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WO1996011088A1 - Outil de montage destine a un element de fixation prealablement assemble - Google Patents

Outil de montage destine a un element de fixation prealablement assemble Download PDF

Info

Publication number
WO1996011088A1
WO1996011088A1 PCT/EP1995/003943 EP9503943W WO9611088A1 WO 1996011088 A1 WO1996011088 A1 WO 1996011088A1 EP 9503943 W EP9503943 W EP 9503943W WO 9611088 A1 WO9611088 A1 WO 9611088A1
Authority
WO
WIPO (PCT)
Prior art keywords
washer
screw
installation tool
segments
back plate
Prior art date
Application number
PCT/EP1995/003943
Other languages
English (en)
Inventor
Jeffrey L. Mossman
Original Assignee
Sfs Industrie Holding Ag
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 Sfs Industrie Holding Ag filed Critical Sfs Industrie Holding Ag
Priority to AU38044/95A priority Critical patent/AU3804495A/en
Publication of WO1996011088A1 publication Critical patent/WO1996011088A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D15/00—Apparatus or tools for roof working
    • E04D15/04—Apparatus or tools for roof working for roof coverings comprising slabs, sheets or flexible material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/02—Arrangements for handling screws or nuts
    • B25B23/08—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation
    • B25B23/10—Arrangements for handling screws or nuts for holding or positioning screw or nut prior to or during its rotation using mechanical gripping means
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D15/00—Apparatus or tools for roof working
    • E04D15/04—Apparatus or tools for roof working for roof coverings comprising slabs, sheets or flexible material
    • E04D2015/042—Fixing to the roof supporting structure
    • E04D2015/047—Fixing to the roof supporting structure by screwing

Definitions

  • the invention relates generally to a preassembled fastening element including a screw and a large-surfaced metallic or plastic, e.g. a polymer, washer used to attach insulation material, and waterproofing membrane, onto a solid substructure.
  • a large-surfaced metallic or plastic e.g. a polymer, washer used to attach insulation material, and waterproofing membrane.
  • the invention relates more particularly to an installation device or tool to screw-in such a fastening element to make the attachment.
  • the installation device typically has a backing or support surface for the washer as well as a guide tube to receive the end of the screw having the screw head.
  • the guide tube is additionally constructed as a receptacle for an axially movable and rotatable tool which takes hold of the screw head and drives the screw into the substructure.
  • the screw is provided with a drill tip, a shaft with a thread which extends over at least part of the shaft length, and a screw head.
  • the washer is provided with a preferably central aperture in order to receive the screw shaft. It is important to contractors in the field that the fasteners be preassembled, that is, with the washer attached at a substantially right angle to the screw. This preassembly facilitates rapid assembly, for example, installation of insulation and waterproofing layers on a roof top that has been prepared to receive an insulation/waterproofing system. Because power tools are generally used in driving the screw into the substructure in conjunction with the installation tool, it is most desirable at the start of installation that the washer of each fastener be at the same position on the screw in every instance. Then assembly becomes more routine, and the time for assembly is more predictable.
  • the head end of the screw is held in the guide tube, and the drill end is pressed into the outer surface of the insulation layer until the washer is brought to bear on the outer surface of the insulation. Then, if the washer is prevented from rotating, further rotation of the screw head by the a power tool causes the screw to advance through the washer until the screw reaches the substructure where the drill tip penetrates, followed by the threaded shank of the screw.
  • fastening elements means, for example, an adhesive, to make the connection between the washer and the scre threads more resistant to relative motion of the washer about the screw axis.
  • the installation tool in accordance with the invention has a backing surface for the washer as well as a guide tube to receive the end of the screw having the screw head.
  • the backing surface is surrounded by an extended collar to form a recess wherein the washer is seated.
  • Magnets are embedded in the backing surface so as to better retain a washer and screw fastener, fully assembled, in the tool when the washer is formed of a magnetically attractive material, for example, steel.
  • a plurality of pins located near the circumferential perimeter of the backing surface and generally perpendicular thereto, have conical or bevelled surfaces. These bevelled surfaces together provide a self-centering cradle for the washer that is held by the tool, and by the magnets when using steel washers.
  • the tapered pins make local contact with the circumferential edge of the washer, and when the screw is rotated by a power tool connected to the fastening tool in a conventional manner, rotation of the washer in the tool is prevented by interference between the washer's peripheral edge and the bevelled pin surfaces.
  • the screw is able to rapidly advance through the washer as the screw is turned during installation of the fastener assembly, for example, in the installation of insulation sheeting on a roof substructure.
  • the installation tool is not limited in its uses to roofing constructions but may be used wherever a sheet material or sheeting, regardless of thickness and rigidity or flexibility, must be attached to a supporting structure.
  • Fig. 1 is an elevational view, in section, of an installation tool in accordance with the invention, holding a fastening element;
  • Fig. 2 is a bottom view of the holding tool of Fig. 1 , with the fastener element removed.
  • the installation tool 10 in accordance with the invention includes a guide tube 12 connected to a receiver 14. Both are concentrically circular about an axis 16.
  • the receiver 14 includes a backing surface 18 that is slightly concave and surrounded by an annular collar 20 that tapers in the direction away from the guide tube 12.
  • the collar terminates in an annular, generally planar face 22 that is used for pressing against an insulation layer during attachment of that layer to a substructure.
  • a recess 34 with an expanded opening is provided.
  • the backing surface 18 is part of a back plate 24 having substantial thickness and rigidity.
  • a central opening 26 in the back plate extends from the surface 18 and joins the central opening 28 of the guide tube 12.
  • the opening 26 in the back plate 24 diverges, opening as it approaches the backing surface 18.
  • Three magnets 30 are symmetrically placed about the central axis 16, being embedded and held by adhesive in the back plate 24.
  • a surface 32 of each magnet 30 is exposed in the recess 34 formed by the collar 20 and back plate 24.
  • the exposed end 38 of the pin 36 is planar and generally parallel to the planar face 22 of the collar 20.
  • the pins 36 are recessed within the collar 22 and have bevelled surface 40 that faces the central axis 16.
  • the bevelled surface may be a flat or conica surface.
  • the three bevelled surfaces 40 together provide a tapered cradle, like a collet, that assists in centering a fastening element, as described hereinafter.
  • a deviation in either direction by an amount not exceeding approximately 15° is permissible and may be beneficial.
  • three pins 36 provides stability when placing an object in the cradle formed by the bevelled surfaces 40.
  • the quantity of pins is not limited to three and may be greater or less in number.
  • three magnets 30 are illustrated, the quantity of magnets is not so limited; more or less magnets may be used.
  • a single ring magnet (not shown ⁇ , concentric with the axis 16, may also be used and shapes, other than round, may also be used.
  • the installation tool is generally made of plastic that is hard and rigid.
  • the pins are preferably of steel so that their surfaces 40 resist wear caused by interaction with the washer.
  • the plastic elements of the tool may be fabricated by molding or casting. If the tool is made entirely of metal, the bevelled surfaces can be molded into the tool, and not be in the form of separate pins as described above.
  • the pins are held by using an adhesive in holes that are provided in the back plate.
  • the magnets are also held by adhesive in holes provided in the back plate. Magnets serve no function and may be omitted when only plastic washers are to be used.
  • the installation tool 10 is used in conjunction with a fastener element 44 that includes a screw 46 and a washer 48 which engages the threaded portion 50 of the screw 46.
  • the screw 46 also includes a drill tip 52 and a screw head 54.
  • the screw head 54 has a thin integral flange 56 having a diameter that makes for a sliding fit in the central opening 28 of the guide tube 12.
  • Such fastener elements 44 are delivered to the construction site in a preassembled condition with the washer attached at a fixed location on the screw so that all fastener elements are substantially similar. Because it is desired to have repeatability in operations when using these fastener elements, the central hub 58 of the washer is fabricated in a manner to provide a turn- resistant connection to the screw threads.
  • the conical cradle formed by the multiple bevelled surfaces 40 centers the washer about the axis 16. This centering section is complemented by the centering provided by the flange 56 in the opening 28 of the guide tube 2.
  • the diameter of the washer is such that the circumferential edge 60 will rest on the bevelled surfaces 40.
  • a given installation tool 10 can accommodate washers of different diameters, but most preferably in a range so that the circumferential edge 60 is resting on the bevelled surfaces 40.
  • the washer 48 which is made of magnetically permeable material, e.g., steel, is close to the magnets 30.
  • the washer is attracted by the magnet and held in place even though a gap may still exist between the washer 48 and the magnets 30.
  • the illustrated washer has undulations which come close to the magnets.
  • other contours for the washer including a flat washer, may be used.
  • the undulations in the washer provide stiffness which is advantageous in holding insulation layers on a substructure when external forces come into play, for example, walking on an insulated roof.
  • the washer may also make direct contact with the magnets.
  • a power driver (not shown) is inserted into the guide tube 12 through the end 62, and a socket on the end of the driver mates with the hex head of the screw head 54 and rotates the screw.
  • the washer 48 does not rotate with the screw 46, because engagement of the circumferential edge 60 with the bevelled surfaces 40 prevents rotation of the washer 48 after the washer has seated in the cradle formed by the bevelled surfaces 40. Therefore, when rotated, the screw overcomes any resistant connection between the washer hub 58 and the threaded portion 50 of the screw, and the screw 46 advances through the washer until engagement is made by the drill tip 52 and threads 50 with the substructure to which attachment, for example, of an insulation layer, is to be made.
  • the holding power of the pin surfaces 40 may be affected by the bevel angle 43 that is set between the imaginary radius 42 and the bevel edge 45.
  • the bevel surfaces 40 tend to interfere more with the washer edge 60 when the angle 43 is not a right angle.
  • the combination of installation tool 0 and fastening element 44 is pressed against the outer surface of the insulation layer (not shown) so that the screw 46 penetrates until the planar face 22 of the installation tool 10 presses on the outer surface of the insulation layer. Then, rotation of the screw advances the screw while the washer is held stationary by the bevelled surfaces. The outer surface of the insulation layer is not damaged as the washer does not rotate.
  • magnets 30 in the installation tool 0 have been described above, it should be understood that in alternative embodiments in accordance with the invention, the magnets may be omitted whether steel or plastic washers are used.
  • Washers of cross sections other than that which has been illustrated, may be used. Basically, the tool 10 and fastener element 44 are constructed for use with each other within a particular range of washer diameters.
  • the depth of the recess 34 in the back plate 24 may vary depending upon the washer that is intended for use therein, and it is not necessary that the washer 48 contact the backing surface when it is cradled on the bevelled surfaces 40.
  • the backing surface limits deflection of the washer when the drill tip first presses into the insulation layer and first contacts the substructure.
  • the washer need not be round.
  • the pins 36 and their bevelled surfaces 40 would be positioned, and the quantity of pins set, so that adequate support is provided in correspondence with the outline of the washer.
  • generally rectangular washers with rounded corners are frequently employed in the installation of insulation layers on a substructure.
  • the installation tool described above requires that the screw head 54 be inserted into the guide tube 12 through the central opening 26 in the backing surface 18.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Bolts, Nuts, And Washers (AREA)

Abstract

Cet outil de montage, destiné à des éléments de fixation préalablement assemblés, procure, lors de sa mise en place, un alignement entre la rondelle et la vis et empêche la rondelle de tourner avec celle-ci. Cet outil possède une surface de support destinée à la rondelle ainsi qu'un tube de guidage destiné à recevoir la tête ou la tige filetée de la vis. Des aimants, encastrés dans la surface de support, maintiennent dans l'outil, dans un état d'assemblage total, une rondelle d'acier ainsi qu'un élément de fixation de vis. Une pluralité de broches placées près du périmètre circonférentiel de la surface de support possèdent des surfaces coniques ou biseautées, lesquelles constituent ensemble un berceau de centrage automatique pour la rondelle. Les broches coniques établissent un contact local avec le bord circonférentiel de la rondelle. Lorsque la vis est tournée par un outil à moteur raccordé à l'outil de fixation, la rotation de la rondelle dans l'outil est empêchée par l'interférence entre le bord périphérique de la rondelle et les surfaces biseautées des broches.
PCT/EP1995/003943 1994-10-07 1995-10-06 Outil de montage destine a un element de fixation prealablement assemble WO1996011088A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU38044/95A AU3804495A (en) 1994-10-07 1995-10-06 Installation tool for preassembled fastening element

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US32050894A 1994-10-07 1994-10-07
US08/320,508 1994-10-26

Publications (1)

Publication Number Publication Date
WO1996011088A1 true WO1996011088A1 (fr) 1996-04-18

Family

ID=23246747

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1995/003943 WO1996011088A1 (fr) 1994-10-07 1995-10-06 Outil de montage destine a un element de fixation prealablement assemble

Country Status (2)

Country Link
AU (1) AU3804495A (fr)
WO (1) WO1996011088A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2888767A1 (fr) * 2005-07-20 2007-01-26 L R Etanco Soc Par Actions Sim Dispositif permettant le blocage en rotation d'une piece au cours de son vissage
WO2011119970A3 (fr) * 2010-03-26 2012-01-26 Perfect Point Edm Corporation Dispositifs et procédés de centrage d'outil à main
FR2972663A1 (fr) * 2011-03-15 2012-09-21 Peugeot Citroen Automobiles Sa Dispositif de centrage et de maintien en position centree d'une rondelle a l'interieur d'un amortisseur, lors de l'assemblage de la tige de ce dernier
CN106813029A (zh) * 2017-03-03 2017-06-09 慈溪市高新密封材料有限公司 缠绕垫片

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375119A (en) * 1981-02-09 1983-03-01 Textron Inc. Floating plate holder installation tool
EP0338554A2 (fr) * 1988-04-21 1989-10-25 SFS Industrie Holding AG Dispositif de préhension pour outil d'installation et procédé d'installation
EP0535547A1 (fr) * 1991-09-30 1993-04-07 SFS Industrie Holding AG Dispositif de préhension et plaquette de fixation composite
DE4239339A1 (de) * 1992-11-23 1994-05-26 Sfs Stadler Holding Ag Heerbru Befestigungselement sowie Vorrichtung zum Eindrehen eines Befestigungselementes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4375119A (en) * 1981-02-09 1983-03-01 Textron Inc. Floating plate holder installation tool
EP0338554A2 (fr) * 1988-04-21 1989-10-25 SFS Industrie Holding AG Dispositif de préhension pour outil d'installation et procédé d'installation
EP0535547A1 (fr) * 1991-09-30 1993-04-07 SFS Industrie Holding AG Dispositif de préhension et plaquette de fixation composite
DE4239339A1 (de) * 1992-11-23 1994-05-26 Sfs Stadler Holding Ag Heerbru Befestigungselement sowie Vorrichtung zum Eindrehen eines Befestigungselementes

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2888767A1 (fr) * 2005-07-20 2007-01-26 L R Etanco Soc Par Actions Sim Dispositif permettant le blocage en rotation d'une piece au cours de son vissage
WO2011119970A3 (fr) * 2010-03-26 2012-01-26 Perfect Point Edm Corporation Dispositifs et procédés de centrage d'outil à main
CN102905853A (zh) * 2010-03-26 2013-01-30 完美点Edm公司 手工工具居中装置和方法
FR2972663A1 (fr) * 2011-03-15 2012-09-21 Peugeot Citroen Automobiles Sa Dispositif de centrage et de maintien en position centree d'une rondelle a l'interieur d'un amortisseur, lors de l'assemblage de la tige de ce dernier
CN106813029A (zh) * 2017-03-03 2017-06-09 慈溪市高新密封材料有限公司 缠绕垫片

Also Published As

Publication number Publication date
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