 7 Screw shaft 8 Male screw part 9 Screw shaft side tool fitting part 10 Axial through-hole of shaft body part 11 Female screw Member 12 Floor component placing part 13 Belleville spring 14 Tubular part 15 Horizontal protrusion 16 Female thread member side tool fitting part 17 Axial through hole 18 of female thread member 11 Female thread part 19 Coupling hole 21 Caulking of tubular part 14 Deformation part 24 Ground plate (floor component)
27 Floor foundation 28 Screws or nails for concrete 29 Floor heating panel (floor component)
30 Floor finishing materials (floor components)
31 Adhesive

Claims

In the floor composition material support that supports the floor composition material on the floor foundation of the building,
It has a shaft body part and an elevating part,
The shaft body portion includes a screw shaft that rises in the vertical direction, a male screw portion that is provided on the outer periphery of the screw shaft, and a screw shaft side tool that is formed on the upper end side of the screw shaft and that rotates the screw shaft. And has a fitting portion, and is adapted to be placed on the floor foundation portion,
The elevating part has a female screw member, a floor component placing part, and a disc spring,
The female screw member includes a cylindrical portion provided in the vertical direction, a female screw member side tool fitting portion formed on the inner periphery of the cylindrical portion for rotating the female screw member, and the cylindrical portion. A horizontal projecting portion projecting in a horizontal direction from the cylindrical portion provided below, an axial through hole penetrating in the axial direction including a hollow portion of the cylindrical portion as a part thereof, and the axial penetration Provided on the inner periphery of the hole, and having a female screw part screwed into the male screw part,
The floor component placing part has a coupling hole, and the tubular part is passed through the coupling hole, and the floor constituent material is placed thereon,
The disc spring is penetrated by the cylindrical part in a state where it is overlaid on the floor component placing part,
The cylindrical portion is deformed by being compressed in the axial direction so that a part of the peripheral wall spreads outwardly in a flange shape over the entire circumference, thereby the floor component material placing portion and the disc spring Is caulked so as to be sandwiched between the caulking deformed portion of the cylindrical portion and the horizontal protruding portion, but relative rotation around the axis of the female screw member with respect to the floor component placing portion is possible The disc spring is compressed and deformed, and the restoring force of the disc spring generates a frictional force between the female screw member and the floor constituent material placing portion, and the floor constituent material placing portion A braking force is applied to the relative rotation of the female screw member with respect to
When the shaft body portion is rotated or the female screw member is rotated, the female screw member moves in the vertical direction with respect to the screw shaft, and the height of the floor constituent material with respect to the floor foundation portion is adjusted. Floor component support that is designed to be used.

The screw shaft has a cylindrical shape, and the screw shaft side tool fitting portion is formed on the inner periphery of the screw shaft,
2. The shaft body portion includes an axial through hole penetrating in an axial direction including a hollow portion of the screw shaft, and the axial through hole communicates with the axial through hole of the female screw member. The floor constituent material support according to the description.

The floor structure material support according to claim 1 or 2, wherein the shaft body portion has a base portion placed on the floor base portion, and the screw shaft rises vertically from the base portion.

A rubber elastic cap made of a material having rubber elasticity, and smoothly rotating the base portion relative to the rubber elastic cap interposed between the bottom portion of the rubber elastic cap and the base portion. The floor constituent material support according to claim 3, further comprising a sliding support plate.

The floor structure according to any one of claims 1 to 4, wherein the horizontal protruding portion has a non-circular cross-sectional shape and can be fitted with a tool for rotating the female screw member. Material support.

In a floor structure comprising a floor constituent material support placed on the floor foundation of a building, and a floor constituent material attached to the floor constituent material support,
The floor constituent material support has a shaft body part and an elevating part,
The shaft body portion includes a screw shaft that rises in the vertical direction, a male screw portion that is provided on the outer periphery of the screw shaft, and a screw shaft side tool that is formed on the upper end side of the screw shaft and that rotates the screw shaft. And has a fitting portion, and is adapted to be placed on the floor foundation portion,
The elevating part has a female screw member, a floor component placing part, and a disc spring,
The female screw member includes a cylindrical portion provided in the vertical direction, a female screw member side tool fitting portion formed on the inner periphery of the cylindrical portion for rotating the female screw member, and the cylindrical portion. A horizontal projecting portion projecting in a horizontal direction from the cylindrical portion provided below, an axial through hole penetrating in the axial direction including a hollow portion of the cylindrical portion as a part thereof, and the axial penetration Provided on the inner periphery of the hole, and having a female screw part screwed into the male screw part,
The floor component placing part has a coupling hole, and the tubular part is passed through the coupling hole, and the floor constituent material is placed,
The disc spring is penetrated by the cylindrical part in a state where it is overlaid on the floor component placing part,
The cylindrical portion is deformed by being compressed in the axial direction so that a part of the peripheral wall spreads outwardly in a flange shape over the entire circumference, thereby the floor component material placing portion and the disc spring Is caulked so as to be sandwiched between the caulking deformed portion of the cylindrical portion and the horizontal protruding portion, but relative rotation around the axis of the female screw member with respect to the floor component placing portion is possible The disc spring is compressed and deformed, and the restoring force of the disc spring generates a frictional force between the female screw member and the floor constituent material placing portion, and the floor constituent material placing portion A braking force is applied to the relative rotation of the female screw member with respect to
When the shaft body portion is rotated or the female screw member is rotated, the female screw member moves in the vertical direction with respect to the screw shaft, and the height of the floor constituent material with respect to the floor foundation portion is adjusted. The floor structure is designed to be

The screw shaft of the floor constituent material support has a cylindrical shape, and the screw shaft side tool fitting portion is formed on the inner periphery of the screw shaft,
The shaft body portion includes an axial through hole penetrating in the axial direction including a hollow portion of the screw shaft, and the axial through hole communicates with the axial through hole of the female screw member. The floor structure according to claim 6, wherein the shaft body part is attached to the floor foundation part by a screw or a nail inserted through an axial through hole of the body part.

The floor according to claim 6 or 7, wherein the shaft body portion of the floor constituent material support has a base portion placed on the floor base portion, and the screw shaft rises vertically from the base portion. Construction.

The floor component material support member is made of a material having rubber elasticity for accommodating the base portion, so that the rubber elastic cap and the rubber elastic cap interposed between the bottom portion of the rubber elastic cap and the base portion are supported. The floor structure according to claim 8, further comprising a sliding support plate that facilitates rotation of the base portion.

The screw shaft of the floor constituent material support has a cylindrical shape, and the screw shaft side tool fitting portion is formed on the inner periphery of the screw shaft,
The shaft body portion includes an axial through hole penetrating in the axial direction including a hollow portion of the screw shaft, and the axial through hole communicates with the axial through hole of the female screw member, and the female screw The shaft body part is bonded to the floor foundation part by an adhesive supplied between the shaft body part and the floor foundation part via the axial through hole of the member and the axial through hole of the shaft body part. The floor structure according to claim 6, wherein the floor structure is attached.

The horizontal projection of the floor constituent material support has a non-circular cross section, and can be fitted with a tool for rotating the female screw member. The floor structure according to item 1.