EP2832933B1 - Elément de fixation - Google Patents

Elément de fixation Download PDF

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Publication number
EP2832933B1
EP2832933B1 EP13178297.1A EP13178297A EP2832933B1 EP 2832933 B1 EP2832933 B1 EP 2832933B1 EP 13178297 A EP13178297 A EP 13178297A EP 2832933 B1 EP2832933 B1 EP 2832933B1
Authority
EP
European Patent Office
Prior art keywords
plate
fastening element
shank
cavity
shaft
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.)
Active
Application number
EP13178297.1A
Other languages
German (de)
English (en)
Other versions
EP2832933A1 (fr
Inventor
Falk Rosenkranz
Juergen Boeckle
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.)
Hilti AG
Original Assignee
Hilti 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 Hilti AG filed Critical Hilti AG
Priority to EP13178297.1A priority Critical patent/EP2832933B1/fr
Publication of EP2832933A1 publication Critical patent/EP2832933A1/fr
Application granted granted Critical
Publication of EP2832933B1 publication Critical patent/EP2832933B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/62—Insulation or other protection; Elements or use of specified material therefor
    • E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
    • E04B1/76—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls specifically with respect to heat only
    • E04B1/762—Exterior insulation of exterior walls
    • E04B1/7629—Details of the mechanical connection of the insulation to the wall
    • E04B1/7633—Dowels with enlarged insulation retaining head

Definitions

  • the invention relates to fasteners for securing insulating panels to building walls, in particular to building exterior walls, according to the preamble of claims 1 and 2, and a method for producing such fasteners.
  • a generic fastener is equipped with a shaft for anchoring the fastener in a hole in the building wall, and with a retaining plate for securing an insulation plate on the shaft.
  • Fasteners of the generic type are used to attach insulating panels of a thermal insulation composite system, for example of a foam or a fiber material, to building walls.
  • a fastener is for example from the DE 7505392 U1 known.
  • the DE 10139261 A1 describes a wall element for the cladding and / or insulation of surfaces, with a base plate made of a foamed base material facing away from the surface to be clad front and one facing the surface to be coated facing back, and in the sleeve-shaped holding elements with a passage perpendicular to the plate plane are embedded for receiving fasteners, wherein the holding elements have openings and are penetrated by the base material at least partially.
  • the DE102006042052 A1 discloses an insulating plate dowel for pressing insulating plates, comprising a dowel body, an expansion body and a Isolierstofondondelle, wherein the pressure plate is integrally formed with the dowel and the Isolierstoffrondelle is connected to the pressure plate, wherein the arranged on the pressure plate Isolierstoffrondelle is at least so elastic that an opening resulting from the driving in of the expansion body and / or a tool through the Isolierstoffrondelle thereafter independently at least so far closes that the pressure plate is largely covered again.
  • the document discloses a fastener having the features of the preamble of claims 1 and 2, respectively.
  • the object of the invention is to provide fasteners which are particularly favorable to manufacture with high reliability and good mechanical and thermal properties, and to provide a corresponding manufacturing method.
  • the retaining plate on a foam material.
  • One idea of the invention can be seen to be to carry out at least a portion of the retaining plate made of foam, ie in particular of a material with distributed over the entire mass cells and / or a density that is lower than the density of the framework substance. It has been found that plastic material can be saved by using a foam compared to conventional solid plastic plates can, without significant losses in the holding plate strength and holding plate rigidity must be accepted. In addition, the use of a foam may have manufacturing advantages. In particular, the flowability of the melt can be increased by the foaming agent charge which is regularly required for foaming, and thus the complete filling of the mold cavity of the mold used to produce the plate can be facilitated. Finally, the use of a foam and adverse thermal bridges can be avoided.
  • the retaining plate may also consist entirely of a foam material.
  • the shaft is preferably at least partially made of a solid material, since this is particularly well suited for receiving the forces occurring there.
  • the retaining plate is larger in diameter than the shaft.
  • the retaining plate is formed in two parts with a radially inner inner plate and a radially outer expansion plate, wherein preferably the extension plate comprises a foam material.
  • the inner plate, the extension plate or both the inner plate and the extension plate may comprise a foam material.
  • the shaft is preferably arranged on the inner plate. The radial direction may be related in particular to the longitudinal axis of the shaft and / or the fastening element.
  • the retaining plate has areas in which the core porosity is greater than the marginal porosity and / or in which the porosity increases with increasing depth, ie with increasing distance from the surface of the holding plate and / or in which the bulk density with increasing depth So decreases with increasing distance from the surface of the holding plate.
  • porosity the ratio of void volume to total volume can be understood in particular in the usual way.
  • the retaining plate has areas with a foamed core structure and a fixed edge layer. As a result, a particularly stable holding plate can be obtained in manufacturing technology particularly simple manner.
  • the fastening element can be designed as expansion dowel. Accordingly, it may be advantageous that the shaft has a bore, and that an expansion body is provided, which is insertable for expanding the shaft into the bore. By widening of the shank this is secured in the hole in the building wall.
  • the fastener may also be a nail element, which holds alone in the hole in the building wall due to its inherent elasticity.
  • the invention also relates to a method for producing a fastening element according to the invention, wherein for producing the retaining plate, in particular an inner plate or a widening plate, a blowing agent-laden plastic melt is introduced into a cavity of a molding tool and the cavity subsequently, in particular before the curing of the plastic, at least partially, preferably only partially open, while the plastic melt is foamed. It can therefore be provided to load the plastic melt with a blowing agent and to open the cavity to a desired foaming after injection of the plastic melt into the cavity of the mold and during foaming of the plastic mass. In this way, in a particularly simple manner, a holding plate with a foamed core structure and a fixed edge layer can be obtained.
  • the propellant may be, for example, CO 2 or sodium bicarbonate.
  • the method for producing the holding plate may in particular be a foam injection molding method.
  • the cavity is opened during the foaming of the plastic melt on the side of the extension plate which faces away from the shaft, and / or on the opposite side, ie the side of the extension plate which faces the shaft becomes.
  • a foam structure can be obtained which is particularly well suited for the attachment of insulation boards to a building wall. If no shaft is present, it can be provided that the cavity is opened during the foaming of the plastic melt on the side of the extension plate, which faces away from the attachment region for the shaft and or is not opened on the opposite side.
  • FIG. 1 A first embodiment of an inventive fastener is in FIG. 1 shown. It has an approximately cylindrical shaft 20, on the back of a retaining plate 10 is seconded.
  • the holding plate 10 is larger in diameter than the shaft 20, that is, it extends farther from the longitudinal axis 100 of the fastener than the shank 20.
  • a bore 21 is provided, the back to the holding plate 10, the means to that side of the holding plate 10 back, which faces away from the shaft 20, is open.
  • the bore 21 has a cross-sectional taper.
  • the shaft 20 is introduced with its tip portion 29 ahead through an insulating plate into a borehole in a building wall and anchored there.
  • the insulating plate on the shaft 20 and thus secured to the building wall against falling in the direction of the longitudinal axis 100.
  • the shaft 20 can be secured by a non-illustrated rod-like expansion element in the building wall, which is inserted into the bore 21 to the cross-sectional taper in the tip portion 29 of the shaft 20 and there radially expands the shaft 20 and pressed with the borehole wall.
  • the shaft 20 can also be secured alone by means of its inherent elasticity in the borehole. In such an embodiment, in which the fastening element acts as a nail element, the expansion element can be omitted.
  • the holding plate 10 on a foam material.
  • the holding plate 10 may have a foamed core structure and a solid boundary layer.
  • FIG. 2 A further embodiment of a fastening element according to the invention is shown in FIG FIG. 2 shown.
  • the holding plate 10 is formed in two parts with an inner inner plate 11 and an outer expansion plate 12.
  • the inner plate is directly connected to the shaft 20.
  • the outer diameter enlarger plate 12 is held indirectly on the inner plate 11 on the shaft 20.
  • Both the inner plate 11 and the extension plate 12, or also only one of these two plates 11 and 12, according to the invention may comprise a foam material, in particular a foamed core structure and a solid surface layer.
  • the retaining plate 10, in particular the inner plate 11 and / or the expansion plate 12 described above, can be produced by foam injection molding.
  • a plastic melt is injected into a cavity of a molding tool and, after the molten plastic has been injected into the cavity, the cavity is opened by the desired degree of foaming.
  • FIG. 3 indicated where the position of the cavity with a dotted line in time before the tool opening and a solid line, the outline of the finished holding plate 10 is shown.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Connection Of Plates (AREA)

Claims (5)

  1. Elément de fixation pour la fixation de panneaux en matière isolante sur des murs de bâtiment, comportant:
    une tige (20) pour ancrer l'élément de fixation dans un trou dans le mur de bâtiment, et
    un disque d'arrêt (10) pour bloquer un panneau en matière isolante sur la tige (20),
    caractérisé en ce que
    le disque d'arrêt (10) est monobloc et est entièrement formé à partir d'un matériau en mousse, dans lequel le disque d'arrêt (10) comporte en particulier une structure de noyau en mousse et une couche superficielle solide.
  2. Elément de fixation pour la fixation de panneaux en matière isolante sur des murs de bâtiment, comportant:
    une tige (20) pour ancrer l'élément de fixation dans un trou dans le mur de bâtiment, et
    un disque d'arrêt (10) pour bloquer un panneau en matière isolante sur la tige (20),
    caractérisé en ce que
    le disque d'arrêt (10) est formé en deux parties avec un disque intérieur (11) radialement vers l'intérieur et un disque d'extension (12) radialement vers l'extérieur, dans lequel le disque intérieur (11) ou le disque d'extension (12) ou aussi bien le disque intérieur (11) que le disque d'extension (10) sont respectivement formés entièrement à partir d'un matériau en mousse, dans lequel le disque intérieur (11) ou le disque d'extension (12) comporte en particulier une structure de noyau en mousse et une couche superficielle solide.
  3. Elément de fixation selon l'une des revendications précédentes,
    caractérisé en ce que
    la tige (20) comporte un alésage (21) et un corps d'expansion est prévu qui peut être introduit dans l'alésage (21) pour élargir la tige (20), ou
    en ce que l'élément de fixation est un clou.
  4. Procédé pour fabriquer un élément de fixation selon l'une des revendications précédentes, dans lequel pour fabriquer le disque d'arrêt (10), en particulier un disque intérieur (11) ou un disque d'extension (12), une matière plastique fondue contenant un agent moussant est introduite dans une cavité d'un outil de moulage, et
    la cavité est ensuite au moins partiellement ouverte et la matière plastique fondue est ainsi amenée à l'état de mousse.
  5. Procédé selon la revendication 4,
    caractérisé en ce que
    pendant le moussage de la matière plastique fondue, la cavité est ouverte sur le côté du disque d'extension (12) qui est opposé à la tige (20).
EP13178297.1A 2013-07-29 2013-07-29 Elément de fixation Active EP2832933B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP13178297.1A EP2832933B1 (fr) 2013-07-29 2013-07-29 Elément de fixation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13178297.1A EP2832933B1 (fr) 2013-07-29 2013-07-29 Elément de fixation

Publications (2)

Publication Number Publication Date
EP2832933A1 EP2832933A1 (fr) 2015-02-04
EP2832933B1 true EP2832933B1 (fr) 2017-07-26

Family

ID=48875592

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13178297.1A Active EP2832933B1 (fr) 2013-07-29 2013-07-29 Elément de fixation

Country Status (1)

Country Link
EP (1) EP2832933B1 (fr)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006042052A1 (de) * 2005-09-07 2007-03-08 Kölner Deutschland GmbH Isolierplattendübel

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7505392U (de) 1975-06-26 Buschke R Befestigungsvorrichtung für Dämmstoff-Platten
DE10139261C2 (de) * 2001-08-09 2003-07-03 Heinrich August Kleine Wandelement sowie Verfahren zu dessen Herstellung

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006042052A1 (de) * 2005-09-07 2007-03-08 Kölner Deutschland GmbH Isolierplattendübel

Also Published As

Publication number Publication date
EP2832933A1 (fr) 2015-02-04

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