EP4170103A1 - Élément de fixation d'espacement, ensemble comprenant deux éléments de fixation d'espacement et élément de fixation d'espacement - Google Patents

Élément de fixation d'espacement, ensemble comprenant deux éléments de fixation d'espacement et élément de fixation d'espacement Download PDF

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Publication number
EP4170103A1
EP4170103A1 EP22199572.3A EP22199572A EP4170103A1 EP 4170103 A1 EP4170103 A1 EP 4170103A1 EP 22199572 A EP22199572 A EP 22199572A EP 4170103 A1 EP4170103 A1 EP 4170103A1
Authority
EP
European Patent Office
Prior art keywords
spacer
connector
extension
anchor
rod
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.)
Pending
Application number
EP22199572.3A
Other languages
German (de)
English (en)
Inventor
Aaron Daly
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
Application filed by Fischerwerke GmbH and Co KG filed Critical Fischerwerke GmbH and Co KG
Publication of EP4170103A1 publication Critical patent/EP4170103A1/fr
Pending 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
    • E04B1/7637—Anchoring of separate elements through the lining to the wall

Definitions

  • the invention relates to a spacer fastener having the features of the preamble of claim 1, an arrangement with two such spacer fasteners having the features of the preamble of claim 11, and a spacer fastener having the features of the preamble of claim 13.
  • the invention is intended for fastening an object, referred to here as an add-on part, on an outside of an insulating material which is attached to the anchor base and faces away from an anchor base. If the insulating material is plastered, the attachment is attached to or on the plaster.
  • the insulation material is, for example, an insulation board that is attached, for example, to the outside of a building wall, with the building wall forming the anchor base.
  • anchoring in the anchorage is necessary in order to transfer a load acting on the attachment.
  • the insulating material does not have sufficient strength for this.
  • the patent application EP 2 821 559 A1 discloses a standoff fastener having a first threaded rod as an anchor rod, a second threaded rod as an extension of the anchor rod, and a cylindrical plastic sleeve as a thermal break connector.
  • the connector has an internal thread into which the anchor rod is screwed from one side and the extension from an opposite side.
  • the anchor rod is anchored in, for example, a building wall as the anchor base in such a way that the anchor rod protrudes from the anchor base.
  • the connector is located in an insulating material that is attached to the anchor base.
  • the extension is also located in the insulating material and protrudes from the insulating material for attaching an add-on part.
  • the known spacer is surrounded by a metal sleeve, with an annular gap enclosing the connector in the metal sleeve being filled with insulating foam.
  • the object of the invention is to improve load transfer of such a spacer fastener from the attachment to the anchor base.
  • the standoff fastener of the present invention includes an anchor rod, an extension, and a thermal break connector connecting the extension to the anchor rod such that the extension extends the anchor rod.
  • the anchor rod has a first threaded rod and/or the extension has a second threaded rod, which the connector connects in particular coaxially.
  • the connector consists, for example, of a thermally insulating plastic.
  • the extension has a connecting section for connecting the extension to the connector and an abutment surface facing away from the anchor rod for abutting the attachment at a distance from the connector.
  • the connecting section can extend into the connector and/or protrude out of the connector on a side opposite the anchor rod.
  • the contact surface is in particular a radial surface, for example in the form of a circumferential annular step.
  • a flexural rigidity of the extension or also a flexural rigidity of the extension including the connector is less than a flexural rigidity of the extension from an end of the connection section remote from the anchor rod to the contact surface for the attachment.
  • the lower flexural rigidity in the area of the connecting section enables an alignment, in particular an angular alignment to a bending line of the anchor rod when the spacer fastener is subjected to transverse loading by a locally limited and thus defined deformation of the connector and/or the connecting section.
  • a distance between the contact surface and the end of the connecting section of the extension remote from the anchor rod is approximately three times as long as the connecting section.
  • “About” means a tolerance of maximum ⁇ 15%, in particular maximum ⁇ 10% and in particular ⁇ 5%.
  • the flexural rigidity of the connection section of the extension is preferably also smaller than a flexural rigidity of the anchor rod.
  • the flexural rigidity of the anchor rod is in particular smaller than the flexural rigidity of the extension from the end of the connecting section remote from the anchor rod to the contact surface for the attachment.
  • one embodiment of the invention provides a pull rod, for example a threaded rod, and a pressure sleeve that encloses the pull rod, in particular coaxially, which are axially braced with one another in such a way that the pull rod is subjected to tension and the pressure sleeve to pressure.
  • the pressure sleeve determines a section of the extension with high flexural rigidity, which extends in particular from an end facing the anchor rod to an end of the pressure sleeve facing away from the anchor rod.
  • the end of the pressure sleeve facing away from the anchor rod in particular forms or has the contact surface for the attachment.
  • the pull rod preferably protrudes from the pressure sleeve at both ends.
  • the ferrule preferably terminates at a distance from the connector.
  • the pressure sleeve is preferably axially supported directly or indirectly on the tie rod and not on the connector, the latter so that the connector can align itself according to the bending line of the anchor rod in the case of transverse loading. With the pressure sleeve and the pull rod, the extension can be made very rigid and, compared to the connecting section, almost rigid.
  • an embodiment of the invention provides a pull rod with an external thread.
  • the tie rod is a threaded rod on which the pressure sleeve is supported axially, in particular directly or indirectly, via a stop element.
  • the stop element is a nut screwed onto the pull rod. The stop element is axially spaced from the connector so that no load is transferred from the pressure sleeve to the connector, which would prevent the connector from being aligned in accordance with the bending line of the anchor rod in the event of transverse loading.
  • the stop element is preferably non-rotatable or at least to a limited extent non-rotatable with the pressure sleeve, such that the stop element can be rotated by turning the pressure sleeve on the external thread of the pull rod. Friction between the pressure sleeve and the stop element is greater than friction of the stop element on the external thread of the pull rod, or there is a form fit or another non-rotatable connection between the pressure sleeve and the stop element, in particular a nut. This allows the length of the spacer fastener to be adjusted by turning an end of the compression sleeve remote from the tie rod and accessible from the outside. "Length adjustment" means an axial adjustment of the contact surface for the attachment.
  • a preferred embodiment of the invention provides a resilient spacer between the ferrule and the connector.
  • the spacer keeps the pressure sleeve or the stop element at an axial distance from the connector.
  • the spacer prevents the connector or the stop element from coming into direct axial contact with the pressure sleeve and/or the stop element, so that the connector can pivot relative to the pressure sleeve or deform under load due to a bend in the extension in the connecting section.
  • the pull rod of the connector which can be a threaded rod like the anchor rod, preferably has a smaller diameter than the anchor rod.
  • the high flexural rigidity is achieved by the pressure sleeve.
  • the connector and the extension and/or the connector and the anchor rod have a screw connection with one another.
  • the extension and the anchor rod each have a threaded rod which is screwed into an internal thread of the extension.
  • An arrangement according to the invention with the features of claim 11 has two spacer fasteners of the type explained above and an attachment that rigidly connects the two spacer fasteners at their extensions.
  • the attachment is braced against the contact surfaces of the extensions of the two spacer fasteners.
  • the attachment holds the rigid sections of the extensions from the ends of the connecting sections remote from the anchor rods to the contact surfaces resting on the attachment in a rigid manner in their alignment with one another, thereby achieving an overall rigid and stable arrangement for fastening the attachment at a distance to the anchor base.
  • the deformation of the arrangement according to the invention in an axial plane due to the two spacer fasteners is less than the deformation of two individual spacer fasteners which are not rigidly connected to one another.
  • the attachment keeps the two standoff fasteners spaced apart and parallel to each other.
  • the subject of claim 13 is a distance attachment of the attachment to the anchor base on which an insulating material is attached, with the two distance fasteners, the anchor rods of which are anchored in the anchor base and protrude from the anchor base into the insulation material.
  • the attachment connects the two spacer fasteners rigidly at their extensions.
  • the connectors are located in the insulating material and the attachment is on the outside of the insulating material facing away from the anchor base.
  • the load transfer from the attachment to the anchor base is essentially via the two rigidly connected spacer fasteners and not or only slightly into the insulation material.
  • the connectors are preferably located in a middle third of the insulating material between an inner side of the insulating material facing the anchor base or lying against the anchor base and the outer side of the insulating material facing away from the anchor base.
  • the arrangement of the connectors of the two spacer fasteners in this area which at the same time also defines a position of the connection section of the extension with the low flexural rigidity, is favorable in terms of bending and load transfer during transverse loading of the two spacer fasteners on the attachment.
  • the spacer fastener 1 has an anchor rod 2, an extension 3 and a connector 4, which connects the anchor rod 2 and the extension 3 in such a way that the extension 4 extends the anchor rod 2, i.e. is arranged in an extension of the anchor rod 2, and at the same time thermally separates the anchor rod 2 and the extension 3 from one another.
  • the connector 4 connects the anchor rod 2 and the extension 3 to one another coaxially.
  • the anchor rod 2 is a first threaded rod 5, which consists of steel in the exemplary embodiment.
  • the connector 4 consists of a thermally insulating plastic and has two coaxial blind holes 6, 7 with internal threads 8, 9 with - in the exemplary embodiment - on different diameters. On the outside, the connector 4 is similar to a bevel cutter with milling cutters 10 on a frustoconical envelope surface.
  • the extension 3 has a second threaded rod 11 as a tie rod 12 and a pressure sleeve 13 which encloses the tie rod 12 coaxially and with an annular space 14, the space 14 not being absolutely necessary.
  • the second threaded rod 11 and the pressure sleeve 13 are also made of steel in the exemplary embodiment.
  • the second threaded rod 11 forming the tie rod 12 has—in the exemplary embodiment—a smaller diameter than the first threaded rod 5 forming the anchor rod 2 .
  • the second internal thread 9 also forms of the connector 4 and the thread screwed into the second internal thread 9 of the second threaded rod 11 forming the tie rod 12 of the extension 3 a screw connection of the extension 3 with the connector 4.
  • the pressure sleeve 13 has a nut holder 15 which holds a first nut 16 coaxially on the front end of the pressure sleeve 13 .
  • the nut holder 15 is a short sleeve with a stepped diameter 17 which has a cylindrical collar 18 which is inserted in the front end of the pressure sleeve 13 and a nut receptacle 19 which is adapted in shape to the first nut 16 .
  • the first nut 16 is a hexagonal nut and the nut receptacle 19 is correspondingly hexagonal.
  • the collar 18 of the nut holder 15 has a press fit in the front end of the pressure sleeve 13 in such a way that the nut holder 15 and, via the nut holder 15, the first nut 16 are rotationally fixed to the pressure sleeve 13. Via the diameter step 17, the nut holder 15 supports the pressure sleeve 13 axially on the first nut 16, which forms a stop element.
  • the first nut 16 is screwed onto the second threaded rod 11 forming the tie rod 12 in such a way that the tie rod 12 or the second threaded rod 11 protrudes a little out of the pressure sleeve 13 axially beyond the first nut 16 .
  • a double-walled centering sleeve 20 is placed on a front end of the pressure sleeve 13 remote from the nut holder 15 and centers the pressure sleeve 13 on the second threaded rod 11 forming the tie rod 12 .
  • the tie rod 12 projects axially out of the pressure sleeve 13 at this front end of the pressure sleeve 13 as well.
  • Centering sleeve 20 is non-rotatable with pressure sleeve 13 due to friction.
  • Centering sleeve 20 has an external hexagon 31 for turning.
  • a second nut 21 which is screwed from an end remote from the first nut 16 onto the second threaded rod 11 forming the tie rod 12 and which—in the exemplary embodiment—is clamped against the centering sleeve 20 via an attachment 22, the pressure sleeve 13 and the tie rod 12 braced axially with one another or against one another.
  • the pressure sleeve 13 is subjected to a compressive stress and the pull rod 12 to a tensile stress, whereby the extension 3 in Area of the pressure sleeve 13 has a high flexural rigidity.
  • a front edge of the centering sleeve 20 facing away from the first nut 16 forms a contact surface 23 for the attachment 22, which in the exemplary embodiment is a holding bracket for an awning, not shown.
  • a section of the tie rod 12 protruding from the pressure sleeve 13 beyond the first nut 16 on the side of the connector 4 forms a connecting section 24 of the extension 3 and is screwed a little way into the second internal thread 9 of the connector 4 in such a way that an axial distance between of the first nut 16 and the connector 4.
  • an annular or sleeve-shaped elastic spacer 25 which consists of an elastomer or another elastic plastic in the exemplary embodiment, is arranged between the connector 4 and the first nut 16 on the pull rod 12 .
  • the pressure sleeve 13 is supported axially on the pull rod 12 via the first nut 16 . Because of the axial distance from the connector 3, the pressure sleeve 13 is not supported axially on the connector 4.
  • the flexural rigidity of the extension 3 of the spacer fastener 1 according to the invention is less than in the area of the pressure sleeve 13, i.e. from the first nut 16 at the end of the connecting section 24 to the contact surface 23 for the attachment 22.
  • the pressure sleeve 13 is axially from the contact surface 23 for the attachment 22 to the first nut 16 is several times longer than the connecting section 24. In the exemplary embodiment, the pressure sleeve 13 from the contact surface 23 for the attachment 22 to the first nut 16 is about three times as long as the connecting section 24.
  • the attachment 22 connects two spacer fasteners 1 according to the invention at their extensions 3 to one another in a rigid manner and keeps the two spacer fasteners 1 parallel to one another and at a distance from one another.
  • the attachment 22 has two through holes at a distance from one another, with which it is placed on the ends of the tie rods 12 protruding from the pressure sleeve 13, until the attachment 22 on the ends of the pressure sleeves 13 remote from the connectors 4 rests on the contact surfaces 23 of the centering sleeves 20 applied.
  • the attachment 22 With the second nuts 21, the attachment 22 is clamped against the contact surfaces 23 of the extensions 3 of the spacer fasteners 1, whereby the pressure sleeves 13 and the tie rods 12 are axially braced as described above and the flexural rigidity of the extensions 3 in the area of the pressure sleeves 13 is greatly increased.
  • the attachment 22 with the two spacer fasteners 1 forms an arrangement according to the invention for the spaced attachment of the add-on part 22 to an anchor base 26.
  • the anchor base 26 forms in the in figure 3 illustrated embodiment of the invention is a building wall, in which the anchor rods 2 of the two spacer fasteners 1 are anchored with a hardening mass, for example a synthetic resin mortar, or with an expansion dowel, not shown, such that the anchor rods 2 protrude from the anchor base 26.
  • An insulating material 27 in the exemplary embodiment a foamed insulating material panel, is attached to an outer side of the building wall forming the anchor base 26 , and a plaster layer 29 is attached to its outer side 28 facing away from the anchor base 26 .
  • the anchor rods 2 end in the insulating material 27.
  • the connectors 4 are screwed onto the anchor rods 2 and the extensions 3 are screwed into them.
  • the connectors 4 are located in a middle third of the insulating material 27 between the anchor base 26 and the outside 28 of the insulating material 27.
  • the pressure sleeves 13 and thus the contact surfaces 23 for the attachment 22 can be aligned axially by turning the first nuts 16 on the tie rods 12 via the pressure sleeves 13 .
  • the pressure sleeves 13 are aligned in such a way that the contact surfaces 23 are flush with the plaster layer 29 . Even if the first nuts 16 with the pressure sleeves 13 are turned back and forth several times on the tie rods 12, the spacers 25 between the connectors 4 and the first nuts 16 of the pressure sleeves 13 prevent the first nuts 16 from directly resting on the connectors 4.
  • the tie rods 12 When turning the first nuts 16 with the pressure sleeves 13, the tie rods 12 are held in a rotationally fixed manner, for which purpose they have tool seats 30 for a rotationally fixed application of a rotary drive tool, not shown, such as a wrench, by positive locking.
  • a rotary drive tool not shown, such as a wrench
  • the second threaded rods 11 forming the tie rods 12 have hexagon sockets as tool seats 30 for applying an Allen key (not shown) as a rotary drive tool in their front ends remote from the connectors 4 .
  • the attachment 22 is placed on the tie rods 12 protruding from the pressure sleeves 13 and clamped with the second nuts 21 against the contact surfaces 23 on the centering sleeves 20 of the pressure sleeves 13 .
  • the attachment 22 connects the two arranged parallel to each other according to the invention Spacer fastener 1 rigid with each other.
  • the extensions 3 of the spacer fasteners 1 hardly bend under a transverse load in the area from the first nuts 16 to the contact surfaces 23.
  • a transverse load is exerted by a weight and/or a wind load on the attachment 22 parallel to the outside 28 of the insulating material 27 and causes a force radially to the spacer fasteners 1.
  • the extensions 3 bend under the transverse load in the area of their connecting sections 24 and thereby adapt to a bending line of the anchor rods 2, the flexural rigidity of which is less than that of the extensions 3 in the area of the pressure sleeves 13, but greater than the flexural rigidity of the connecting sections 24.

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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)
EP22199572.3A 2021-10-20 2022-10-04 Élément de fixation d'espacement, ensemble comprenant deux éléments de fixation d'espacement et élément de fixation d'espacement Pending EP4170103A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021127250.5A DE102021127250A1 (de) 2021-10-20 2021-10-20 Abstandsbefestiger, Anordnung mit zwei Abstandsbefestigern und Abstandsbefestigung

Publications (1)

Publication Number Publication Date
EP4170103A1 true EP4170103A1 (fr) 2023-04-26

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ID=83593859

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22199572.3A Pending EP4170103A1 (fr) 2021-10-20 2022-10-04 Élément de fixation d'espacement, ensemble comprenant deux éléments de fixation d'espacement et élément de fixation d'espacement

Country Status (2)

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EP (1) EP4170103A1 (fr)
DE (1) DE102021127250A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011144282A1 (fr) * 2010-05-19 2011-11-24 Fischerwerke Gmbh & Co. Kg Écarteur destiné à fixer un objet
EP2708760A1 (fr) * 2012-09-14 2014-03-19 Michael Hermes Élément d'isolation d'un agencement d'ancrage mural
EP2821559A1 (fr) 2013-07-03 2015-01-07 Axel Lettmann Entretoise
EP2873784A1 (fr) * 2013-11-15 2015-05-20 Lutz Rolladen-Sonnenschutz Dispositif écarteur

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011144282A1 (fr) * 2010-05-19 2011-11-24 Fischerwerke Gmbh & Co. Kg Écarteur destiné à fixer un objet
EP2708760A1 (fr) * 2012-09-14 2014-03-19 Michael Hermes Élément d'isolation d'un agencement d'ancrage mural
EP2821559A1 (fr) 2013-07-03 2015-01-07 Axel Lettmann Entretoise
EP2873784A1 (fr) * 2013-11-15 2015-05-20 Lutz Rolladen-Sonnenschutz Dispositif écarteur

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Publication number Publication date
DE102021127250A1 (de) 2023-04-20

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