EP2273020B1 - Two-piece air layer anchor - Google Patents

Two-piece air layer anchor Download PDF

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Publication number
EP2273020B1
EP2273020B1 EP09008454A EP09008454A EP2273020B1 EP 2273020 B1 EP2273020 B1 EP 2273020B1 EP 09008454 A EP09008454 A EP 09008454A EP 09008454 A EP09008454 A EP 09008454A EP 2273020 B1 EP2273020 B1 EP 2273020B1
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EP
European Patent Office
Prior art keywords
inner shell
outer shell
shell portion
air layer
section
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
EP09008454A
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German (de)
French (fr)
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EP2273020A1 (en
Inventor
Ernst-Ulrich Schneider
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.)
Bever Gesellschaft fur Befestigungsteile- Verbindungselemente Mbh
Original Assignee
Bever Gesellschaft fur Befestigungsteile- Verbindungselemente Mbh
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Priority to EP09008454A priority Critical patent/EP2273020B1/en
Publication of EP2273020A1 publication Critical patent/EP2273020A1/en
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    • 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
    • E04B1/38—Connections for building structures in general
    • E04B1/41—Connecting devices specially adapted for embedding in concrete or masonry
    • E04B1/4178—Masonry wall ties
    • E04B1/4185—Masonry wall ties for cavity walls with both wall leaves made of masonry
    • 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
    • E04B1/7608—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 comprising a prefabricated insulating layer, disposed between two other layers or panels
    • E04B1/7612—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 comprising a prefabricated insulating layer, disposed between two other layers or panels in combination with an air space
    • E04B1/7616—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 comprising a prefabricated insulating layer, disposed between two other layers or panels in combination with an air space with insulation-layer locating devices combined with wall ties

Definitions

  • the present invention relates to a two-piece air layer anchor for a two-shell masonry with an inner shell and an outer shell, which are connected by the two-piece air layer anchor.
  • Air-layer anchor for insertion into the inner shell and the outer shell of a two-shell masonry are for example from the DE 297 18 804 U1 and the DE 102 29 115 A1 known.
  • the DE 297 18 804 U1 describes an air layer anchor in which a sheet in the region of a central portion and an outer shell portion is bent inwardly at the side edges, while the inner shell portion has the entire width of the sheet metal piece. Punched tabs are bent out of the plane of the sheet to achieve anchoring in the mortar.
  • the DE 102 29 115 A1 describes an air layer anchor (referred to therein as a "connecting element") which is integrally formed from a piece of flat sheet and whose inner shell portion has at least approximately the same width as the outer shell portion.
  • the air-layer anchor is a piece of sheet folded flat inward in the outer shell portion, bent into a closed cylindrical shape in the middle portion, and partially folded inwardly in the inner shell portion and partially bent inwardly with bulges.
  • Both known from the prior art air layer anchor are made in one piece or in one piece from a sheet and have a substantially flat inner shell portion for insertion into the inner shell of the masonry and a substantially flat outer shell portion for insertion into the outer shell of the masonry.
  • the substantially flat end portions of the air layer anchors ensure sufficient load absorption in one direction only, in particular tension and pressure load absorption. Due to the design known from the prior art, one-piece, made of flat steel air layer anchor can absorb the horizontal forces insufficient. This can adversely affect the necessary non-positive connection between mortar and air layer anchor in the long run.
  • the DE 196 47 344 A1 relates to a retaining anchor, which is used in building construction for the connection of an outer shell with an inner shell of a clam shell wall.
  • the retaining anchor is formed in two parts. The connection of the two parts via a loop-shaped connecting part.
  • the GB 2 268 762 A refers to a two-piece masonry anchor.
  • the inner component of the masonry anchor can be permanently installed and a free end then extends into the cavity between the two-shell masonry.
  • a plurality of holes are arranged in series along the longitudinal axis of the inner component.
  • a corresponding dowel may be inserted into the holes to connect the outer component of the masonry anchor to the inner component.
  • the AU 626687 B2 relates to a two-piece armature having a first flat part and a second wire-shaped part.
  • the wire-shaped part can be connected to the flat part by inserting it into a cylindrical connecting element arranged on the flat part.
  • the WO 92/21831 refers to a two-piece masonry anchor with two individual elements, each of which can be introduced into a brick wall.
  • the insertable into the outer shell of the brick wall element is formed as a flat element.
  • the air layer anchor should also be used in inner shells with a so-called Dünnbettfuge.
  • a masonry with Dünnbettfuge is sometimes referred to as "glued" because the mortar layer between the wall elements is extremely thin, typically from about 1.5 to 2 mm.
  • the inventive two-piece or two-part air layer anchor for a two-shell masonry with an inner shell and an outer shell comprises as first piece or part an inner shell portion for insertion into the inner shell and as a second separate or separable from the first piece or part of an outer shell portion for insertion into the outer shell of the masonry.
  • the inner shell portion and the outer shell portion are made as two separate or separate pieces or parts that can be releasably connected together to form the two-piece air layer anchor.
  • the inner shell portion is preferably formed as a stamped part, which is for example formed integrally from a piece of flat sheet or flat steel and / or punched.
  • the outer shell portion is formed as a wire part, which may have a circular cross-section, wherein also differently shaped cross-sections, such as elliptical or rectangular cross-sections are conceivable.
  • the diameter of the circular cross section is for example 2 to 6 mm, preferably 4 mm.
  • the preferably round shape the cross section of the outer shell portion allows a load bearing (tensile and compressive load) in all directions and thus also in the horizontal direction.
  • the inner shell portion has a length of 95 mm and the outer shell portion has a length of 125 mm, wherein the total length of the two-piece air layer anchor is achieved in particular by changing the length of the outer shell portion.
  • the total length of the air layer anchor is locally adapted to the conditions, such as the distance from the inner shell and outer shell, by changing the length of the outer shell portion.
  • the length of the outer shell section can be varied as desired or, e.g. by selecting an outer shell portion from a plurality of outer shell portions of different lengths, while a fixed or constant length can be used for the inner shell portion.
  • the inner shell section has an inner shell connecting section and the outer shell section has an outer shell connecting section, via which the inner shell section and the outer shell section are releasably connectable to one another.
  • the inner shell portion and outer shell portion are separated from each other.
  • the inner shell connecting portion and the outer shell connecting portion may form-fit with each other at least in one direction, and thus connect the inner shell portion and the outer shell portion to the two-piece air layer anchor.
  • the inner shell connecting portion is formed at the end of the inner shell portion which is not inserted into the inner shell
  • the outer shell connecting portion is formed at the end of the outer shell portion which is not inserted into the outer shell.
  • the inner shell connection portion may include one or more members for being bonded to or receiving the outer shell connection portion.
  • the inner shell connecting portion may have a, preferably circular, recess for receiving the outer shell connecting portion. This is particularly advantageous when the outer shell portion is formed as a wire part with a circular cross-section. If the outer shell section and / or the outer shell connection section have a circular cross section, the outer shell connection section can be inserted into the preferably circular recess of the inner shell connection section and hung there, for example, to enter into a connection with the inner shell section.
  • the shape and / or the diameter of the recess and the shape and / or the diameter of the, preferably tubular, wire part are matched to one another, so that the outer circumference of the wire part can rest on the inner circumference of the recess.
  • the recess may be a bore or another, in particular circular, cut-out, which may have, for example, an edge hole reinforcement for stabilizing the recess and the inner shell connecting portion.
  • the inner shell connecting portion has a guide for guiding and / or stabilizing at least a portion of the outer shell portion, such as the outer shell connecting portion.
  • the guide is preferably formed at the end of the inner shell portion which is not inserted into the inner shell, and is formed by two or more projections or webs which may be integrally formed from the sheet of the inner shell portion and bent up or down perpendicular to the inner shell portion , If the outer shell section is designed, for example, as a wire part with a circular cross section, then the wire part can be guided and received through the guide or between the projections or webs.
  • the at least two perpendicular to the inner shell portion protrusions or webs serve to accommodate and / or stabilize the wire part, but at the same time ensure the desired freedom of movement, for example, to accommodate the Schränkung (opposite movement of masonry shells by thermal influences).
  • the stability of the air layer anchor can also be increased by the nature of the outer shell portion, which is preferably designed as a wire or a shaped as a round body wire part, since the formation of a wire or round body allows at least almost equal load absorption in all directions.
  • the distance between, for example, two webs or projections is preferably matched to the width of the wire part, such as the diameter of the wire part, so that the wire part can be passed through the webs or projections and at least almost rests against the inner sides of the webs or projections.
  • the outer shell connecting section of the outer shell section formed, for example, as a wire part is preferably first guided through the projections matched to the diameter of the wire part (that is, the distance between the projections preferably corresponds at least almost to the diameter of the Wire part or the connecting portion of the wire part, so that the wire part can be guided by the projections) and then received by the preferably circular recess of the inner shell portion connecting portion or hooked into this, to ensure the connection between the outer shell portion and inner shell portion.
  • the inner shell portion for example, formed from a piece of flat sheet or flat steel inner portion, preferably along its longitudinal axis a plurality of punched, for example, two, three, four, five, six or more punched on.
  • the punched holes are circular in shape and have a diameter of 6 to 10 mm, for example 8 mm.
  • the preferably circular punch-outs can be arranged along the longitudinal axis of the inner shell portion such that the respective centers of the circular punch-outs are located on the longitudinal axis of the preferably flat inner shell portion and the punched-outs are spaced from each other.
  • the Ausstanzungsabites in which the punched on the inner shell portion are arranged can be used to be inserted into the joint, such as a Dünnbettfuge, the inner shell, said punched by the better anchoring in the mortar of the Dünnbettfuge and thus a better and more stable anchoring of the Inner shell section in the Dünnbettfuge is achieved.
  • the inner shell portion has a width of 14 to 18 mm, in particular 16 mm. If the inner shell section is formed by a flat piece of sheet metal, the thickness of the sheet piece is, for example, 0.3 mm to 0.7 mm, preferably 0.5 mm.
  • the inner shell portion may also have a counterpressure flap which, for example, may be partially punched out of the inner shell portion formed by a sheet and may be bent up or down perpendicular to the inner shell portion.
  • the counterpressure flap in the opposite direction of the guide, as the at least two projections or webs, bent.
  • the counterpressure flap is in particular formed between the inner shell connecting portion and the punched portion and serves to receive the pressure exerted by the outer shell portion connected to the inner shell portion.
  • the preferably formed as a wire part outer shell portion for example, in the recess of the inner shell portion mounted so pushes the end of the wire part, especially under load, against the back pressure flap. This occurring due to the preferably circular cross section of the wire part punctual Pressure load can be converted by the flat shape of the counter-pressure plate in a flat compressive load and thus reduce deterioration of the inner shell of the masonry.
  • the outer shell connecting portion is formed such that it can enter into communication with the inner shell connecting portion, in particular with the guide and the receptacle of the inner shell connecting portion for forming the two-piece air layer anchor.
  • the outer shell connecting portion which is preferably formed at the end of the outer shell portion which is not inserted into the outer shell, on the shape of the inner shell connecting portion adapted bend, preferably a Z-shaped bend, on.
  • the horizontal components of the Z-shaped bend may extend along or parallel to the inner shell portion and the vertical component of the Z-shaped bend may extend perpendicular to the inner shell portion through the recess of the inner shell connecting portion. to ensure a connection between the inner shell and outer shell section.
  • the preferably wire-shaped outer shell portion may have a wave-shaped end portion, the waves preferably being in the vertical direction, i.e., in the vertical direction. in the direction of the vertical component of the Z-shaped bend.
  • the waveform it is also possible to form the waveform into another, such as a horizontal direction. If the wave-shaped end section is inserted into a joint, such as a thick-bed joint, the outer shell, the wave shape ensures a more stable anchoring of the outer shell section in the mortar layer of the thick-bed joint and thus also a more stable anchoring of the air layer anchor in the outer shell.
  • the inner shell portion when pulling up the inner shell of a clam shell masonry only the inner shell portion can be introduced into a joint of the inner shell and thus hardly, but at least significantly less than a one-piece air layer anchor projecting from the inner shell.
  • the inner shell portion does not have to be bent in order to reduce the risk of injury, so that no additional weak point, possible breakage or predetermined breaking point is generated.
  • the risk of injury without the necessity of bending away of the inner shell portion is reduced in previous pulling up the inner shell.
  • the air layer anchor can be adapted more flexibly to the needs.
  • the more stable wire part in the case of a circular cross-section, can absorb loads in all directions equally well. With a flat sheet-like outer shell section, a load-bearing would only be reliable in one direction, as in the vertical direction, and not in all directions.
  • one-piece, flat, formed of sheet metal air layer anchor can not absorb the horizontal forces sufficient and thus loosens in the mortar joint.
  • An example of a wire-shaped outer shell section ensures a load bearing, such as the inclusion of a tensile and / or compressive load, in all directions.
  • the outer shell portion may also be made of a flat sheet for introduction into a thin-bed joint
  • the inner shell portion may be formed as a wire member having a circular cross-section for insertion into a thick-bed joint.
  • the recess and the guide in the outer shell portion and the Z-shaped bend in the inner shell portion would be formed to connect the outer shell portion and the inner shell portion with each other.
  • FIG. 1 shows a two-piece air layer anchor 1 inserted into a clam shell masonry with an inner shell 100 and an outer shell 200 according to an embodiment of the present invention.
  • an inserted into the inner shell 100 of the masonry inner shell portion 10 of the air layer anchor 1 as at least partially flat sheet metal part is formed, which is inserted into a Dünnbettfuge 110 of the inner shell 100.
  • An inserted into the outer shell 200 of the masonry outer shell portion 20 of the air layer anchor 1 is formed as a wire member having a circular cross-section which is inserted on one end side in a thick bed joint 210 of the outer shell 200 and is connected on its other end side with the formed of a sheet metal part inner shell portion 10 , On the formed as a wire part outer shell portion 20, an insulating plate 300 is applied, which rests against the inner shell 100 of the masonry.
  • the in FIG. 1 shown two-piece air-layer anchor 1 connects the inner shell 100 of a masonry on the insulation board 300 and an air gap or an air layer 400 with the outer shell 200 of the masonry.
  • a clamping disk 23 and a drip disk 24 are arranged on the outer shell section 20 formed as a wire part. Via the drip disk 24, condensation water formed in the air layer 400 can drip off, so that an influence on the insulation board 300 by condensed water is reduced.
  • the insulation board 300 is clamped or pressed against the inner shell 100 in order to achieve better insulation.
  • the at least partially formed flat sheet metal part is inserted into a thin-bed joint 110 of the inner shell 100 and is the wire part in a thick-bed joint 210 of the outer shell 200 is inserted. Due to the shape and thickness of the wire part, a higher and more uniform load bearing is achieved than with a sheet metal part.
  • the inner shell portion 10 and the outer shell portion 20 are detachably connected to the two-piece air layer anchor 1.
  • the individual elements of the inner shell portion 10, the inner shell connecting portion 11, the outer shell portion 20 and the outer shell portion connecting portion 21 will be described with reference to FIGS FIGS. 2a, 2b, 2c and 3 be described in more detail.
  • FIGS. 2a to 2c is formed as a sheet metal part inner shell portion 10 of in FIG. 1 shown two-piece air layer anchor 1 individually, shown as a separate piece.
  • the inner shell section 10 has, in its inner shell section connecting section 11 as connecting elements, two upwardly bent projections 11a having a length of 6.5 mm serving as a guide of the outer shell section 20 and a bore 11b having a diameter of 4.2 mm provided with an edge hole reinforcement on.
  • the length of the sheet metal part 95 mm and the width of the sheet metal part 16 mm are formed as a sheet metal part inner shell portion 10 of in FIG. 1 shown two-piece air layer anchor 1 individually, shown as a separate piece.
  • the inner shell section 10 has, in its inner shell section connecting section 11 as connecting elements, two upwardly bent projections 11a having a length of 6.5 mm serving as a guide of the outer shell section 20 and a bore 11b having a diameter of 4.2 mm provided with an edge hole reinforcement on.
  • FIG. 2a As in FIG. 2a are shown, along the longitudinal axis of the sheet metal part circular punched holes 13 are formed with a diameter of 8 mm.
  • the portion of the sheet metal part having the circular cutouts 13 is as shown FIG. 1 seen flat and serves to be inserted into the Dünnbettfuge 110 of the inner shell 100 for anchoring the sheet metal part with the inner shell 100.
  • About the circular punch-outs 13 ensures that the mortar connects above and below the sheet metal part through the sheet metal part together, which ensures a more stable and firmer anchoring of the sheet metal part in the inner shell 100.
  • the counter pressure flap 12 is punched out of the sheet metal part, bent downwards perpendicular to the sheet metal part and has a length of 10.3 mm.
  • the counter-pressure plate 12 serves to absorb the pressure exerted by the wire portion point pressure to deliver as a surface pressure on the inner shell 100 and thus to reduce deterioration of the inner shell 100 of the masonry by punctual load.
  • FIG. 1 to recognize only the inner shell connecting portion 11 and the back pressure plate 12 from the inner shell 100 before, while the remaining part of the inner shell portion 10 is located in the Dünnbettfuge 110 of the inner shell 100.
  • the bent up at the end of the sheet metal part perpendicular to the sheet metal part two projections 11a have a length of 6.5 mm.
  • the distance between the two protrusions 11a is 4.2 mm, so that the wire part after FIG. 3 has a diameter of 4 mm, can be passed through the projections 11 a and can be absorbed and stabilized by these.
  • the wire part is guided through the formed in the sheet metal part, for example by punching bore 11b, which has a, also to the diameter of the wire part of 4 mm tuned diameter of 4.2 mm, and so in the Sheet metal part hung or anchored.
  • FIG. 3 shows the formed as a sheet metal part outer shell portion 20 of the air layer anchor 1 FIG. 1 as a separate piece. How out FIG. 3 to recognize the diameter of the circular cross-section of the wire part 4 mm and the total length of the wire part 125 mm. A wavy, between 48 and 52 mm long section 22 is formed at a first end of the wire part, which, as shown Fig. 1 can be seen, in the thick bed joint 210 of the outer shell 200 is inserted. By the waveform, a firmer and more stable anchoring of the wire part in the thick-bed joint 210 is achieved.
  • the second end of the outer shell portion 20 has along a portion of 10 mm along the longitudinal axis of the wire part, a bent portion 21 as a connecting portion which assumes 12 mm perpendicular to the longitudinal axis of the wire portion.
  • the bent portion 21 is bent in the shape of the letter "Z" and, due to its shape and dimensions, can be guided by the projections 11a of the sheet metal part and the bore 11b of the sheet metal part and connected to the sheet metal part by hanging.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Acoustics & Sound (AREA)
  • Devices Affording Protection Of Roads Or Walls For Sound Insulation (AREA)

Description

Die vorliegende Erfindung betrifft einen zweistückigen bzw. zweiteiligen Luftschichtanker für ein zweischaliges Mauerwerk mit einer Innenschale und einer Außenschale, die durch den zweistückigen Luftschichtanker verbunden sind.The present invention relates to a two-piece air layer anchor for a two-shell masonry with an inner shell and an outer shell, which are connected by the two-piece air layer anchor.

Luftschichtanker zum Einfügen in die Innenschale und die Außenschale eines zweischaligen Mauerwerks sind zum Beispiel aus der DE 297 18 804 U1 und der DE 102 29 115 A1 bekannt.Air-layer anchor for insertion into the inner shell and the outer shell of a two-shell masonry are for example from the DE 297 18 804 U1 and the DE 102 29 115 A1 known.

Die DE 297 18 804 U1 beschreibt einen Luftschichtanker, bei dem ein Blech im Bereich eines Mittelabschnittes und eines Außenschalenabschnittes an den Seitenkanten nach innen gebogen ist, während der Innenschalenabschnitt die gesamte Breite des Blechstückes aufweist. Ausgestanzte Laschen sind aus der Ebene des Bleches herausgebogen, um eine Verankerung im Mörtel zu erreichen.The DE 297 18 804 U1 describes an air layer anchor in which a sheet in the region of a central portion and an outer shell portion is bent inwardly at the side edges, while the inner shell portion has the entire width of the sheet metal piece. Punched tabs are bent out of the plane of the sheet to achieve anchoring in the mortar.

Die DE 102 29 115 A1 beschreibt einen Luftschichtanker (dort als "Verbindungselement" bezeichnet), das einstückig aus einem Stück Flachblech geformt ist und dessen Innenschalenabschnitt zumindest annähernd die gleiche Breite wie der Außenschalenabschnitt aufweist. Der Luftschichtanker besteht aus einem Stück Blech, das in dem Außenschalenabschnitt flach nach innen gefaltet ist, in dem Mittelabschnitt zu einer geschlossenen Zylinderform gebogen ist, und in dem Innenschalenabschnitt teilweise flach nach innen gefaltet ist und teilweise mit Ausbauchungen nach innen gebogen ist.The DE 102 29 115 A1 describes an air layer anchor (referred to therein as a "connecting element") which is integrally formed from a piece of flat sheet and whose inner shell portion has at least approximately the same width as the outer shell portion. The air-layer anchor is a piece of sheet folded flat inward in the outer shell portion, bent into a closed cylindrical shape in the middle portion, and partially folded inwardly in the inner shell portion and partially bent inwardly with bulges.

Beide aus dem Stand der Technik bekannten Luftschichtanker sind einstückig bzw. einteilig aus einem Blech gefertigt und weisen einen im Wesentlichen flachen Innenschalenabschnitt zum Einfügen in die Innenschale des Mauerwerks und einen im Wesentlichen flachen Außenschalenabschnitt zum Einfügen in die Außenschale des Mauerwerks auf. Die im Wesentlichen flachen Endabschnitte der Luftschichtanker gewährleisten jedoch nur in einer Richtung eine ausreichende Lastaufnahme, insbesondere Zug- und Druckbelastungsaufnahme. Bauartbedingt können die aus dem Stand der Technik bekannten, einteiligen, aus Flachstahl gefertigten Luftschichtanker die horizontalen Kräfte nur unzureichend aufnehmen. Dies kann auf lange Sicht die notwendige kraftschlüssige Verbindung zwischen Mörtel und Luftschichtanker negativ beeinträchtigen.Both known from the prior art air layer anchor are made in one piece or in one piece from a sheet and have a substantially flat inner shell portion for insertion into the inner shell of the masonry and a substantially flat outer shell portion for insertion into the outer shell of the masonry. However, the substantially flat end portions of the air layer anchors ensure sufficient load absorption in one direction only, in particular tension and pressure load absorption. Due to the design known from the prior art, one-piece, made of flat steel air layer anchor can absorb the horizontal forces insufficient. This can adversely affect the necessary non-positive connection between mortar and air layer anchor in the long run.

Nach Hochziehen der Innenschale und Einfügen des Luftschichtankers in die Innenschale steht bei Verwendung der aus dem Stand der Technik bekannten Luftschichtanker ein Großteil des Luftschichtankers aus der Innenschale vor, was eine beträchtliche Verletzungsgefahr mit sich bringt. Um die Verletzungsgefahr zu verringern, wird das vorstehende Teil des Luftschichtankers für gewöhnlich in vertikaler Richtung nach oben oder unten gebogen. Vor dem Aufbringen der Isolierung und dem Einfügen des Luftschichtankers in die Außenschale muss der Luftschichtanker wieder in seine horizontale Ausgangsanordnung gebogen werden, was zu einer Schwachstelle, möglichen Bruchstelle oder Sollbruchstelle an der Biegestelle führt. Die DE 196 47 344 A1 betrifft einen Halteanker, der im Hochbau für die Verbindung einer Außenschale mit einer Innenschale einer zweischaligen Wand verwendet wird. Der Halteanker ist zweiteilig ausgebildet. Die Verbindung der beiden Teile erfolgt über ein ösenförmiges Verbindungsteil.After pulling up the inner shell and inserting the air layer anchor into the inner shell, when using the air layer anchor known from the prior art, a large part of the air layer anchor from the inner shell, which entails a considerable risk of injury. In order to reduce the risk of injury, the protruding part of the air layer anchor is usually bent upwards or downwards in a vertical direction. Before applying the insulation and inserting the air layer anchor in the outer shell of the air layer anchor must be bent back into its horizontal output arrangement, resulting in a weak point, possible breakage or breaking point at the bending point. The DE 196 47 344 A1 relates to a retaining anchor, which is used in building construction for the connection of an outer shell with an inner shell of a clam shell wall. The retaining anchor is formed in two parts. The connection of the two parts via a loop-shaped connecting part.

Die GB 2 268 762 A bezieht sich auf einen zweiteiligen Mauerwerksanker. Die Innenkomponente des Mauerwerksankers kann fest eingebaut werden und ein freies Ende erstreckt sich dann in den Hohlraum zwischen dem zweischaligen Mauerwerk. In der Innenkomponente ist eine Vielzahl von Löchern in Reihe entlang der Längsachse der Innenkomponente angeordnet. Ein entsprechender Dübel kann in die Löcher eingeführt werden, um die Außenkomponente des Mauerwerksankers mit der Innenkomponente zu verbinden.The GB 2 268 762 A refers to a two-piece masonry anchor. The inner component of the masonry anchor can be permanently installed and a free end then extends into the cavity between the two-shell masonry. In the inner component, a plurality of holes are arranged in series along the longitudinal axis of the inner component. A corresponding dowel may be inserted into the holes to connect the outer component of the masonry anchor to the inner component.

Die AU 626687 B2 betrifft einen zweistückigen Anker, der ein erstes flaches Teil sowie ein zweites drahtförmiges Teil aufweist. Das drahtförmige Teil kann mit dem flachen Teil verbunden werden, indem es in ein an dem flachen Teil angeordnetes zylinderförmiges Verbindungselement eingeführt wird.The AU 626687 B2 relates to a two-piece armature having a first flat part and a second wire-shaped part. The wire-shaped part can be connected to the flat part by inserting it into a cylindrical connecting element arranged on the flat part.

Die WO 92/21831 bezieht sich auf einen zweistückigen Mauerwerksanker mit zwei einzelnen Elementen, die jeweils in eine Ziegelmauer einbringbar sind. Das in die Außenschale der Ziegel mauer einbringbare Element ist als flaches Element geformt. Es ist eine Aufgabe der vorliegenden Erfindung, einen stabileren Luftschichtanker bereitzustellen, bei welchem zudem die durch den Luftschichtanker gegebene Verletzungsgefahr beim Hochziehen der Außenschale verringert wird. Insbesondere soil der Luftschichtanker auch bei Innenschalen mit einer sogenannten Dünnbettfuge einsetzbar sein. Ein Mauerwerk mit Dünnbettfuge wird bisweilen auch als "geklebt" bezeichnet, da die Mörtellage zwischen den Mauerelementen extrem dünn ist, typischerweise von ca. 1,5 bis 2 mm.The WO 92/21831 refers to a two-piece masonry anchor with two individual elements, each of which can be introduced into a brick wall. The insertable into the outer shell of the brick wall element is formed as a flat element. It is an object of the present invention to provide a more stable air layer anchor, in which, moreover, the risk of injury given by the air layer anchor when pulling up the outer shell is reduced. In particular, the air layer anchor should also be used in inner shells with a so-called Dünnbettfuge. A masonry with Dünnbettfuge is sometimes referred to as "glued" because the mortar layer between the wall elements is extremely thin, typically from about 1.5 to 2 mm.

Diese Aufgabe wird durch den Gegenstand der unabhängigen Ansprüche gelöst. Vorteilhafte Ausführungsformen ergeben sich aus den abhängigen Ansprüchen.This object is solved by the subject matter of the independent claims. Advantageous embodiments will be apparent from the dependent claims.

Der erfindungsgemäße zweistückige bzw. zweiteilige Luftschichtanker für ein zweischaliges Mauerwerk mit einer Innenschale und einer Außenschale umfasst als erstes Stück bzw. Teil einen Innenschalenabschnitt zum Einfügen in die Innenschale und als zweites separates oder von dem ersten Stück trennbares Stück bzw. Teil einen Außenschalenabschnitt zum Einfügen in die Außenschale des Mauerwerks. Der Innenschalenabschnitt und der Außenschalenabschnitt sind als zwei getrennte oder separate Stücke oder Teile gefertigt, die zur Ausbildung des zweistückigen Luftschichtankers lösbar miteinander verbunden werden können.The inventive two-piece or two-part air layer anchor for a two-shell masonry with an inner shell and an outer shell comprises as first piece or part an inner shell portion for insertion into the inner shell and as a second separate or separable from the first piece or part of an outer shell portion for insertion into the outer shell of the masonry. The inner shell portion and the outer shell portion are made as two separate or separate pieces or parts that can be releasably connected together to form the two-piece air layer anchor.

Der Innenschalenabschnitt ist dabei vorzugsweise als Stanzteil ausgebildet, welches beispielsweise einstückig aus einem Stück Flachblech oder Flachstahl geformt und/oder gestanzt ist. Der Außenschalenabschnitt ist als Drahtteil ausgebildet, welches einen kreisförmigen Querschnitt aufweisen kann, wobei auch anders geformte Querschnitte, wie elliptische oder rechteckige Querschnitte denkbar sind. Der Durchmesser des kreisförmigen Querschnitts liegt beispielsweise bei 2 bis 6 mm, vorzugsweise bei 4 mm. Die vorzugsweise runde Form des Querschnitts des Außenschalenabschnitts ermöglicht eine Lastaufnahme (Zug- und Druckbelastung) in alle Richtungen und damit auch in horizontaler Richtung.The inner shell portion is preferably formed as a stamped part, which is for example formed integrally from a piece of flat sheet or flat steel and / or punched. The outer shell portion is formed as a wire part, which may have a circular cross-section, wherein also differently shaped cross-sections, such as elliptical or rectangular cross-sections are conceivable. The diameter of the circular cross section is for example 2 to 6 mm, preferably 4 mm. The preferably round shape the cross section of the outer shell portion allows a load bearing (tensile and compressive load) in all directions and thus also in the horizontal direction.

Bevorzugt weist der Innenschalenabschnitt eine Länge von 95 mm und der Außenschalenabschnitt eine Länge von 125 mm auf, wobei die Gesamtlänge des zweistückigen Luftschichtankers insbesondere durch eine Veränderung der Länge des Außenschalenabschnitts erreicht wird. Vorzugsweise wird die Gesamtlänge des Luftschichtankers vor Ort auf die Verhältnisse, beispielsweise den Abstand von Innenschale und Außenschale, durch Veränderung der Länge des Außenschalenabschnitts angepasst. Die Länge des Außenschalenabschnitts kann beliebig variierbar sein oder, z.B. durch Auswahl eines Außenschalenabschnitts aus einer Vielzahl von Außenschalenabschnitten verschiedener Längen, beliebig gewählt werden, während eine feste oder konstante Länge für den Innenschalenabschnitt verwendet werden kann.Preferably, the inner shell portion has a length of 95 mm and the outer shell portion has a length of 125 mm, wherein the total length of the two-piece air layer anchor is achieved in particular by changing the length of the outer shell portion. Preferably, the total length of the air layer anchor is locally adapted to the conditions, such as the distance from the inner shell and outer shell, by changing the length of the outer shell portion. The length of the outer shell section can be varied as desired or, e.g. by selecting an outer shell portion from a plurality of outer shell portions of different lengths, while a fixed or constant length can be used for the inner shell portion.

Weiter weisen der Innenschalenabschnitt einen Innenschalen-Verbindungsabschnitt und der Außenschalenabschnitt einen Außenschalen-Verbindungsabschnitt auf, über welche der Innenschalenabschnitt und der Außenschalenabschnitt lösbar miteinander verbindbar sind. Durch die Verbindung des Außenschalenabschnitts mit dem Innenschalenabschnitt kann der zweistückige Luftschichtanker gebildet werden, dessen Innenschalenabschnitt und Außenschalenabschnitt voneinander trennbar sind. In dem verbundenen Zustand können der Innenschalen-Verbindungsabschnitt und der Außenschalen-Verbindungsabschnitt zumindest in eine Richtung einen Formschluss miteinander eingehen und somit den Innenschalenabschnitt und den Außenschalenabschnitt zu dem zweistückigen Luftschichtanker verbinden. Bevorzugt ist der Innenschalen-Verbindungsabschnitt an dem Ende des Innenschalenabschnitts ausgebildet, das nicht in die Innenschale eingefügt wird, und ist der Außenschalen-Verbindungsabschnitt an dem Ende des Außenschalenabschnitts ausgebildet, das nicht in die Außenschale eingefügt wird.Furthermore, the inner shell section has an inner shell connecting section and the outer shell section has an outer shell connecting section, via which the inner shell section and the outer shell section are releasably connectable to one another. By the connection of the outer shell portion with the inner shell portion of the two-piece air layer anchor can be formed, the inner shell portion and outer shell portion are separated from each other. In the connected state, the inner shell connecting portion and the outer shell connecting portion may form-fit with each other at least in one direction, and thus connect the inner shell portion and the outer shell portion to the two-piece air layer anchor. Preferably, the inner shell connecting portion is formed at the end of the inner shell portion which is not inserted into the inner shell, and the outer shell connecting portion is formed at the end of the outer shell portion which is not inserted into the outer shell.

Der Innenschalen-Verbindungsabschnitt kann ein oder mehrere Elemente zur Verbdingung mit oder zur Aufnahme des Außenschalen-Verbindungsabschnitts aufweisen. So kann der Innenschalen-Verbindungsabschnitt eine, vorzugsweise kreisförmige, Ausnehmung zur Aufnahme des Außenschalen-Verbindungsabschnitts aufweisen. Dies ist insbesondere dann vorteilhaft, wenn der Außenschalenabschnitt als Drahtteil mit einem kreisförmigen Querschnitt ausgebildet ist. Weist der Außenschalenabschnitt und/oder der Außenschalen-Verbindungsabschnitt einen kreisförmigen Querschnitt auf, kann der Außenschalen-Verbindungsabschnitt in die vorzugsweise kreisförmige Ausnehmung des Innenschalen-Verbindungsabschnitts eingeführt und dort beispielsweise eingehängt werden, um eine Verbindung mit dem Innenschalenabschnitt einzugehen. Bevorzugt sind dabei die Form und/oder der Durchmesser der Ausnehmung und die Form und/oder der Durchmesser des, vorzugsweise rohrförmigen, Drahtteils aufeinander abgestimmt, so dass der Außenumfang des Drahtteils an dem Innenumfang der Ausnehmung anliegen kann. Die Ausnehmung kann eine Bohrung oder eine andere insbesondere kreisförmige Ausstanzung sein, die beispielsweise eine Randlochverstärkung zur Stabilisierung der Ausnehmung und des Innenschalen-Verbindungsabschnitts aufweisen kann.The inner shell connection portion may include one or more members for being bonded to or receiving the outer shell connection portion. Thus, the inner shell connecting portion may have a, preferably circular, recess for receiving the outer shell connecting portion. This is particularly advantageous when the outer shell portion is formed as a wire part with a circular cross-section. If the outer shell section and / or the outer shell connection section have a circular cross section, the outer shell connection section can be inserted into the preferably circular recess of the inner shell connection section and hung there, for example, to enter into a connection with the inner shell section. Preferably, the shape and / or the diameter of the recess and the shape and / or the diameter of the, preferably tubular, wire part are matched to one another, so that the outer circumference of the wire part can rest on the inner circumference of the recess. The recess may be a bore or another, in particular circular, cut-out, which may have, for example, an edge hole reinforcement for stabilizing the recess and the inner shell connecting portion.

Zudem weist der Innenschalen-Verbindungsabschnitt eine Führung zum Führen und/oder Stabilisieren zumindest eines Bereichs des Außenschalenabschnitts, wie beispielsweise des Außenschalen-Verbindungsabschnitts, auf. Die Führung ist bevorzugt an dem Ende des Innenschalenabschnitts gebildet, das nicht in die Innenschale eingefügt wird, und ist durch zwei oder mehr Vorsprünge oder Stege gebildet, welche einstückig aus dem Blech des Innenschalenabschnitts gefertigt und senkrecht zu dem Innenschalenabschnitt nach oben oder unten gebogen sein können. Ist der Außenschalenabschnitt beispielsweise als Drahtteil mit einem kreisförmigen Querschnitt ausgebildet, so kann das Drahtteil durch die Führung oder zwischen den Vorsprüngen oder Stegen hindurch geführt und aufgenommen werden. Die mindestens zwei senkrecht zu dem Innenschalenabschnitt stehenden Vorsprünge oder Stege dienen dabei zur Aufnahme und/oder Stabilisierung des Drahtteils, gewährleisten jedoch gleichzeitig die gewünschte Bewegungsfreiheit beispielsweise zur Aufnahme der Schränkung (gegenläufige Bewegung der Mauerwerksschalen durch thermische Einflüsse). Die Stabilität des Luftschichtankers kann auch durch die Beschaffenheit des Außenschalenabschnitts, der vorzugsweise als Draht oder als ein als Rundkörper geformtes Drahtteil ausgebildet ist, erhöht werden, da die Ausbildung als Draht oder Rundkörper eine zumindest nahezu gleiche Lastaufnahme in alle Richtungen ermöglicht. Der Abstand zwischen den beispielsweise zwei Stegen oder Vorsprüngen ist dabei bevorzugt auf die Breite des Drahtteils, wie den Durchmesser des Drahtteils, abgestimmt, so dass das Drahtteil durch die Stege oder Vorsprünge hindurchgeführt werden kann und zumindest nahezu an den Innenseiten der Stege oder Vorsprünge anliegt.In addition, the inner shell connecting portion has a guide for guiding and / or stabilizing at least a portion of the outer shell portion, such as the outer shell connecting portion. The guide is preferably formed at the end of the inner shell portion which is not inserted into the inner shell, and is formed by two or more projections or webs which may be integrally formed from the sheet of the inner shell portion and bent up or down perpendicular to the inner shell portion , If the outer shell section is designed, for example, as a wire part with a circular cross section, then the wire part can be guided and received through the guide or between the projections or webs. The at least two perpendicular to the inner shell portion protrusions or webs serve to accommodate and / or stabilize the wire part, but at the same time ensure the desired freedom of movement, for example, to accommodate the Schränkung (opposite movement of masonry shells by thermal influences). The stability of the air layer anchor can also be increased by the nature of the outer shell portion, which is preferably designed as a wire or a shaped as a round body wire part, since the formation of a wire or round body allows at least almost equal load absorption in all directions. The distance between, for example, two webs or projections is preferably matched to the width of the wire part, such as the diameter of the wire part, so that the wire part can be passed through the webs or projections and at least almost rests against the inner sides of the webs or projections.

Zur Verbindung des Außenschalenabschnitts mit dem Innenschalenabschnitt wird der Außenschalen-Verbindungsabschnitt des beispielsweise als Drahtteil ausgebildeten Außenschalenabschnitts bevorzugt zunächst durch die auf den Durchmesser des Drahtteils abgestimmten Vorsprünge geführt (das bedeutet, der Abstand zwischen den Vorsprüngen entspricht vorzugsweise zumindest nahezu dem Durchmesser des Drahtteils oder des Verbindungsabschnitts des Drahtteils, so dass das Drahtteil durch die Vorsprünge geführt werden kann) und anschließend durch die vorzugsweise kreisförmige Ausnehmung des Innenschalenabschnitt-Verbindungsabschnitts aufgenommen oder in diese eingehängt, um die Verbindung zwischen Außenschalenabschnitt und Innenschalenabschnitt zu gewährleisten.To connect the outer shell section to the inner shell section, the outer shell connecting section of the outer shell section formed, for example, as a wire part is preferably first guided through the projections matched to the diameter of the wire part (that is, the distance between the projections preferably corresponds at least almost to the diameter of the Wire part or the connecting portion of the wire part, so that the wire part can be guided by the projections) and then received by the preferably circular recess of the inner shell portion connecting portion or hooked into this, to ensure the connection between the outer shell portion and inner shell portion.

Der Innenschalenabschnitt, beispielsweise der aus einem Stück Flachblech oder Flachstahl geformte Innenabschnitt, weist bevorzugt entlang seiner Längsachse eine Vielzahl von Ausstanzungen, beispielsweise zwei, drei, vier, fünf, sechs oder mehr Ausstanzungen auf. Bevorzugt sind die Ausstanzungen kreisförmig ausgebildet und weisen einen Durchmesser von 6 bis 10 mm, beispielsweise 8 mm, auf. Die bevorzugt kreisförmigen Ausstanzungen können derart entlang der Längsachse des Innenschalenabschnitts angeordnet sein, dass die jeweiligen Mittelpunkte der kreisförmigen Ausstanzungen auf der Längsachse des vorzugsweise flachen Innenschalenabschnitts liegen und die Ausstanzungen voneinander beabstandet sind. Der Ausstanzungsabschnitt in dem die Ausstanzungen auf dem Innenschalenabschnitt angeordnet sind, kann dazu verwendet werden, in die Fuge, beispielsweise eine Dünnbettfuge, der Innenschale eingefügt zu werden, wobei durch die Ausstanzungen eine bessere Verankerung im Mörtel der Dünnbettfuge und damit eine bessere und stabilere Verankerung des Innenschalenabschnitts in der Dünnbettfuge erreicht wird.The inner shell portion, for example, formed from a piece of flat sheet or flat steel inner portion, preferably along its longitudinal axis a plurality of punched, for example, two, three, four, five, six or more punched on. Preferably, the punched holes are circular in shape and have a diameter of 6 to 10 mm, for example 8 mm. The preferably circular punch-outs can be arranged along the longitudinal axis of the inner shell portion such that the respective centers of the circular punch-outs are located on the longitudinal axis of the preferably flat inner shell portion and the punched-outs are spaced from each other. The Ausstanzungsabschnitt in which the punched on the inner shell portion are arranged, can be used to be inserted into the joint, such as a Dünnbettfuge, the inner shell, said punched by the better anchoring in the mortar of the Dünnbettfuge and thus a better and more stable anchoring of the Inner shell section in the Dünnbettfuge is achieved.

Vorzugsweise weist der Innenschalenabschnitt eine Breite von 14 bis 18 mm, insbesondere 16 mm, auf. Ist der Innenschalenabschnitt durch ein flaches Blechstück gebildet, beträgt die Stärke des Blechstücks beispielsweise 0,3 mm bis 0,7 mm, vorzugsweise 0,5 mm.Preferably, the inner shell portion has a width of 14 to 18 mm, in particular 16 mm. If the inner shell section is formed by a flat piece of sheet metal, the thickness of the sheet piece is, for example, 0.3 mm to 0.7 mm, preferably 0.5 mm.

Der Innenschalenabschnitt kann auch eine Gegendrucklasche aufweisen, die zum Beispiel aus dem durch ein Blech gebildeten Innenschalenabschnitt teilweise ausgestanzt werden und senkrecht zu dem Innenschalenabschnitt nach unten oder oben gebogen sein kann. Bevorzugt ist die Gegendrucklasche in die Gegenrichtung der Führung, wie der mindestens zwei Vorsprünge oder Stege, gebogen. Die Gegendrucklasche ist insbesondere zwischen dem Innenschalen-Verbindungsabschnitt und dem Ausstanzungsabschnitt ausgebildet und dient zur Aufnahme des von dem mit dem Innenschalenabschnitt verbundenen Außenschalenabschnitt ausgeübten Drucks. Ist der vorzugsweise als Drahtteil ausgebildete Außenschalenabschnitt beispielsweise in die Ausnehmung des Innenschalenabschnitts eingehängt, so drückt das Ende des Drahtteils, insbesondere bei Belastung, gegen die Gegendrucklasche. Diese auf Grund des vorzugsweise kreisförmigen Querschnitts des Drahtteils auftretende punktuelle Druckbelastung kann durch die flächige Form der Gegendrucklasche in eine flächige Druckbelastung umgewandelt werden und so eine Beeinträchtigung der Innenschale des Mauerwerks verringern.The inner shell portion may also have a counterpressure flap which, for example, may be partially punched out of the inner shell portion formed by a sheet and may be bent up or down perpendicular to the inner shell portion. Preferably, the counterpressure flap in the opposite direction of the guide, as the at least two projections or webs, bent. The counterpressure flap is in particular formed between the inner shell connecting portion and the punched portion and serves to receive the pressure exerted by the outer shell portion connected to the inner shell portion. If the preferably formed as a wire part outer shell portion, for example, in the recess of the inner shell portion mounted so pushes the end of the wire part, especially under load, against the back pressure flap. This occurring due to the preferably circular cross section of the wire part punctual Pressure load can be converted by the flat shape of the counter-pressure plate in a flat compressive load and thus reduce deterioration of the inner shell of the masonry.

Der Außenschalen-Verbindungsabschnitt ist derart ausgebildet, dass er mit dem Innenschalen-Verbindungsabschnitt, insbesondere mit der Führung und der Aufnahme des Innenschalen-Verbindungsabschnitts, eine Verbindung zur Ausbildung des zweistückigen Luftschichtankers eingehen kann. Hierzu weist der Außenschalen-Verbindungsabschnitt, der bevorzugt an dem Ende des Außenschalenabschnitts ausgebildet ist, das nicht in die Außenschale eingefügt wird, eine auf die Form des Innenschalen-Verbindungsabschnitts angepasste Biegung, vorzugsweise eine Z-förmige Biegung, auf. Nach Einhängen des Außenschalen-Verbindungsabschnitts in den Innenschalen-Verbindungsabschnitts können die horizontalen Komponenten der Z-förmigen Biegung entlang oder parallel zu dem Innenschalenabschnitt verlaufen und die vertikale Komponente der Z-förmigen Biegung kann senkrecht zu dem Innenschalenabschnitt durch die Ausnehmung des Innenschalen-Verbindungsabschnitts verlaufen, um eine Verbindung zwischen dem Innenschalen- und Außenschalenabschnitt zu gewährleisten.The outer shell connecting portion is formed such that it can enter into communication with the inner shell connecting portion, in particular with the guide and the receptacle of the inner shell connecting portion for forming the two-piece air layer anchor. For this purpose, the outer shell connecting portion, which is preferably formed at the end of the outer shell portion which is not inserted into the outer shell, on the shape of the inner shell connecting portion adapted bend, preferably a Z-shaped bend, on. After suspending the outer shell connecting portion in the inner shell connecting portion, the horizontal components of the Z-shaped bend may extend along or parallel to the inner shell portion and the vertical component of the Z-shaped bend may extend perpendicular to the inner shell portion through the recess of the inner shell connecting portion. to ensure a connection between the inner shell and outer shell section.

An seinem anderen, in die Außenschale einzubringenden Ende, kann der vorzugsweise drahtförmige Außenschalenabschnitt einen wellenförmigen Endabschnitt aufweisen, wobei sich die Wellen vorzugsweise in vertikaler Richtung, d.h. in Richtung der vertikalen Komponente der Z-förmigen Biegung, erstrecken. Jedoch ist auch eine Ausbildung der Wellenform in eine andere, wie eine horizontale Richtung möglich. Wird der wellenförmige Endabschnitt in eine Fuge, wie eine Dickbettfuge, der Außenschale eingefügt, so gewährleistet die Wellenform eine stabilere Verankerung des Außenschalenabschnitts in der Mörtelschicht der Dickbettfuge und damit auch eine stabilere Verankerung des Luftschichtankers in der Außenschale.At its other end to be introduced into the outer shell, the preferably wire-shaped outer shell portion may have a wave-shaped end portion, the waves preferably being in the vertical direction, i.e., in the vertical direction. in the direction of the vertical component of the Z-shaped bend. However, it is also possible to form the waveform into another, such as a horizontal direction. If the wave-shaped end section is inserted into a joint, such as a thick-bed joint, the outer shell, the wave shape ensures a more stable anchoring of the outer shell section in the mortar layer of the thick-bed joint and thus also a more stable anchoring of the air layer anchor in the outer shell.

Die Zweistückigkeit bzw. Zweiteiligkeit des erfindungsgemäßen Luftschichtankers gewährleistet, dass beim Hochziehen der Innenschale eines zweischaligen Mauerwerks zunächst nur der Innenschalenabschnitt in eine Fuge der Innenschale eingebracht werden kann und somit kaum, zumindest jedoch deutlich weniger als ein einstückiger Luftschichtanker, aus der Innenschale vorsteht. Dies führt zu einer deutlichen Verringerung der Verletzungsgefahr aufgrund vorstehender Teile des Luftschichtankers. Zudem muss der Innenschalenabschnitt nicht gebogen werden, um die Verletzungsgefahr zu verringern, so dass keine zusätzliche Schwachstelle, mögliche Bruchstelle oder Sollbruchstelle erzeugt wird. Dies führt zu einem stabileren Luftschichtanker. Selbiges gilt im Falle einer Nachrüstung des Mauerwerks mit einer Isolierung und einer Außenschale. Auch hier wird bei vorhergehendem Hochziehen der Innenschale die Verletzungsgefahr ohne die Notwendigkeit des Wegbiegens des Innenschalenabschnitts vermindert.Ensures the Zweistückigkeit or bipartite of the air layer anchor according to the invention that when pulling up the inner shell of a clam shell masonry only the inner shell portion can be introduced into a joint of the inner shell and thus hardly, but at least significantly less than a one-piece air layer anchor projecting from the inner shell. This leads to a significant reduction in the risk of injury due to protruding parts of the air layer anchor. In addition, the inner shell portion does not have to be bent in order to reduce the risk of injury, so that no additional weak point, possible breakage or predetermined breaking point is generated. This leads to a more stable Cavity wall ties. The same applies in the case of retrofitting the masonry with an insulation and an outer shell. Here, too, the risk of injury without the necessity of bending away of the inner shell portion is reduced in previous pulling up the inner shell.

Zudem kann aufgrund der Zweistückigkeit des Luftschichtankers, der Luftschichtanker flexibler an die Bedürfnisse angepasst werden. Beispielsweise ist es denkbar, den Innenschalenabschnitt zur Einbringung in eine Dünnbettfuge als flaches Stanzteil auszubilden und den Außenschalenabschnitt zur Einbringung in eine Dickbettfuge als stabileres Drahtteil auszubilden. Das stabilere Drahtteil kann zudem, im Falle eines kreisförmigen Querschnitts, Lasten in alle Richtungen gleich gut aufnehmen. Bei einem flachen blechförmigen Außenschalenabschnitt wäre eine Lastaufnahme nur zuverlässig in eine Richtung, wie in vertikaler Richtung, und nicht in alle Richtungen gegeben. Besonders bei nur kurzen Schalenabständen zwischen Innenschale und Außenschale kann der aus dem Stand der Technik bekannte einstückige, flache, aus Blech geformte Luftschichtanker die horizontalen Kräfte nicht hinreichend aufnehmen und lockert sich dadurch in der Mörtelfuge. Ein beispielsweise drahtförmig ausgebildeter Außenschalenabschnitt hingegen gewährleistet eine Lastaufnahme, wie die Aufnahme einer Zug- und/oder Druckbelastung, in alle Richtungen.In addition, due to the two-piece nature of the air layer anchor, the air layer anchor can be adapted more flexibly to the needs. For example, it is conceivable to form the inner shell section for insertion into a thin-bed joint as a flat stamped part and to form the outer shell section for introduction into a thick bed joint as a more stable wire part. In addition, the more stable wire part, in the case of a circular cross-section, can absorb loads in all directions equally well. With a flat sheet-like outer shell section, a load-bearing would only be reliable in one direction, as in the vertical direction, and not in all directions. Especially with only short shell distances between inner shell and outer shell known from the prior art one-piece, flat, formed of sheet metal air layer anchor can not absorb the horizontal forces sufficient and thus loosens in the mortar joint. An example of a wire-shaped outer shell section, however, ensures a load bearing, such as the inclusion of a tensile and / or compressive load, in all directions.

Auch ist es denkbar, dass eine Vielzahl verschieden ausgebildeter Innenschalenabschnitte und Außenschalenabschnitte, beispielsweise eine Vielzahl verschiedener flacher und drahtförmiger Innenschalen- und Außenschalenabschnitte, bereitgestellt wird, die flexibel miteinander kombinierbar sein können. Beispielsweise kann auch der Außenschalenabschnitt zur Einbringung in eine Dünnbettfuge aus einem flachen Blech hergestellt sein und der Innenschalenabschnitt kann zur Einbringung in eine Dickbettfuge als ein Drahtteil mit kreisförmigen Querschnitt ausgebildet sein. In diesem Fall wären vorzugsweise die Ausnehmung und die Führung in dem Außenschalenabschnitt und die Z-förmige Biegung in dem Innenschalenabschnitt ausgebildet, um den Außenschalenabschnitt und den Innenschalenabschnitt miteinander zu verbinden.It is also conceivable that a plurality of differently shaped inner shell sections and outer shell sections, for example, a plurality of different flat and wire-shaped inner shell and outer shell sections, is provided, which can be flexibly combined with each other. For example, the outer shell portion may also be made of a flat sheet for introduction into a thin-bed joint, and the inner shell portion may be formed as a wire member having a circular cross-section for insertion into a thick-bed joint. In this case, preferably, the recess and the guide in the outer shell portion and the Z-shaped bend in the inner shell portion would be formed to connect the outer shell portion and the inner shell portion with each other.

Die Erfindung soll nachfolgend anhand einer bevorzugten Ausführungsform beschrieben werden. Es zeigen:

Fig. 1
einen zweistückigen Luftschichtanker gemäß einer Ausführungsform der vorliegenden Erfindung in einem zweischaligen Mauerwerk mit einer In- nenschale und einer Außenschale;
Fig. 2a
eine Draufsicht auf den Innenschalenabschnitt des Luftschichtankers aus Fig. 1;
Fig. 2b
einen Schnitt entlang der Längsachse des Innenschalenabschnitts aus Fig. 2a;
Fig. 2c
einen Schnitt quer zur Längsachse des Innenschalenabschnitts aus Fig. 2a; und
Fig. 3
eine Seitenansicht des Außenschalenabschnitts des Luftschichtankers aus Figur 1.
The invention will be described below with reference to a preferred embodiment. Show it:
Fig. 1
a two-piece air layer anchor according to an embodiment of the present invention in a two-shell masonry with an inner shell and an outer shell;
Fig. 2a
a plan view of the inner shell portion of the air layer anchor Fig. 1 ;
Fig. 2b
a section along the longitudinal axis of the inner shell portion Fig. 2a ;
Fig. 2c
a section transverse to the longitudinal axis of the inner shell portion Fig. 2a ; and
Fig. 3
a side view of the outer shell portion of the air layer anchor FIG. 1 ,

Figur 1 zeigt einen in ein zweischaliges Mauerwerk mit einer Innenschale 100 und einer Außenschale 200 eingefügten zweistückigen Luftschichtanker 1 gemäß einer Ausführungsform der vorliegenden Erfindung. Wie in Fig. 1 zu sehen, ist ein in die Innenschale 100 des Mauerwerks eingefügter Innenschalenabschnitt 10 des Luftschichtankers 1 als zumindest abschnittsweise flaches Blechteil ausgebildet, das in eine Dünnbettfuge 110 der Innenschale 100 eingefügt ist. Ein in die Außenschale 200 des Mauerwerks eingefügter Außenschalenabschnitt 20 des Luftschichtankers 1 ist als Drahtteil mit einem kreisförmigen Querschnitt ausgebildet, das auf einer Endseite in eine Dickbettfuge 210 der Außenschale 200 eingefügt ist und auf seiner anderen Endseite mit dem aus einem Blechteil geformten Innenschalenabschnitt 10 verbunden ist. Auf den als Drahtteil geformten Außenschalenabschnitt 20 ist eine Dämmplatte 300 aufgebracht, die an der Innenschale 100 des Mauerwerks anliegt. Der in Figur 1 gezeigte zweistückige Luftschichtanker 1 verbindet die Innenschale 100 eines Mauerwerks über die Dämmplatte 300 und einen Luftspalt bzw. eine Luftschicht 400 mit der Außenschale 200 des Mauerwerks. FIG. 1 shows a two-piece air layer anchor 1 inserted into a clam shell masonry with an inner shell 100 and an outer shell 200 according to an embodiment of the present invention. As in Fig. 1 can be seen, an inserted into the inner shell 100 of the masonry inner shell portion 10 of the air layer anchor 1 as at least partially flat sheet metal part is formed, which is inserted into a Dünnbettfuge 110 of the inner shell 100. An inserted into the outer shell 200 of the masonry outer shell portion 20 of the air layer anchor 1 is formed as a wire member having a circular cross-section which is inserted on one end side in a thick bed joint 210 of the outer shell 200 and is connected on its other end side with the formed of a sheet metal part inner shell portion 10 , On the formed as a wire part outer shell portion 20, an insulating plate 300 is applied, which rests against the inner shell 100 of the masonry. The in FIG. 1 shown two-piece air-layer anchor 1 connects the inner shell 100 of a masonry on the insulation board 300 and an air gap or an air layer 400 with the outer shell 200 of the masonry.

An dem als Drahtteil geformten Außenschalenabschnitt 20 sind zudem eine Klemmscheibe 23 und eine Tropfscheibe 24 angeordnet. Über die Tropfscheibe 24 kann in der Luftschicht 400 gebildetes Kondenswasser abtropfen, so dass eine Beeinflussung der Dämmplatte 300 durch Kondenswasser verringert wird. Über die Klemmscheibe 23 wird die Dämmplatte 300 an die Innenschale 100 geklemmt bzw. gepresst, um eine bessere Isolierung zu erreichen.In addition, a clamping disk 23 and a drip disk 24 are arranged on the outer shell section 20 formed as a wire part. Via the drip disk 24, condensation water formed in the air layer 400 can drip off, so that an influence on the insulation board 300 by condensed water is reduced. About the clamping plate 23, the insulation board 300 is clamped or pressed against the inner shell 100 in order to achieve better insulation.

Wie in Figur 1 zu sehen, ist das zumindest abschnittsweise flach ausgebildete Blechteil in eine Dünnbettfuge 110 der Innenschale 100 eingefügt und ist das Drahtteil in eine Dickbettfuge 210 der Außenschale 200 eingefügt. Durch die Form und Dicke des Drahtteils wird eine höhere und gleichmäßigere Lastaufnahme als bei einem Blechteil erreicht.As in FIG. 1 can be seen, the at least partially formed flat sheet metal part is inserted into a thin-bed joint 110 of the inner shell 100 and is the wire part in a thick-bed joint 210 of the outer shell 200 is inserted. Due to the shape and thickness of the wire part, a higher and more uniform load bearing is achieved than with a sheet metal part.

Über einen an dem Innenschalenabschnitt 10 angeordneten Innenschalen-Verbindungsabschnitt 11 und einen an dem Außenschalenabschnitt 20 angeordneten Außenschalen-Verbindungsabschnitt 21 werden der Innenschalenabschnitt 10 und der Außenschalenabschnitt 20 lösbar zu dem zweistückigen Luftschichtanker 1 verbunden. Die einzelnen Elemente des Innenschalenabschnitts 10, des Innenschalen-Verbindungsabschnitts 11, des Außenschalenabschnitts 20 und des Außenschalenabschnitt-Verbindungsabschnitts 21 sollen anhand der Figuren 2a, 2b, 2c und 3 eingehender beschrieben werden.Via an inner shell connecting portion 11 arranged on the inner shell portion 10 and an outer shell connecting portion 21 arranged on the outer shell portion 20, the inner shell portion 10 and the outer shell portion 20 are detachably connected to the two-piece air layer anchor 1. The individual elements of the inner shell portion 10, the inner shell connecting portion 11, the outer shell portion 20 and the outer shell portion connecting portion 21 will be described with reference to FIGS FIGS. 2a, 2b, 2c and 3 be described in more detail.

In den Figuren 2a bis 2c wird der als Blechteil ausgebildete Innenschalenabschnitt 10 des in Figur 1 gezeigten zweistückigen Luftschichtankers 1 einzeln, als separates Stück dargestellt. Der Innenschalenabschnitt 10 weist in seinem Innenschalenabschnitt-Verbindungsabschnitt 11 als Verbindungselemente zwei, als Führung des Außenschalenabschnitts 20 dienende, nach oben gebogene Vorsprünge 11a mit einer Länge von 6,5 mm sowie eine mit einer Randlochverstärkung versehene Bohrung 11b mit einem Durchmesser von 4,2 mm auf. Wie aus den Figuren 2b und 2c ersichtlich, betragen die Länge des Blechteils 95 mm und die Breite des Blechteils 16 mm.In the FIGS. 2a to 2c is formed as a sheet metal part inner shell portion 10 of in FIG. 1 shown two-piece air layer anchor 1 individually, shown as a separate piece. The inner shell section 10 has, in its inner shell section connecting section 11 as connecting elements, two upwardly bent projections 11a having a length of 6.5 mm serving as a guide of the outer shell section 20 and a bore 11b having a diameter of 4.2 mm provided with an edge hole reinforcement on. Like from the FIGS. 2b and 2c can be seen, the length of the sheet metal part 95 mm and the width of the sheet metal part 16 mm.

Wie in Figur 2a gezeigt, sind entlang der Längsachse des Blechteils kreisförmige Ausstanzungen 13 mit einem Durchmesser von 8 mm ausgebildet. Der die kreisförmigen Ausstanzungen 13 aufweisende Abschnitt des Blechteils ist, wie aus Figur 1 ersichtlich, flach ausgebildet und dient dazu in die Dünnbettfuge 110 der Innenschale 100 zur Verankerung des Blechteils mit der Innenschale 100 eingefügt zu werden. Über die kreisförmigen Ausstanzungen 13 wird erreicht, dass sich der Mörtel oberhalb und unterhalb des Blechteils durch das Blechteil hindurch miteinander verbindet, was eine stabilere und festere Verankerung des Blechteils in der Innenschale 100 gewährleistet.As in FIG. 2a are shown, along the longitudinal axis of the sheet metal part circular punched holes 13 are formed with a diameter of 8 mm. The portion of the sheet metal part having the circular cutouts 13 is as shown FIG. 1 seen flat and serves to be inserted into the Dünnbettfuge 110 of the inner shell 100 for anchoring the sheet metal part with the inner shell 100. About the circular punch-outs 13 ensures that the mortar connects above and below the sheet metal part through the sheet metal part together, which ensures a more stable and firmer anchoring of the sheet metal part in the inner shell 100.

Zwischen dem die Ausstanzungen 13 aufweisenden Abschnitt des Innenschalenabschnitts 10 und dem Innenschalen-Verbindungsabschnitt 11 ist, benachbart zu der Bohrung 11b, eine senkrecht zu dem Blechteil stehende Gegendrucklasche 12 dadurch gebildet, dass der torförmige Umfang der Gegendrucklasche 12 aus dem Blechteil ausgestanzt und nach unten gebogen ist. Wie aus Figur 2b zu erkennen, sind die Vorsprünge 11a und die Gegendrucklasche 12 parallel zueinander, senkrecht zu dem Innenschalenabschnitt 10, angeordnet, aber in verschiedene Richtungen gebogen.Between the punched portions 13 having portion of the inner shell portion 10 and the inner shell-connecting portion 11, adjacent to the bore 11b, a perpendicular to the sheet metal part counter-pressure plate 12 formed by the fact that the gate-shaped periphery of the counter-pressure plate 12 punched out of the sheet metal part and bent down is. How out FIG. 2b can be seen, the projections 11a and the back pressure plate 12 parallel to each other, vertical to the inner shell portion 10, but bent in different directions.

Die Gegendrucklasche 12 ist aus dem Blechteil ausgestanzt, senkrecht zu dem Blechteil nach unten gebogen und weist eine Länge von 10,3 mm auf. Wie in Figur 1 zu sehen, dient die Gegendrucklasche 12 dazu, den durch das Drahtteil ausgeübten punktuellen Druck aufzunehmen, als flächigen Druck auf die Innenschale 100 abzugeben und somit eine Beeinträchtigung der Innenschale 100 des Mauerwerks durch punktuelle Belastung zu verringern. Wie in Figur 1 zu erkennen, stehen nur der Innenschalen-Verbindungsabschnitt 11 und die Gegendrucklasche 12 aus der Innenschale 100 vor, während der restliche Teil des Innenschalenabschnitts 10 sich in der Dünnbettfuge 110 der Innenschale 100 befindet.The counter pressure flap 12 is punched out of the sheet metal part, bent downwards perpendicular to the sheet metal part and has a length of 10.3 mm. As in FIG. 1 can be seen, the counter-pressure plate 12 serves to absorb the pressure exerted by the wire portion point pressure to deliver as a surface pressure on the inner shell 100 and thus to reduce deterioration of the inner shell 100 of the masonry by punctual load. As in FIG. 1 to recognize only the inner shell connecting portion 11 and the back pressure plate 12 from the inner shell 100 before, while the remaining part of the inner shell portion 10 is located in the Dünnbettfuge 110 of the inner shell 100.

Die am Ende des Blechteils senkrecht zu dem Blechteil hochgebogenen zwei Vorsprünge 11a weisen eine Länge von 6,5 mm auf. Wie in Figur 2c zu sehen, beträgt der Abstand zwischen den zwei Vorsprüngen 11a 4,2 mm, so dass das Drahtteil, das nach Figur 3 einen Durchmesser von 4 mm aufweist, durch die Vorsprünge 11a hindurch geführt werden kann und von diesen aufgenommen und stabilisiert werden kann. Zur vollständigen Verbindung des Drahtteils mit dem Blechteil wird das Drahtteil durch die in dem Blechteil zum Beispiel durch Ausstanzen gebildete Bohrung 11b geführt, die einen, ebenfalls auf den Durchmesser des Drahtteils von 4 mm abgestimmten Durchmesser von 4,2 mm aufweist, und so in dem Blechteil eingehängt oder verankert.The bent up at the end of the sheet metal part perpendicular to the sheet metal part two projections 11a have a length of 6.5 mm. As in Figure 2c to see, the distance between the two protrusions 11a is 4.2 mm, so that the wire part after FIG. 3 has a diameter of 4 mm, can be passed through the projections 11 a and can be absorbed and stabilized by these. For complete connection of the wire part with the sheet metal part, the wire part is guided through the formed in the sheet metal part, for example by punching bore 11b, which has a, also to the diameter of the wire part of 4 mm tuned diameter of 4.2 mm, and so in the Sheet metal part hung or anchored.

Figur 3 zeigt den als Blechteil ausgebildeten Außenschalenabschnitt 20 des Luftschichtankers 1 aus Figur 1 als separates Stück. Wie aus Figur 3 zu erkennen, betragen der Durchmesser des kreisförmigen Querschnitts des Drahtteils 4 mm und die Gesamtlänge des Drahtteils 125 mm. Ein wellenförmiger, zwischen 48 und 52 mm langer Abschnitt 22 ist an einem ersten Ende des Drahtteils ausgebildet, der, wie aus Fig. 1 ersichtlich, in die Dickbettfuge 210 der Außenschale 200 eingefügt wird. Durch die Wellenform wird eine festere und stabilere Verankerung des Drahtteils in der Dickbettfuge 210 erreicht. Das zweite Ende des Außenschalenabschnitts 20 weist entlang einem Abschnitt von 10 mm entlang der Längsachse des Drahtteils, einen gebogenen Abschnitt 21 als Verbindungsabschnitt auf, der senkrecht zur Längsachse des Drahtteils 12 mm einnimmt. Der gebogene Abschnitt 21 ist in Form des Buchstabens "Z" gebogen und kann auf Grund seiner Form und seiner Abmessungen durch die Vorsprünge 11a des Blechteils und die Bohrung 11b des Blechteils geführt werden und durch Einhängen mit dem Blechteil verbunden werden. Durch die Verbindung des Drahtteils mit dem Blechteil über den Z-förmigen Abschnitt 21, die zwei Stege 11a und die Bohrung 11b, wird eine stabile, lösbare Verbindung und damit ein stabiler zweistückiger Luftschichtankers geschaffen. FIG. 3 shows the formed as a sheet metal part outer shell portion 20 of the air layer anchor 1 FIG. 1 as a separate piece. How out FIG. 3 to recognize the diameter of the circular cross-section of the wire part 4 mm and the total length of the wire part 125 mm. A wavy, between 48 and 52 mm long section 22 is formed at a first end of the wire part, which, as shown Fig. 1 can be seen, in the thick bed joint 210 of the outer shell 200 is inserted. By the waveform, a firmer and more stable anchoring of the wire part in the thick-bed joint 210 is achieved. The second end of the outer shell portion 20 has along a portion of 10 mm along the longitudinal axis of the wire part, a bent portion 21 as a connecting portion which assumes 12 mm perpendicular to the longitudinal axis of the wire portion. The bent portion 21 is bent in the shape of the letter "Z" and, due to its shape and dimensions, can be guided by the projections 11a of the sheet metal part and the bore 11b of the sheet metal part and connected to the sheet metal part by hanging. Through the connection of the wire part with the sheet metal part over the Z-shaped section 21, the two webs 11a and the bore 11b, a stable, detachable connection and thus a stable two-piece air layer anchor is provided.

Claims (9)

  1. A two-piece cavity wall tie (1) for a cavity wall, comprising an inner shell (100) and an outer shell (200), wherein the cavity wall tie (1) comprises as a first component an inner shell portion (10) for insertion in the inner shell (100) and as a second, separate component an outer shell portion (20) for insertion in the outer shell (200), said inner shell portion (10) and said outer shell portion (20) being adapted to be connected to one another via an inner shell connecting section (11) formed on the inner shell portion (10) and an outer shell connecting section (21) formed on the outer shell portion (20), wherein the inner shell connecting section (11) is provided with at least two flanges or projections extending at right angles to the inner shell portion (10) and used as a guide means (11a) for guiding the outer shell portion (20), characterized in that the outer shell portion (20) is configured as a wire element, in particular a wire element having a circular cross-section with a diameter of 2 to 6 mm, preferably 4 mm.
  2. A two-piece cavity wall tie (1) according to the preceding claim, wherein the inner shell portion (10) is configured as a, preferably flat, blanked part.
  3. A two-piece cavity wall tie (1) according to one of the preceding claims, wherein the inner shell connecting section (11) is provided with a, preferably circular, opening (11b) for receiving therein the outer shell connecting section (21).
  4. A two-piece cavity wall tie (1) according to the preceding claim, wherein the edge of the opening (11b) is reinforced.
  5. A two-piece cavity wall tie (1) according to one of the preceding claims, wherein the inner shell portion (10) includes a punched-out portion for insertion in the inner shell (100), in which punched-out openings (13), in particular circular punched-out openings having a diameter of from 6 to 10 mm, preferably 8 mm, are formed along the longitudinal axis of the inner shell portion (10).
  6. A two-piece cavity wall tie (1) according to one of the preceding claims, wherein the inner shell portion (10) has a width of from 14 to 18 mm, in particular 16 mm.
  7. A two-piece cavity wall tie (1) according to one of the preceding claims, wherein the inner shell portion (10) is provided with a counterpressure lug (12) between the inner shell connecting section (11) and the punched-out portion (13).
  8. A two-piece cavity wall tie (1) according to one of the preceding claims, wherein the outer shell connecting section (21) includes a bend, in particular a Z-shaped bend, for connection with the inner shell portion (10).
  9. A two-piece cavity wall tie (1) according to one of the preceding claims, wherein the outer shell portion (20) includes an undulated end section (22) for insertion in the outer shell (200).
EP09008454A 2009-06-29 2009-06-29 Two-piece air layer anchor Active EP2273020B1 (en)

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GB2485793B (en) * 2010-11-24 2014-10-08 Wincro Metal Ind Ltd Wall tie
BE1025693B1 (en) * 2017-11-09 2019-06-11 Filippo Tudisco Universal anchoring system for masonry

Citations (1)

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Publication number Priority date Publication date Assignee Title
WO1992021831A1 (en) * 1991-05-27 1992-12-10 A. & B. Tool And Die Manufacturers Pty. Ltd. Improvements in masonry ties

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Publication number Priority date Publication date Assignee Title
AU626687B2 (en) 1989-06-08 1992-08-06 Thomas J Brotherston A brick tie
GB2263291B (en) * 1991-11-14 1995-10-11 Gabriel Lennon A wall tie
GB9212839D0 (en) 1992-06-17 1992-07-29 James Stephen A Variable interengageable wall tie
DE9320118U1 (en) * 1993-12-29 1994-02-24 Bever Gesellschaft für Befestigungsteile - Verbindungselemente mbH, 57399 Kirchhundem Wall and air layer tankers
DE19647344A1 (en) 1996-11-15 1998-05-20 Modersohn Gmbh & Co Kg Wilh Holding anchor for connection between outer and inner layers of double layer wall in building construction

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992021831A1 (en) * 1991-05-27 1992-12-10 A. & B. Tool And Die Manufacturers Pty. Ltd. Improvements in masonry ties

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