EP3470591A1 - Dispositif de fixation de matériau isolant - Google Patents

Dispositif de fixation de matériau isolant Download PDF

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Publication number
EP3470591A1
EP3470591A1 EP18197862.8A EP18197862A EP3470591A1 EP 3470591 A1 EP3470591 A1 EP 3470591A1 EP 18197862 A EP18197862 A EP 18197862A EP 3470591 A1 EP3470591 A1 EP 3470591A1
Authority
EP
European Patent Office
Prior art keywords
dämmstoffbefestiger
insulating
anchoring
threaded portion
adhesive
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Withdrawn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
EP18197862.8A
Other languages
German (de)
English (en)
Inventor
Jürgen Renz
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.)
Fischerwerke GmbH and Co KG
Original Assignee
Fischerwerke GmbH and Co KG
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
Priority claimed from DE102017129879.7A external-priority patent/DE102017129879A1/de
Application filed by Fischerwerke GmbH and Co KG filed Critical Fischerwerke GmbH and Co KG
Publication of EP3470591A1 publication Critical patent/EP3470591A1/fr
Withdrawn legal-status Critical Current

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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 a Dämmstoffbefestiger with the features of the preamble of claim 1.
  • a generic Dämmstoffbefestiger is from the published patent application DE 10 2010 061 283 A1 known.
  • the generic Dämmstoffbefestiger is suitable for attaching an insulating element, such as an insulating board made of polystyrene or mineral wool, as used for a thermal insulation composite system, to an anchoring ground, such as a wall of a mineral building material such as concrete.
  • the Dämmstoffbefestiger has no retaining plate as an insulating element, but a threaded portion which can be screwed into the insulating element.
  • the front end of the Dämmstoffbefestigers forms an expansible plug, which can be spread by the driving of a screw and thus anchored mechanically in a wellbore in the anchoring ground.
  • the screw connects the threaded portion and the expansion anchor tensile, so that forces acting, for example, by wind suction on the insulating element, are absorbed by the insulating element and mechanically transferred via the screw and the expansion dowel in the anchoring ground.
  • Such Dämmstoffbefestiger are very well suited for the absorption of wind suction.
  • the known Dämmstoffbefestiger are not designed to absorb shear forces, such as the weight of a mounted on a wall insulation element or a thermal insulation composite system.
  • the dead weight of the thermal insulation composite system is usually derived by gluing the anchoring ground facing the inside of the insulating element with the anchoring ground in the anchoring ground.
  • the object of the invention is therefore to further develop a generic Dämmstoffbefestiger such that it prevents deformation of the outer layers of a wall mounted on an insulating element.
  • the Dämmstoffbefestiger invention has an anchoring portion with which the Dämmstoffbefestiger in the anchoring ground form, friction and / or cohesively anchored.
  • the anchoring portion is designed depending on the anchoring reason. If the anchoring base is made, for example, of a mineral building material such as concrete, then the anchoring section is in particular an expansible fixing plug, as disclosed in the published patent application DE 10 2010 061 283 A1 is known. Also, the use of a screw thread, which is suitable for direct screwing into a borehole in a mineral substrate such as concrete, is possible.
  • the anchoring portion may be formed as a sieve sleeve, so that the Dämmstoffbefestiger can be sufficiently anchored in perforated bricks or aerated concrete.
  • the anchoring base is made of wood, then the anchoring section can consist of a thread of a wood screw, which can be screwed directly, in particular without pre-drilling, into the anchoring ground. The list is not final.
  • a helical insulating element is arranged with a first threaded portion for screwing into the insulating element on the Dämmstoffbefestiger invention.
  • the first threaded portion extends helically along a longitudinal axis of the Dämmstoffbefestigers, in particular parallel to an insertion direction of the Dämmstoffbefestigers in the insulating element, or the anchoring portion in the anchoring ground runs.
  • the first Threaded section cuts a thread in the insulating element when screwing into the insulating element.
  • the first threaded portion has a diameter which is several times greater than the diameter of the anchoring portion.
  • a “multiple” here means that the diameter of the threaded portion is at least by a factor of 3 larger than the diameter of the anchoring portion, if the anchoring portion is formed as a sieve sleeve.
  • the diameter of the threaded portion is in particular by a factor of 5 greater than the diameter of the anchoring portion, if the anchoring portion is designed as expansion dowel, and in particular by a factor of 6 greater than the diameter of the anchoring portion, if the anchoring portion is formed as a thread of a wood screw.
  • the diameter of the first threaded section is in particular at least 40 millimeters and preferably at least 60 mm.
  • the Dämmstoffbefestiger on a backfill element with at least one axial opening and with at least one circumferential opening.
  • the filling element has, in particular, a basic body which is designed as a hollow body, in particular as a hollow cylinder or as a sleeve, wherein the circumferential opening penetrates the lateral surface of the basic body.
  • the filling element is arranged on the side facing away from the anchoring portion of the insulating material holding element on Dämmstoffbefestiger.
  • the filling element forms a rear portion and the axial opening forms the rear end of the Dämmstoffbefestigers.
  • “Rear” here refers to the direction of introduction of the Dämmstoffbefestigers in an insulating element, wherein the part of the Dämmstoffbefestigers which faces away from the anchoring base during insertion forms the rear end.
  • the anchoring portion is arranged at the front of Dämmstoffbefestiger, or it forms its front end.
  • the filling element, as well as the insulating element, in particular completely, in the insulating material results in a material bond between the insulating element and the Dämmstoffbefestiger so that slipping or deformation of the outer layers of the insulating element is prevented at least in the region of the backfill element.
  • the backfill element forms the rear end of the insulating fastener
  • the outer layers of the insulating element facing away from the anchoring base are connected in a material-bonded manner to the insulating fastener, so that in particular deformation of these outer layers is prevented.
  • the introduction of the adhesive can be carried out in particular with a tubular adhesive nozzle of a commercial adhesive gun or adhesive can, as is known for example from commercially available mounting foam, or a nozzle or a static mixer of a cartridge.
  • adhesive nozzle is used, which does not exclude other possibilities for introducing the adhesive.
  • the adhesive nozzle can be introduced in the filling element, for example, to a front end of the backfill element, in particular in the hollow cylindrical body of the backfill element, and when filling the adhesive into the backfill element, the adhesive nozzle can be moved to the rear, to a rear end of the backfill element. This is achieved in the presence of several distributed circumferentially and longitudinally circumferential openings that the adhesive emerges uniformly from the peripheral openings.
  • the adhesive is in particular an expanding adhesive, in particular an expanding foam, in particular a polyurethane (PU) foam, in particular a commercially available PU quick-assembly foam, for example a "fischer 1K premium gun foam”.
  • Expanding means here that the adhesive when, or after dispensing from its packaging, in particular from a foam can, and before complete curing, increases its volume, as is known from commercial PU gun foams. In particular, the volume of the adhesive during dispensing and / or after dispensing and before or during curing increases by a multiple.
  • a fire protection foam is used.
  • fire protection foam an adhesive is called, which is flame retardant and the insulating anchor in case of fire temporarily protects against failure by burning or melting.
  • a fire protection foam according to the invention is for example the " fischer 1K Premium B1 Gun Foam PUP B1 750 "(The concrete product examples refer to the” fischer Main Catalog Fastening Systems "03/2017 of fischerwerke GmbH & Co. KG, 72178 Waldachtal .)
  • the filling element preferably has a plurality of circumferentially spaced circumferential openings.
  • the circumferential openings can also be arranged offset from each other in the circumferential direction. This allows the adhesive to emerge from the filler element at various points along the longitudinal axis and to bond with the insulating material of the insulating element.
  • the Dämmstoffbefestigers invention is arranged on the backfill element, in particular on a base body of the backfill element, at least a second threaded portion.
  • the second threaded portion may be arranged on the filling element such that it cuts a second thread when inserting the filling element into the insulating element in the insulating element.
  • the second thread turn is arranged on the backfill element such that the second thread section does not intersect a second thread turn in the insulation element, but that it follows the thread cut through the first thread section and lies therein.
  • the second threaded portion has the same pitch as the first threaded portion. This prevents that the second threaded portion cuts a second thread in the insulating element, which could reduce the bearing capacity of the connection between the Dämmstoffbefestiger and the insulating element.
  • the second threaded portion preferably has a smaller diameter than the first threaded portion, so that the thread cut through the first threaded portion in the insulating element thread when screwing the second threaded portion is not increased in the radial direction and the bearing capacity of the connection between the Dämmstoffbefestiger and the insulating element not is reduced.
  • the second threaded portion has a larger flank width, so a larger dimension of the thread flank in the axial Having direction, whereby it comes with the same pitch of the two threaded portions to a widening of the cut through the first threaded portion in the insulating element thread, creating an enlarged filling space for receiving adhesive.
  • the second threaded portion does not extend completely around a circumference of the filling element, in particular at most by half the circumference of the filling element.
  • the second threaded portion is thus only a part of a complete threaded portion.
  • complete threaded portion herein is meant a threaded portion that extends at least once completely around the circumference of the backfill element.
  • the fact that the second threaded portion does not extend completely around the circumference of the backfill element it is particularly possible to arrange a plurality of short threaded portions on the backfill element, whereby sufficient space for a plurality of circumferential openings on the backfill element, in particular between the threaded portions, remains.
  • a circumferential opening is arranged, such that this circumferential opening is in particular on an imaginary helical line on which the directly before arranged second threaded portion is located.
  • at least one circumferential opening is arranged in each case between two second threaded sections, such that this circumferential opening lies in particular on an imaginary helical line on which the two second threaded sections are located.
  • the arrangement of the circumferential opening behind a second threaded portion and / or between two second threaded portions has the advantage that the adhesive emerging from a peripheral opening can penetrate into the thread cut into the insulating element and locally fill the thread, whereby the contact surface between the adhesive and the insulating holding member is enlarged.
  • the second threaded section ends in the circumferential direction in a steeply sloping rear thread flank, in particular a thread flank extending substantially radially to the longitudinal axis. This results There is a relatively large filling space in the screwing behind one or the second threaded portion.
  • the peripheral openings are arranged in at least two axially extending rows, wherein in particular the circumferential openings of at least two adjacent rows differ in size and number.
  • first circumferential openings are arranged axially, that is to say in the longitudinal direction between two second threaded sections, wherein the first circumferential openings are in particular larger than second circumferential openings, which are arranged in the circumferential direction between two threaded sections.
  • second circumferential openings can also be offset axially and arranged in the circumferential direction in front of a threaded portion and behind a first circumferential opening.
  • the filling element is attached to the insulating element.
  • the backfill element is connected in a tension-proof manner to the insulating material holding element, such that the backfill element engages behind the first threaded section.
  • the connection is designed in the manner of a bayonet closure, which allows easy mounting of the filling element on the insulating element. A thread, a bond or a similarly complex in the production compound is not necessary.
  • the filling element preferably consists of at least two sectional elements which are connected to one another.
  • the section elements are arranged axially one behind the other.
  • the filling element is in particular in one piece, with section elements being connected to one another by a predetermined separation point.
  • the predetermined breaking point is designed in particular as a point with a reduced wall thickness of the filling element, so that the axial length of the filling element can be set to any desired thickness of the insulating element to be fastened by breaking off one or, if present, a plurality of section elements.
  • the filling element can be multi-part, with the individual section elements in particular being stuck together.
  • the spacer elements for example, by a locking connection axially connected to each other.
  • each of the section elements in each case has at least one circumferential opening.
  • at least one second threaded portion is arranged on each of the section elements, whereby the introduction of the Dämmstoffbefestigers facilitates in the insulating element and a uniform filling of the backfill element is ensured with adhesive.
  • the anchoring portion is formed as an expansion anchor, which is expandable by driving a spreading and thus mechanically anchored in a borehole.
  • the expansion element may in particular be a screw or a nail.
  • the anchoring portion is a screen sleeve, can be introduced into the adhesive for cohesive anchoring.
  • the driving in of the spreading element or the introduction of the adhesive through the filling element takes place.
  • the adhesive may in particular be the same adhesive used to bond the backfill element to the insulating element.
  • an inventive Dämmstoffbefestiger 1 is shown for attaching an insulating element to an anchoring ground.
  • the insulating element and the anchoring ground are not shown in the figures.
  • the Dämmstoffbefestiger 1 extends along a longitudinal axis L, wherein it has an anchoring portion 2 at its front end in the direction of insertion E.
  • the introduction direction E is the direction in which the insulating fastener 1 according to the invention is introduced into an insulating element or into a borehole which has been drilled through an insulating element into an anchoring base.
  • the front end in the direction of insertion E is therefore the end of the insulating fastener 1, which first comes into contact with the insulating element during insertion.
  • the anchoring portion 2 is configured as expansion dowel 3, so that anchoring portion 2 of the Dämmstoffbefestiger 1 shown for anchoring in a borehole in mineral anchoring grounds, such as concrete or masonry, is suitable.
  • the expansion anchor 3 is radially spread in a borehole by the driving of a spreading and pressed against the borehole wall in the anchoring ground.
  • the expansion element necessary for spreading, in the case of the Dämmstoffbefestigers 1 shown a screw, is not shown in the figures. If an anchoring of the Dämmstoffbefestigers 1 is provided in an anchoring base made of wood, the expansion anchor 3 can be omitted, so that the anchoring portion 2 is formed solely by a screw that can be screwed directly into the wood.
  • the anchoring section 2 may also be formed as a sieve sleeve, can be introduced into the adhesive for anchoring the Dämmstoffbefestigers 1 in the anchoring ground. The list is not final.
  • a helical insulating element 4 is arranged with a first threaded portion 5 on Dämmstoffbefestiger 1.
  • the first threaded portion 5 extends along the longitudinal axis L and has a diameter measured radially to the longitudinal axis L, which is several times larger than the diameter of the anchoring portion 2.
  • the first threaded portion 5 has a diameter of 60 millimeters, while the anchoring portion 2 designed as expansion anchors 3 has a diameter of 8 millimeters. Due to the large diameter of the first threaded portion 5, the insulating element 4 of the Dämmstoffbefestigers invention 1 can also find in a relatively soft insulation, such as mineral wool, a good grip and activate a sufficiently large area for securing the Dämmstoffbefestigers 1 in the insulating element. As in the Figures 3 and 4 1, the first threaded portion 5 extends a little more than one revolution about the longitudinal axis L and is designed to be in a plan view (FIG. FIG. 3 ) forms a kind of holding plate or the projection of a holding plate with a diameter of 60 mm.
  • a plan view FIG. FIG. 3
  • the expansion anchor 3 of the anchoring portion 2 is axially fixed in the direction of the longitudinal axis L, but rotatable about the longitudinal axis L, connected to the insulating material holding element 4.
  • the insulating element 4 is mounted with its front end axially rotatable with the rear end of a compressible shaft portion 6.
  • the front end of the Dämmstoffhalteelements 4 and the rear end of the shaft portion 6 together form a rotary joint 7 FIG. 4 ).
  • the Dämmstoffbefestiger 1 has in the direction of insertion E behind the insulating element 4 a filling element 8, with a hollow cylindrical base body 9, at its rear end an axial opening 10 (FIG. FIG. 3 ) and over the entire lateral surface of the base body 9 distributed circumferential openings 11, 12, 13 has.
  • a screw is driven as a spreading element through the inner cavity of the filling element 8 into the expansion anchor 3 of the anchoring portion 2.
  • a screw is already arranged in the insulating element 4 and the shaft portion 6 and the screw is with a setting tool, which passes through the cavity of the backfill element 8, through the backfill element 8 in the Screwed expansion plug 3.
  • the circumferential openings 11, 12, 13 are arranged on the filling element 8, which are at least partially spaced apart from one another in the longitudinal direction and in the circumferential direction, so that the filling element 8 has peripheral openings 11, 12, 13 over its length, as well as distributed over its circumference, that the adhesive can spread out over the entire filling element 8 from the filling element 8, so that a surface bonding of the filling element 8 with the insulating element is achieved.
  • a polyurethane gun foam is used for the Dämmstoffbefestiger 1 shown in the embodiment. After being dispensed from an adhesive gun, the adhesive expands and cures, causing the adhesive to firmly bond the filler element 8 to the insulating element.
  • a plurality of second threaded portions 14 are arranged, which have the same pitch as the first threaded portion 5, but a diameter smaller than 25 millimeters than the first threaded portion 5.
  • the term "diameter” here means the diameter of a cylinder which circumscribes the second threaded sections 14.
  • the second threaded portions 14 extend only to a quarter of the circumference of the Ver respirllelements 8.
  • the Veryogllelement 8 with the first threaded portion 5 of the Dämmstoffhalteelements 4 zug- and rotatably connected, so that the Ver glycollelement 8 rotates when screwing the insulating element 4 in the insulating material.
  • the second threaded portions 14 are arranged on the backfill element 8 and with the backfill element 8 on the insulating material holding element 4 such that the second threaded portions 14 lie in an insulating element in the thread section cut into the insulating element by the first threaded section 5 and the insulating element not further damaged or weakened by additional cutting.
  • first circumferential openings 11 are arranged behind the second threaded sections 14.
  • first peripheral openings 11 adjoin directly to the second threaded portion 14 lying in the insertion direction in front of the respective first circumferential opening 11, the thread flank 15 extending in the direction of insertion radially to the longitudinal axis L, so that when screwing in the insulating material behind the thread flank 15, a cavity results as filling space, the by adhesive, which emerges from the respective first peripheral opening 11 is filled.
  • the second threaded portions 14 have an axial flank width, ie an extension in the direction of the longitudinal axis L, which is greater than the axial flank width of the first threaded portion 5, so that the thread is widened when screwing the second threaded portions 14 in the axial direction. This results in the insulating element a large-scale positive and cohesive connection between the Dämmstoffbefestiger 1, the adhesive and the insulating element, resulting in a shear-resistant connection between these elements.
  • peripheral openings 12, 13 are arranged between the plurality of second threaded sections 14 not only in the circumferential direction but also in the axial direction.
  • the second circumferential openings 12 are axially, ie the direction of the longitudinal axis L, between the first circumferential openings 11 in the region of the rear thread flanks 15, while third circumferential openings 13 are arranged between front in the screwing direction of the second threaded portions 14.
  • These third circumferential openings 13 are approximately twice as large as the first and second circumferential openings 11, 12, which improves the stability of the filling element 8.
  • the first and second peripheral openings 11, 12 are arranged longitudinally one behind the other in two, with respect to the longitudinal axis L, opposite rows, while the third circumferential openings 13 form two further rows, which are rotated about the longitudinal axis L by 90 ° to the rows of the first and second circumferential openings 11, 12 are arranged.
  • the filling element 8 is attached to the insulating element 4 in the longitudinal direction and connected to this tensile. For this purpose, the filling element 8 is rotated after being placed on the longitudinal axis L, that the first threaded portion 5 rests in a slot-like recess 16 of the backfill element 8 and a pin 17 of the Filling element 8 engages behind the first threaded portion 5 in the manner of a bayonet closure ( FIG. 4 ).
  • the filling element 8 On its rear half, the filling element 8 has five predetermined separating points 18 (FIG. FIGS. 1 . 2 and 3 ), which are formed as circumferential grooves which locally weaken the wall of the base body 9 and subdivide the base body 9 into individual, integrally interconnected sectional elements 19.
  • One or more section elements 19 can be separated from the rest Ver Stirllelement 8 to adjust the length of the Dämmstoffbefestigers 1 to the thickness of the insulating material to be fastened.
  • the axial length of the five rear section elements connected by the predetermined separation points 18 directly or indirectly via the further section elements 19 to a front section 20 of the filling element 8 is in each case 20 millimeters.
  • the Dämmstoffbefestiger 1 shown in the embodiment is designed for a maximum insulation thickness of 280 millimeters.
  • the length can be shortened for example by 60 millimeters and thus adapted to an insulating element with a thickness of 220 millimeters.
  • Dämmstoffbefestiger 1 With the illustrated Dämmstoffbefestiger 1, it is possible to achieve a durable, shear-resistant composite of Dämmstoffbefestiger 1, insulating element and adhesive, which prevents an outer layer of the insulating element of a composite thermal insulation deformed due to the dead weight of the insulating element and it comes to damage the thermal insulation system.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Acoustics & Sound (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)
EP18197862.8A 2017-10-11 2018-10-01 Dispositif de fixation de matériau isolant Withdrawn EP3470591A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017123677 2017-10-11
DE102017129879.7A DE102017129879A1 (de) 2017-10-11 2017-12-14 Dämmstoffbefestiger

Publications (1)

Publication Number Publication Date
EP3470591A1 true EP3470591A1 (fr) 2019-04-17

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ID=63720528

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18197862.8A Withdrawn EP3470591A1 (fr) 2017-10-11 2018-10-01 Dispositif de fixation de matériau isolant

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EP (1) EP3470591A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2213888A2 (fr) * 2009-01-30 2010-08-04 fischerwerke GmbH & Co. KG Support pour matière isolante
DE102010061283A1 (de) 2010-12-16 2012-06-21 Fischerwerke Gmbh & Co. Kg Dämmstoffhalter
EP2628963A1 (fr) * 2012-02-14 2013-08-21 fischerwerke GmbH & Co. KG Cheville de matériau isolant

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2213888A2 (fr) * 2009-01-30 2010-08-04 fischerwerke GmbH & Co. KG Support pour matière isolante
DE102010061283A1 (de) 2010-12-16 2012-06-21 Fischerwerke Gmbh & Co. Kg Dämmstoffhalter
EP2628963A1 (fr) * 2012-02-14 2013-08-21 fischerwerke GmbH & Co. KG Cheville de matériau isolant

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