JP6954758B2 - Floor panel fixture - Google Patents

Floor panel fixture Download PDF

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JP6954758B2
JP6954758B2 JP2017081771A JP2017081771A JP6954758B2 JP 6954758 B2 JP6954758 B2 JP 6954758B2 JP 2017081771 A JP2017081771 A JP 2017081771A JP 2017081771 A JP2017081771 A JP 2017081771A JP 6954758 B2 JP6954758 B2 JP 6954758B2
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upper plate
plate
floor panel
nut
recess
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JP2018178597A (en
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尚利 安田
尚利 安田
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Ahresty Corp
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Ahresty Corp
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Description

本発明は床パネル固定具に関し、特に二重床を構築する床パネルを固定する床パネル固定具に関するものである。 The present invention relates to a floor panel fixture, and more particularly to a floor panel fixture that fixes a floor panel for constructing a double floor.

基礎床と床パネルとの間に一定の高さの空間を設けた二重床は、クリーンルーム、コンピュータルーム、一般のオフィス等で使用される。床パネルをボルトで固定する床パネル固定具として、例えば特許文献1及び2に開示されるものが知られている。特許文献1に開示される床パネル固定具は、床パネルが載置される台と、ナットが配置されたカバーが取り付けられる支持部材と、支持部材に対して高さ方向に間隔をあけて台を支持する支持棒と、を備えている。特許文献2に開示される床パネル固定具は、床パネルが載置されるアルミニウム合金の鋳造品である台座に、ナットが配置される裏蓋がビスで取り付けられている。 A double floor having a space of a certain height between the foundation floor and the floor panel is used in a clean room, a computer room, a general office, and the like. As a floor panel fixture for fixing a floor panel with bolts, for example, those disclosed in Patent Documents 1 and 2 are known. The floor panel fixture disclosed in Patent Document 1 includes a base on which the floor panel is placed, a support member on which a cover on which a nut is arranged is attached, and a base at intervals in the height direction with respect to the support member. It is equipped with a support rod to support. In the floor panel fixture disclosed in Patent Document 2, a back cover on which a nut is arranged is attached with a screw to a pedestal which is a cast product of an aluminum alloy on which the floor panel is placed.

特開2007−177509号公報Japanese Unexamined Patent Publication No. 2007-177509 特許第4171266号公報Japanese Patent No. 4171266

しかしながら特許文献1に開示される技術は、カバー及び支持部材と台とが支持棒で連結された構造なので、部品点数が多く、さらに全体の体積が大きくなるという問題点がある。特許文献2に開示される技術では、台座を構成するアルミニウム合金は単位質量当たりの強度は高いが密度が小さいので、強度を確保するために台座の体積が大きくなるという問題点がある。 However, the technique disclosed in Patent Document 1 has a problem that the cover, the support member, and the base are connected by a support rod, so that the number of parts is large and the total volume is large. In the technique disclosed in Patent Document 2, since the aluminum alloy constituting the pedestal has high strength per unit mass but low density, there is a problem that the volume of the pedestal is increased in order to secure the strength.

本発明は上述した問題点を解決するためになされたものであり、部品点数を少なくしつつ小型で強度の高い床パネル固定具を提供することを目的とする。 The present invention has been made to solve the above-mentioned problems, and an object of the present invention is to provide a compact and high-strength floor panel fixture while reducing the number of parts.

この目的を達成するために本発明の床パネル固定具は、支持脚に固定されると共に床パネルをボルトで固定するものであり、床パネルが上面に配置される鋼製の上板と、上板に固定され上板の下面に対向する下板と、下板と上板との間に配置されると共にボルトが締結されるナットと、を備えている。上板は、下面の一部がナットの外形よりも大きく凹む凹部と、凹部に形成された係合部と、凹部に対応する位置に上面から突出する凸部と、凸部および凹部を上板の板厚方向に貫通すると共にナットのめねじの内径よりも内径が大きい貫通孔と、を備えている。ナットは凹部に少なくとも一部が収容され、係合部はボルトの締結時にナットの回転を阻止する。 In order to achieve this object, the floor panel fixture of the present invention is fixed to a support leg and bolted to the floor panel, and has a steel upper plate on which the floor panel is arranged on the upper surface and an upper plate. It includes a lower plate that is fixed to the plate and faces the lower surface of the upper plate, and a nut that is arranged between the lower plate and the upper plate and to which bolts are fastened. The upper plate has a concave portion in which a part of the lower surface is recessed larger than the outer shape of the nut, an engaging portion formed in the concave portion, a convex portion protruding from the upper surface at a position corresponding to the concave portion, and a convex portion and a concave portion. It is provided with a through hole that penetrates in the plate thickness direction and has an inner diameter larger than the inner diameter of the female screw of the nut. At least a part of the nut is housed in the recess, and the engaging portion prevents the nut from rotating when the bolt is fastened.

請求項1記載の床パネル固定具によれば、床パネルが上面に配置される鋼製の上板に、上板の下面の一部がナットの外形よりも大きく凹む凹部が形成されると共に、凹部に係合部が形成される。凹部に対応する位置に上面から凸部が突出する。ナットは上板の下面に対向する下板に配置され、凹部に少なくとも一部が収容される。下板は上板に固定されるので、部品点数を少なくできる。凸部および凹部を上板の板厚方向に貫通する貫通孔は、ナットのめねじの内径よりも内径が大きいので、ボルトを貫通孔に挿入してナットに締結できる。ボルトの締結時に係合部はナットの回転を阻止する。鋼製の上板は、同じ質量のアルミニウム合金に比べて強度が高いので、小さくても強度を高くできる。
上板は、上面と下面とを連絡する側面の一部に上板の板厚方向の全長に亘って溝部が延びる。下板の縁に連接される係止片の第1部は、溝部に沿って幅方向に塑性変形するので、第1部の幅方向に下板を拘束する。第1部に連接される係止片の第2部は、上板の上面と溝部とが交わる角で折り曲げられて上面に重なるので、上板の板厚方向に下板を拘束する。これにより、下板を上板に簡易に固定できる。
According to the floor panel fixture according to claim 1, the steel upper plate on which the floor panel is arranged is formed with a recess in which a part of the lower surface of the upper plate is recessed larger than the outer shape of the nut. An engaging portion is formed in the recess. A convex portion protrudes from the upper surface at a position corresponding to the concave portion. The nut is arranged on the lower plate facing the lower surface of the upper plate, and at least a part of the nut is housed in the recess. Since the lower plate is fixed to the upper plate, the number of parts can be reduced. Since the through hole that penetrates the convex portion and the concave portion in the plate thickness direction of the upper plate has an inner diameter larger than the inner diameter of the female screw of the nut, the bolt can be inserted into the through hole and fastened to the nut. When tightening the bolt, the engaging part prevents the nut from rotating. Since the steel top plate has higher strength than the aluminum alloy having the same mass, the strength can be increased even if it is small.
The upper plate has a groove extending over the entire length in the plate thickness direction of the upper plate on a part of the side surface connecting the upper surface and the lower surface. Since the first portion of the locking piece connected to the edge of the lower plate is plastically deformed in the width direction along the groove portion, the lower plate is restrained in the width direction of the first portion. The second part of the locking piece connected to the first part is bent at the angle where the upper surface of the upper plate and the groove portion intersect and overlaps the upper surface, so that the lower plate is restrained in the plate thickness direction of the upper plate. As a result, the lower plate can be easily fixed to the upper plate.

請求項2記載の床パネル固定具によれば、上板は、角および凸部とそれぞれ間隔をあけて設けられた突起が上面から突出する。第2部は角と突起との間に配置される。第2部の幅は、第1部の幅に比べて狭いので、請求項1の効果に加え、第1部の幅方向に下板を拘束する力を確保しつつ、床パネルが配置される上板の上面の領域を第2部が狭くしないようにできる。
請求項3記載の床パネル固定具によれば、下板は、ナットが配置された部位の周囲の一部が上板へ向けて折り曲げられた壁部を備える。これにより、ナットにボルトが締結される前の施工作業中などに、下板が変形して下板と上板との間隔が広がっても、壁部によってナットの脱落を防ぐことができる。
請求項記載の床パネル固定具によれば、凸部は、プレス加工による凹部の形成に伴い上面から突出する。よって、請求項1から3のいずれかの効果に加え、切削等によって凹部および凸部を形成する場合に比べて、凹部および凸部を短時間で形成できる。
According to the floor panel fixture according to claim 2, the upper plate has protrusions provided at intervals from the corners and the protrusions, respectively, protruding from the upper surface. The second part is placed between the corners and the protrusions. Since the width of the second part is narrower than the width of the first part, in addition to the effect of claim 1, the floor panel is arranged while ensuring the force to restrain the lower plate in the width direction of the first part. The area on the upper surface of the upper plate can be prevented from being narrowed by the second part.
According to the floor panel fixture according to claim 3, the lower plate includes a wall portion in which a part around the portion where the nut is arranged is bent toward the upper plate. As a result, even if the lower plate is deformed and the distance between the lower plate and the upper plate is widened during the construction work before the bolt is fastened to the nut, the wall portion can prevent the nut from falling off.
According to the floor panel fixture according to claim 4 , the convex portion protrudes from the upper surface as the concave portion is formed by press working. Therefore, in addition to the effect of any one of claims 1 to 3, the concave portion and the convex portion can be formed in a short time as compared with the case where the concave portion and the convex portion are formed by cutting or the like.

請求項記載の床パネル固定具によれば、下板を貫通する鋼製の筒体が、上板の下面に溶接される。支持脚に螺合する鋼製のめねじが、筒体の内周に形成されるので、請求項1から4のいずれかの効果に加え、高い引抜強度を確保できる。 According to the floor panel fixture according to claim 5, a steel cylinder penetrating the lower plate is welded to the lower surface of the upper plate. Since a steel female screw screwed to the support leg is formed on the inner circumference of the cylinder , in addition to the effect according to any one of claims 1 to 4, high pull-out strength can be ensured.

本発明の一実施の形態における床パネル固定具の平面図である。It is a top view of the floor panel fixture in one Embodiment of this invention. 床パネル固定具の側面図である。It is a side view of the floor panel fixture. 床パネル固定具の底面図である。It is a bottom view of the floor panel fixture. 図1のIV−IV線における床パネル固定具の断面図である。It is sectional drawing of the floor panel fixture in line IV-IV of FIG. 床パネル固定具の分解立体図である。It is an exploded three-dimensional view of a floor panel fixture. 床パネル固定具の使用状態を示す斜視図である。It is a perspective view which shows the use state of the floor panel fixture.

以下、本発明の好ましい実施の形態について添付図面を参照して説明する。図1は本発明の一実施の形態における床パネル固定具10の平面図であり、図2は床パネル固定具10の側面図である。図3は床パネル固定具10の底面図であり、図4は図1のIV−IV線における床パネル固定具10の断面図である。図5は床パネル固定具10の分解立体図であり、図6は床パネル固定具10の使用状態を示す斜視図である。理解を容易にするため、図6では、床パネル固定具10に4枚配置される床パネル72のうち2枚が図示されている。 Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a plan view of the floor panel fixture 10 according to the embodiment of the present invention, and FIG. 2 is a side view of the floor panel fixture 10. FIG. 3 is a bottom view of the floor panel fixture 10, and FIG. 4 is a cross-sectional view of the floor panel fixture 10 taken along the line IV-IV of FIG. FIG. 5 is an exploded three-dimensional view of the floor panel fixture 10, and FIG. 6 is a perspective view showing a usage state of the floor panel fixture 10. For ease of understanding, FIG. 6 shows two of the four floor panels 72 arranged on the floor panel fixture 10.

図6に示すように床パネル固定具10は、基礎床(図示せず)に固定された支持脚70に固定される。支持脚70に固定された床パネル固定具10は、床パネル72の角が突き合わされる位置、即ち床パネル72の四隅に配置される。床パネル72は、角形の基板73と、基板73の裏面に突出するリブ74と、を備え、基板73及びリブ74がアルミニウム合金によって一体成形されている。リブ74が床パネル固定具10に載置された状態で、基板73を貫通するボルト75が床パネル固定具10に締結され、床パネル72は床パネル固定具10に固定される。 As shown in FIG. 6, the floor panel fixture 10 is fixed to the support legs 70 fixed to the foundation floor (not shown). The floor panel fixtures 10 fixed to the support legs 70 are arranged at positions where the corners of the floor panel 72 are abutted, that is, at the four corners of the floor panel 72. The floor panel 72 includes a square substrate 73 and ribs 74 protruding from the back surface of the substrate 73, and the substrate 73 and the ribs 74 are integrally molded with an aluminum alloy. With the rib 74 mounted on the floor panel fixture 10, a bolt 75 penetrating the substrate 73 is fastened to the floor panel fixture 10, and the floor panel 72 is fixed to the floor panel fixture 10.

床パネル固定具10は、上板20と、上板20に固定される下板40と、上板20と下板40との間に配置されるナット50(図5参照)と、上板20に固定される筒体60と、を備えている。 The floor panel fixture 10 includes an upper plate 20, a lower plate 40 fixed to the upper plate 20, a nut 50 (see FIG. 5) arranged between the upper plate 20 and the lower plate 40, and an upper plate 20. It is provided with a tubular body 60 fixed to the.

図1に示すように上板20は、熱間圧延鋼板等の鋼製の方形状の板材である。本実施の形態では、上板20は金属プレス加工品である。上板20は、床パネル72(図6参照)が配置される上面21と、上面21に連絡する側面22と、側面22に連絡する下面23(図2参照)とを備えている。上板20は、上板20の4つの角の近くに凹部24及び凸部26がそれぞれ形成される。本実施の形態では、凹部24及び凸部26は平面視が方形状に形成されている。 As shown in FIG. 1, the upper plate 20 is a steel square plate material such as a hot-rolled steel plate. In the present embodiment, the upper plate 20 is a metal stamped product. The upper plate 20 includes an upper surface 21 on which the floor panel 72 (see FIG. 6) is arranged, a side surface 22 communicating with the upper surface 21, and a lower surface 23 (see FIG. 2) communicating with the side surface 22. The upper plate 20 has a concave portion 24 and a convex portion 26 formed near the four corners of the upper plate 20, respectively. In the present embodiment, the concave portion 24 and the convex portion 26 are formed in a rectangular shape in a plan view.

図4に示すように凹部24は、下面23の一部がナット50の外形よりも大きく凹む部位である。凹部24は、プレス加工により上板20の下面23に形成される。プレス加工による凹部24の形成に伴い、上板20が塑性変形して、凸部26が上板20の上面21から突出する。凹部24はボルト75(図6参照)が締結されるナット50の上部を収容する。凸部26は、上板20の上面21に載置されるリブ74(図6参照)の位置決めをする。 As shown in FIG. 4, the recess 24 is a portion where a part of the lower surface 23 is recessed larger than the outer shape of the nut 50. The recess 24 is formed on the lower surface 23 of the upper plate 20 by press working. With the formation of the concave portion 24 by the press working, the upper plate 20 is plastically deformed, and the convex portion 26 protrudes from the upper surface 21 of the upper plate 20. The recess 24 accommodates the upper portion of the nut 50 to which the bolt 75 (see FIG. 6) is fastened. The convex portion 26 positions the rib 74 (see FIG. 6) placed on the upper surface 21 of the upper plate 20.

上板20には、凸部26及び凹部24を上板20の板厚方向に貫通する貫通孔27が、プレス加工や切削等によって形成される。貫通孔27の内径は、ナット50のめねじ51の内径よりも大きい。貫通孔27は、ボルト75(図6参照)が挿通される平面視が円形の孔である。貫通孔27は、下面23から上面21に向けてテーパ状に次第に拡径するので、上面21側からボルト75を挿通し易くできる。 In the upper plate 20, a through hole 27 that penetrates the convex portion 26 and the concave portion 24 in the plate thickness direction of the upper plate 20 is formed by press working, cutting, or the like. The inner diameter of the through hole 27 is larger than the inner diameter of the female screw 51 of the nut 50. The through hole 27 is a hole having a circular plan view through which the bolt 75 (see FIG. 6) is inserted. Since the through hole 27 gradually expands in diameter from the lower surface 23 toward the upper surface 21, the bolt 75 can be easily inserted from the upper surface 21 side.

図1に戻って説明する。本実施の形態では、ナット50は鋼製の四角ナットであり、ナット50の外形は、凹部24よりも少し小さめに設定される。凹部24の四角形の隅は、ナット50の回転を阻止する係合部25である。 It will be described back to FIG. In the present embodiment, the nut 50 is a steel square nut, and the outer shape of the nut 50 is set to be slightly smaller than the recess 24. The square corner of the recess 24 is an engaging portion 25 that prevents the nut 50 from rotating.

上板20には、上板20の板厚方向に延びる溝部28が、4つの側面22の中央にそれぞれ形成されている。溝部28は横断面が円弧状に形成される。上板20の上面21には、溝部28の近傍であって凸部26同士の間に、横断面が円形状の突起31が形成されている。突起31は、プレス加工によって上板20の下面23の4か所に窪み30が形成されるのに伴い、上板20が塑性変形して、上板20の上面21の4か所から突出する。突起31は、凸部26と共に、上板20の上面21に載置されるリブ74を位置決めする。 A groove 28 extending in the plate thickness direction of the upper plate 20 is formed in the upper plate 20 at the center of each of the four side surfaces 22. The groove 28 has an arcuate cross section. On the upper surface 21 of the upper plate 20, a protrusion 31 having a circular cross section is formed between the convex portions 26 in the vicinity of the groove portion 28. The protrusions 31 are plastically deformed as the recesses 30 are formed at four locations on the lower surface 23 of the upper plate 20 by press working, and the protrusions 31 project from the four locations on the upper surface 21 of the upper plate 20. .. The protrusion 31 positions the rib 74 mounted on the upper surface 21 of the upper plate 20 together with the convex portion 26.

上板20の中央には、上板20を板厚方向に貫通する中央孔32が形成される。上板20の上面21には、中央孔32と4つの突起31との間に、中央孔32と突起31とを直線で結ぶマーク33が形成されている。マーク33は、上面21の4つの辺に垂直な直線状の4本の溝である。上面21はマーク33によって4つに区画される。作業者は、マーク33を目印にして、4枚の床パネル72(図6参照)の角を上板20に配置できる。 At the center of the upper plate 20, a central hole 32 that penetrates the upper plate 20 in the plate thickness direction is formed. On the upper surface 21 of the upper plate 20, a mark 33 is formed between the central hole 32 and the four protrusions 31 to connect the central hole 32 and the protrusion 31 with a straight line. The mark 33 is four linear grooves perpendicular to the four sides of the upper surface 21. The upper surface 21 is divided into four by the mark 33. The operator can arrange the corners of the four floor panels 72 (see FIG. 6) on the upper plate 20 by using the mark 33 as a mark.

上板20の上面21には、中央孔32と4つの凸部との間に、下面23に向かって陥没する陥没部34が形成されている。陥没部34はプレス加工によって上面21の4か所に形成される。プレス加工による陥没部34の形成に伴い、上板20が塑性変形して、***部35(図3参照)が上板20の下面23の4か所から突出する。 On the upper surface 21 of the upper plate 20, a recessed portion 34 that is recessed toward the lower surface 23 is formed between the central hole 32 and the four convex portions. The depressed portions 34 are formed at four locations on the upper surface 21 by press working. With the formation of the depressed portion 34 by the press working, the upper plate 20 is plastically deformed, and the raised portion 35 (see FIG. 3) protrudes from four places on the lower surface 23 of the upper plate 20.

図2に示すように、上板20の下面23に対向する下板40は、上板20に固定されている。上板20と下板40との間にナット50が配置される。下板40は、ステンレス鋼等の金属製の略方形状の板材である。下板40は、上板20の下部にナット50を支持するための部材なので、下板40の強度を上板20の強度より低くできる。その結果、下板40の板厚を上板20の板厚よりも薄くできるので、床パネル固定具10の質量が過大にならないようにできる。 As shown in FIG. 2, the lower plate 40 facing the lower surface 23 of the upper plate 20 is fixed to the upper plate 20. A nut 50 is arranged between the upper plate 20 and the lower plate 40. The lower plate 40 is a substantially rectangular plate material made of metal such as stainless steel. Since the lower plate 40 is a member for supporting the nut 50 under the upper plate 20, the strength of the lower plate 40 can be made lower than the strength of the upper plate 20. As a result, the thickness of the lower plate 40 can be made thinner than the thickness of the upper plate 20, so that the mass of the floor panel fixture 10 can be prevented from becoming excessive.

上板20に形成された貫通孔27に対応する下板40の4つの角の近くに、それぞれナット50が配置される。下板40に配置されたナット50は、上板20の凹部24にそれぞれ上部が収容される。ナット50が凹部24内を移動できるように、上板20の下面23と下板40との間隔が設定される。ナット50の上部が凹部24に収容されるので、上板20と下板40との間からナット50が脱落しないようにできる。 Nuts 50 are arranged near the four corners of the lower plate 40 corresponding to the through holes 27 formed in the upper plate 20. The upper portions of the nuts 50 arranged in the lower plate 40 are housed in the recesses 24 of the upper plate 20. The distance between the lower surface 23 of the upper plate 20 and the lower plate 40 is set so that the nut 50 can move in the recess 24. Since the upper portion of the nut 50 is housed in the recess 24, the nut 50 can be prevented from falling off between the upper plate 20 and the lower plate 40.

筒体60は、上板20の下面23に端部が溶接されている。筒体60は、円筒状の鋼製の部材であり、外周からプレス加工を施すことにより、外周の一部を内側へ凹ませた成形部61が形成されている。筒体60は、成形部61間に止めねじ63が貫通している。 The end of the tubular body 60 is welded to the lower surface 23 of the upper plate 20. The tubular body 60 is a cylindrical steel member, and a molded portion 61 having a part of the outer circumference recessed inward is formed by pressing from the outer circumference. A set screw 63 penetrates between the molded portions 61 of the tubular body 60.

図3に示すように下板40は、中央に円形の取付孔41が形成されている。取付孔41は、筒体60が挿入される部位である。下板40に取付孔41が形成されているので、下板40に邪魔されることなく、筒体60の端部を上板20に接合できる。筒体60は、上板20の下面23から突出する***部35の外周に接して、下面23に固定される。***部35は筒体60を固定する位置を規定する。 As shown in FIG. 3, the lower plate 40 has a circular mounting hole 41 formed in the center. The mounting hole 41 is a portion into which the tubular body 60 is inserted. Since the mounting hole 41 is formed in the lower plate 40, the end portion of the tubular body 60 can be joined to the upper plate 20 without being disturbed by the lower plate 40. The tubular body 60 is in contact with the outer periphery of the raised portion 35 protruding from the lower surface 23 of the upper plate 20 and is fixed to the lower surface 23. The raised portion 35 defines a position for fixing the tubular body 60.

筒体60の外周の複数か所(本実施の形態では3か所)を凹ませることにより、筒体60が塑性変形して、成形部61の内周が***する。***した成形部61にめねじ62が形成されている。支持脚70(図6参照)に形成されたおねじ71にめねじ62が螺合して、基礎床(図示せず)に対する床パネル固定具10の高さが調整される。おねじ71に対するめねじ62の位置を決めた後、止めねじ63を支持脚70に突き当てることにより、めねじ62の回り止めがされ、基礎床(図示せず)に対する床パネル固定具10の高さが決まる。 By denting a plurality of places (three places in the present embodiment) on the outer circumference of the cylinder body 60, the cylinder body 60 is plastically deformed and the inner circumference of the molded portion 61 is raised. A female screw 62 is formed on the raised molded portion 61. The female screw 62 is screwed into the male screw 71 formed on the support leg 70 (see FIG. 6) to adjust the height of the floor panel fixture 10 with respect to the foundation floor (not shown). After determining the position of the female screw 62 with respect to the male screw 71, the female screw 62 is prevented from rotating by abutting the set screw 63 against the support leg 70, and the floor panel fixture 10 with respect to the foundation floor (not shown) The height is decided.

図5に示すように下板40は、上板20に形成された貫通孔27に対応する下板40の4つの角の近くに、それぞれ円形の孔部42が形成されている。孔部42は、ナット50に螺合したボルト75(図6参照)の先端側が挿通される孔である。孔部42の内径は、めねじ51の内径よりも大きく、ナット50の外寸よりも小さい。孔部42からナット50が脱落しないようにするためである。 As shown in FIG. 5, in the lower plate 40, circular hole portions 42 are formed near the four corners of the lower plate 40 corresponding to the through holes 27 formed in the upper plate 20. The hole 42 is a hole through which the tip end side of the bolt 75 (see FIG. 6) screwed into the nut 50 is inserted. The inner diameter of the hole 42 is larger than the inner diameter of the female screw 51 and smaller than the outer dimension of the nut 50. This is to prevent the nut 50 from falling out of the hole 42.

ナット50は、ボルト75(図6参照)が噛み合うと、ボルト75と一緒に回転しようとする。しかし、凹部24(図1参照)に形成された係合部25にナット50の角(被係合部52)が係合するので、ボルト75の締結時にナット50の回り止めができる。 When the bolt 75 (see FIG. 6) is engaged, the nut 50 tries to rotate together with the bolt 75. However, since the corner of the nut 50 (engaged portion 52) engages with the engaging portion 25 formed in the recess 24 (see FIG. 1), the nut 50 can be prevented from rotating when the bolt 75 is fastened.

下板40は、4つの角を上板20に向けて折り曲げた第1壁部43と、4つの辺の中央を上板20に向けて折り曲げた第2壁部44と、が形成されている。第1壁部43は、下板40が変形して下板40と上板20との間隔が大きくなっても、凹部24から外れたナット50が下板40の角から脱落しないようにするための部位である。第2壁部44は、下板40が変形して下板40と上板20との間隔が大きくなっても、凹部24から外れたナット50が下板40の辺から脱落しないようにするための部位である。 The lower plate 40 is formed with a first wall portion 43 in which four corners are bent toward the upper plate 20, and a second wall portion 44 in which the centers of the four sides are bent toward the upper plate 20. .. The first wall portion 43 is provided so that the nut 50 detached from the recess 24 does not fall off from the corner of the lower plate 40 even if the lower plate 40 is deformed and the distance between the lower plate 40 and the upper plate 20 becomes large. Is the part of. The second wall portion 44 is provided so that the nut 50 detached from the recess 24 does not fall off from the side of the lower plate 40 even if the lower plate 40 is deformed and the distance between the lower plate 40 and the upper plate 20 becomes large. Is the part of.

第2壁部44は、上板20に近づくにつれて外寸が小さくなる半円錐台状に形成されている。これにより、下板40の各辺の中央の剛性を高くできる。第2壁部44の上部に頂部45が連接されている。頂部45は、半円状の平面が形成される部分であり、上板20の下面23に当接する。第2壁部44の高さによって、上板20と下板40との間隔が設定される。第2壁部44に連接された4つの頂部45が上板20の下面23に当接するので、上板20と下板40との間隔が保持される。頂部45の縁に係止片46が連接されている。係止片46は、上板20に下板40を固定するための部位である。 The second wall portion 44 is formed in a semi-conical cone shape whose outer dimensions become smaller as it approaches the upper plate 20. As a result, the rigidity at the center of each side of the lower plate 40 can be increased. The top 45 is connected to the upper part of the second wall 44. The top portion 45 is a portion where a semicircular flat surface is formed, and abuts on the lower surface 23 of the upper plate 20. The distance between the upper plate 20 and the lower plate 40 is set by the height of the second wall portion 44. Since the four tops 45 connected to the second wall 44 abut on the lower surface 23 of the upper plate 20, the distance between the upper plate 20 and the lower plate 40 is maintained. A locking piece 46 is connected to the edge of the top 45. The locking piece 46 is a portion for fixing the lower plate 40 to the upper plate 20.

図2に戻って説明する。係止片46は、上板20の溝部28(図1参照)の形状に沿って幅方向に塑性変形して湾曲する第1部47と、第1部47に連接されると共に溝部28と上面21との角29で折り曲げられて上面21に重なる第2部48と、を備えている。第1部47が上板20の溝部28に密着し、第2部48が上板20の上面21に密着する。第1部47は、横断面が円弧状の溝部28に沿って幅方向に塑性変形するので、溝部28の幅方向に下板40を拘束する。第2部48は上板20の上面21に密着するので、頂部45と第2部48との間で下板40を上板20の板厚方向に拘束する。よって、簡易かつ強固に下板40を上板20に固定できる。 It will be described back to FIG. The locking piece 46 is connected to the first portion 47, which is plastically deformed and curved in the width direction along the shape of the groove 28 (see FIG. 1) of the upper plate 20, and is connected to the first portion 47 and is connected to the groove 28 and the upper surface. A second portion 48, which is bent at a corner 29 with 21 and overlaps the upper surface 21, is provided. The first portion 47 is in close contact with the groove 28 of the upper plate 20, and the second portion 48 is in close contact with the upper surface 21 of the upper plate 20. Since the first portion 47 is plastically deformed in the width direction along the groove portion 28 having an arcuate cross section, the lower plate 40 is restrained in the width direction of the groove portion 28. Since the second portion 48 is in close contact with the upper surface 21 of the upper plate 20, the lower plate 40 is constrained between the top portion 45 and the second portion 48 in the plate thickness direction of the upper plate 20. Therefore, the lower plate 40 can be easily and firmly fixed to the upper plate 20.

図1に示すように第2部48は、溝部28の角29から突起31までの間に配置される。第2部48の幅Bは、第1部47の幅Aよりも狭く、突起31の外寸以下である。これにより、凸部26及び突起31に位置決めされたリブ74(床パネル72)が、第2部48に干渉しないようにできる。よって、床パネル72が配置される上板20の上面21の領域を第2部48が狭くしないようにできる。 As shown in FIG. 1, the second portion 48 is arranged between the corner 29 of the groove portion 28 and the protrusion 31. The width B of the second part 48 is narrower than the width A of the first part 47, and is equal to or less than the outer dimension of the protrusion 31. As a result, the rib 74 (floor panel 72) positioned on the convex portion 26 and the protrusion 31 can be prevented from interfering with the second portion 48. Therefore, the area of the upper surface 21 of the upper plate 20 on which the floor panel 72 is arranged can be prevented from being narrowed by the second portion 48.

床パネル固定具10の製造方法の一例を説明する。まず、プレス加工により上板20を成形する。上板20の貫通孔27は切削等により拡径する。上板20は必要に応じてめっきが施される。次いで、上板20の下面23に筒体60を接合する。上板20の下面23に形成された凹部24にナット50をそれぞれ入れた後、取付孔41に筒体60を挿入しながら、下板40の係止片46を、上板20の溝部28の位置に配置する。係止片46の第1部47を曲げて溝部28に密着させ、第2部48を上面21に沿って折り曲げることにより、下板40を上板20に固定する。これにより、床パネル固定具10が得られる。 An example of a method for manufacturing the floor panel fixture 10 will be described. First, the upper plate 20 is formed by press working. The through hole 27 of the upper plate 20 is enlarged in diameter by cutting or the like. The upper plate 20 is plated as needed. Next, the tubular body 60 is joined to the lower surface 23 of the upper plate 20. After inserting the nuts 50 into the recesses 24 formed in the lower surface 23 of the upper plate 20, while inserting the tubular body 60 into the mounting holes 41, the locking piece 46 of the lower plate 40 is inserted into the groove 28 of the upper plate 20. Place in position. The lower plate 40 is fixed to the upper plate 20 by bending the first portion 47 of the locking piece 46 to bring it into close contact with the groove portion 28 and bending the second portion 48 along the upper surface 21. As a result, the floor panel fixture 10 is obtained.

図6に示すように、支持脚70に固定された床パネル固定具10の上板20の上に、マーク33を目印にして床パネル72を配置した後、基板73にボルト75を貫通させる。上板20の貫通孔27はテーパ状に形成されているので、ボルト75を貫通孔27に挿通し易くできる。上板20と下板40との間に配置されたナット50は上板20の凹部24内を移動できるので、床パネル72の位置を気にすることなく、貫通孔27に挿入したボルト75をナット50に容易にかみ合わせることができる。 As shown in FIG. 6, the floor panel 72 is placed on the upper plate 20 of the floor panel fixture 10 fixed to the support legs 70 with the mark 33 as a mark, and then the bolt 75 is passed through the substrate 73. Since the through hole 27 of the upper plate 20 is formed in a tapered shape, the bolt 75 can be easily inserted into the through hole 27. Since the nut 50 arranged between the upper plate 20 and the lower plate 40 can move in the recess 24 of the upper plate 20, the bolt 75 inserted into the through hole 27 can be inserted without worrying about the position of the floor panel 72. It can be easily engaged with the nut 50.

ボルト75を締めることによるナット50の供回りは、凹部24の係合部25にナット50の被係合部52が係合して阻止される。ボルト75を締め込むとナット50が上板20に引き寄せられ、ボルト75及びナット50に軸力が作用する。鋼製の上板20は、同じ質量のアルミニウム合金に比べて強度が高いので、小さくても上板20の強度を高くできる。ナット50を支持する下板40は上板20に固定されているので、部品点数を少なくしつつ床パネル固定具10を小型化できると共に強度を高くできる。 The rotation of the nut 50 by tightening the bolt 75 is prevented by engaging the engaged portion 52 of the nut 50 with the engaging portion 25 of the recess 24. When the bolt 75 is tightened, the nut 50 is attracted to the upper plate 20, and an axial force acts on the bolt 75 and the nut 50. Since the steel upper plate 20 has higher strength than the aluminum alloy having the same mass, the strength of the upper plate 20 can be increased even if it is small. Since the lower plate 40 that supports the nut 50 is fixed to the upper plate 20, the floor panel fixture 10 can be miniaturized and strengthened while reducing the number of parts.

支持脚70固定される筒体60が上板20に接合されており、上板20を挟んでボルト75及びナット50に軸力が作用する。ボルト75が締め付けられたナット50は下板40から浮き上がるので、下板40に力はかからない。上板20及び上板20に溶接された筒体60はいずれも鋼製なので、高い引抜強度を確保できる。その結果、床パネル72の基板73に固定されたラックや機器(いずれも図示せず)が、地震等によって転倒するときに発生する引抜力に耐え得るようにできる。従って、床パネル固定具10は、背の高いラックや重量物が設置されるクリーンルームやコンピュータルーム等を構築する床パネル72を固定するのに特に適している。 The tubular body 60 to be fixed to the support leg 70 is joined to the upper plate 20, and an axial force acts on the bolt 75 and the nut 50 with the upper plate 20 sandwiched between them. Since the nut 50 to which the bolt 75 is tightened rises from the lower plate 40, no force is applied to the lower plate 40. Since the upper plate 20 and the tubular body 60 welded to the upper plate 20 are both made of steel, high pull-out strength can be ensured. As a result, the racks and devices (none of which are shown) fixed to the substrate 73 of the floor panel 72 can withstand the pulling force generated when the floor panel 72 falls over due to an earthquake or the like. Therefore, the floor panel fixture 10 is particularly suitable for fixing the floor panel 72 for constructing a clean room, a computer room, or the like in which a tall rack or a heavy object is installed.

床パネル固定具10は、支持脚70に螺合されるめねじ62が形成された筒体60及びナット50が鋼製なので、ねじ山の強度を高くできる。よって、筒体60のめねじ62及びナット50のめねじ51が潰れないようにできる。 In the floor panel fixture 10, since the tubular body 60 and the nut 50 on which the female screw 62 screwed to the support leg 70 is formed are made of steel, the strength of the screw thread can be increased. Therefore, the female screw 62 of the tubular body 60 and the female screw 51 of the nut 50 can be prevented from being crushed.

上板20は、凹部24及び凸部26がプレス加工によって形成されるので、切削等によって凹部24及び凸部26を形成する場合に比べて、凹部24及び凸部26を短時間で形成できる。また、切削による材料の無駄を抑制できる。 Since the concave portion 24 and the convex portion 26 are formed by pressing the upper plate 20, the concave portion 24 and the convex portion 26 can be formed in a shorter time than when the concave portion 24 and the convex portion 26 are formed by cutting or the like. In addition, waste of material due to cutting can be suppressed.

下板40は、ナット50が配置された部位の周囲の一部が上板20へ向けて折り曲げられた第1壁部43及び第2壁部44を備える。これにより、ナット50にボルト75が締結される前の施工作業中などに、下板40が変形して下板40と上板20との間隔が広がっても、第1壁部43及び第2壁部44によってナット50の脱落を防ぐことができる。 The lower plate 40 includes a first wall portion 43 and a second wall portion 44 in which a part around the portion where the nut 50 is arranged is bent toward the upper plate 20. As a result, even if the lower plate 40 is deformed and the distance between the lower plate 40 and the upper plate 20 is widened during the construction work before the bolt 75 is fastened to the nut 50, the first wall portion 43 and the second wall portion 43 and the second plate portion 20 are used. The wall portion 44 can prevent the nut 50 from falling off.

以上、実施の形態に基づき本発明を説明したが、本発明は上記実施の形態に何ら限定されるものではなく、本発明の趣旨を逸脱しない範囲内で種々の改良変形が可能であることは容易に推察できるものである。 Although the present invention has been described above based on the embodiments, the present invention is not limited to the above embodiments, and various improvements and modifications can be made without departing from the spirit of the present invention. It can be easily inferred.

実施の形態では、上板20が金属プレス加工品である場合について説明したが、必ずしもこれに限られるものではなく、切削等によって上板20の凹部24、凸部26等を形成することは当然可能である。 In the embodiment, the case where the upper plate 20 is a metal stamped product has been described, but the present invention is not necessarily limited to this, and it is natural that the concave portion 24, the convex portion 26, etc. of the upper plate 20 are formed by cutting or the like. It is possible.

実施の形態では、上板20の上面21に中央孔32、マーク33、陥没部34が形成される場合について説明したが、必ずしもこれに限られるものではない。これらの内の1つ以上を省略することは当然可能である。 In the embodiment, the case where the central hole 32, the mark 33, and the depressed portion 34 are formed on the upper surface 21 of the upper plate 20 has been described, but the present invention is not necessarily limited to this. Of course, it is possible to omit one or more of these.

実施の形態では、ナット50が四角ナットである場合について説明したが、必ずしもこれに限られるものではない。六角ナット等の他の形状のナットを採用することは当然可能である。凹部24の形状は、ナット50の形状に応じて適宜設定される。 In the embodiment, the case where the nut 50 is a square nut has been described, but the present invention is not necessarily limited to this. Of course, it is possible to use nuts of other shapes such as hexagon nuts. The shape of the recess 24 is appropriately set according to the shape of the nut 50.

10 床パネル固定具
20 上板
21 上面
22 側面
23 下面
24 凹部
25 係合部
26 凸部
27 貫通孔
28 溝部
29 角
31 突起
40 下板
43 第1壁部(壁部の一部)
44 第2壁部(壁部の一部)
46 係止片
47 第1部
48 第2部
50 ナット
51 めねじ
72 床パネル
75 ボルト
10 Floor panel fixture 20 Top plate 21 Top surface 22 Side surface 23 Bottom surface 24 Recession 25 Engagement part 26 Convex part 27 Through hole 28 Groove part 29 Square 31 Protrusion 40 Lower plate 43 First wall part (part of wall part)
44 Second wall (part of the wall)
46 Locking piece 47 Part 1 48 Part 2 50 Nut 51 Female screw 72 Floor panel 75 Bolt

Claims (5)

支持脚に固定されると共に床パネルをボルトで固定する床パネル固定具であって、
前記床パネルが上面に配置される鋼製の上板と、
前記上板に固定され前記上板の下面に対向する下板と、
前記下板と前記上板との間に配置されると共に前記ボルトが締結されるナットと、を備え
前記上板は、前記下面の一部が前記ナットの外形よりも大きく凹む凹部と、前記凹部に形成された係合部と、前記凹部に対応する位置に前記上面から突出する凸部と、前記凸部および前記凹部を前記上板の板厚方向に貫通すると共に前記ナットのめねじの内径よりも内径が大きい貫通孔と、前記上面と前記下面とを連絡する側面の一部に前記上板の板厚方向の全長に亘って延びる溝部と、を備え、
前記下板は、前記下板の縁に連接される第1部と、前記第1部に連接される第2部と、を有する係止片を備え、
前記ナットは、前記凹部に少なくとも一部が収容され、
前記係合部は、前記ボルトの締結時に前記ナットの回転を阻止し、
前記第1部は、前記溝部の幅方向に沿って塑性変形し、
前記第2部は、前記上板の前記上面と前記溝部とが交わる角で折り曲げられて前記上面に重なる床パネル固定具。
A floor panel fixture that is fixed to the support legs and bolts to the floor panel.
A steel top plate on which the floor panel is placed on the upper surface,
A lower plate fixed to the upper plate and facing the lower surface of the upper plate,
A nut which is arranged between the lower plate and the upper plate and to which the bolt is fastened is provided .
The upper plate includes a recess in which a part of the lower surface is recessed larger than the outer shape of the nut, an engaging portion formed in the recess, and a convex portion protruding from the upper surface at a position corresponding to the recess. The upper plate is formed on a part of a side surface that penetrates the convex portion and the concave portion in the plate thickness direction of the upper plate and has an inner diameter larger than the inner diameter of the female screw of the nut, and a side surface that connects the upper surface and the lower surface. With a groove extending over the entire length in the plate thickness direction of
The lower plate comprises a locking piece having a first portion articulated to the edge of the lower plate and a second portion articulated to the first portion.
At least a part of the nut is housed in the recess.
The engaging portion prevents the nut from rotating when the bolt is fastened .
The first part is plastically deformed along the width direction of the groove and is formed.
The second part is a floor panel fixture that is bent at an angle where the upper surface of the upper plate and the groove portion intersect and overlaps the upper surface.
前記上板は、前記角および前記凸部とそれぞれ間隔をあけて設けられると共に前記上面から突出する突起を備え、
前記第2部は、前記角と前記突起との間に配置され、
前記第2部の幅は、前記第1部の幅に比べて狭い請求項記載の床パネル固定具。
The upper plate is provided at a distance from the corner and the convex portion, and is provided with a protrusion protruding from the upper surface.
The second part is arranged between the corner and the protrusion.
The width of the second parts, the floor panel fixture narrow claim 1, wherein compared to the width of the first part.
支持脚に固定されると共に床パネルをボルトで固定する床パネル固定具であって、
前記床パネルが上面に配置される鋼製の上板と、
前記上板に固定され前記上板の下面に対向する下板と、
前記下板と前記上板との間に配置されると共に前記ボルトが締結されるナットと、を備え
前記上板は、前記下面の一部が前記ナットの外形よりも大きく凹む凹部と、前記凹部に形成された係合部と、前記凹部に対応する位置に前記上面から突出する凸部と、前記凸部および前記凹部を前記上板の板厚方向に貫通すると共に前記ナットのめねじの内径よりも内径が大きい貫通孔と、を備え、
前記下板は、前記ナットが配置された部位の周囲の一部が前記上板へ向けて折り曲げられた壁部を備え、
前記ナットは、前記凹部に少なくとも一部が収容され、
前記係合部は、前記ボルトの締結時に前記ナットの回転を阻止する床パネル固定具。
A floor panel fixture that is fixed to the support legs and bolts to the floor panel.
A steel top plate on which the floor panel is placed on the upper surface,
A lower plate fixed to the upper plate and facing the lower surface of the upper plate,
A nut which is arranged between the lower plate and the upper plate and to which the bolt is fastened is provided .
The upper plate includes a recess in which a part of the lower surface is recessed larger than the outer shape of the nut, an engaging portion formed in the recess, and a convex portion protruding from the upper surface at a position corresponding to the recess. It is provided with a through hole that penetrates the convex portion and the concave portion in the plate thickness direction of the upper plate and has an inner diameter larger than the inner diameter of the female screw of the nut.
The lower plate includes a wall portion in which a part around the portion where the nut is arranged is bent toward the upper plate.
At least a part of the nut is housed in the recess.
The engaging portion is a floor panel fixture that prevents the nut from rotating when the bolt is fastened.
前記凸部は、プレス加工による前記凹部の形成に伴い、前記上面から突出する請求項1から3のいずれかに記載の床パネル固定具。 The floor panel fixture according to any one of claims 1 to 3, wherein the convex portion projects from the upper surface as the concave portion is formed by press working. 前記上板の前記下面に溶接されると共に前記下板を貫通する鋼製の筒体と、
前記筒体の内周に形成され前記支持脚に螺合する鋼製のめねじと、を備える請求項1から4のいずれかに記載の床パネル固定具。
A steel cylinder that is welded to the lower surface of the upper plate and penetrates the lower plate.
The floor panel fixture according to any one of claims 1 to 4, further comprising a steel female screw formed on the inner circumference of the cylinder and screwed onto the support leg.
JP2017081771A 2017-04-18 2017-04-18 Floor panel fixture Active JP6954758B2 (en)

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