EP0860617B2 - Hammer head screw for fastening to the ceiling - Google Patents

Hammer head screw for fastening to the ceiling Download PDF

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Publication number
EP0860617B2
EP0860617B2 EP97121929A EP97121929A EP0860617B2 EP 0860617 B2 EP0860617 B2 EP 0860617B2 EP 97121929 A EP97121929 A EP 97121929A EP 97121929 A EP97121929 A EP 97121929A EP 0860617 B2 EP0860617 B2 EP 0860617B2
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EP
European Patent Office
Prior art keywords
screw
head
mounting rail
hammer head
bolt
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.)
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EP97121929A
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German (de)
French (fr)
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EP0860617B1 (en
EP0860617A1 (en
Inventor
Helmut Schulte
Gerhard Kirschenmann
Günter Seibold
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Fischerwerke Artur Fischer GmbH and Co KG
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Fischerwerke Artur Fischer GmbH and Co KG
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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
    • E04B9/00—Ceilings; Construction of ceilings, e.g. false ceilings; Ceiling construction with regard to insulation
    • E04B9/18—Means for suspending the supporting construction

Definitions

  • the invention relates to a hammer head screw for ceiling mounting with the features of the preamble of claim 1 (US 3 483 910 A).
  • hammer head is meant a screw head having different dimensions in the longitudinal and transverse directions, so for example a rectangular, rhomboid or parallelogram-shaped screw head.
  • an oval or elliptical screw head would also be conceivable.
  • Another hammerhead bolt is known from BIS-Walraven.
  • the known hammer head screw is provided for positive insertion into a longitudinal slot having box profile mounting rail.
  • the screw head can be aligned in the direction of the slot through this insert into the mounting rail and bring by rotation by about 90 ° into engagement with the box profile formed laterally of the slot undercuts.
  • An attached under the screw head to a screw shaft plastic spring element with semi-annular spring wings is supported laterally of the slot on an outer side of the mounting rail.
  • the spring element presses the hammer head screw in the axial direction from the fastening rail and thereby the screw head in contact with the undercuts of the mounting rail.
  • the hammer head bolt is provisionally clamped to the mounting rail.
  • the hammer head screw unintentionally falls out after insertion into the mounting rail again or shifts unintentionally in the longitudinal direction of the mounting rail.
  • An intentional displacement by overcoming the clamping force of the spring element for positioning the hammer head screw is possible.
  • the spring element ensures, for example, when perpendicularly mounted on a wall mounting rail a right angle projection of the hammer head screw.
  • the known hammer head screw has the disadvantage that its spring element is a geometrically complicated molded plastic injection-molded part, the production and attachment to the hammer head screw is complicated and expensive.
  • the invention has the object of providing a hammer head screw of the type mentioned in such a way that it is easier and inexpensive to produce.
  • the hammer head screw according to the invention has a rubber-elastic tension spring element, which uses the clamping element to the screw head.
  • the provisional clamping of the hammer head screw on the mounting rail is done with the clamping element, which is pulled by the tension spring element to the screw head and presses against the mounting rail from the outside.
  • a rubber ring is available as a mass-produced very reasonably priced.
  • Another advantage is that the tension spring element can easily install the screw head spanning the clamping element, which facilitates the assembly of the individual parts of the hammer head screw according to the invention.
  • the clamping element is a perforated disc. This may have recesses, for example, short slots or recesses directed towards the center of the disk of its peripheral edge for engagement of the tension spring element. Also, the elastic band in embodiments of the invention, slits, eyes, or teardrop-shaped thickenings for attachment to the clamping element or the screw head have.
  • the hammer head screw according to the invention has a cooperating with the mounting rail device for limiting the rotation angle.
  • the rotation angle limitation is effected in embodiments of the invention in that the screw head is longer than an inner width of the mounting rail.
  • the hammer head screw can be turned only after insertion of its screw head until its screw head abuts against inner sides of the walls of the mounting rail. In this position, he engages behind the undercuts of the mounting rail side of her slot. As a result, an intended angular orientation of the screw head of the hammer head screw with respect to the fastening rail and thus a sufficiently large rear grip of the hammer head screw according to the invention is ensured.
  • suitable screw head shapes are parallelograms or diamonds or rectangles in which two diametrically opposite edges are beveled or rounded, so that the diagonal of the screw head in the direction of the beveled or rounded corners shorter than the inner width of the mounting rail. Also, a rotation angle limit by a corresponding cross-sectional configuration of the screw shaft below the screw head, which cooperates with the slot of the mounting rail is possible.
  • the screw head on its underside have a transverse to its longitudinal direction extending paragraph whose width is slightly smaller than the inside width of the slot of the mounting rail.
  • the hammerhead screw 10 according to the invention, shown in FIG. 2, is provided for fastening, for example, to an attachment rail 12, as shown in FIG.
  • the mounting rail 12 has a rectangular tube profile, it has a longitudinally continuous slot 14 in one of its broad sides.
  • the mounting rail 12 is attached to a ceiling or wall of a building (not shown).
  • pipes or air ducts for sanitary, heating, ventilation or air conditioning systems can be attached to the mounting rail 12.
  • the screw head 16 of the hammer head screw 10 shown in Figure 2 has the shape of a parallelogram with different side lengths. Instead of two corners, the screw head 16 on its shorter diagonal curves 18 (see Figure 3).
  • the screw head 16 is slightly narrower than the slot 14 of the mounting rail 12, its shorter diagonal is longer than the width of the slot 14, but shorter than an inner width of the mounting rail 12.
  • a longer diagonal of the screw head 16 is slightly longer than the inner width of the mounting rail 12th ,
  • a perforated disc 20 is pushed as a clamping element on a screw shaft 22 of the hammer head screw 10.
  • the perforated disc 20 is provided with four short slots 24 which are mounted in pairs with some distance from each other and the other two slots 24 opposite to the circumference of the perforated disc 20.
  • Through these slots 24 through a rubber ring 26 is tensioned as a tension spring element on the screw head 16.
  • the rubber ring 26 pulls the perforated disc 20 against the screw head 16.
  • a diameter of the perforated disc 20 is greater than the width of the slot 14 of the mounting rail 12th
  • a nut 28 is screwed at a distance from the perforated disc 20 on the screw shaft 22. To protect against unintentional rotation of the nut 28, this is secured with a not visible in the drawing drops locking lacquer in a conventional manner. Tightening the nut 28 is not hindered.
  • a conduit can be attached to the screw head 16 facing away from the free end of the screw shaft a pipe clamp (not shown).
  • the attachment of the hammer head screw 10 according to the invention on the mounting rail 12 is done as follows:
  • the hammer head screw 10 is aligned with its screw head 16 in the longitudinal direction of the slot 14 through the slot 14 inserted into the interior of the mounting rail 12.
  • the perforated disc 20 comes to an outside of the mounting rail 12 to the plant, it is lifted against the force of the rubber ring 26 from the screw head 16.
  • the hammer head screw 10 is locked in the mounting rail 12, ends of the screw head 16 engage behind the rectangular tube profile of the mounting rail 12 laterally of the slot 14.
  • the rubber ring 26 presses on the outside of the mounting rail 12 adjacent hole plate 20, the hammer head screw 10 in the axial direction of the mounting rail 12 and thereby the screw head 16 in abutment with the inside of the mounting rail 12.
  • the hammer head bolt 10 is on clamped this way with little force on the mounting rail 12 and thereby secured against accidental falling out or moving.
  • the hammer head screw 10 can be displaced in the longitudinal direction of the fastening rail 12 against the clamping force applied by the rubber ring 26.
  • the clamping force of the rubber ring 26 is sufficient to adhere the screw at vertically mounted mounting rail 12 to this and to secure a rectangular, ie horizontal projection of the hammer head screw 10.
  • the hammer head screw 10 is tightened by tightening the nut 28 with the mounting rail 12.
  • the parallelogram-shaped screw head 16 the longer diagonal is longer than an inner width of the fastening rail 12, limits the angle of rotation of the hammer head screw 10, since the longer diagonal located corners of the screw head 16 abut the inner sides of the mounting rail 12, when the screw head 16 approximately transversely to Fixing rail 12 has been rotated standing.
  • the rubber ring 26 After tightening the nut 28, the rubber ring 26 has no function, so that aging of the rubber ring 26 does not affect the function of the hammer head screw 10.
  • the perforated disc 20 of the hammer head screw 10 according to the invention shown in Figure 3 has four indentations 30 of its peripheral edge, which serve for attaching the screw head 16 spanning rubber ring 26.
  • FIG. 4 shows an embodiment of the hammer head screw 10, in which the underside of the screw head 16 has a shoulder 48 extending transversely to its longitudinal direction.
  • the width of the shoulder 48 is slightly less than the inside width of the slot 14 of the mounting rail 12, so that after insertion of the hammer head screw 10 into the mounting rail 12 and a rotation of the screw head 16 by 90 ° of the shoulder 48 into the slot 14 snaps. This results in an anti-rotation device for the hammer head screw 10, both when untwisting as well as releasing the nut 28 becomes effective.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Connection Of Plates (AREA)
  • Clamps And Clips (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Dowels (AREA)
  • Scissors And Nippers (AREA)
  • Percussive Tools And Related Accessories (AREA)

Abstract

The ceiling is fixed in place using a hammer head screw (10) which has a tension spring (26) that abuts the screw head (16) and a clamp (20) pushed on to the screw shank (22) and which pulls the clamp towards the screw head. The tension spring is an elastic ring or an elastic band with a fastening for mounting on the clamp of the screw head. The screw may alternatively have a compression spring to press the clamp towards the screw head. This can be a spring washer.

Description

Die Erfindung betrifft ein Hammerkopfschraube für eine Deckenbefestigung mit den Merkmalen des Oberbegriffs des Anspruchs 1 (US 3 483 910 A). Mit Hammerkopf ist ein Schraubenkopf gemeint, der unterschiedliche Abmessungen in Längs- und Querrichtung aufweist, also beispielsweise ein rechteckiger, rauten- oder parallelogrammförmiger Schraubenkopf. Denkbar wären beispielsweise auch ein ovaler oder elliptischer Schraubenkopf.The invention relates to a hammer head screw for ceiling mounting with the features of the preamble of claim 1 (US 3 483 910 A). By hammer head is meant a screw head having different dimensions in the longitudinal and transverse directions, so for example a rectangular, rhomboid or parallelogram-shaped screw head. For example, an oval or elliptical screw head would also be conceivable.

Eine andere Hammerkopfschraube ist von der Firma BIS-Walraven bekannt. Die bekannte Hammerkopfschraube ist zum formschlüssigen Einsetzen in eine einen Längsschlitz aufweisende Kastenprofil-Befestigungsschiene vorgesehen. Der Schraubenkopf läßt sich in Richtung des Schlitzes ausgerichtet durch diesen hindurch in die Befestigungsschiene einsetzen und durch Drehung um ca. 90° in Eingriff mit vom Kastenprofil seitlich des Schlitzes gebildeten Hinterschneidungen bringen. Ein unter dem Schraubenkopf an einem Schraubenschaft angebrachtes Kunststoff-Federelement mit halbringförmigen Federflügeln stützt sich seitlich des Schlitzes an einer Außenseite der Befestigungsschiene ab. Das Federelement drückt die Hammerkopfschraube in axialer Richtung von der Befestiungsschiene ab und dadurch den Schraubenkopf in Anlage an die Hinterschneidungen der Befestigungsschiene. Dadurch ist die Hammerkopfschraube vorläufig an der Befestigungsschiene festgeklemmt. Es wird vermieden, daß die Hammerkopfschraube nach dem Einsetzen in die Befestigungsschiene unbeabsichtigt wieder herausfällt oder sich unbeabsichtigt in Längsrichtung der Befestigungsschiene verschiebt. Ein beabsichtigtes Verschieben durch Überwindung der Klemmkraft des Federelements zur Positionierung der Hammerkopfschraube ist möglich. Des weiteren stellt das Federelement beispielsweise bei senkrecht an einer Wand angebrachten Befestigungsschiene ein rechtwinkliges Abstehen der Hammerkopfschraube sicher.Another hammerhead bolt is known from BIS-Walraven. The known hammer head screw is provided for positive insertion into a longitudinal slot having box profile mounting rail. The screw head can be aligned in the direction of the slot through this insert into the mounting rail and bring by rotation by about 90 ° into engagement with the box profile formed laterally of the slot undercuts. An attached under the screw head to a screw shaft plastic spring element with semi-annular spring wings is supported laterally of the slot on an outer side of the mounting rail. The spring element presses the hammer head screw in the axial direction from the fastening rail and thereby the screw head in contact with the undercuts of the mounting rail. As a result, the hammer head bolt is provisionally clamped to the mounting rail. It is avoided that the hammer head screw unintentionally falls out after insertion into the mounting rail again or shifts unintentionally in the longitudinal direction of the mounting rail. An intentional displacement by overcoming the clamping force of the spring element for positioning the hammer head screw is possible. Furthermore, the spring element ensures, for example, when perpendicularly mounted on a wall mounting rail a right angle projection of the hammer head screw.

Zur endgültigen Befestigung wird ein auf den Schraubenschaft aufgeschobenes Klemmelement in Form einer Lochscheibe mittels einer Mutter gegen die Außenseite der Befestigungsschiene gespannt und dadurch die Hammerkopfschraube an der Befestigungsschiene unbeweglich fixiert.For final attachment pushed onto the screw shank clamping element in the form of a perforated disc is clamped by a nut against the outside of the mounting rail and thereby fixed the hammer head screw immovably to the mounting rail.

Die bekannte Hammerkopfschraube hat den Nachteil, daß ihr Federelement ein geometrisch kompliziert geformtes Kunststoff-Spritzgußteil ist, dessen Herstellung und Anbringung an der Hammerkopfschraube aufwendig und teuer ist.The known hammer head screw has the disadvantage that its spring element is a geometrically complicated molded plastic injection-molded part, the production and attachment to the hammer head screw is complicated and expensive.

Der Erfindung liegt die Aufgabe zugrunde, eine Hammerkopfschraube der eingangs genannten Art so auszubilden, daß sie einfacher und preiswert herstellbar ist.The invention has the object of providing a hammer head screw of the type mentioned in such a way that it is easier and inexpensive to produce.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst. Die erfindungsgemäße Hammerkopfschraube weist ein gummielastisches Zugfederelement auf, das das Klemmelement an den Schraubenkopf heranzieht. Die vorläufige Klemmung der Hammerkopfschraube an der Befestigungsschiene erfolgt mit dem Klemmelement, das vom Zugfederelement an den Schraubenkopf gezogen wird und von außen gegen die Befestigungsschiene drückt. Ein Gummiring steht als Massenartikel sehr preisgünstig zur Verfügung. Weiterer Vorteil ist, daß sich das Zugfederelement sehr einfach den Schraubenkopf überspannend am Klemmelement anbringen läßt, was das Zusammensetzen der Einzelteile der erfindungsgemäßen Hammerkopfschraube erleichtert.This object is achieved by the features of claim 1. The hammer head screw according to the invention has a rubber-elastic tension spring element, which uses the clamping element to the screw head. The provisional clamping of the hammer head screw on the mounting rail is done with the clamping element, which is pulled by the tension spring element to the screw head and presses against the mounting rail from the outside. A rubber ring is available as a mass-produced very reasonably priced. Another advantage is that the tension spring element can easily install the screw head spanning the clamping element, which facilitates the assembly of the individual parts of the hammer head screw according to the invention.

Das Klemmelement ist eine Lochscheibe. Diese kann Ausnehmungen, beispielsweise kurze Schlitze oder zur Scheibenmitte gerichtete Einbuchtungen ihres Umfangsrandes für den Eingriff des Zugfederelements aufweisen. Auch kann das elastische Band bei Ausgestaltungen der Erfindung Schlitze, Augen, oder tropfenförmige Verdickungen zum Anbringen am Klemmelement oder am Schraubenkopf aufweisen.The clamping element is a perforated disc. This may have recesses, for example, short slots or recesses directed towards the center of the disk of its peripheral edge for engagement of the tension spring element. Also, the elastic band in embodiments of the invention, slits, eyes, or teardrop-shaped thickenings for attachment to the clamping element or the screw head have.

In bevorzugter Ausgestaltung weist die erfindungsgemäße Hammerkopfschraube eine mit der Befestigungsschiene zusammenwirkende Einrichtung zur Drehwinkelbegrenzung auf. Die Drehwinkelbegrenzung wird bei Ausgestaltungen der Erfindung dadurch bewirkt, daß der Schraubenkopf länger als eine Innenbreite der Befestigungsschiene ist. Die Hammerkopfschraube läßt sich nach Einführen ihres Schraubenkopfes nur soweit verdrehen, bis ihr Schraubenkopf an Innenseiten der Wände der Befestigungsschiene anstößt. In dieser Stellung hintergreift er die Hinterschneidungen der Befestigungsschiene seitliche ihres Schlitzes. Dadurch wird eine vorgesehene Winkelausrichtung des Schraubenkopfes der Hammerkopfschraube in Bezug auf die Befestigungsschiene und damit ein ausreichend großer Hintergriff der erfindungsgemäßen Hammerkopfschraube sichergestellt. Zur Drehwinkelbegrenzung geeignete Schraubenkopfformen sind Parallelogramme oder Rauten oder auch Rechtecke, bei denen zwei einander diametral gegenüberliegende Kanten abgeschrägt oder abgerundet sind, so daß die Diagonale des Schraubenkopfes in Richtung der abgeschrägten oder gerundeten Ecken kürzer als die Innenbreite der Befestigungsschiene ist. Auch ist eine Drehwinkelbegrenzung durch eine entsprechende Querschnittsgestaltung des Schraubenschaftes unterhalb des Schraubenkopfes, der mit dem Schlitz der Befestigungsschiene zusammenwirkt möglich.In a preferred embodiment, the hammer head screw according to the invention has a cooperating with the mounting rail device for limiting the rotation angle. The rotation angle limitation is effected in embodiments of the invention in that the screw head is longer than an inner width of the mounting rail. The hammer head screw can be turned only after insertion of its screw head until its screw head abuts against inner sides of the walls of the mounting rail. In this position, he engages behind the undercuts of the mounting rail side of her slot. As a result, an intended angular orientation of the screw head of the hammer head screw with respect to the fastening rail and thus a sufficiently large rear grip of the hammer head screw according to the invention is ensured. For the rotation angle limiting suitable screw head shapes are parallelograms or diamonds or rectangles in which two diametrically opposite edges are beveled or rounded, so that the diagonal of the screw head in the direction of the beveled or rounded corners shorter than the inner width of the mounting rail. Also, a rotation angle limit by a corresponding cross-sectional configuration of the screw shaft below the screw head, which cooperates with the slot of the mounting rail is possible.

In einer weiteren Ausgestaltung kann der Schraubenkopf an seiner Unterseite einen quer zu seiner Längsrichtung verlaufenden Absatz aufweisen, dessen Breite geringfügig kleiner ist als die lichte Weite des Schlitzes der Befestigungsschiene. Nach dem Einsetzen der Hammerkopfschraube in die Befestigungsschiene und Verdrehen des Schraubenkopfes um 90° rastet der an der Unterseite des Schraubenkopfes angeordnete Absatz in den Schlitz der Befestigungsschiene ein. Damit wird der Schraubenkopf in dieser Position gegen Verdrehen in beiden Richtungen fixiert, sodaß ein Anziehen und Lösen der Mutter auch bei stärkerer Gewindereibung ohne Schwierigkeiten möglich ist. Nach dem Lösen der Mutter wird der Schraubenkopf soweit abgehoben, daß der Absatz aus dem Schlitz ausrastet.In a further embodiment, the screw head on its underside have a transverse to its longitudinal direction extending paragraph whose width is slightly smaller than the inside width of the slot of the mounting rail. After inserting the hammer head screw into the mounting rail and turning the screw head by 90 °, the arranged on the underside of the screw head paragraph snaps into the slot of the mounting rail. Thus, the screw head is fixed in this position against rotation in both directions, so that a tightening and loosening of the nut is possible even with heavy thread friction without difficulty. After loosening the nut of the screw head is lifted so far that the paragraph disengages from the slot.

Die Erfindung wird nachfolgend anhand eines in der Zeichnung dargestellter Ausführungsbeispiele näher erläutert. Es zeigen:

Figur 1
eine Befestigungsschiene für eine Hammerkopfschraube gemäß der Erfindung;
Figur 2
eine erfindungsgemäße Hammerkopfschraube in perspektivischer Darstellung;
Figur 3
eine Draufsicht auf den Schraubenkopf einer abgewandelten Ausführungsform der Hammerkopfschraube aus Figur 2;
Figur 4
eine weitere Ausführungsform des Schraubenkopfes.
The invention will be explained in more detail with reference to an illustrated in the drawings embodiments. Show it:
FIG. 1
a mounting rail for a hammer head screw according to the invention;
FIG. 2
a hammer head screw according to the invention in a perspective view;
FIG. 3
a plan view of the screw head of a modified embodiment of the hammer head screw of Figure 2;
FIG. 4
a further embodiment of the screw head.

Die erfindungsgemäße, in Figur 2 dargestellte Hammerkopfschraube 10 ist zum Befestigen beispielsweise an einer Befestigungsschiene 12, wie sie in Figur 1 dargestellt ist, vorgesehen. Die Befestigungsschiene 12 hat ein Rechteckrohrprofil, sie weist einen in Längsrichtung durchgehenden Schlitz 14 in einer ihrer breiten Seiten auf. Die Befestigungsschiene 12 wird an einer Decke oder einer Wand eines Gebäudes (nicht dargestellt) befestigt. Mittels der nachfolgend beschriebenen Hammerkopfschraube 10 lassen sich beispielsweise Rohrleitungen oder Luftkanäle für Sanitär-, Heizungs-, Lüftungs- oder Klimaanlagen an der Befestigungsschiene 12 anbringen.The hammerhead screw 10 according to the invention, shown in FIG. 2, is provided for fastening, for example, to an attachment rail 12, as shown in FIG. The mounting rail 12 has a rectangular tube profile, it has a longitudinally continuous slot 14 in one of its broad sides. The mounting rail 12 is attached to a ceiling or wall of a building (not shown). By means of the hammer head screw 10 described below, for example, pipes or air ducts for sanitary, heating, ventilation or air conditioning systems can be attached to the mounting rail 12.

Der Schraubenkopf 16 der in Figur 2 dargestellten Hammerkopfschraube 10 hat die Form eines Parallelogramms mit unterschiedlichen Seitenlängen. Anstelle zweier Ecken weist der Schraubenkopf 16 auf seiner kürzeren Diagonalen Rundungen 18 auf (vgl. Figur 3). Der Schraubenkopf 16 ist etwas schmaler als der Schlitz 14 der Befestigungsschiene 12, seine kürzere Diagonale ist länger als die Breite des Schlitzes 14, jedoch kürzer als eine Innenbreite der Befestigungsschiene 12. Eine längere Diagonale des Schraubenkopfes 16 ist etwas länger als die Innenbreite der Befestigungsschiene 12.The screw head 16 of the hammer head screw 10 shown in Figure 2 has the shape of a parallelogram with different side lengths. Instead of two corners, the screw head 16 on its shorter diagonal curves 18 (see Figure 3). The screw head 16 is slightly narrower than the slot 14 of the mounting rail 12, its shorter diagonal is longer than the width of the slot 14, but shorter than an inner width of the mounting rail 12. A longer diagonal of the screw head 16 is slightly longer than the inner width of the mounting rail 12th ,

Unterhalb des Schraubenkopfes 16 ist eine Lochscheibe 20 als Klemmelement auf einen Schraubenschaft 22 der Hammerkopfschraube 10 aufgeschoben. Die Lochscheibe 20 ist mit vier kurzen Schlitzen 24 versehen, die paarweise mit etwas Abstand voneinander und den beiden anderen Schlitzen 24 gegenüberliegend am Umfang der Lochscheibe 20 angebracht sind. Durch diese Schlitze 24 hindurch ist ein Gummiring 26 als Zugfederelement über den Schraubenkopf 16 gespannt. Der Gummiring 26 zieht die Lochscheibe 20 gegen den Schraubenkopf 16. Ein Durchmesser der Lochscheibe 20 ist größer als die Breite des Schlitzes 14 der Befestigungsschiene 12.Below the screw head 16, a perforated disc 20 is pushed as a clamping element on a screw shaft 22 of the hammer head screw 10. The perforated disc 20 is provided with four short slots 24 which are mounted in pairs with some distance from each other and the other two slots 24 opposite to the circumference of the perforated disc 20. Through these slots 24 through a rubber ring 26 is tensioned as a tension spring element on the screw head 16. The rubber ring 26 pulls the perforated disc 20 against the screw head 16. A diameter of the perforated disc 20 is greater than the width of the slot 14 of the mounting rail 12th

Unterhalb der Lochscheibe 20 ist eine Mutter 28 mit Abstand von der Lochscheibe 20 auf den Schraubenschaft 22 aufgeschraubt. Zur Sicherung gegen unbeabsichtigtes Verdrehen der Mutter 28 ist diese mit einem in der Zeichnung nicht sichtbaren Tropfen Sicherungslack in an sich bekannter Weise gesichert. Ein Festziehen der Mutter 28 wird dadurch nicht behindert.Below the perforated disc 20, a nut 28 is screwed at a distance from the perforated disc 20 on the screw shaft 22. To protect against unintentional rotation of the nut 28, this is secured with a not visible in the drawing drops locking lacquer in a conventional manner. Tightening the nut 28 is not hindered.

Zur Befestigung eines Leitungsrohres kann an dem dem Schraubenkopf 16 abgewandten, freien Ende des Schraubenschaftes eine Rohrschelle angebracht sein (nicht dargestellt).To attach a conduit can be attached to the screw head 16 facing away from the free end of the screw shaft a pipe clamp (not shown).

Die Befestigung der erfindungsgemäßen Hammerkopfschraube 10 an der Befestigungsschiene 12 geschieht folgendermaßen: Die Hammerkopfschraube 10 wird mit ihrem Schraubenkopf 16 in Längsrichtung des Schlitzes 14 ausgerichtet durch den Schlitz 14 ins Innere der Befestigungsschiene 12 eingeführt. Dabei kommt die Lochscheibe 20 an einer Außenseite der Befestigungsschiene 12 zur Anlage, sie wird gegen die Kraft des Gummirings 26 vom Schraubenkopf 16 abgehoben. Durch eine Rechtsdrehung um ca. 90° wird die Hammerkopfschraube 10 in der Befestigungsschiene 12 verriegelt, Enden des Schraubenkopfes 16 hintergreifen das Rechteckrohrprofil der Befestigungsschiene 12 seitlich des Schlitzes 14. Der Gummiring 26 drückt über die außen an der Befestigungsschiene 12 anliegende Lochscheibe 20 die Hammerkopfschraube 10 in axialer Richtung von der Befestigungsschiene 12 ab und dadurch den Schraubenkopf 16 in Anlage an die Innenseite der Befestigungsschiene 12. Die Hammerkopfschraube 10 ist auf diese Weise mit geringer Kraft an der Befestigungsschiene 12 festgeklemmt und dadurch gegen unbeabsichtigtes Herausfallen oder Verschieben gesichert. Zur Positionierung läßt sich die Hammerkopfschraube 10 in Längsrichtung der Befestigungsschiene 12 gegen die vom Gummiring 26 aufgebrachte Klemmkraft verschieben. Die Klemmkraft des Gummirings 26 reicht aus, die Schraube bei senkrecht montierter Befestigungsschiene 12 an dieser zu haften und an ein rechtwinkliges, also horizontales Abstehen der Hammerkopfschraube 10 zu sichern. Zur endgültigen Befestigung wird die Hammerkopfschraube 10 durch Festziehen der Mutter 28 mit der Befestigungsschiene 12 verspannt.The attachment of the hammer head screw 10 according to the invention on the mounting rail 12 is done as follows: The hammer head screw 10 is aligned with its screw head 16 in the longitudinal direction of the slot 14 through the slot 14 inserted into the interior of the mounting rail 12. In this case, the perforated disc 20 comes to an outside of the mounting rail 12 to the plant, it is lifted against the force of the rubber ring 26 from the screw head 16. By a clockwise rotation of about 90 °, the hammer head screw 10 is locked in the mounting rail 12, ends of the screw head 16 engage behind the rectangular tube profile of the mounting rail 12 laterally of the slot 14. The rubber ring 26 presses on the outside of the mounting rail 12 adjacent hole plate 20, the hammer head screw 10 in the axial direction of the mounting rail 12 and thereby the screw head 16 in abutment with the inside of the mounting rail 12. The hammer head bolt 10 is on clamped this way with little force on the mounting rail 12 and thereby secured against accidental falling out or moving. For positioning, the hammer head screw 10 can be displaced in the longitudinal direction of the fastening rail 12 against the clamping force applied by the rubber ring 26. The clamping force of the rubber ring 26 is sufficient to adhere the screw at vertically mounted mounting rail 12 to this and to secure a rectangular, ie horizontal projection of the hammer head screw 10. For final attachment, the hammer head screw 10 is tightened by tightening the nut 28 with the mounting rail 12.

Der parallelogrammförmige Schraubenkopf 16, dessen längere Diagonale länger als eine Innenbreite der Befestiungsschiene 12 ist, begrenzt den Drehwinkel der Hammerkopfschraube 10, da die auf der längeren Diagonalen befindlichen Ecken des Schraubenkopfes 16 an Innenseiten der Befestigungsschiene 12 anstoßen, wenn der Schraubenkopf 16 in etwa quer zur Befestigungsschiene 12 stehend verdreht worden ist. Nach dem Festziehen der Mutter 28 hat der Gummiring 26 keine Funktion mehr, so daß eine Alterung des Gummirings 26 die Funktion der Hammerkopfschraube 10 nicht beeinträchtigt.The parallelogram-shaped screw head 16, the longer diagonal is longer than an inner width of the fastening rail 12, limits the angle of rotation of the hammer head screw 10, since the longer diagonal located corners of the screw head 16 abut the inner sides of the mounting rail 12, when the screw head 16 approximately transversely to Fixing rail 12 has been rotated standing. After tightening the nut 28, the rubber ring 26 has no function, so that aging of the rubber ring 26 does not affect the function of the hammer head screw 10.

Zur Vermeidung von Wiederholungen werden für Figuren 3 und 4 für gleiche Bauteile die selben Bezugszahlen wie in Figur 2 verwendet. Es wird insoweit auf die vorstehenden Ausführungen verwiesen.To avoid repetition, the same reference numerals as in FIG. 2 are used for the same components for FIGS. 3 and 4. In this respect, reference is made to the above statements.

Die Lochscheibe 20 der in Figur 3 dargestellten, erfindungsgemäßen Hammerkopfschraube 10 weist vier Einbuchtungen 30 ihres Umfangsrandes auf, die zum Anbringen des den Schraubenkopf 16 überspannenden Gummirings 26 dienen.The perforated disc 20 of the hammer head screw 10 according to the invention shown in Figure 3 has four indentations 30 of its peripheral edge, which serve for attaching the screw head 16 spanning rubber ring 26.

Figur 4 zeigt eine Ausführungsform der Hammerkopfschraube 10, bei der die Unterseite des Schraubenkopfes 16 einen quer zu seiner Längsrichtung verlaufenden Absatz 48 aufweist. Die Breite des Absatzes 48 ist etwas geringer als die lichte Weite des Schlitzes 14 der Befestigungsschiene 12, sodaß nach dem Einsetzen der Hammerkopfschraube 10 in die Befestigungsschiene 12 und einer Verdrehung des Schraubenkopfes 16 um 90° der Absatz 48 in den Schlitz 14 einrastet. Damit ergibt sich eine Verdrehsicherung für die Hammerkopfschraube 10, die sowohl beim Aufdrehen als auch Lösen der Mutter 28 wirksam wird.FIG. 4 shows an embodiment of the hammer head screw 10, in which the underside of the screw head 16 has a shoulder 48 extending transversely to its longitudinal direction. The width of the shoulder 48 is slightly less than the inside width of the slot 14 of the mounting rail 12, so that after insertion of the hammer head screw 10 into the mounting rail 12 and a rotation of the screw head 16 by 90 ° of the shoulder 48 into the slot 14 snaps. This results in an anti-rotation device for the hammer head screw 10, both when untwisting as well as releasing the nut 28 becomes effective.

Claims (4)

  1. Hammerhead bolt for a ceiling fastening, having a clamping element pushed onto a bolt shank and having a tension spring element which acts on a bolt head and on the clamping element, the clamping element (20) being a washer which, when the hammerhead bolt (10) has been inserted into a fastening rail (12), can lie against an outer face of the fastening rail (12), characterized in that the tension spring element (26) pulls the clamping element (20) into contact with the bolt head (16), and in that the tension spring element (26) is a rubber ring.
  2. Hammerhead bolt according to claim 1, characterized in that the washer (20) has recesses (24, 30) for engagement of the tension spring element (26).
  3. Hammerhead bolt according to claim 1, characterized in that the hammerhead bolt (10) has a means for limiting the angle of rotation.
  4. Hammerhead bolt according to claim 1, characterized in that the underside of the bolt head (16) has a projection (48) running across its longitudinal direction, the width of which is slightly less than the clear width of the slot (14) of the fastening rail (12).
EP97121929A 1997-02-20 1997-12-12 Hammer head screw for fastening to the ceiling Expired - Lifetime EP0860617B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29703027U DE29703027U1 (en) 1997-02-20 1997-02-20 Hammer head screw for ceiling mounting
DE29703027U 1997-02-20

Publications (3)

Publication Number Publication Date
EP0860617A1 EP0860617A1 (en) 1998-08-26
EP0860617B1 EP0860617B1 (en) 2000-05-03
EP0860617B2 true EP0860617B2 (en) 2006-12-27

Family

ID=8036272

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97121929A Expired - Lifetime EP0860617B2 (en) 1997-02-20 1997-12-12 Hammer head screw for fastening to the ceiling

Country Status (10)

Country Link
EP (1) EP0860617B2 (en)
AT (1) ATE192551T1 (en)
CZ (1) CZ292339B6 (en)
DE (2) DE29703027U1 (en)
DK (1) DK0860617T4 (en)
ES (1) ES2147419T5 (en)
GR (1) GR3033225T3 (en)
HU (1) HU218885B (en)
PL (1) PL190702B1 (en)
PT (1) PT860617E (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK1026415T3 (en) * 1999-02-03 2006-08-21 Mefa Befestigungs Und Montages attachment device
DE19913009A1 (en) * 1999-03-23 2000-10-12 Wolfgang Halpaus Device for attaching objects of any kind to ceilings or walls
DE10046198A1 (en) * 2000-09-19 2002-03-28 Fischer Artur Werke Gmbh Hammer head element for fastening in a mounting rail with a slot
DE202009016498U1 (en) 2008-12-05 2010-04-01 Schulte, Helmut Hammer head screw for mounting rails
DE202024000380U1 (en) 2024-02-28 2024-04-05 Bernhard Ranftl Assembly aid for hammer head screws

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483910A (en) † 1968-04-01 1969-12-16 Youngstown Sheet And Tube Co Attachment devices including extend working means,for apertured structural members
US4146074A (en) † 1977-10-07 1979-03-27 B-Line Systems, Inc. Fastener
US4830537A (en) † 1988-04-19 1989-05-16 Scoralin Inc. Flexible pipe or cable laying apparatus
DE9108948U1 (en) † 1991-07-20 1991-09-19 Halpaus, Wolfgang, 6806 Viernheim Two-piece pipe clamp
DE29513990U1 (en) † 1994-08-30 1995-10-26 J. Van Walraven B.V., Mijdrecht Arrangement for fastening a pipeline to a wall
DE4432996A1 (en) † 1994-09-16 1996-03-21 Hilti Ag Fastening nut for profile rails

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Publication number Priority date Publication date Assignee Title
US3770261A (en) * 1970-10-05 1973-11-06 R Anderson T slot bolt
DE3437491A1 (en) * 1984-10-12 1986-04-17 Müller, Franz, 6200 Wiesbaden Method of producing a hammer-head or hook-head screw
DE8715256U1 (en) * 1987-11-06 1988-03-03 Maro Befestigungs- und Verbindungstechnik GmbH, 7257 Ditzingen Mounting rail unit
DE3811974A1 (en) * 1988-04-11 1989-10-19 Franz Mueller SLIDE NUT OR SCREW FOR USE IN C-RAILS
CH680464A5 (en) * 1990-02-13 1992-08-31 Lanz Oensingen Ag
DE4032865C2 (en) * 1990-10-12 1993-10-07 Krone Ag Screw connection
FR2719093B1 (en) * 1994-04-20 1996-06-07 Rapid Sa Device for fixing a part comprising a head on a U-shaped profile.
NL1001709C2 (en) * 1995-11-21 1997-05-23 Walraven J Van Bv Device for attaching an object, more particularly of a pipe, to a wall.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3483910A (en) † 1968-04-01 1969-12-16 Youngstown Sheet And Tube Co Attachment devices including extend working means,for apertured structural members
US4146074A (en) † 1977-10-07 1979-03-27 B-Line Systems, Inc. Fastener
US4830537A (en) † 1988-04-19 1989-05-16 Scoralin Inc. Flexible pipe or cable laying apparatus
DE9108948U1 (en) † 1991-07-20 1991-09-19 Halpaus, Wolfgang, 6806 Viernheim Two-piece pipe clamp
DE29513990U1 (en) † 1994-08-30 1995-10-26 J. Van Walraven B.V., Mijdrecht Arrangement for fastening a pipeline to a wall
DE4432996A1 (en) † 1994-09-16 1996-03-21 Hilti Ag Fastening nut for profile rails

Also Published As

Publication number Publication date
GR3033225T3 (en) 2000-08-31
PL190702B1 (en) 2005-12-30
ATE192551T1 (en) 2000-05-15
CZ51398A3 (en) 1998-09-16
HUP9800023A2 (en) 1998-08-28
DE59701570D1 (en) 2000-06-08
DK0860617T3 (en) 2000-09-25
EP0860617B1 (en) 2000-05-03
ES2147419T5 (en) 2007-06-16
HU9800023D0 (en) 1998-03-30
PT860617E (en) 2000-10-31
HU218885B (en) 2000-12-28
EP0860617A1 (en) 1998-08-26
CZ292339B6 (en) 2003-09-17
PL324685A1 (en) 1998-08-31
DE29703027U1 (en) 1998-06-18
ES2147419T3 (en) 2000-09-01
HUP9800023A3 (en) 2000-03-28
DK0860617T4 (en) 2007-04-10

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