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EP0034344B1 - Plug for fixing radiators - Google Patents

Plug for fixing radiators Download PDF

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Publication number
EP0034344B1
EP0034344B1 EP81101004A EP81101004A EP0034344B1 EP 0034344 B1 EP0034344 B1 EP 0034344B1 EP 81101004 A EP81101004 A EP 81101004A EP 81101004 A EP81101004 A EP 81101004A EP 0034344 B1 EP0034344 B1 EP 0034344B1
Authority
EP
European Patent Office
Prior art keywords
tube
expanding tube
expanding
expansion tube
radiator
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.)
Expired
Application number
EP81101004A
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German (de)
French (fr)
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EP0034344A1 (en
Inventor
Anton Gerhard
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT81101004T priority Critical patent/ATE2804T1/en
Publication of EP0034344A1 publication Critical patent/EP0034344A1/en
Application granted granted Critical
Publication of EP0034344B1 publication Critical patent/EP0034344B1/en
Expired legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/02—Arrangement of mountings or supports for radiators
    • F24D19/0203—Types of supporting means
    • F24D19/0206—Tube shaped supports inserted into a wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
    • F24D19/00—Details
    • F24D19/02—Arrangement of mountings or supports for radiators

Definitions

  • the invention relates to a radiator plug according to the preamble of claim 1.
  • Such a radiator plug is described in DE-U-7709208 and in DE-U-7524977. It is an expansion tube clamping dowel with a specially designed holding head for holding the edge of a heating radiator at a defined distance in front of a supporting structure.
  • This radiator plug which has proven itself on the market literally millions of times, has the economic disadvantage of a large plastic requirement and comparatively long cooling times for the plastic holding part in the injection mold.
  • radiator plug which was replaced by the aforementioned and is described in DE-B-21 35 863, has the advantage of a less voluminous and material-strong plastic holding part on the front end of the expansion tube and also the particular advantage, place the retaining edge of the radiator directly at the final mounting height on the radiator plug and fix it axially without having to lift it radially with respect to the longitudinal axis of the radiator plug in the course of the fixing;
  • a disadvantage of this older design, however, is that only a comparatively short axial area of the radiator plug is available for attaching the holding edge of the heating radiator, which complicates the assembly work, particularly in the case of cramped spatial conditions.
  • a radiator dowel is known in which the plastic holding part engages like a plug in the front opening of the expansion tube and in front of the expansion tube or in the region of the front end of the expansion tube of a much larger diameter is frustoconical to the expansion tube diameter rejuvenated. Due to the large material requirement for the plastic holding part, there are even less favorable conditions in terms of material costs and manufacturing costs than with the holding part according to the prior art radiator dowel mentioned at the beginning.
  • the design of the mounting part according to DE-A-2233521 which merely protrudes into the end opening of the expansion tube, has the further disadvantage that the expansion tube, which is generally provided with a continuous longitudinal slot, expands under radial stress and the engaging area of the mounting part bends out.
  • the variant according to this prior publication in which the holding part ends with a truncated cone-shaped wall on the outer surface of the expansion tube, has, in addition to the injection molding disadvantages and the cost disadvantages due to the material requirement, the application-oriented disadvantage of pulling back the mounting edge of the heavy heating radiator along the expansion tube outer surface towards the transverse notch in the holder part at the front end of the holder part either having to overcome an obstacle or, in the case of a holder part that runs out too thinly, causing a material compression in the axial direction, with the result that the material is either destroyed or also again there is a step to overcome.
  • radiator dowel From DE-A-1814499 a radiator dowel is known in which the holding part is formed in one piece with the clamping screw screw head, the outside diameter of which does not exceed the largest outside diameter of the expansion tube, which is a comparatively flat transverse notch for receiving the holding edge of the heating radiator and corresponding complication in handling in the event of installation.
  • a disadvantage of this radiator dowel is also that the head part, i.e. the holding part with the transverse groove for receiving the holding edge of the heating radiator, engages again plug-like in the front opening of the slotted expansion tube, with the already described risk of deformation of the expansion tube and undesired displacement of the Holding wedge for transverse loads.
  • a genus-like radiator mounting bracket which is designed as a sleeve-shaped, tapered weft tube with a longitudinally arranged outside rib with mounting notches, the front also facilitating the turning of the rib into the mounting structure
  • the edge of the rib is chamfered in the direction of the impact sleeve.
  • such a radiator console does not provide any defined attachment conditions.
  • a disadvantage of fastening devices of a generic type in which, as in the two aforementioned cases, the console or the front element made of metal directly supports the metal radiator or a metal fastening construction of the radiator, is also particularly disadvantageous in that thermal voltages lead to considerable noise development and thus to faults in living space. and lead bedrooms.
  • the invention has for its object a radiator anchor of the generic type to further develop that the advantages of a secure seat in a deep cross-notch in the plastic mounting part and a simple operation when hanging the radiator are retained but the material and manufacturing costs can be significantly reduced.
  • the supporting edge of the radiator sheet can be placed anywhere on the tensioning tube already anchored in the holding bore and retracted until it snaps into the transverse notch of the holding part, without interference during the transition from the outer surface of the expansion tube to the outer surface of the plastic bracket part, because the ramp-shaped shape in the expansion tube outer surface ensures wear-free, safe lifting of the overlying edge.
  • the axial overall length of the plastic mounting part can be kept extremely short, namely so short that the outer end of the spreader tube is securely encircled behind the steep flank of the ramp-shaped configuration, in order to reliably prevent deformation of the spreader tube even when subjected to considerable transverse loads.
  • the alternative - or even additional - measure according to claim 4 also prevents the slotted front end of the expansion tube from deforming even in the event of heavy transverse loads and thus prevents the mounting part from tilting on the expansion tube.
  • this measure promotes the advantageous further development according to claim 5, in which a clear mutual association of the expansion tube and the mounting part in the course of the assembly of the radiator dowel, in the formation of the ramp-shaped configuration in the most stable region of the expansion tube, in addition to an increase in stability by peripheral support of the opposing flanks of the slotted one Spreader tube front end is guaranteed.
  • the radiator plug essentially consists of a metal expansion tube 1 with a front-engaging expansion body 2 in the form of a truncated cone with a coaxial bore with an internal thread 3, a clamping screw 4 with its threaded shaft 5 extending into the internal thread 3 of the expansion body. From the rear end 6, the threaded shaft 5 protrudes from the forehead of the expansion tube 1, in order to end - in the example shown - in a screw head 7 with cross recess 8 for attaching a screwdriver.
  • the expansion tube 1 has a slot 9 running along a generatrix of its lateral surface and also at least one further slot 10 in its front region 11.
  • the largest diameter of the expansion body 2 corresponds to the outer diameter of the expansion tube 1, so that when the expansion body 2 is pulled into the expansion tube 1 due to the tightening of the tensioning screw 4, the wall between the slots 9 and 10 is spread radially in the manner of a tab.
  • this front area 11 of the radiator dowel is located in a receiving bore in a supporting structure or other support structure, then by pulling in the expansion body 2, the diameter of the expansion tube 1 in the front area 11 is increased by a maximum of twice the wall thickness of the expansion tube 1 Turning the clamping screw 4 of the expansion body 2 does not rotate, it is equipped on its outer surface with an axially parallel rib 12 which engages in one of the slots 9, 10 and is supported there peripherally.
  • a holding part 13 preferably a plastic injection-molded part, is pushed axially over the end of the expansion tube 1.
  • This holding part 13 is essentially cylindrical and has a coaxial Blind hole 14 equipped, the inner diameter of which corresponds to the outer diameter of the expansion tube 1.
  • the bottom 15 of this blind hole 14 is provided with an opening 16 through which the threaded shaft 5 of the clamping screw 4 extends.
  • the screw head 7 (or, in the case of a headless threaded shaft, a clamping nut) bears against the face 15 on the end face.
  • a straight-line or slightly curved notch 17 which extends transversely to the longitudinal axis of the expansion tube 1 and is essentially V-like in cross section, is formed in the lateral surface of the mounting part 13 Radial distance from the longitudinal axis of the expansion tube 1 protrudes, which is smaller than the outer diameter of the expansion tube 1.
  • the front boundary of this transverse notch 17 merges into a tab 19 which extends transversely to the longitudinal axis of the holding part 13 and radially projects beyond the outer wall surface of the hollow cylindrical part 21 of the holding part 13.
  • the cylindrical disk-shaped screw head 7 lies in a recess 20, which is coaxial with the opening 16 and is also cylindrical disk-shaped, on the outer end face of the holding part 13, the system being flat. It is possible that a cup-shaped cover cap (not shown in the drawing) can be clamped in the axial direction in a known manner for the optical covering of the screw head 7.
  • the depth of the blind hole 14 corresponds approximately to the outside diameter of the expansion tube 1, and the wall thickness of this hollow cylindrical part 21 of the mounting part 13 is approximately equal to the wall thickness of the expansion tube 1 or slightly thicker than that.
  • a ramp-shaped configuration 23 is formed on the wall of the expansion tube 1.
  • a narrow transverse slot 24 of limited length in the order of magnitude of 17% to 23% of the circumference of the expansion tube 1, is pierced into the wall of the expansion tube immediately in front of the front end 22 of the hollow-cylindrical mounting part 21 and which extends towards the front, to the expansion body 2 adjoining wall is partially wedge-shaped, and preferably already in the flat sheet metal part in the course of the reeving of the further slots 10 before the sheet metal part rolls into the expansion tube 1.
  • this configuration 23 is at its highest point, that is to say at the transverse slot 24 on the undeformed outer circumferential surface of the expansion tube 1 is 0.2 to 0.5 mm larger than the wall thickness of the hollow cylindrical mounting part 21.
  • the axial length of this ramp-shaped configuration 23 is of the order of magnitude of the outside diameter of the expansion tube 1, possibly even more . Laterally, this area of the shape 23, which rises highest over the cylindrical outer surface of the expansion tube 1, merges much more steeply into the undeformed cylinder surface of the expansion tube 1.
  • a nose 27 provides the advantage of being able to ensure a clear positioning of the holding part 13 with its end stop tab 19 in relation to the ramp-shaped configuration 23 on the expansion tube 1; because in the case of assembly with an orientation that is mistakenly rotated about the common longitudinal axis, the front end of the nose 27 would not engage in the continuous slot 9 diametrically opposite the ramp-shaped configuration 23, but would strike in front of the rear end 6 of the expansion tube 1, so that the opening of the blind hole 14 with the front wall end 22 cannot be pushed axially up to the steep flank of the shape 23, an incorrect assembly which is immediately noticeable and can also be easily detected and corrected by automatic assembly.
  • the expansion tube 1 is inserted with its front region 11 forward into a mounting hole in a load-bearing construction until the transverse notch 17 in the holding part 13 takes up a desirable distance in front of this supporting structure, and then anchors the expansion tube 1 in the mounting hole by tightening the clamping screw 4, that is to say by pulling in the expansion body 2 while simultaneously pressing the mounting part 13 against the front end 6 of the expansion tube 1 .
  • the mounting edge of a radiator plate or a radiator mounting bracket is placed in front of the ramp-shaped shape 23 on the outer surface of the expansion tube 1 and then pulled back to the adjacent space, i.e. in the direction of the stop tab 19, initially over the outside surface of the hollow cylindrical mounting. Part 21 is pushed up and then falls back on it.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Clamps And Clips (AREA)
  • External Artificial Organs (AREA)
  • Dowels (AREA)
  • Cable Accessories (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Safety Valves (AREA)
  • Resistance Heating (AREA)
  • Baking, Grill, Roasting (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)

Abstract

1. Radiator plug, consisting of a longitudinally slotted metal expanding tube (1) having an expanding element (2) which engages on the front of the tube and a tension bolt (4) which extends through the tube, and of a non-metallic holding or mounting element (13) which is axially mounted on the rear end of the expanding tube (1) and which is provided with a groove or notch running at right angles to the longitudinal axis of the expanding tube and with a part (21) for receiving the rear end of the expanding tube (1) in a blind hole (14), there being provided an inclined face which leads from the outer lateral area of the expanding tube (1) in the direction of the notch or slot, characterized in that the part (21) which receives the rear end of the expanding tube (1) is in the form of a hollow cylinder and its front end (22) is arranged in the wall of the expanding tube (1) after the steep flank or side of a ramp-shaped prominent section (23) which forms the inclined face.

Description

Die Erfindung betrifft einen Heizkörperdübel gemäss dem Oberbegriff des Anspruches 1.The invention relates to a radiator plug according to the preamble of claim 1.

Ein solcher Heizkörperdübel ist im DE-U-7709208 und im DE-U-7524977 beschrieben. Es handelt sich um einen Spreizrohr-Spanndübel mit speziell ausgebildetem Haltekopf zur Halterung der Kante eines Heizradiators in definiertem Abstand vor einem tragenden Bauwerk.Such a radiator plug is described in DE-U-7709208 and in DE-U-7524977. It is an expansion tube clamping dowel with a specially designed holding head for holding the edge of a heating radiator at a defined distance in front of a supporting structure.

Dieser Heizkörperdübel, der sich am Markt buchstäblich millionenfach bewährt hat, weist den wirtschaftlichen Nachteil grossen Kunststoffbedarfes und vergleichsweise langer Abkühlzeiten des Kunststoff-Halterungsteiles in der Spritzgussform auf.This radiator plug, which has proven itself on the market literally millions of times, has the economic disadvantage of a large plastic requirement and comparatively long cooling times for the plastic holding part in the injection mold.

Die Ausbildung eines Heizkörperdübels, die durch den vorgenannten ersetzt wurde und in der DE-B-21 35 863 beschrieben ist, weist zwar den Vorzug eines weniger voluminösen und materialstarken Kunststoff-Halteteiles auf dem stirnseitigen Ende des Spreizrohres und darüber hinaus den besonderen Vorteil auf, die Haltekante des Heizradiators unmittelbar in der endgültigen Montagehöhe auf den Heizkörperdübel aufsetzen und an diesem axial festlegen zu können, ohne ihn im Zuge der Festlegung radial in bezug auf die Längsachse des Heizkörperdübels anheben zu müssen; nachteilig an dieser älteren Ausbildung ist jedoch, dass nur ein vergleichsweise kurzer axialer Bereich des Heizkörperdübels zum Aufsetzen der Haltekante des Heizradiators zur Verfügung steht, was insbesondere unter beengten räumlichen Gegebenheiten die Montagearbeiten erschwert.The formation of a radiator plug, which was replaced by the aforementioned and is described in DE-B-21 35 863, has the advantage of a less voluminous and material-strong plastic holding part on the front end of the expansion tube and also the particular advantage, place the retaining edge of the radiator directly at the final mounting height on the radiator plug and fix it axially without having to lift it radially with respect to the longitudinal axis of the radiator plug in the course of the fixing; A disadvantage of this older design, however, is that only a comparatively short axial area of the radiator plug is available for attaching the holding edge of the heating radiator, which complicates the assembly work, particularly in the case of cramped spatial conditions.

Aus der DE-A-22 33 521 ist ein Heizkörperdübel bekannt, bei dem das Kunststoff-Halteteil stopfenförmig in die stirnseitige Öffnung des Spreizrohres eingreift und vor dem Spreizrohr oder im Bereiche des stirnseitigen Endes des Spreizrohres von einem wesentlich grösseren Durchmesser sich kegelstumpfförmig zum Spreizrohrdurchmesser hin verjüngt. Aufgrund des grossen Materialbedarfes für das Kunststoff-Halteteil liegen hier noch ungünstigere Verhältnisse in bezug auf die Materialkosten und die Fertigungskosten vor, als beim Halteteil gemäss dem eingangs genannten Heizkörperdübel nach dem Stande der Technik. Die lediglich stopfenförmig in die stirnseitige Öffnung des Spreizrohres hineinragende Ausbildung des Halterungsteiles nach der DE-A-2233521 weist darüber hinaus den Nachteil auf, dass das in aller Regel mit einem durchgehenden Längsschlitz versehene Spreizrohr bei Radialbeanspruchung sich aufweitet und der eingreifende Bereich des Halterungsteiles herausknickt. Diejenige Variante gemäss dieser Vorveröffentlichung, bei der das Halterungsteil mit einer kegelstumpfförmigen Wandung auf der Aussenmantelfläche des Spreizrohres endet, weist über die spritzgusstechnischen Nachteile und die Kostennachteile wegen des Materialbedarfes hinaus den anwendungsorientierten Nachteil auf, beim Zurückziehen der Halterungskante des schweren Heizradiators längs der Spreizrohr-Aussenmantelfläche zur Quer-Kerbe im Halterungsteil hin am vorderen Ende des Halterungs- teiles entweder eine hinderliche Stufe überwinden zu müssen oder aber, bei zu dünnwandig auslaufendem Halterungsteil, in axialer Richtung eine Materialstauchung hervorzurufen, mit der Folge, dass das Material entweder zerstört wird oder ebenfalls wieder eine Stufe zu überwinden ist.From DE-A-22 33 521 a radiator dowel is known in which the plastic holding part engages like a plug in the front opening of the expansion tube and in front of the expansion tube or in the region of the front end of the expansion tube of a much larger diameter is frustoconical to the expansion tube diameter rejuvenated. Due to the large material requirement for the plastic holding part, there are even less favorable conditions in terms of material costs and manufacturing costs than with the holding part according to the prior art radiator dowel mentioned at the beginning. The design of the mounting part according to DE-A-2233521, which merely protrudes into the end opening of the expansion tube, has the further disadvantage that the expansion tube, which is generally provided with a continuous longitudinal slot, expands under radial stress and the engaging area of the mounting part bends out. The variant according to this prior publication, in which the holding part ends with a truncated cone-shaped wall on the outer surface of the expansion tube, has, in addition to the injection molding disadvantages and the cost disadvantages due to the material requirement, the application-oriented disadvantage of pulling back the mounting edge of the heavy heating radiator along the expansion tube outer surface towards the transverse notch in the holder part at the front end of the holder part either having to overcome an obstacle or, in the case of a holder part that runs out too thinly, causing a material compression in the axial direction, with the result that the material is either destroyed or also again there is a step to overcome.

Aus der DE-A-1814499 ist ein Heizkörperdübel bekannt, bei dem das Halterungsteil einstückig mit dem Spannschrauben-Schraubenkopf ausgebildet ist, dessen Aussendurchmesser den grössten Aussendurchmesser des Spreizrohres nicht überragt, was eine vergleichsweise nur flache Quer-Kerbe zur Aufnahme der Haltekante des Heizradiators und dementsprechende Erschwernis bei der Handhabung im Montagefalle bedingt. Nachteilig bei diesem Heizkörperdübel ist ausserdem, dass das Kopfteil, also das Halterungsteil mit der Quer-Nut zur Aufnahme der Haltekante des Heizradiators, wieder stopfenförmig in die stirnseitige Öffnung des geschlitzten Spreizrohres hineingreift, mit der schon geschilderten Gefahr einer Verformung des Spreizrohres und unerwünschten Verlagerung des Haltekeiles bei Querbeanspruchung. Die Variante des aus dieser Vorveröffentlichung bekannten Heizkörperdübels, bei der kegelstumpfförmig ausgebildete Spreizrohre schuppenartig ineinandergreifen, weist darüber hinaus noch den erheblichen praktischen Nachteil auf, beim Verspannen in der Montagebohrung eine Abstandsänderung der Quer-Nut in bezug auf die Wandung des tragenden Bauwerkes hinnehmen zu müssen und andererseits die ineinandergreifenden unverspannten Spreizrohrteile noch nicht quer belasten zu können.From DE-A-1814499 a radiator dowel is known in which the holding part is formed in one piece with the clamping screw screw head, the outside diameter of which does not exceed the largest outside diameter of the expansion tube, which is a comparatively flat transverse notch for receiving the holding edge of the heating radiator and corresponding complication in handling in the event of installation. A disadvantage of this radiator dowel is also that the head part, i.e. the holding part with the transverse groove for receiving the holding edge of the heating radiator, engages again plug-like in the front opening of the slotted expansion tube, with the already described risk of deformation of the expansion tube and undesired displacement of the Holding wedge for transverse loads. The variant of the radiator dowel known from this prior publication, in which truncated cone-shaped expansion tubes interlock like scales, also has the considerable practical disadvantage of having to accept a change in the distance of the transverse groove in relation to the wall of the supporting structure when bracing in the mounting hole on the other hand, the interlocking, unstressed expansion tube parts cannot yet be loaded transversely.

Aus dem DE-U-71 00 625 ist eine gattungsähnliche Heizkörper-Halterungskonsole bekannt, die als hülsenförmiges, zugespitztes Einschlagrohr mit einer aussen in Längsrichtung angeordneten Rippe mit Halterungs-Kerben ausgebildet ist, wobei zur Erleichterung des Einschlagens auch der Rippe in die Halterungskonstruktion die vordere Berandung der Rippe in Richtung auf die Einschlaghülse hin abgeschrägt verläuft. Eine solche Heizkörper-Konsole erbringt jedoch keine definierten Befestigungsverhältnisse.From DE-U-71 00 625 a genus-like radiator mounting bracket is known, which is designed as a sleeve-shaped, tapered weft tube with a longitudinally arranged outside rib with mounting notches, the front also facilitating the turning of the rib into the mounting structure The edge of the rib is chamfered in the direction of the impact sleeve. However, such a radiator console does not provide any defined attachment conditions.

Nachteilig bei Befestigungsvorrichtungen gattungsähnlicher Art, bei denen wie in den beiden vorgenannten Fällen die Konsole oder das Stirnelement aus Metall unmittelbar den metallenen Heizkörper oder eine metallene Befestigungskonstruktion des Heizkörpers trägt, ist ferner insbesondere auch, dass Wärmespannungen zu erheblicher Geräuschentwicklung und damit zu Störungen in Wohn- und Schlafräumen führen können.A disadvantage of fastening devices of a generic type, in which, as in the two aforementioned cases, the console or the front element made of metal directly supports the metal radiator or a metal fastening construction of the radiator, is also particularly disadvantageous in that thermal voltages lead to considerable noise development and thus to faults in living space. and lead bedrooms.

Der Erfindung liegt die Aufgabe zugrunde, einen Heizkörperdübel gattungsgemässer Art dahingehend weiterzubilden, dass die Vorteile eines sicheren Sitzes in einer tiefen Quer-Kerbe im Kunststoff-Halterungsteil und eines einfachen Arbeitsvorganges beim Einhängen des Radiators erhalten bleiben aber die Material- und Fertigungskosten spürbar gesenkt werden können.The invention has for its object a radiator anchor of the generic type to further develop that the advantages of a secure seat in a deep cross-notch in the plastic mounting part and a simple operation when hanging the radiator are retained but the material and manufacturing costs can be significantly reduced.

Diese Aufgabe wird erfindungsgemäss bei einem Heizkörperdübel gemäss dem Oberbegriff des Anspruches 1 dadurch gelöst, dass er gemäss dem kennzeichnenden Teil des Anspruches 1 ausgebildetwird.This object is achieved according to the invention in the case of a radiator dowel according to the preamble of claim 1 in that it is designed in accordance with the characterizing part of claim 1.

Bei der erfindungsgemässen Ausgestaltung des Heizkörperdübels kann weiterhin die tragende Kante des Radiatorbleches irgendwo auf dem in der Haltebohrung schon verankerten Spannrohr aufgesetzt und bis zum Einrasten in die Quer-Kerbe des Halterungsteiles zurückgezogen werden, ohne dass sich Störungen beim Übergang von der Aussenmantelfläche des Spreizrohres zur Aussenfläche des Kunststoff-Halterungs- teiles einstellen, weil die rampenförmige Ausprägung in der Spreizrohr-Aussenmantelfläche ein verschleissfreies, sicheres Anheben der aufliegenden Kante gewährleistet. Dadurch kann die axiale Baulänge des Kunststoff-Halterungsteiles extrem kurz gehalten werden, nämlich so kurz, dass gerade noch ein sicheres äusseres Umfassen des Stirnendes des Spreizrohres hinter der Steilflanke der rampenförmigen Ausprägung erfolgt, um auch bei erheblicher Querbeanspruchung eine Verformung des Spreizrohres sicher zu verhindern. Die kurze, also wenig voluminöse Ausbildung des Kunststoff-Halterungsteiles wiederum erbringt eine bemerkenswerte Materialeinsparung und zugleich eine Verkürzung der erforderlichen Abkühlzeit in der Spritzgussform, also eine höhere Fertigungsfrequenz und damit eine Senkung der Fertigungskosten. Die rampenförmige Ausprägung im Spreizrohr schliesslich erbringt keine ins Gewicht fallenden Zusatzkosten, da diese Ausprägung im Zuge des Einstanzens der Spreiz-Schlitze am spreizseitigen, rückwärtigen Ende des Spreizrohres durchgeführt werden kann und hierfür lediglich eine entsprechende Modifikation des Bearbeitungswerkzeuges erforderlich ist, ohne für das Spreizrohr selbst zusätzlich Material zu benötigen oder das Spreizrohr dadurch in unzulässigem Masse zu schwächen.In the case of the inventive design of the radiator dowel, the supporting edge of the radiator sheet can be placed anywhere on the tensioning tube already anchored in the holding bore and retracted until it snaps into the transverse notch of the holding part, without interference during the transition from the outer surface of the expansion tube to the outer surface of the plastic bracket part, because the ramp-shaped shape in the expansion tube outer surface ensures wear-free, safe lifting of the overlying edge. As a result, the axial overall length of the plastic mounting part can be kept extremely short, namely so short that the outer end of the spreader tube is securely encircled behind the steep flank of the ramp-shaped configuration, in order to reliably prevent deformation of the spreader tube even when subjected to considerable transverse loads. The short, that is to say less voluminous, design of the plastic mounting part in turn results in a remarkable saving in material and at the same time a reduction in the cooling time required in the injection mold, that is to say a higher production frequency and thus a reduction in production costs. Finally, the ramp-shaped configuration in the expansion tube does not result in any significant additional costs, since this configuration can be carried out on the expansion-side, rear end of the expansion tube in the course of punching the expansion slots, and only a corresponding modification of the processing tool is required for this, without for the expansion tube itself to require additional material or to weaken the expansion tube to an impermissible extent.

Die Weiterbildung nach Anspruch 2 erbringt den handhabungstechnischen Vorteil, dass beim Zurückschieben der Radiatorkante auf dem Spreizrohr sicher ein vorübergehendes Anheben bis über die rückwärtige Berandung des Kunststoff-Halterungsteiles hinweg und daraufhin ein Absenken auf dessen Aussenmantelfläche erfolgt, also weder stufenförmige Behinderungen zu überwinden sind noch Materialstauchungen oder Zerstörungen im Bereiche einer Anlaufkante des Kunststoffteiles zu befürchten sind.The further development according to claim 2 provides the handling advantage that when the radiator edge is pushed back on the spreader tube, there is surely a temporary lifting up beyond the rear edge of the plastic holding part and then a lowering on its outer surface, i.e. there is no need to overcome step-like disabilities or material compression or damage in the area of a leading edge of the plastic part is to be feared.

Die - als solche bekannte - Massnahme nach Anspruch 3 führt zu einer Steigerung der Stabilität und damit der Querbeanspruchbarkeit des Spreizrohres am rückwärtigen, das Halterungsteil tragenden Ende.The - known as such - measure according to claim 3 leads to an increase in the stability and thus the resistance to transverse loads of the expansion tube at the rear end carrying the mounting part.

Die alternative - oder gar zusätzliche - Massnahme nach Anspruch 4 verhindert ebenfalls ein Verformen des geschlitzten stirnseitigen Endes des Spreizrohres auch bei starker Querbeanspruchung und damit ein Verkanten des Halterungs- teiles auf dem Spreizrohr. Zugleich fördert diese Massnahme die vorteilhafte Weiterbildung nach Anspruch 5, bei der eine eindeutige gegenseitige Zuordnung von Spreizrohr und Halterungsteil im Zuge der Konfektionierung des Heizkörperdübels, bei Ausbildung der rampenförmigen Ausprägung im stabilsten Bereich des Spreizrohres neben einer Stabilitätserhöhung durch periphere Abstützung der einander gegenüberstehenden Flanken des geschlitzten Spreizrohr-Stirnendes, gewährleistet ist.The alternative - or even additional - measure according to claim 4 also prevents the slotted front end of the expansion tube from deforming even in the event of heavy transverse loads and thus prevents the mounting part from tilting on the expansion tube. At the same time, this measure promotes the advantageous further development according to claim 5, in which a clear mutual association of the expansion tube and the mounting part in the course of the assembly of the radiator dowel, in the formation of the ramp-shaped configuration in the most stable region of the expansion tube, in addition to an increase in stability by peripheral support of the opposing flanks of the slotted one Spreader tube front end is guaranteed.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus nachstehender Beschreibung eines in der Zeichnung unter Beschränkung auf das Wesentliche vereinfacht dargestellten bevorzugten Ausführungsbeispieles zur erfindungsgemässen Lösung. Die einzige Figur der Zeichnung zeigt im Mittellängsschnitt einen Heizkörperdübel mit Spreizrohr und stirnseitig aufgestecktem Halterungsteil.Further advantages and features of the invention emerge from the following description of a preferred exemplary embodiment of the solution according to the invention, which is shown in simplified form in the drawing while restricting it to the essentials. The only figure in the drawing shows a radiator dowel with an expansion tube and a mounting part attached to the front in the central longitudinal section.

Der Heizkörperdübel besteht im wesentlichen aus einem metallenen Spreizrohr 1 mit vorne eingreifendem Spreizkörper 2 in Form eines Kegelstumpfes mit koaxialer Bohrung mit Innengewinde 3, wobei eine Spannschraube 4 sich mit ihrem Gewindeschaft 5 bis in das Spreizkörper-Innengewinde 3 hinein erstreckt. Aus dem rückwärtigen Ende 6 ragt der Gewindeschaft 5 aus der Stirn des Spreizrohres 1 heraus, um - im dargestellten Beispielsfalle - in einem Schraubenkopf 7 mit Kreuzschlitz-Einprägung 8 zum Ansetzen eines Schraubendrehers zu enden.The radiator plug essentially consists of a metal expansion tube 1 with a front-engaging expansion body 2 in the form of a truncated cone with a coaxial bore with an internal thread 3, a clamping screw 4 with its threaded shaft 5 extending into the internal thread 3 of the expansion body. From the rear end 6, the threaded shaft 5 protrudes from the forehead of the expansion tube 1, in order to end - in the example shown - in a screw head 7 with cross recess 8 for attaching a screwdriver.

Das Spreizrohr 1 weist einen längs einer Erzeugenden seiner Mantelfläche durchgehenden Schlitz 9 und ausserdem wenigstens einen weiteren Schlitz 10 in seinem vorderen Bereich 11 auf. Der grösste Durchmessr des Spreizkörpers 2 entspricht dem Aussendurchmesser des Spreizrohres 1, so dass beim Hereinziehen des Spreizkörpers 2 in das Spreizrohr 1 aufgrund Anziehens der Spannschraube 4 die Wandung zwischen den Schlitzen 9 und 10 lappenförmig radial aufgespreizt wird. Befindet sich dabei dieser vordere Bereich 11 des Heizkörperdübels in einer Aufnahmebohrung in einem tragenden Bauwerk oder einer sonstigen Halterungskonstruktion, dann erfolgt durch Hineinziehen des Spreizkörpers 2 eine Durchmesservergrösserung des Spreizrohres 1 im vorderen Bereich 11 um maximal das Doppelte der Wandstärke des Spreizrohres 1. Damit sich beim Verdrehen der Spannschraube 4 der Spreizkörper 2 nicht mitdreht, ist er auf seiner Mantelfläche mit einer achsparallel verlaufenden Rippe 12 ausgestattet, die in einen der Schlitze 9, 10 eingreift und sich dort peripher abstützt.The expansion tube 1 has a slot 9 running along a generatrix of its lateral surface and also at least one further slot 10 in its front region 11. The largest diameter of the expansion body 2 corresponds to the outer diameter of the expansion tube 1, so that when the expansion body 2 is pulled into the expansion tube 1 due to the tightening of the tensioning screw 4, the wall between the slots 9 and 10 is spread radially in the manner of a tab. If this front area 11 of the radiator dowel is located in a receiving bore in a supporting structure or other support structure, then by pulling in the expansion body 2, the diameter of the expansion tube 1 in the front area 11 is increased by a maximum of twice the wall thickness of the expansion tube 1 Turning the clamping screw 4 of the expansion body 2 does not rotate, it is equipped on its outer surface with an axially parallel rib 12 which engages in one of the slots 9, 10 and is supported there peripherally.

Am rückwärtigen Ende 6 ist über die Stirn des Spreizrohres 1 ein Halterungsteil 13, vorzugsweise ein Kunststoff-Spritzgussteil, axial aufgeschoben. Dieses Halterungsteil 13 ist im wesentlichen zylindrisch ausgebildet und mit einem koaxialen Sackloch 14 ausgestattet, dessen Innendurchmesser dem Aussendurchmesser des Spreizrohres 1 entspricht. Der Boden 15 dieses Sackloches 14 ist mit einer Durchbrechung 16 versehen, durch die hindurch der Gewindeschaft 5 der Spannschraube 4 verläuft. Stirnseitig liegt gegen den Boden 15 der Schraubenkopf 7 (oder, bei einem kopflosen Gewindeschaft, eine Spannmutter) an.At the rear end 6, a holding part 13, preferably a plastic injection-molded part, is pushed axially over the end of the expansion tube 1. This holding part 13 is essentially cylindrical and has a coaxial Blind hole 14 equipped, the inner diameter of which corresponds to the outer diameter of the expansion tube 1. The bottom 15 of this blind hole 14 is provided with an opening 16 through which the threaded shaft 5 of the clamping screw 4 extends. The screw head 7 (or, in the case of a headless threaded shaft, a clamping nut) bears against the face 15 on the end face.

Vor der Stirn des rückwärtigen Endes 6 des Spreizrohres 1 ist in der Mantelfläche des Halterungsteiles 13 eine quer zur Längsachse des Spreizrohres 1 sich erstreckende und geradlinige oder leicht gebogene Kerbe 17 mit im wesentlichen V-ähnlichem Querschnitt ausgebildet, die mit ihrem Grund 18 bis auf einen radialen Abstand von der Längsachse des Spreizrohres 1 hinabragt, der kleiner als der Aussenhalbmesser des Spreizrohres 1 ist. Die vordere Begrenzung dieser Quer-Kerbe 17 geht in eine quer zur Längsachse des Halterungsteiles 13 sich erstreckende, die Aussenwandfläche des hohlzylindrischen Teiles 21 des Halterungsteiles 13 radial überragende Lasche 19 über. Der zylinderscheibenförmige Schraubenkopf 7 liegt in einer mit der Durchbrechung 16 koaxialen, ebenfalls zylinderscheibenförmigen Ausnehmung 20 an der äusseren Stirnseite des Halterungsteiles 13, wobei die Anlage ebenflächig ist. Es ist möglich, dass in bekannter Weise zur optischen Abdeckung des Schraubenkopfes 7 in axialer Richtung eine (in der Zeichnung nicht dargestellte) topfförmige Abdeckkappe aufgeklemmt werden kann.In front of the forehead of the rear end 6 of the expansion tube 1, a straight-line or slightly curved notch 17, which extends transversely to the longitudinal axis of the expansion tube 1 and is essentially V-like in cross section, is formed in the lateral surface of the mounting part 13 Radial distance from the longitudinal axis of the expansion tube 1 protrudes, which is smaller than the outer diameter of the expansion tube 1. The front boundary of this transverse notch 17 merges into a tab 19 which extends transversely to the longitudinal axis of the holding part 13 and radially projects beyond the outer wall surface of the hollow cylindrical part 21 of the holding part 13. The cylindrical disk-shaped screw head 7 lies in a recess 20, which is coaxial with the opening 16 and is also cylindrical disk-shaped, on the outer end face of the holding part 13, the system being flat. It is possible that a cup-shaped cover cap (not shown in the drawing) can be clamped in the axial direction in a known manner for the optical covering of the screw head 7.

Wie aus der angenähert massstabsgerechten Darstellung der Zeichnung ersichtlich, entspricht die Tiefe des Sackloches 14 etwa dem Aussendurchmesser des Spreizrohres 1, und die Wandungsstärke dieses hohlzylindrischen Teiles 21 des Halterungteiles 13 ist etwa gleich der Wandstärke des Spreizrohres 1 oder geringfügig stärker als jene.As can be seen from the approximately true-to-scale representation of the drawing, the depth of the blind hole 14 corresponds approximately to the outside diameter of the expansion tube 1, and the wall thickness of this hollow cylindrical part 21 of the mounting part 13 is approximately equal to the wall thickness of the expansion tube 1 or slightly thicker than that.

Unmittelbar vor dem vorderen Stirnende 22 dieses hohlzylindrischen Teiles 21, also vor der Öffnung des Sackloches 14, ist an der Wandung des Spreizrohres 1 eine rampenförmige Ausprägung 23 ausgebildet. Dafür ist ein schmaler Querschlitz 24 begrenzter Länge, in der Grössenordnung von 17% bis 23% des Umfanges des Spreizrohres 1, in die Spreizrohr-Wandung unmittelbar vor dem vorderen Stirnende 22 des hohlzylindrischen Halterungs-Teils 21 eingestochen und die sich nach vorne, zum Spreizkörper 2 hin anschliessende Wandung bereichsweise keilförmig ausgestaucht, und zwar vorzugsweise bereits im noch ebenen schmalen Blechteil im Zuge des Ausscherens der weiteren Schlitze 10 vor dem Einrollen des Blechteiles zum Spreizrohr 1. Die Höhe dieser Ausprägung 23 an ihrer höchsten Stelle, also am Querschlitz 24, bezogen auf die unverformte Aussenmantelfläche des Spreizrohres 1, ist 0,2 bis 0,5 mm grösser als die Wandungsstärke des hohlzylindrischen Halterungs- Teiles 21. Die axiale Länge dieser rampenförmigen Ausprägung 23 liegt in der Grössenordnung des Aussendurchmessers des Spreizrohres 1, ggf. auch noch darüber. Seitlich geht dieser am höchsten über die zylindrische Aussenmantelfläche des Spreizrohres 1 sich erhebende Bereich der Ausprägung 23 wesentlich steiler in die unverformte Zylindermantelfläche des Spreizrohres 1 über.Immediately in front of the front end 22 of this hollow cylindrical part 21, that is to say in front of the opening of the blind hole 14, a ramp-shaped configuration 23 is formed on the wall of the expansion tube 1. For this purpose, a narrow transverse slot 24 of limited length, in the order of magnitude of 17% to 23% of the circumference of the expansion tube 1, is pierced into the wall of the expansion tube immediately in front of the front end 22 of the hollow-cylindrical mounting part 21 and which extends towards the front, to the expansion body 2 adjoining wall is partially wedge-shaped, and preferably already in the flat sheet metal part in the course of the reeving of the further slots 10 before the sheet metal part rolls into the expansion tube 1. The height of this configuration 23 is at its highest point, that is to say at the transverse slot 24 on the undeformed outer circumferential surface of the expansion tube 1 is 0.2 to 0.5 mm larger than the wall thickness of the hollow cylindrical mounting part 21. The axial length of this ramp-shaped configuration 23 is of the order of magnitude of the outside diameter of the expansion tube 1, possibly even more . Laterally, this area of the shape 23, which rises highest over the cylindrical outer surface of the expansion tube 1, merges much more steeply into the undeformed cylinder surface of the expansion tube 1.

Um bei Querbelastung des Halterungsteiles 13 im Bereiche seiner Quer-Kerbe 17 ein radiales Zusammendrücken des vorderen Bereiches 11 des geschlitzten Spreizrohres 1, also eine Verringerung der Breite des durchgehenden Schlitzes 9 und damit ein Verkanten des hohlzylindrischen Halterungs-Teiles 21 in bezug auf die Mittellängsachse des Spreizrohres 1 mit der Gefahr, dass sein vorderes Stirnende 22 sich von der Aussenmantelfläche des Spreizrohres 1 abhebt und über die höchste Erhebung der Ausprägung 23 radial vorsteht, zu vermeiden, kann es zweckmässig sein, im Boden 15 des Sackloches 14 eine ringförmige Nut 25 von der Stärke der Wandung des Spreizrohres 1 auszubilden, in die das rückwärtige oder Stirn-Ende 6 des Spreizrohres 1 formschlüssig eingreift, so dass sich ein für Durchgang des Gewindeschaftes 5 längs durchbohrter Stopfen 26 in die stirnseitige Öffnung des Spreizrohres 1 hineinerstreckt. Dadurch ist auch bei Querbelastung des Halterungsteiles 13 ein radiales Stauchen des Spreizrohres 1 und somit ein Verkippen des Halterungsteiles 13 sicher vermieden.To radially compress the front region 11 of the slotted expansion tube 1 in the region of its transverse notch 17 in the region of its transverse notch 17, that is to say to reduce the width of the continuous slot 9 and thus tilt the hollow-cylindrical holder part 21 with respect to the central longitudinal axis of the To avoid expansion tube 1 with the risk that its front end 22 will lift off the outer surface of the expansion tube 1 and protrude radially beyond the highest elevation of the shape 23, it may be expedient to have an annular groove 25 in the bottom 15 of the blind hole 14 To form the thickness of the wall of the expansion tube 1, in which the rear or front end 6 of the expansion tube 1 engages in a form-fitting manner, so that a plug 26 which is drilled lengthways for the passage of the threaded shaft 5 extends into the front opening of the expansion tube 1. As a result, radial compression of the expansion tube 1 and thus tilting of the mounting part 13 is reliably avoided even when the mounting part 13 is loaded transversely.

Es genügt aber auch, an der Peripherie des Sackloch-Bodens 15 eine rippenförmige Nase 27 auszubilden, die in das stirnseitige Ende des durchgehenden Spreizrohr-Schlitzes 9 eingreift und die einander gegenüberliegenden Flanken peripher abstützt, so dass ebenfalls wieder ein Zusammenstauchen des Endes 6 des Spreizrohres 1 und damit ein Verkanten des Halterungsteiles 3 sicher unterbunden ist. In der Zeichnung sind beide Massnahmen gleichzeitig dargestllt, obwohl für die Praxis die Beschränkung auf eine Massnahme genügt.However, it is also sufficient to form a rib-shaped nose 27 on the periphery of the blind hole bottom 15, which engages in the front end of the continuous expansion tube slot 9 and supports the opposite flanks peripherally, so that the end 6 of the expansion tube is also compressed again 1 and thus tilting of the mounting part 3 is reliably prevented. Both measures are shown in the drawing at the same time, although in practice the restriction to one measure is sufficient.

Die Ausbildung einer Nase 27 erbringt den Vorteil, eine eindeutige Positionierung des Halterungsteiles 13 mit seiner stirnseitigen Anschlag-Lasche 19 in bezug auf die rampenförmige Ausprägung 23 am Spreizrohr 1 sicherstellen zu können; denn im Falle einer Montage mit irrtümlich um die gemeinsame Längsachse gegenseitig verdrehter Orientierung würde das vordere Ende der Nase 27 nicht in den der rampenförmigen Ausprägung 23 diametral gegenüberliegenden durchgehenden Schlitz 9 eingreifen, sondern vor das rückwärtige Stirn-Ende 6 des Spreizrohres 1 anschlagen, so dass die Öffnung des Sackloches 14 mit dem vorderen Wandungs-Stirnende 22 nicht bis an die Steilflanke der Ausprägung 23 axial herangeschoben werden kann, eine Fehlmontage, die sofort auffällt und auch bei der automatischen Bestückung leicht maschinell erfassbar und korrigierbar ist.The formation of a nose 27 provides the advantage of being able to ensure a clear positioning of the holding part 13 with its end stop tab 19 in relation to the ramp-shaped configuration 23 on the expansion tube 1; because in the case of assembly with an orientation that is mistakenly rotated about the common longitudinal axis, the front end of the nose 27 would not engage in the continuous slot 9 diametrically opposite the ramp-shaped configuration 23, but would strike in front of the rear end 6 of the expansion tube 1, so that the opening of the blind hole 14 with the front wall end 22 cannot be pushed axially up to the steep flank of the shape 23, an incorrect assembly which is immediately noticeable and can also be easily detected and corrected by automatic assembly.

Im Anwendungsfalle des Heizkörperdübels wird das Spreizrohr 1 mit seinem vorderen Bereich 11 voran so tief in eine Montagebohrung in einer tragenden Konstruktion eingeschoben, bis die Quer-Kerbe 17 im Halterungsteil 13 einen wünschenswerten Abstand vor dieser Tragkonstruktion einnimmt, und dann das Spreizrohr 1 in der Montagebohrung durch Festziehen der Spannschraube 4, also durch Hereinziehen des Spreizkörpers 2 unter gleichzeitigem Anpressen des Halterungsteiles 13 gegen das Stirnende 6 des Spreizrohres 1 verankert. Die Halterungskante eines Radiatorbleches oder eines Heizkörper-Montagewinkels wird vor der rampenförmigen Ausprägung 23 auf die Aussenmantelfläche des Spreizrohres 1 aufgesetzt und dann zum benachbarten Raum hin, also in Richtung auf die Anschlag-Lasche 19 zurückgezogen, wobei sie zunächst über die Aussenmantelfläche des hohlzylindrischen Halterungs-Teiles 21 hochgeschoben wird und dann hierauf zurückfällt. Auf dieser Aussenmantelfläche erfolgt ein weiteres Zurückschieben bis zum Eingriff in die Quer-Kerbe 17 hinein, so dass die Halterungs- und Orientierungskante nun wieder wenigstens angenähert in der Höhe des Aussendurchmessers des Spreizrohres 1, bezogen auf die Spreizrohr-Längsachse, gelegen ist, was der Orientierung beim Einbringen der Montage-Bohrung in das tragende Bauwerk entspricht.In the case of the radiator dowel, the expansion tube 1 is inserted with its front region 11 forward into a mounting hole in a load-bearing construction until the transverse notch 17 in the holding part 13 takes up a desirable distance in front of this supporting structure, and then anchors the expansion tube 1 in the mounting hole by tightening the clamping screw 4, that is to say by pulling in the expansion body 2 while simultaneously pressing the mounting part 13 against the front end 6 of the expansion tube 1 . The mounting edge of a radiator plate or a radiator mounting bracket is placed in front of the ramp-shaped shape 23 on the outer surface of the expansion tube 1 and then pulled back to the adjacent space, i.e. in the direction of the stop tab 19, initially over the outside surface of the hollow cylindrical mounting. Part 21 is pushed up and then falls back on it. On this outer lateral surface there is a further pushing back until it engages in the transverse notch 17, so that the holding and orientation edge is again at least approximately at the height of the outer diameter of the expanding tube 1, based on the longitudinal axis of the expanding tube, which is the Orientation when drilling the mounting hole in the supporting structure corresponds.

Claims (5)

1. Radiator plug, consisting of a longitudinally slotted metal expanding tube (1) having an expanding element (2) which engages on the front of the tube and a tension bolt (4) which extends through the tube, and of a non-metallic holding or mounting element (13) which is axially mounted on the rear end of the expanding tube (1) and which is provided with a groove or notch running at right angles to the longitudinal axis of the expanding tube and with a part (21) for receiving the rear end of the expanding tube (1) in a blind hole (14), there being provided an inclined face which leads from the outer lateral area of the expanding tube (1) in the direction of the notch or slot, characterised in that the part (21) which receives the rear end of the expanding tube (1) is in the form of a hollow cylinder and its front end (22) is arranged in the wall of the expanding tube (1) after the steep flank or side of a ramp-shaped prominent section (23) which forms the inclined face.
2. Radiator plug according to Claim 1, characterised in that the prominent section (23) extends upwards and slightly radially away from the central longitudinal axis of the expanding tube (1) via the adjacent outer lateral face of the hollow cylindrical part (21) of the holding or mounting element (13).
3. Radiator plug according to Claim 1 or 2, characterised in that the hollow cylindrical part (21) of the holding element (13), acting as a blind hole (14), is provided with an annular groove (25) in the bottom (15) of the blind hole, into which groove the rear end (6) of the expanding tube (1) projects axially.
4. Radiator plug according to any one of the preceding Claims, characterised in that the hollow cylindrical part (21) of the holding or mounting element (13) is in the form of a blind hole (14), at the bottom (15) of which there is formed a heel or projection (27) which engages in the front end of a through slot (9) in the expanding tube (1).
5. Radiator plug according to Claim 4, characterised in that the prominent section (23) is designed so as to be diametrically opposite the through slot (9) in the wall of the expanding tube (1
EP81101004A 1980-02-19 1981-02-13 Plug for fixing radiators Expired EP0034344B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81101004T ATE2804T1 (en) 1980-02-19 1981-02-13 RADIATOR DOWELS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3006187A DE3006187C2 (en) 1980-02-19 1980-02-19 Radiator dowels
DE3006187 1980-02-19

Publications (2)

Publication Number Publication Date
EP0034344A1 EP0034344A1 (en) 1981-08-26
EP0034344B1 true EP0034344B1 (en) 1983-03-16

Family

ID=6095001

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81101004A Expired EP0034344B1 (en) 1980-02-19 1981-02-13 Plug for fixing radiators

Country Status (5)

Country Link
EP (1) EP0034344B1 (en)
AT (1) ATE2804T1 (en)
DE (1) DE3006187C2 (en)
DK (1) DK73281A (en)
NO (1) NO148724C (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1814499A1 (en) * 1968-08-30 1970-09-24 Max Mayer Clamping dowel that can be used in buildings for fastening and carrying objects, especially for carrying heating radiators
DE7100625U (en) * 1971-04-08 Baufa Werke Rinker R Console, especially for holding radiators
DE2233521A1 (en) * 1972-07-07 1974-01-24 Max Mayer MOUNTING HEAD FOR TENSIONING DOWEL TO ACCEPT RADIATORS
DE7524977U (en) * 1975-08-06 1975-12-18 Hilti Ag Expansion anchor with holding head
DE7709208U1 (en) * 1977-03-24 1977-07-07 Ehrich, Wolfgang, 7531 Tiefenbronn Retaining anchor for radiators

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7100625U (en) * 1971-04-08 Baufa Werke Rinker R Console, especially for holding radiators
DE1814499A1 (en) * 1968-08-30 1970-09-24 Max Mayer Clamping dowel that can be used in buildings for fastening and carrying objects, especially for carrying heating radiators
DE2233521A1 (en) * 1972-07-07 1974-01-24 Max Mayer MOUNTING HEAD FOR TENSIONING DOWEL TO ACCEPT RADIATORS
DE7524977U (en) * 1975-08-06 1975-12-18 Hilti Ag Expansion anchor with holding head
DE7709208U1 (en) * 1977-03-24 1977-07-07 Ehrich, Wolfgang, 7531 Tiefenbronn Retaining anchor for radiators

Also Published As

Publication number Publication date
NO810540L (en) 1981-08-20
EP0034344A1 (en) 1981-08-26
DE3006187C2 (en) 1982-09-09
DE3006187A1 (en) 1981-08-20
NO148724B (en) 1983-08-22
DK73281A (en) 1981-08-20
ATE2804T1 (en) 1983-04-15
NO148724C (en) 1983-11-30

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