EP0529073A1 - Fussbodentafelständer - Google Patents

Fussbodentafelständer Download PDF

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Publication number
EP0529073A1
EP0529073A1 EP90907394A EP90907394A EP0529073A1 EP 0529073 A1 EP0529073 A1 EP 0529073A1 EP 90907394 A EP90907394 A EP 90907394A EP 90907394 A EP90907394 A EP 90907394A EP 0529073 A1 EP0529073 A1 EP 0529073A1
Authority
EP
European Patent Office
Prior art keywords
supporting
floor panels
stringers
stringer
floor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP90907394A
Other languages
English (en)
French (fr)
Other versions
EP0529073A4 (en
Inventor
Hiromasa Naka Corp. Haka
Takehiko Naka Technical Laboratory Okushima
Takao Naka Technical Laboratory Okumura
Tatsuo Naka Technical Laboratory Shoji
Tetsuo Naka Technical Laboratory Tobikawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Naka Corp
Original Assignee
Naka Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Naka Corp filed Critical Naka Corp
Publication of EP0529073A1 publication Critical patent/EP0529073A1/de
Publication of EP0529073A4 publication Critical patent/EP0529073A4/en
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/024—Sectional false floors, e.g. computer floors
    • E04F15/02447—Supporting structures
    • E04F15/02458—Framework supporting the panels

Definitions

  • the present invention relates to a structure for supporting floor panels wherein a plurality of supporting legs are disposed and secured on the base floor, adjacent supporting legs are connected by means of a stringer, opposite end portions of which are provided with the supporting element respectively, and floor panels made of steel sheets to be laid on the supporting structure are fastened by a panel retainer to the supporting structure.
  • a double floor structure or free access floor for defining a space for passing ventilating ducts and/or cables or wirings from electronic equipments to be installed thereon is well-known in the art.
  • the space is defined between the base floor such as concrete floor of the buildings and floor panels forming the free access floor.
  • supporting legs of independent type i.e., supporting legs separate from floor panels are used to secure an increased height of the space sufficient for passing therethrough a huge amount of cables from computers and their peripheral equipments.
  • a base plate provided at the lower end of each supporting leg is secured by means of adhesive on the base floor such as concrete floor of the building, a pedestal adjustable in its height is provided at the top end of a supporting column carried by the base plate, a stringer is mounted between adjacent pedestals, and floor panels are secured on the supporting legs by means of panel retainer.
  • the second problem involved in the prior art structure is that the bolts and nuts used as fastening means for securing the end of each stringer to the top end of the supporting leg makes the laying operation complicated. This is true of the wiring operation effected in later, since such operation requires engaging and/or disengaging of these nuts and bolts.
  • the third problem involved in the prior art structure is that the floor panels are secured not tightly on the supporting legs by means of such panel retainer as used in the prior art structure, so that uncomfortable noises can be produced by the walking on the floor panels, and the loosening between floor panels by the vibration to be applied thereto is sometimes led to the disengagement of the panels.
  • the fourth problem involved in the prior art structure is that the flange portion of each floor panel can be deformed due to the load applied thereto, since the floor panels are adapted to be supported at their flange portions directly through the stringers.
  • the fifth problem involved in the prior art structure is that the bottom surface of the panel retainer and the top surface of the floor panels on which the panel retainer is adapted to be urged can be damaged by the fastening operation, i.e., turning the retainer to displace it downwardly for fastening the floor panels to the supporting structure. This is because the panel retainer and the floor panels are in metal-to-metal contact. Further, rateral displacement between adjacent panels can be effected by the fastening operation, and sometimes the rattling of floor panels are founded because the floor panels are not fastened sufficiently.
  • the principle object of the present invention is to provide a structure for supporting floor panels which is easy in its construction, and the spacing between floor panels and base floor can be enlarged, and an antiseismic structure can be defined by the structure itself.
  • Another object of the present invention is to provide a structure for supporting floor panels in which stringers are fixedly secured under pressure detachably on the top ends of the adjacent supporting legs.
  • the stringers are used on the laying operation as a positioning jig.
  • the further object of the present invention is to provide a structure for supporting floor panels in which floor panels are rigidly and correctly secured together with the stringers to the supporting legs.
  • the additional object of the present invention is to provide a structure for supporting floor panels having a structure for avoiding the deformation of the flange portion of the floor panels.
  • the slide ring is adapted to be interposed between floor panels and the panel retainer.
  • a supporting structure for supporting floor panels having a plurality of supporting legs provided on a base floor, stringers each of which is disposed between adjacent supporting legs, comprising stringers each of which has a downwardly opening inverted U-shaped main body, and a pair of rims extending substantially horizontally outwardly from a longitudinal edge of each leg of "U" of the main body, each of said rims includes a raised portion extending vertically upwardly from the longitudinal edge of each rim, a pedestal for receiving stringers positioned and secured at the top end of each supporting leg, being adapted to accommodate ends of the stringers, said pedestal includes side walls to be tightly contacted with said raised portions of the stringers, nibs provided on the bottom wall of said pedestal for receiving stringers, a hole provided through a horizontally extending portion of each rim, each of said nib is adapted to be inserted into the hole, and protrusions provided on the side walls of said pedestals, a top edge of the raised portion of each rim of said stringer is adapted to be engaged there
  • a supporting structure for supporting floor panels wherein a plurality of supporting legs are provided on a base floor, a stringer is connected at each end to the top ends of adjacent supporting legs respectively, floor panels are adapted to be supported on the stringers, said floor panels and said stringers are secured on the supporting legs by means of a panel retainer, comprising a stringer includes a downwardly opening inverted U-shaped main body, and a pair of rims extending substantially horizontally outwardly from a longitudinal edge of each leg of "U" of the main body, each of said rims has a protrusion to be urged toward a pedestal of said supporting leg.
  • a supporting structure for supporting floor panels wherein a plurality of supporting legs are provided on a base floor, stringers each of which is disposed between adjacent supporting legs, supporting elements are disposed on the stringer so as to be spaced suitably with each other, and floor panels are supported through said supporting elements.
  • a supporting structure for supporting floor panels wherein a plurality of supporting legs are provided on a base floor, a stringer is connected at each end to the top ends of adjacent supporting legs respectively, floor panels are adapted to be supported on the stringers, said floor panels are secured on the supporting legs by means of a panel retainer, comprising; a slide ring formed of synthetic resinous material of self-lubricating feature is adapted to be interposed between the panel retainer and the floor panels.
  • a free access floor 1 comprising a structure 20 for supporting floor panels including a plurality of supporting legs 4 disposed on a base floor 3 so as to extend substantially vertically therefrom, stringers 15 bridged over two adjacent legs, and a plurality of floor panels 2 to be laid on and secured to the supporting structure.
  • Each supporting leg 4 is adapted to be positioned immediately beneath the junction defined by each corner 2a of four adjacent floor panels 2. When the supporting leg 4 is to be used at the wall of the floor, the supporting leg 4 is positioned immediately below the junction defined by each corner 2a of two adjacent floor panels 2.
  • the supporting leg 4 comprises a base plate 5 of generally square shape, a height adjusting mechanism 6 mounted on the base plate at the center thereof to extend upwardly therefrom, a supporting column 7 connected oscillatory to the height adjusting mechanism 6, and a pedestal 8 for receiving stringers connected integrally to the top of the column 7.
  • the base plate 5 is adapted to be secured at a predetermined position on the base floor 3 by means of adhesive or other means.
  • the height adjusting mechanism 6 comprises a threaded member 9 connected at its bottom to the center of the upper surface of the base plate 5 to extend therefrom, a flange portion 10 supporting the lower end of the supporting column 7, a height adjusting nut 11 to be threadingly engaged with the threaded member 9, and a clamping means 12 including a bolt and a nut.
  • the height adjusting nut 11 has a conical configuration reduced in its diameter toward the top thereof, so that the column 7 is play fitted at its lower end over the nut, and thus the column is supported oscillatory on the height adjusting mechanism 6.
  • the pedestal 8 for supporting stringers 15 has a generally cruciform configuration having outwardly extending four channels 8a for accommodating an end of each stringer.
  • Each channel 8a is formed to have an inverted U-shaped configuration including a bottom portion 8b and side walls 8c.
  • the bottom portion 8b is provided with two nibs 14 of conical shape to be engaged with holes 13 formed respectively through a horizontal portion 15c of each rim 15b of the stringer 15.
  • Each of the side wall 8c is provided with a protrusion 16 to be engaged with the raised portion 15d of the stringer 15.
  • a male member 18 with which the panel retainer 17 is adapted to be engaged is provided at the center of the pedestal 8.
  • the stringer is formed as a channel member of substantially U-shaped cross-section through the folding operation, a longitudinally extending main body 15a is formed at its central portion.
  • the main body 15a is provided with a pair of longitudinally extending rim 15b including a horizontal portion 15c extending horizontally from each leg of the "U" of the main body 15 and raised portion extending upwardly from an edge of the horizontal portion 15c.
  • An end portion of each horizontal portion 15c is provided at its bottom with a protrusion 26 through which the stringer is beared on the bottom 8b of the channel 8a of the pedestal 8 so as to deform elastically the rim 15b, when floor panels 2 are secured on the supporting structure by fastening the panel retainer 17.
  • the side walls of the main body 15a is further provided at positions with a plurality of engaging holes 15e for securing a supporting element 19 thereto.
  • Those designated by 15g are reinforcing ribs for stiffening the end portion of the stringer 15 for avoiding the buckling thereof due to the vertical load to be applied to the stringer 15 and floor panels 2, and those designated by 15h are ribs for guiding the supporting element 19.
  • the bearing surface 15f formed at the upper surface of the end portion of the main body 15a, on which flange portion 2b of floor panels 2 are to be rest, is formed for enhancing the accuracy of the height of the end of the stringer and the flatness thereof by pressing the stringer 15 after the folding of the stringer was completed.
  • the lower surface of each flange portion 2b of the floor panel 2 has already contact with the bearing surface 15f (see Fig.
  • each stringer 15 The raised portions 15d of each stringer 15 are urged to each side walls 8c of the channel 8a of the pedestal 8 respectively, and two nibs 14 provided on the bottom 8b of the channel 8a are fitted respectively into each hole 13 formed through the horizontal portion 15c of each rims 15b.
  • the protrusions 16 formed on the side walls 8c of the pedestal 8 for receiving stringers are engaged with the upper edge of the raised portion 15d of the stringer 15.
  • the longitudinal displacement of the stringer is limited by the engagement between the protrusion 16 and the upper edge of the raised portion 15d of the stringer 15, thus the axis of the stringer is correctly maintained, and the spacing between adjacent supporting legs can also be maintained in equal.
  • Urging the end portion of the stringer 15 downwardly on the bottom 8b of the stringer 8 joins the horizontal portion 15c of the rim 15b snugly on the bottom 8b of the stringer receiving pedestal 8, and maintains the fitting of the nibs 14 into the holes 13. Further, drawing of the stringer 15 off upwardly from the pedestal is avoided by the protrusion 16.
  • the positioning of the supporting legs 4 on the base floor can be effected easily by utilizing the above described stringer 15, since the stringer has as its function a positioning jig.
  • the stringer is adapted to be securedly clamped between the floor panels 2 and the pedestal 8 for receiving stringers by fastening the panel retainer 17.
  • the conventional fasteners such as nut and/or bolts are not used.
  • the engagement and disengagement of the stringer can be effected only by one step operation. Consequently, the modification of the arrangement of the cables of tubes to be laid between the free access floor and the base floor can be easily effected and the maintenance of these elements can also be easily effected.
  • the supporting element 19 of ABS resin etc. formed by monolithic molding includes a straddle portion 19a fitted over the main body 15a of the stringer 15, and an engaging portion 19b extending horizontally outwardly from each leg of the straddle portion 19a.
  • the engaging portion 19b is conformed to the contour of the peripheral to bottom portion 2c of the floor panels.
  • the straddle portion 19a includes at its opposite inner walls 19d a pair of inwardly extending protrusions 19c to be engaged with the engaging holes 15e extending through the main body 15a of the stringer 15.
  • the inner vertical walls 19d of the straddle portion 19a are adapted to be engaged with the outer side walls of the main body 15a, when fitting the straddle portion 19a of the supporting element over the main body 15a.
  • the vertical load applied to the floor panels 2 is transferred through the engaging portions 19b of the supporting member 19 supporting the peripheral to bottom portion 2c of the panels 2 to the stringers 15. Consequently, deformation of the flange portion 2b, an inadvertent play between floor panels due to the vertical load applied to the end portion of the floor panels, and the deformation of the engaging portion 19b of the supporting element 19 accompanied with the inadvertent play between panels can be avoided, and thus the stability of the floor panels are enhanced.
  • supporting surface 19f of the straddle portion 19a is interposed between the flange portion 2b of the floor panels 2 and the main body 15a of the stringer 15 prevents these members from metal-to-metal contact, and therefore, the noises produced from abutting of these members can be avoided.
  • the elasticity of the supporting surface 19f can accommodate the manufacturing tolerance of floor panels and/or stringers.
  • Figs. 16 and 17 Alternative embodiments of the stringer are shown in Figs. 16 and 17 respectively.
  • no supporting element 19 is utilized, i.e., the floor panels 2 are adapted to be supported by means of the stringer itself.
  • the stringer 28 has at its raised portion of each rim portion 28a thereof a horizontally extending supporting rim 28b, and the bottom of the floor panels 2 are supported by these rims 28b.
  • raterally extending supporting tongue 27a is provided at each side wall of the stringer 27.
  • the floor panel 2 described hereinbefore is formed of a top and bottom panels 21 and 22 of steel sheet connected by suitable means such as spot welding at their periphery so as to form a hollow space therebetween.
  • the hollow space is adapted to be filled with inorganic filler 23 such as mortar.
  • the floor panel has along its periphery a flange portion 2b.
  • the flange portion of the floor panel can be formed as thin as possible, since the weight of the floor panel and the load to be applied thereto are supported through the supporting element 19 by the stringer 15.
  • the stringer 15 is partially cut into the space defined below the flange portion of two adjacent floor panels, so that protruding of the stringer into the space between the free access floor and the base floor can be reduced, and thus, assuring the provision of the space for the cable or other lines to be laid through the space.
  • Floor panels are secured to the supporting structure 20 by engaging the panel retainer 17 with the male member 18 and then turning the retainer 17 to clamp the corners 2a of the floor panels.
  • the male member 18 includes a cylindrical shank 18a and an engaging member 18b, and secured to the center of the pedestal 8 for receiving stringers by means of bolt 30.
  • the panel retainer 17 to be engaged with the male member 18 includes a hollow cylindrical body defining a central bore 17b, a flange portion 17a extending raterally outwardly from the top edge of the body, and a bottom wall extending raterally inwardly from the bottom edge of the body, the top surface of the bottom wall is provided with a pair of opposite steps 17c.
  • a slide ring 24 formed of synthetic resinous material of self-lubricating feature is adapted to be interposed between the panel retainer 17 and the corners 2a.
  • the slide ring 24 includes an upper surface 24a to be adapted onto the bottom surface of the flange portion 17a, and an integrally formed cylindrical body portion 24b in which the cylindrical body 17b of the panel retainer is adapted to be fitted.
  • An inner surface 24c of the cylindrical body portion 24b is provided with a plurality of protrusions for securedly holding the body 17b therein.
  • a cap to be positioned over the upper surface of the flange portion 17a is designated generally by reference numeral 25.
  • the panel retainer 17 inserted into the side ring 24 to provide a panel retainer assembly is at first inserted into an opening 31 formed at the junction of four adjacent floor panels 2 immediately above the male member 18, then turned over the predetermined angle (e.g., 90 degree), then the panel retainer 17 is drawn downwardly into the opening 31 by the engagement with a ramp 18c formed on the bottom surface of the engaging member 18b.
  • predetermined angle e.g. 90 degree
  • the friction between the bottom surface of the flange portion 17a of the panel retainer 17 and the steps 2d of the corners 2a of the floor panels is substantially reduced by the slide ring 24 interposed therebetween to allow the panel retainer to be turned easily.
  • the rateral displacement between panels or staggering of these panels to be accompanied with the turning operation of the panel retainer 17 can be eliminated by reducing the friction therebetween.
  • the stringers 15 are clamped between the pedestal 8 and the floor panels 2, by engaging the panel retainer 17 with the male member 18 and then turning the retainer 17 with respect to the male member 18.
  • the panel supporting structure 20 is obtained as the rhamen structure constructed by stringers 15 and supporting columns 7.
  • the base plate 5 It is therefore unnecessary for increasing the size of the base plate 5 so as to increase the area thereof to be bonded to the base floor. Thus, the laying operation of the floor panels can be facilitated. It is also unnecessary to provide a reinforcing brace against overturning between the supporting column 7 and the base floor. Therefore, the spacing between the floor panels and the base floor can not be narrowed by the provision of such braces.
  • the rhamen structure constructed by the stringers 15 and the supporting columns 7 provides a sufficient anti-earthquake capacity.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Floor Finish (AREA)
EP19900907394 1990-04-27 1990-04-27 Support device of floor panels Withdrawn EP0529073A4 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1990/000568 WO1991017330A1 (fr) 1990-04-27 1990-04-27 Dispositif de support pour panneaux de revetement de sol

Publications (2)

Publication Number Publication Date
EP0529073A1 true EP0529073A1 (de) 1993-03-03
EP0529073A4 EP0529073A4 (en) 1993-06-30

Family

ID=13986487

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19900907394 Withdrawn EP0529073A4 (en) 1990-04-27 1990-04-27 Support device of floor panels

Country Status (2)

Country Link
EP (1) EP0529073A4 (de)
WO (1) WO1991017330A1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2069482A2 (es) * 1993-07-05 1995-05-01 Magro Tomas Diaz Sistema estructural para suelos multiservicio.
WO2001012919A1 (en) 1999-08-16 2001-02-22 Mura Imre Jr Supporting device for raised floor panels
EA012400B1 (ru) * 2007-02-16 2009-10-30 Александр Авдеевич Шатров Регулируемый сборно-разборный пол
JP2020190078A (ja) * 2019-05-18 2020-11-26 ツカ・カナモノ株式会社 多層階建築物の二重床構造
DE102020102610A1 (de) * 2019-11-04 2021-05-06 Hamberger Industriewerke Gmbh Podestelement und Eventboden

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4204033C2 (de) * 1992-02-12 1997-08-07 Mero Werke Kg Doppelboden
KR100925212B1 (ko) 2008-05-08 2009-11-06 주식회사 조은테크닉스앤아트 조립무대장치
JP6470905B2 (ja) * 2013-02-08 2019-02-13 大成建設株式会社 二重床構造
US10508467B2 (en) 2015-08-19 2019-12-17 biljax, inc. Engineered floor and scaffold systems
US11725413B2 (en) 2020-07-17 2023-08-15 Granite Industries, Inc. Elevated flooring system for clearspan tent
US11959300B2 (en) 2020-09-02 2024-04-16 Bil-Jax, Inc. Floor structure system and method of use

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63194063A (ja) * 1987-02-06 1988-08-11 ナカ工業株式会社 フロアパネルの支持装置
JPH01163355A (ja) * 1987-12-19 1989-06-27 Naka Ind Ltd フロアパネル支持装置
JPH01304262A (ja) * 1988-11-25 1989-12-07 Naka Tech Lab フロアパネルの支持装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9117330A1 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2069482A2 (es) * 1993-07-05 1995-05-01 Magro Tomas Diaz Sistema estructural para suelos multiservicio.
WO2001012919A1 (en) 1999-08-16 2001-02-22 Mura Imre Jr Supporting device for raised floor panels
EA012400B1 (ru) * 2007-02-16 2009-10-30 Александр Авдеевич Шатров Регулируемый сборно-разборный пол
JP2020190078A (ja) * 2019-05-18 2020-11-26 ツカ・カナモノ株式会社 多層階建築物の二重床構造
DE102020102610A1 (de) * 2019-11-04 2021-05-06 Hamberger Industriewerke Gmbh Podestelement und Eventboden

Also Published As

Publication number Publication date
EP0529073A4 (en) 1993-06-30
WO1991017330A1 (fr) 1991-11-14

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