EP1518031B1 - Panel, in particular parquet floorboard or laminate floorboard - Google Patents

Panel, in particular parquet floorboard or laminate floorboard Download PDF

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Publication number
EP1518031B1
EP1518031B1 EP03735650A EP03735650A EP1518031B1 EP 1518031 B1 EP1518031 B1 EP 1518031B1 EP 03735650 A EP03735650 A EP 03735650A EP 03735650 A EP03735650 A EP 03735650A EP 1518031 B1 EP1518031 B1 EP 1518031B1
Authority
EP
European Patent Office
Prior art keywords
flank
tongue
groove
panel element
section
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03735650A
Other languages
German (de)
French (fr)
Other versions
EP1518031A1 (en
Inventor
Wilfried Weitzer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Weitzer Parkett GmbH and Co KG
Original Assignee
Weitzer Parkett GmbH and Co KG
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Filing date
Publication date
Application filed by Weitzer Parkett GmbH and Co KG filed Critical Weitzer Parkett GmbH and Co KG
Publication of EP1518031A1 publication Critical patent/EP1518031A1/en
Application granted granted Critical
Publication of EP1518031B1 publication Critical patent/EP1518031B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/04—Flooring or floor layers composed of a number of similar elements only of wood or with a top layer of wood, e.g. with wooden or metal connecting members
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2201/00—Joining sheets or plates or panels
    • E04F2201/01—Joining sheets, plates or panels with edges in abutting relationship
    • E04F2201/0138—Joining sheets, plates or panels with edges in abutting relationship by moving the sheets, plates or panels perpendicular to the main plane
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2201/00—Joining sheets or plates or panels
    • E04F2201/02—Non-undercut connections, e.g. tongue and groove connections
    • E04F2201/023—Non-undercut connections, e.g. tongue and groove connections with a continuous tongue or groove
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2201/00—Joining sheets or plates or panels
    • E04F2201/02—Non-undercut connections, e.g. tongue and groove connections
    • E04F2201/026—Non-undercut connections, e.g. tongue and groove connections with rabbets, e.g. being stepped
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/19—Sheets or webs edge spliced or joined
    • Y10T428/192—Sheets or webs coplanar
    • Y10T428/195—Beveled, stepped, or skived in thickness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/31504—Composite [nonstructural laminate]
    • Y10T428/31826—Of natural rubber

Definitions

  • the invention relates to a panel element having a payload side, a counterpart opposite the payload side, a first side having a spring, a second side opposite the first side having a groove of the same design as the spring, wherein the spring has a connecting element which is substantially perpendicular to the Useful side extends and whose cross-section has a first edge and a second flank opposite the first flank, wherein the cross section of the connecting element has a center line extending perpendicular to the useful side.
  • the tongue and groove connection is produced by a movement perpendicular to the useful side. A shift of the panel elements parallel to the laying plane is not required.
  • a panel element in which the spring on the end face of the panel element has a hook element with an approximately circular cross-section and the groove has a diametrically opposed recess.
  • a disadvantage of the tongue and groove connection according to the DE 100 01 076 C1 is that a high force is required for connecting the spring with the groove, which is why it can easily occur in the laying of damage to the panel element, in particular the Nutzseite and / or the edges of the recess. If the edges of the recess are damaged, then the tongue and groove connection often has only a slight hold, whereby an undesired release of the tongue and groove connection can occur when the panel element is stressed.
  • Another disadvantage is that with repeated loosening and reassembly of the tongue and groove joint due to the deformations of the groove and / or the spring transferable forces of the tongue and groove connection can be greatly reduced.
  • the FR 2 278 876 A discloses a panel member with a spring having a hook member in the shape of a dovetail, wherein a flank of the dovetail is perpendicular to the useful side.
  • the groove also has a hook element in the shape of a dovetail, wherein a flank of the dovetail is perpendicular to the counter-pull.
  • a disadvantage of the panel element of FR 2 278 876 A is that only at one side of the hook element in the tongue and groove connection, a contact point is formed, so that the tongue and groove connection is not free of play due to manufacturing tolerances and against a climate-related dimensional change of the spring is given only little resistance.
  • WO 01/02670 A1 goes out a panel element with a spring, which has the shape of a dovetail, wherein a flank of the dovetail is perpendicular to the decorative side.
  • the groove also has the shape of a dovetail, with one flank of the dovetail being perpendicular to the counter-pull.
  • the panel element according to the WO 01/02670 is also disadvantageous that only at one side of the spring or the groove in the tongue and groove connection a contact point is formed, so that the tongue and groove connection is not free of play due to manufacturing tolerances.
  • the groove-and-tongue connection has in particular compared to a climate-induced dimensional change of the spring and / or the groove only a small resistance, since the spring can rotate relative to the groove.
  • the DE-U-202 03 311 discloses a panel member having a payload side, a payload side opposing counter, a second side opposite the first side with a tongue of the same configuration, the spring extending substantially perpendicular to the payload side and having two opposing flanks, wherein - in the direction of seen the useful side - in a first portion of the spring, the inclination of the first edge and the second edge respectively facing away from the center line of the spring cross-section and in a second portion, the inclination of the first edge facing away from the center line and the inclination of the second edge to the center line, wherein the distance is reduced perpendicular to the center line between the first and the second edge.
  • a rib is formed, which engages in the vertical connection between two adjacent panel elements, in a retaining channel of the adjacent panel member.
  • the object of the invention is to provide a panel element of the type mentioned, in which the known disadvantages are avoided, which allows a play-free tongue and groove connection, has a high resistance to climate-induced dimensional change of the spring and in which the production of the groove Spring connection required forces are as small as possible.
  • this is achieved in that - seen in the direction of the payload side (visible in the installed state top) - in a first portion of the connecting element, the inclination of the first edge, which is arranged on the side facing away from the panel element of the connecting element, and the second Edge facing away from the center line to the outside and in a second section, the inclination of the first edge facing away from the center line to the outside and the inclination of the second flank to Center line, wherein the distance is reduced perpendicular to the center line between the first edge and the second edge.
  • the latching resistance for the first edge and the second edge at different times has its maximum, whereby the required force and the risk of damage to the panel element according to the invention is reduced. Furthermore, because of this splitting of the detent resistors, the inclination on the two flanks of the connecting element in the first section points outward from the center line, so that a dovetail connection is provided in which at least one contact point is formed on the two flanks, whereby a good hold of the groove Spring connection against forces and moments, which act substantially perpendicular to the longitudinal axis of the spring is achieved. Due to the splitting of the maximum of the latching resistances, a greater inclination on the two flanks can furthermore be selected, and the risk of damage to the panel element due to the force required to produce the tongue and groove connection can be kept low.
  • the inclination of the first flank and the inclination of the second flank in the first section are each substantially constant.
  • This design corresponds to a conventional dovetail joint in the first section, which is easy to manufacture and gives a uniform stress distribution at the contact points.
  • the first flank in the first section has a lower inclination than the second flank.
  • the inclination is an essential measure of the transferable between the groove and the spring voltages normal to the decorative side, wherein at a greater slope greater voltages are transferable, without that the tongue and groove connection is released.
  • larger voltages normal to the decorative side than at the first edge are transferable to the second edge, whereby the transferable forces can be increased at a given contact surface on the second edge.
  • the inclination of the first flank in the second section is substantially constant and is the same as the inclination of the first flank in the first section. This results in a simple profile to be produced on the first flank, in which the latching resistance in the manufacture of the tongue and groove connection steadily decreases.
  • the second edge is rounded in the second section.
  • the rounded embodiment reduces the risk of stress peaks due to a notch effect.
  • the groove has a depression formed the same connection element and in the connected state of the tongue and groove connection on the first edge of the connecting element, a first contact point and on the second edge of the connecting element, a second contact point is trained.
  • a first glue channel is formed, creating a particularly permanent connection between the connecting element and the recess by means of an adhesive can be achieved.
  • the groove may have a further glue channel, wherein the further glue channel is arranged in the connected state of the tongue and groove connection adjacent to the end face of the spring. If the tongue and groove connection is adhesively bonded in the further glue channel by means of an adhesive, then it has a particularly high resistance to a dimensional change of the end face of the spring caused by the climate. Furthermore, the penetration of moisture into the region of the connecting element is prevented.
  • the pages can at least partially treated with a hydrophobic agent, in particular sprayed, coated od. Like. Be.
  • a hydrophobic agent in particular sprayed, coated od.
  • the life of the panel element according to the invention and the compound according to the invention can be increased, wherein the panel element according to the invention remains dimensionally stable even when penetrating moisture.
  • panel elements according to the invention are parquet panels according to DIN 280 or laminate panels according to EN 13329.
  • FIG. 1 an inventive panel element is shown schematically in an oblique view.
  • the panel element according to the invention has a payload side 11, a counter-pull 12 opposite the payload side 11, a first side 13 with a spring 2 and a second side 14 opposite the first side 13 with a groove 3 of the same design.
  • the spring 2 has a connecting element 4, which extends substantially perpendicular to the useful side 11 and whose cross-section has a first flank 41 and a first flank 41 opposite second flank 42, wherein the cross section of the connecting element 4 a perpendicular to the useful side 11 extending center line 44 has.
  • the panel element according to the invention according to FIG. 1 has a substantially rectangular shape. It may also be square or of another shape, e.g. rhombic, triangular, hexagonal, octagonal, oval or the like
  • the first side 13 and the second side 14 may be end faces (in this case interfaces transverse to the fiber path) of the panel element according to the invention. It can be provided that on the longitudinal sides 15, 16 each have a spring 2 and / or a groove 3 is provided, wherein the spring on one of the longitudinal sides 15, 16 may be configured differently than the spring 2 on the first side 13th In other embodiments of the panel element according to the invention it is provided that the spring 2 is formed on one of the longitudinal sides.
  • Fig. 2 the cross section of an embodiment of the panel element according to the invention is shown, wherein the cross section is normal to the longitudinal direction of the spring 2. Seen in the direction of the useful side 11, in a first portion 45 of the connecting element 4, the inclination of the first flank 41 and the second flank 42 in each case from the center line 44 to the outside. In a second portion 46 has - as seen in the direction of the Nutzseite - the inclination of the first edge 41 from the center line 44 to the outside and the inclination of the second edge 42 to the center line 44, wherein the distance perpendicular to the center line between the first edge 41 and the second edge 42 is reduced.
  • FIG. 4 the detail A of the cross-sectional view of FIG. 2 is shown, wherein the first portion 45 and the second portion 46 are highlighted by dashed lines.
  • the inclination of the first flank 41 and the inclination of the second flank 42 are each substantially constant in the first section 45.
  • the connecting element 4 has in the first Section 45, the shape of a classic dovetail with extending from a root portion 43 of the connecting element 4 flanks 41,42
  • the first edge 41 also has a substantially constant inclination in the second portion 46, which is equal to the inclination of the first flank 41 in the first section 45, wherein the execution of a substantially constant inclination of the first flank 41 in the first section 45 and the second portion 46 and an optionally between these sections 45,46 area is easy to produce.
  • the second flank 42 may be rounded in the second section 46, whereby a simple insertion of the second flank 42 of the spring 2 is ensured in the groove 3.
  • the groove 3 has a connecting element 4 of the same design recess 5. In the groove 3 '46 voltage peaks due to notch effect are avoided in the rounded version of the second edge 42 in the second section.
  • the tongue and groove connection of the embodiment of the panel element according to the invention shown in FIG. 2 is shown in Fig. 3.
  • the spring 2 is moved perpendicular to the payload side against the groove 3 and / or tilted, wherein first the first edge 41 contacts a first edge 51 of the recess 5.
  • a further movement occurs at the first edge 41 and the first edge 51 a deformation, wherein a first locking resistance must be overcome, which has its maximum value upon impact of the first edge 41 on the first edge 51.
  • the second edge 42 does not touch the first edge 51 opposite the second edge 52 of the recess, which is why on the second edge 42 in this position, no latching resistance occurs.
  • the second flank 42 After overcoming the maximum of the first latching resistance at the first edge 41, the second flank 42 approaches the second edge 52 during further movement until it touches it and a second latching resistance occurs at the second flank 42, the maximum of the second latching resistor does not occur simultaneously with the maximum of the first latching resistance, so that the force required to produce the tongue and groove connection is less than the sum of the maximum of the first latching resistor and the maximum of the second latching resistor.
  • the force required to produce the tongue and groove connection which is directed transversely to the laying plane, can be applied by means of hammer blow on a pad.
  • the arrangement of the panels according to the invention to each other is backlash-free, seamless and non-destructive releasable again.
  • a reference surface 53 running parallel to the useful surface 11 is formed on the upper side of the edge 51, which has the same vertical distance with respect to the useful surface 11 as the opposite, formed on the spring-side end face 13, to the effective surface 11 parallel, second reference surface 22, which is arranged in the installed state on the underside of the spring 2 between the end face 21 and the flank 41.
  • the spring 2 rests on the edge 53.
  • a first contact point 61 is formed on the first flank 41 and a second contact point 62 on the second flank 42, which are indicated in FIG. 3 by a respective point.
  • the transferable from one of the contact point 61, 62 force perpendicular to the effective area 11 is proportional to the area of the contact point 61, 62 and the inclination of the edge 41, 42 of the connecting element 4 on the side of the contact point 61, 62. Since the surface of the contact point 61 large As the contact point 62 can be executed, it appears advantageous if the first edge 41 in the first section 45 has a lower inclination than the second edge 42, whereby the amount of perpendicular to the effective surface 11 transferable forces of the contact points 61, 62 are mutually approximated can.
  • the contact point 61 essentially counteracts this movement.
  • the first edge 41 is arranged on the side facing away from the panel element of the connecting element 4, since the first contact point 61 may be formed larger than the second contact point 62 and therefore lower voltages occur at a predetermined stress.
  • the contact point also counteracts a climate-induced dimensional change of the spring.
  • a first glue channel 71 may be formed in the region of the depression 5 facing the counter-pull 12.
  • the glue channel 71 extends over the entire width of the cross section of the recess 5.
  • a portion of the recess 5 can be made recessed and form the glue channel 71.
  • the groove 3 may have a further glue channel 72, wherein the further glue channel 72 is arranged in the connected state of the tongue and groove connection adjacent to the end face 21 of the spring 2.
  • An adhesion of the spring 2 with the groove 3 in the region of the further glue channel 72 causes a particularly high resistance to climate-related dimensional change of the end face 21 of the spring 2. Furthermore, the penetration of moisture into the region of the connecting element 4 is prevented.
  • a long shelf life of the panel element according to the invention and of the compound according to the invention can be achieved if the sides 13, 14, 15, 16 are at least partially treated with a hydrophobic agent, in particular sprayed, coated or the like.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Floor Finish (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Finishing Walls (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connection Of Plates (AREA)

Abstract

The invention relates to a panel element comprising a use side, a counter draw opposite the use side, a first side having a tongue, and a second side, which is opposite the first side and which has a slot that is complementary to the tongue. The tongue has a connecting element, which extends essentially perpendicular to the use side and whose cross-section has a first flank and a second flank that is located opposite the first flank. The cross-section of the connecting element has a center line running perpendicular to the use surface. In a first section (45) of the connecting element (4), when viewing in the direction of the use side (11), the slope of the first flank (41) and of the second flank (42) points outward from the center line (44) and the slope of the second flank (42) points toward the center line (44). The distance between the first flank (41) and the second flank (42) decreases perpendicular to the center line (44).

Description

Die Erfindung betrifft ein Paneelelement mit einer Nutzseite, einem der Nutzseite gegenüberliegenden Gegenzug, einer ersten Seite mit einer Feder, einer der ersten Seite gegenüberliegenden zweiten Seite mit einer der Feder gegengleich ausgebildeten Nut, wobei die Feder ein Verbindungselement aufweist, welches sich im wesentlichen senkrecht zur Nutzseite erstreckt und dessen Querschnitt eine erste Flanke und eine der ersten Flanke gegenüberliegende zweite Flanke aufweist, wobei der Querschnitt des Verbindungselementes eine senkrecht zur Nutzseite verlaufende Mittellinie hat.The invention relates to a panel element having a payload side, a counterpart opposite the payload side, a first side having a spring, a second side opposite the first side having a groove of the same design as the spring, wherein the spring has a connecting element which is substantially perpendicular to the Useful side extends and whose cross-section has a first edge and a second flank opposite the first flank, wherein the cross section of the connecting element has a center line extending perpendicular to the useful side.

Bei bekannten derartigen Paneelelementen wird die Nut-Feder-Verbindung durch eine Bewegung senkrecht zur Nutzseite hergestellt. Eine Verschiebung der Paneelelemente parallel zur Verlegeebene ist dabei nicht erforderlich.In known panel elements of this type, the tongue and groove connection is produced by a movement perpendicular to the useful side. A shift of the panel elements parallel to the laying plane is not required.

Aus der DE 100 01 076 C1 ist ein Paneelelement bekannt, bei dem die Feder an der Stirnseite des Paneelelementes ein Hakenelement mit annähernd kreisförmigem Querschnitt und die Nut eine gegengleiche Vertiefung aufweist. Nachteilig an der Nut-Feder-Verbindung gemäß der DE 100 01 076 C1 ist, dass eine hohe Kraft zum Verbinden der Feder mit der Nut benötigt wird, weshalb es bei der Verlegung leicht zu einer Beschädigung des Paneelelementes, insbesondere der Nutzseite und/oder der Ränder der Vertiefung, kommen kann. Sind die Ränder der Vertiefung beschädigt, so weist die Nut-Feder-Verbindung oftmals einen nur geringen Halt auf, wodurch bei Beanspruchung des Paneelelementes ein unerwünschtes Lösen der Nut-Feder-Verbindung auftreten kann. Weiters ist nachteilig, dass bei wiederholtem Lösen und neuem Zusammenfügen der Nut-Feder-Verbindung aufgrund der Deformationen der Nut und/oder der Feder die von der Nut-Feder-Verbindung übertragbaren Kräfte stark herabgesetzt werden.From the DE 100 01 076 C1 a panel element is known in which the spring on the end face of the panel element has a hook element with an approximately circular cross-section and the groove has a diametrically opposed recess. A disadvantage of the tongue and groove connection according to the DE 100 01 076 C1 is that a high force is required for connecting the spring with the groove, which is why it can easily occur in the laying of damage to the panel element, in particular the Nutzseite and / or the edges of the recess. If the edges of the recess are damaged, then the tongue and groove connection often has only a slight hold, whereby an undesired release of the tongue and groove connection can occur when the panel element is stressed. Another disadvantage is that with repeated loosening and reassembly of the tongue and groove joint due to the deformations of the groove and / or the spring transferable forces of the tongue and groove connection can be greatly reduced.

Die FR 2 278 876 A offenbart ein Paneelelement mit einer Feder, welche ein Hakenelement in der Form eines Schwalbenschwanzes aufweist, wobei eine Flanke des Schwalbenschwanzes senkrecht zur Nutzseite ist. Die Nut weist ebenfalls ein Hakenelement in der Form eines Schwalbenschwanzes auf, wobei eine Flanke des Schwalbenschwanzes senkrecht zum Gegenzug ist. Nachteilig an dem Paneelelement der FR 2 278 876 A ist, dass nur an einer Seite des Hakenelementes bei der Nut-Feder-Verbindung eine Kontaktstelle ausgebildet wird, sodass die Nut-Feder-Verbindung aufgrund Herstellungstoleranzen nicht spielfrei ist und gegenüber einer klimabedingten Dimensionsänderung der Feder ein nur geringer Widerstand gegeben ist.The FR 2 278 876 A discloses a panel member with a spring having a hook member in the shape of a dovetail, wherein a flank of the dovetail is perpendicular to the useful side. The groove also has a hook element in the shape of a dovetail, wherein a flank of the dovetail is perpendicular to the counter-pull. A disadvantage of the panel element of FR 2 278 876 A is that only at one side of the hook element in the tongue and groove connection, a contact point is formed, so that the tongue and groove connection is not free of play due to manufacturing tolerances and against a climate-related dimensional change of the spring is given only little resistance.

Aus der WO 01/02670 A1 geht ein Paneelelement mit einer Feder hervor, welche die Form eines Schwalbenschwanzes aufweist, wobei eine Flanke des Schwalbenschwanzes senkrecht zur Dekorseite ist. Die Nut weist ebenfalls die Form eines Schwalbenschwanzes auf, wobei eine Flanke des Schwalbenschwanzes senkrecht zum Gegenzug ist. Bei dem Paneelelement gemäß der WO 01/02670 ist ebenfalls nachteilig, dass nur an einer Seite der Feder bzw. der Nut bei der Nut-Feder-Verbindung eine Kontaktstelle ausgebildet wird, sodass die Nut-Feder-Verbindung aufgrund Herstellungstoleranzen nicht spielfrei ist. Die Nut-Feder-Verbindung weist insbesondere gegenüber einer klimabedingten Dimensionsänderung der Feder und/oder der Nut einen nur geringen Widerstand auf, da sich die Feder gegenüber der Nut verdrehen kann.From the WO 01/02670 A1 goes out a panel element with a spring, which has the shape of a dovetail, wherein a flank of the dovetail is perpendicular to the decorative side. The groove also has the shape of a dovetail, with one flank of the dovetail being perpendicular to the counter-pull. In the panel element according to the WO 01/02670 is also disadvantageous that only at one side of the spring or the groove in the tongue and groove connection a contact point is formed, so that the tongue and groove connection is not free of play due to manufacturing tolerances. The groove-and-tongue connection has in particular compared to a climate-induced dimensional change of the spring and / or the groove only a small resistance, since the spring can rotate relative to the groove.

Die DE-U-202 03 311 offenbart ein Paneelelement mit einer Nutzseite, einem der Nutzseite gegenüberliegenden Gegenzug, einer der ersten Seite gegenüberliegenden zweiten Seite mit einer der Feder gegengleich ausgebildeten Nut, wobei die Feder sich im wesentlichen senkrecht zur Nutzseite erstreckt und zwei einander gegenüberliegende Flanken aufweist, wobei - in Richtung von der Nutzseite gesehen - in einem ersten Abschnitt der Feder die Neigung der ersten Flanke und der zweiten Flanke jeweils von der Mittellinie des Federquerschnitts nach außen weist und in einem zweiten Abschnitt die Neigung der ersten Flanke von der Mittellinie nach außen weist und die Neigung der zweiten Flanke zur Mittellinie weist, wobei sich der Abstand senkrecht zur Mittellinie zwischen der ersten und der zweiten Flanke verringert. An der Feder ist eine Rippe ausgebildet, die bei der senkrechten Verbindung zwischen zwei benachbarten Paneelelementen, in einen Haltekanal des benachbarten Paneelelements einrastet.The DE-U-202 03 311 discloses a panel member having a payload side, a payload side opposing counter, a second side opposite the first side with a tongue of the same configuration, the spring extending substantially perpendicular to the payload side and having two opposing flanks, wherein - in the direction of seen the useful side - in a first portion of the spring, the inclination of the first edge and the second edge respectively facing away from the center line of the spring cross-section and in a second portion, the inclination of the first edge facing away from the center line and the inclination of the second edge to the center line, wherein the distance is reduced perpendicular to the center line between the first and the second edge. On the spring, a rib is formed, which engages in the vertical connection between two adjacent panel elements, in a retaining channel of the adjacent panel member.

Aufgabe der Erfindung ist es, ein Paneelelement der eingangs genannten Art anzugeben, bei dem die bekannten Nachteile vermieden werden, das eine spielfreie Nut- Feder-Verbindung ermöglicht, einen hohen Widerstand gegenüber einer klimabedingten Dimensionsänderung der Feder aufweist und bei dem die zur Herstellung der Nut-Feder-Verbindung erforderlichen Kräfte möglichst gering sind.The object of the invention is to provide a panel element of the type mentioned, in which the known disadvantages are avoided, which allows a play-free tongue and groove connection, has a high resistance to climate-induced dimensional change of the spring and in which the production of the groove Spring connection required forces are as small as possible.

Erfindungsgemäß wird dies dadurch erreicht, dass - in Richtung von der Nutzseite (der im verlegten Zustand sichtbaren Oberseite) gesehen - in einem ersten Abschnitt des Verbindungselementes die Neigung der ersten Flanke, die auf der dem Paneelelement abgewandten Seite des Verbindungselements angeordnet ist, und der zweiten Flanke jeweils von der Mittellinie nach außen weist und in einem zweiten Abschnitt die Neigung der ersten Flanke von der Mittellinie nach außen weist und die Neigung der zweiten Flanke zur Mittellinie weist, wobei sich der Abstand senkrecht zur Mittellinie zwischen der ersten Flanke und der zweiten Flanke verringert.According to the invention this is achieved in that - seen in the direction of the payload side (visible in the installed state top) - in a first portion of the connecting element, the inclination of the first edge, which is arranged on the side facing away from the panel element of the connecting element, and the second Edge facing away from the center line to the outside and in a second section, the inclination of the first edge facing away from the center line to the outside and the inclination of the second flank to Center line, wherein the distance is reduced perpendicular to the center line between the first edge and the second edge.

Aufgrund dieser Ausgestaltung ergibt sich der Vorteil, dass an der ersten Flanke eine größere Kontaktstelle ausgebildet ist, wodurch bei dieser Anordnung ein besonders guter Widerstand gegenüber einer klimabedingten Dimensionsänderung der Stirnseite der Feder erreicht wird.Due to this configuration, there is the advantage that a larger contact point is formed on the first flank, whereby in this arrangement, a particularly good resistance to a climate-induced dimensional change of the end face of the spring is achieved.

Beim Herstellen der Nut-Feder-Verbindung weist der Rastwiderstand für die erste Flanke und die zweite Flanke zu unterschiedlichen Zeiten sein Maximum aufweist, wodurch die erforderliche Kraft und die Gefahr einer Beschädigung des erfindungsgemäßen Paneelelementes verringert wird. Weiters weist aufgrund dieser Aufspaltung der Rastwiderstände die Neigung an den beiden Flanken des Verbindungselementes im ersten Abschnitt von der Mittellinie nach außen, sodass eine Schwalbenschwanzverbindung vorgesehen ist, bei der an den beiden Flanken jeweils zumindest eine Kontaktstelle ausgebildet wird, wodurch ein guter Halt der Nut-Feder-Verbindung gegenüber Kräften und Momenten, welche im wesentlichen senkrecht auf die Längsachse der Feder wirken, erreicht wird. Aufgrund der Aufspaltung des Maximums der Rastwiderstände kann weiters eine größere Neigung an den beiden Flanken gewählt und die Gefahr einer Beschädigung des Paneelelementes aufgrund der zur Herstellung der Nut-feder-Verbindung erforderlichen Kraft gering gehalten werden.When producing the tongue and groove connection, the latching resistance for the first edge and the second edge at different times has its maximum, whereby the required force and the risk of damage to the panel element according to the invention is reduced. Furthermore, because of this splitting of the detent resistors, the inclination on the two flanks of the connecting element in the first section points outward from the center line, so that a dovetail connection is provided in which at least one contact point is formed on the two flanks, whereby a good hold of the groove Spring connection against forces and moments, which act substantially perpendicular to the longitudinal axis of the spring is achieved. Due to the splitting of the maximum of the latching resistances, a greater inclination on the two flanks can furthermore be selected, and the risk of damage to the panel element due to the force required to produce the tongue and groove connection can be kept low.

Gemäß einer anderen Ausgestaltung der Erfindung kann vorgesehen sein, dass die Neigung der ersten Flanke und die Neigung der zweiten Flanke im ersten Abschnitt jeweils im wesentlichen konstant ist. Diese Ausbildung entspricht einer herkömmlichen Schwalbenschwanzverbindung im ersten Abschnitt, welche einfach zu fertigen ist und eine gleichmäßige Spannungsverteilung an den Kontaktstellen ergibt.According to another embodiment of the invention, it can be provided that the inclination of the first flank and the inclination of the second flank in the first section are each substantially constant. This design corresponds to a conventional dovetail joint in the first section, which is easy to manufacture and gives a uniform stress distribution at the contact points.

In weiterer Ausbildung der Erfindung kann vorgesehen sein, dass die erste Flanke im ersten Abschnitt eine geringere Neigung als die zweite Flanke aufweist. Die Neigung ist ein wesentliches Maß für die zwischen der Nut und der Feder übertragbaren Spannungen normal zur Dekorseite, wobei bei einer größeren Neigung größere Spannungen übertragbar sind, ohne dass die Nut-Feder-Verbindung gelöst wird. Gemäß dieser Ausbildung sind an der zweiten Flanke größere Spannungen normal zur Dekorseite als an der ersten Flanke übertragbar, wodurch bei einer gegebenen Kontaktfläche an der zweiten Flanke die übertragbaren Kräfte erhöht werden können.In a further embodiment of the invention it can be provided that the first flank in the first section has a lower inclination than the second flank. The inclination is an essential measure of the transferable between the groove and the spring voltages normal to the decorative side, wherein at a greater slope greater voltages are transferable, without that the tongue and groove connection is released. According to this embodiment, larger voltages normal to the decorative side than at the first edge are transferable to the second edge, whereby the transferable forces can be increased at a given contact surface on the second edge.

Gemäß einer weiteren Ausführungsform der Erfindung kann vorgesehen sein, dass die Neigung der ersten Flanke im zweiten Abschnitt im Wesentlichen konstant ist und gleich groß wie die Neigung der ersten Flanke im ersten Abschnitt ist. Dadurch ergibt sich an der ersten Flanke ein einfach herzustellendes Profil, bei dem der Rastwiderstand bei der Herstellung der Nut-Feder-Verbindung stetig abnimmt.According to a further embodiment of the invention, it may be provided that the inclination of the first flank in the second section is substantially constant and is the same as the inclination of the first flank in the first section. This results in a simple profile to be produced on the first flank, in which the latching resistance in the manufacture of the tongue and groove connection steadily decreases.

Gemäß wieder einer anderen Ausführungsform der Erfindung kann vorgesehen sein, dass die zweite Flanke im zweiten Abschnitt verrundet ausgebildet ist. Durch die verrundete Ausführungsform wird die Gefahr von Spannungsspitzen aufgrund einer Kerbwirkung verringert.According to yet another embodiment of the invention can be provided that the second edge is rounded in the second section. The rounded embodiment reduces the risk of stress peaks due to a notch effect.

In weiterer Ausgestaltung der Erfindung kann vorgesehen sein, dass die Nut eine dem Verbindungselement gegengleich ausgebildete Vertiefung aufweist und im verbundenen Zustand der Nut-Feder-Verbindung an der ersten Flanke des Verbindungselementes eine erste Kontaktstelle und an der zweiten Flanke des Verbindungselementes eine zweite Kontaktstelle ausgebildet ist. Durch die Ausbildung der ersten Kontaktstelle und der zweiten Kontaktstelle an den Flanken des Verbindungselementes wird eine spielfreie Nut-Feder-Verbindung sichergestellt.In a further embodiment of the invention, it can be provided that the groove has a depression formed the same connection element and in the connected state of the tongue and groove connection on the first edge of the connecting element, a first contact point and on the second edge of the connecting element, a second contact point is trained. By forming the first contact point and the second contact point on the flanks of the connecting element a play-free tongue and groove connection is ensured.

Gemäß einer weiteren Ausbildung der Erfindung kann vorgesehen sein, dass im dem Gegenzug (d.h. der der Nutz- bzw. Dekorseite abgewandten Seite) zugewandten Bereich der Vertiefung ein erster Leimkanal ausgebildet ist, wodurch eine besonders dauerhafte Verbindung zwischen dem Verbindungselement und der Vertiefung mittels eines Klebstoffes erreicht werden kann.According to a further embodiment of the invention can be provided that in the counter-pull (ie the utility or decor side facing away) facing the recess a first glue channel is formed, creating a particularly permanent connection between the connecting element and the recess by means of an adhesive can be achieved.

Gemäß einer anderen Ausführungsform der Erfindung kann die Nut einen weiteren Leimkanal aufweisen, wobei der weitere Leimkanal im verbundenen Zustand der Nut-Feder-Verbindung angrenzend an die Stirnseite der Feder angeordnet ist. Wird die Nut-Feder-Verbindung mittels eines Klebstoffes im weiteren Leimkanal verklebt, so weist sie einen besonders hohen Widerstand gegenüber einer klimabedingten Dimensionsänderung der Stirnseite der Feder auf. Weiters wird das Eindringen von Feuchtigkeit in den Bereich des Verbindungselementes verhindert.According to another embodiment of the invention, the groove may have a further glue channel, wherein the further glue channel is arranged in the connected state of the tongue and groove connection adjacent to the end face of the spring. If the tongue and groove connection is adhesively bonded in the further glue channel by means of an adhesive, then it has a particularly high resistance to a dimensional change of the end face of the spring caused by the climate. Furthermore, the penetration of moisture into the region of the connecting element is prevented.

In Weiterbildung der Erfindung kann vorgesehen sein, dass - im verbundenen Zustand der Nut-Feder-Verbindung - im Bereich der Stirnseite der Nut ein sich zwischen der Feder und der Nut bis zur zweiten Kontaktstelle erstreckender durchgehender Spalt ausgebildet ist. Durch die Ausbildung des Spaltes kann sichergestellt werden, dass die Nut-Feder-Verbindung im stirnseitigen Bereich der Feder aufliegt und Normalkräfte auf die Nutzseite im stirnseitigen Bereich der Feder direkt auf die Nut übertragen werden können, wodurch die Gefahr einer Beschädigung der Feder verringert wird.In a further development of the invention can be provided that - in the connected state of the tongue and groove connection - in the region of the end face of the groove is formed between the spring and the groove to the second contact point extending through gap. Through the formation of the gap can be ensured that the tongue and groove connection rests in the frontal region of the spring and normal forces can be transmitted to the useful side in the frontal region of the spring directly to the groove, whereby the risk of damaging the spring is reduced.

In Weiterführung der Erfindung können die Seiten wenigstens bereichsweise mit einem hydrophoben Mittel behandelt, insbesondere besprüht, beschichtet od. dgl. sein. Dadurch kann die Lebensdauer des erfindungsgemäßen Paneelelementes und der erfindungsgemäßen Verbindung erhöht werden, wobei das erfindungsgemäße Paneelelement auch bei eindringender Feuchtigkeit formstabil bleibt.In continuation of the invention, the pages can at least partially treated with a hydrophobic agent, in particular sprayed, coated od. Like. Be. Thereby, the life of the panel element according to the invention and the compound according to the invention can be increased, wherein the panel element according to the invention remains dimensionally stable even when penetrating moisture.

Beispiele für Paneelelemente im Sinne der Erfindung sind Parkettpaneele gemäß der DIN 280 oder Laminatpaneele gemäß der EN 13329.Examples of panel elements according to the invention are parquet panels according to DIN 280 or laminate panels according to EN 13329.

Die Erfindung wird unter Bezugnahme auf die beigeschlossenen Zeichnungen, in welchen Ausführungsformen dargestellt sind, näher beschrieben. Dabei zeigt:

  • Fig. 1 eine schematische Schrägansicht eines erfindungsgemäßen Paneelelementes;
  • Fig. 2 einen Querschnitt einer Ausführungsform des erfindungsgemäßen Paneelelementes;
  • Fig.3 die Nut-Feder-Verbindung des Paneelelementes gemäß Fig. 2; und
  • Fig.4 das Detail A der Feder gemäß Fig. 2.
The invention will be further described with reference to the accompanying drawings, in which embodiments are shown. Showing:
  • Fig. 1 is a schematic oblique view of a panel element according to the invention;
  • Fig. 2 shows a cross section of an embodiment of the invention panel member;
  • 3 shows the tongue and groove connection of the panel element according to FIG. 2; and
  • 4 shows the detail A of the spring according to FIG. 2.

In Fig. 1 ist ein erfindungsgemäßes Paneelelement in Schrägansicht schematisch dargestellt. Das erfindungsgemäße Paneelelement weist eine Nutzseite 11, einen der Nutzseite 11 gegenüberliegenden Gegenzug 12, eine erste Seite 13 mit einer Feder 2 und eine der ersten Seite 13 gegenüberliegende zweite Seite 14 mit einer der Feder 2 gegengleich ausgebildeten Nut 3 auf. Die Feder 2 weist ein Verbindungselement 4 auf, welches sich im wesentlichen senkrecht zur Nutzseite 11 erstreckt und dessen Querschnitt eine erste Flanke 41 und eine der ersten Flanke 41 gegenüberliegende zweite Flanke 42 aufweist, wobei der Querschnitt des Verbindungselementes 4 eine senkrecht zur Nutzseite 11 verlaufende Mittellinie 44 hat.In Fig. 1, an inventive panel element is shown schematically in an oblique view. The panel element according to the invention has a payload side 11, a counter-pull 12 opposite the payload side 11, a first side 13 with a spring 2 and a second side 14 opposite the first side 13 with a groove 3 of the same design. The spring 2 has a connecting element 4, which extends substantially perpendicular to the useful side 11 and whose cross-section has a first flank 41 and a first flank 41 opposite second flank 42, wherein the cross section of the connecting element 4 a perpendicular to the useful side 11 extending center line 44 has.

Das erfindungsgemäße Paneelelement gemäß Fig. 1 weist eine im Wesentlichen rechteckige Form auf. Es kann auch quadratisch sein oder eine andere Form aufweisen, wie z.B. rhombisch, dreieckig, sechseckig, achteckig, oval od. dgl..The panel element according to the invention according to FIG. 1 has a substantially rectangular shape. It may also be square or of another shape, e.g. rhombic, triangular, hexagonal, octagonal, oval or the like

Gemäß Fig. 1 können die erste Seite 13 und die zweite Seite 14 Stirnseiten (hier Schnittstellen quer zum Faserverlauf) des erfindungsgemäßen Paneelelementes sein. Dabei kann vorgesehen sein, dass auch an den Längsseiten 15, 16 jeweils eine Feder 2 und/oder eine Nut 3 vorgesehen ist, wobei die Feder an einer der Längsseiten 15, 16 anders ausgestaltet sein kann als die Feder 2 an der ersten Seite 13. Bei anderen Ausführungsformen des erfindungsgemäßen Paneelelementes ist vorgesehen, dass die Feder 2 an einer der Längsseiten ausgebildet ist.According to FIG. 1, the first side 13 and the second side 14 may be end faces (in this case interfaces transverse to the fiber path) of the panel element according to the invention. It can be provided that on the longitudinal sides 15, 16 each have a spring 2 and / or a groove 3 is provided, wherein the spring on one of the longitudinal sides 15, 16 may be configured differently than the spring 2 on the first side 13th In other embodiments of the panel element according to the invention it is provided that the spring 2 is formed on one of the longitudinal sides.

In Fig. 2 ist der Querschnitt einer Ausführungsform des erfindungsgemäßen Paneelelementes dargestellt, wobei der Querschnitt normal zur Längsrichtung der Feder 2 ist. In Richtung von der Nutzseite 11 gesehen weist in einem ersten Abschnitt 45 des Verbindungselementes 4 die Neigung der ersten Flanke 41 und der zweiten Flanke 42 jeweils von der Mittellinie 44 nach außen. In einem zweiten Abschnitt 46 weist - in Richtung von der Nutzseite gesehen - die Neigung der ersten Flanke 41 von der Mittellinie 44 nach außen und die Neigung der zweiten Flanke 42 zur Mittellinie 44, wobei sich der Abstand senkrecht zur Mittellinie zwischen der ersten Flanke 41 und der zweiten Flanke 42 verringert.In Fig. 2, the cross section of an embodiment of the panel element according to the invention is shown, wherein the cross section is normal to the longitudinal direction of the spring 2. Seen in the direction of the useful side 11, in a first portion 45 of the connecting element 4, the inclination of the first flank 41 and the second flank 42 in each case from the center line 44 to the outside. In a second portion 46 has - as seen in the direction of the Nutzseite - the inclination of the first edge 41 from the center line 44 to the outside and the inclination of the second edge 42 to the center line 44, wherein the distance perpendicular to the center line between the first edge 41 and the second edge 42 is reduced.

In Fig. 4 ist das Detail A der Querschnittsdarstellung gemäß Fig. 2 gezeigt, wobei der erste Abschnitt 45 und der zweite Abschnitt 46 durch strichlierte Linien hervorgehoben sind. Die Neigung der ersten Flanke 41 und die Neigung der zweiten Flanke 42 sind im ersten Abschnitt 45 jeweils im Wesentlichen konstant. Das Verbindungselement 4 weist im ersten Abschnitt 45 die Gestalt eines klassischen Schwalbenschwanzes mit sich von einem Wurzelbereich 43 des Verbindungselementes 4 erweiternden Flanken 41,42 aufIn Fig. 4, the detail A of the cross-sectional view of FIG. 2 is shown, wherein the first portion 45 and the second portion 46 are highlighted by dashed lines. The inclination of the first flank 41 and the inclination of the second flank 42 are each substantially constant in the first section 45. The connecting element 4 has in the first Section 45, the shape of a classic dovetail with extending from a root portion 43 of the connecting element 4 flanks 41,42

Die erste Flanke 41 weist auch im zweiten Abschnitt 46 eine im wesentlichen konstante Neigung auf, welche gleich groß wie die Neigung der ersten Flanke 41 im ersten Abschnitt 45 ist, wobei die Ausführung einer im wesentlichen konstanten Neigung der ersten Flanke 41 im ersten Abschnitt 45 und dem zweiten Abschnitt 46 und einem gegebenenfalls zwischen diesen Abschnitten 45,46 liegenden Bereich einfach herstellbar ist.The first edge 41 also has a substantially constant inclination in the second portion 46, which is equal to the inclination of the first flank 41 in the first section 45, wherein the execution of a substantially constant inclination of the first flank 41 in the first section 45 and the second portion 46 and an optionally between these sections 45,46 area is easy to produce.

Die zweite Flanke 42 kann im zweiten Abschnitt 46 verrundet ausgebildet sein, wodurch ein einfaches Einführen der zweiten Flanke 42 der Feder 2 in die Nut 3 sichergestellt ist.The second flank 42 may be rounded in the second section 46, whereby a simple insertion of the second flank 42 of the spring 2 is ensured in the groove 3.

Die Nut 3 weist eine dem Verbindungselement 4 gegengleich ausgebildete Vertiefung 5 auf. In der Nut 3' werden bei der verrundeten Ausführung der zweiten Flanke 42 im zweiten Abschnitt 46 Spannungsspitzen aufgrund Kerbwirkung vermieden.The groove 3 has a connecting element 4 of the same design recess 5. In the groove 3 '46 voltage peaks due to notch effect are avoided in the rounded version of the second edge 42 in the second section.

Die Nut-Feder-Verbindung der Ausführungsform des erfindungsgemäßen Paneelelementes gemäß Fig. 2 ist in Fig. 3 dargestellt. Bei dem Zusammenfügen der Nut-Feder-Verbindung wird die Feder 2 senkrecht zur Nutzseite gegen die Nut 3 bewegt und/oder gekippt, wobei zuerst die erste Flanke 41 einen ersten Rand 51 der Vertiefung 5 berührt. Bei einer weiteren Bewegung tritt an der ersten Flanke 41 und dem ersten Rand 51 eine Verformung auf, wobei ein erster Rastwiderstand überwunden werden muss, welcher seinen Maximalwert beim Auftreffen der ersten Flanke 41 auf den ersten Rand 51 hat. Bei dieser Position berührt die zweite Flanke 42 den dem ersten Rand 51 gegenüberliegenden zweiten Rand 52 der Vertiefung nicht, weshalb an der zweiten Flanke 42 in dieser Position kein Rastwiderstand auftritt. Nach dem Überwinden des Maximums des ersten Rastwiderstandes an der ersten Flanke 41 nähert sich bei der weiteren Bewegung die zweite Flanke 42 dem zweiten Rand 52 an, bis sie diesen berührt und an der zweiten Flanke 42 ein zweiter Rastwiderstand auftritt, wobei das Maximum des zweiten Rastwiderstandes nicht gleichzeitig mit dem Maximum des ersten Rastwiderstandes auftritt, sodass die zur Herstellung der Nut-Feder-Verbindung erforderliche Kraft geringer als die Summe des Maximums des ersten Rastwiderstandes und des Maximums des zweiten Rastwiderstandes ist.The tongue and groove connection of the embodiment of the panel element according to the invention shown in FIG. 2 is shown in Fig. 3. When assembling the tongue and groove connection, the spring 2 is moved perpendicular to the payload side against the groove 3 and / or tilted, wherein first the first edge 41 contacts a first edge 51 of the recess 5. In a further movement occurs at the first edge 41 and the first edge 51 a deformation, wherein a first locking resistance must be overcome, which has its maximum value upon impact of the first edge 41 on the first edge 51. In this position, the second edge 42 does not touch the first edge 51 opposite the second edge 52 of the recess, which is why on the second edge 42 in this position, no latching resistance occurs. After overcoming the maximum of the first latching resistance at the first edge 41, the second flank 42 approaches the second edge 52 during further movement until it touches it and a second latching resistance occurs at the second flank 42, the maximum of the second latching resistor does not occur simultaneously with the maximum of the first latching resistance, so that the force required to produce the tongue and groove connection is less than the sum of the maximum of the first latching resistor and the maximum of the second latching resistor.

Die erforderliche Kraft zur Herstellung der Nut-Feder-Verbindung, welche quer zur Verlegeebene gerichtet ist, kann mittels Hammerschlages auf einen Schlagklotz aufgebracht werden. Die Anordnung der erfindungsgemäßen Paneele zueinander ist spielfrei, fugenlos und zerstörungsfrei wieder lösbar.The force required to produce the tongue and groove connection, which is directed transversely to the laying plane, can be applied by means of hammer blow on a pad. The arrangement of the panels according to the invention to each other is backlash-free, seamless and non-destructive releasable again.

An der nutseitigen Stirnseite 14 des Paneelelements ist an der Oberseite der Kante 51 eine zur Nutzfläche 11 parallel verlaufende erste Referenzfläche 53 ausgebildet, die den gleichen vertikalen Abstand gegenüber der Nutzfläche 11 aufweist wie die gegenüber liegende, an der federseitigen Stirnseite 13 ausgebildete, zur Nutzfläche 11 parallele, zweite Referenzfläche 22, die sich im verlegten Zustand an der Unterseite der Feder 2 zwischen der Stirnseite 21 und der Flanke 41 angeordnet ist. Im verbundenen Zustand liegt die Feder 2 auf der Kante 53 auf. Durch diesen gleichen vertikalen Abstand der ersten 53 und der zweiten 22 Referenzfläche gegenüber der Nutzfläche 11 kommt es im verbundenen Zustand der Nut-Feder-Verbindung zu einem Formschluss zwischen der ersten 53 und zweiten 22 Referenzfläche wie in Fig. 3 ersichtlich ist. Dadurch wird es erleichtert, im verlegten Zustand eine spaltfreie Oberfläche (ohne Niveauunterschied) zu erzielen.At the groove-side end face 14 of the panel element, a reference surface 53 running parallel to the useful surface 11 is formed on the upper side of the edge 51, which has the same vertical distance with respect to the useful surface 11 as the opposite, formed on the spring-side end face 13, to the effective surface 11 parallel, second reference surface 22, which is arranged in the installed state on the underside of the spring 2 between the end face 21 and the flank 41. In the connected state, the spring 2 rests on the edge 53. By this same vertical distance of the first 53 and the second 22 reference surface relative to the effective surface 11, it comes in the connected state of the tongue and groove connection to a positive connection between the first 53 and second 22 reference surface as shown in Fig. 3. This makes it easier to achieve a gap-free surface (without level difference) when installed.

Im verbundenen Zustand der Nut-Feder-Verbindung ist an der ersten Flanke 41 eine erste Kontaktstelle 61 und an der zweiten Flanke 42 eine zweite Kontaktstelle 62 ausgebildet, welche in Fig. 3 durch jeweils einen Punkt angedeutet sind.In the connected state of the tongue and groove connection, a first contact point 61 is formed on the first flank 41 and a second contact point 62 on the second flank 42, which are indicated in FIG. 3 by a respective point.

Die von einer der Kontaktstelle 61, 62 übertragbare Kraft senkrecht zur Nutzfläche 11 ist proportional zur Fläche der Kontaktstelle 61, 62 und der Neigung der Flanke 41, 42 des Verbindungselementes 4 an der Seite der Kontaktstelle 61, 62. Da die Fläche der Kontaktstelle 61 großer als die der Kontaktstelle 62 ausgeführt werden kann, erscheint es vorteilhaft, wenn die erste Flanke 41 im ersten Abschnitt 45 eine geringere Neigung als die zweite Flanke 42 aufweist, wodurch der Betrag der senkrecht zur Nutzfläche 11 übertragbaren Kräfte der Kontaktstellen 61, 62 gegenseitig angenähert werden können.The transferable from one of the contact point 61, 62 force perpendicular to the effective area 11 is proportional to the area of the contact point 61, 62 and the inclination of the edge 41, 42 of the connecting element 4 on the side of the contact point 61, 62. Since the surface of the contact point 61 large As the contact point 62 can be executed, it appears advantageous if the first edge 41 in the first section 45 has a lower inclination than the second edge 42, whereby the amount of perpendicular to the effective surface 11 transferable forces of the contact points 61, 62 are mutually approximated can.

Weiters hat sich als günstig herausgestellt, wenn - im verbundenen Zustand der Nut-Feder-Verbindung - im Bereich der Stirnseite 31 der Nut 3 ein sich zwischen der Feder 2 und der Nut 3 bis zur zweiten Kontaktstelle 62 erstreckender Spalt 8 ausgebildet ist. Dadurch kann sichergestellt werden, dass die Stirnseite 21 der Feder im Bereich der Nutzseite 11 spaltenfrei an der Nutzseite 11 des angrenzenden erfindungsgemäßen Paneelelementes anliegt, wobei herstellungsbedingte Toleranzen durch den Spalt 8 ausgeglichen werden können. Weiters kann sichergestellt werden, dass die Nut-Feder-Verbindung im Bereich der Stirnseite 21 der Feder 2 aufliegt und Normalkräfte auf die Nutzseite 11 im stirnseitigen Bereich der Feder 2 direkt auf die Nut 3 und einen darunter liegenden Boden übertragen werden können, sodass keine Biegemomente in der Feder auftreten und die Gefahr einer Beschädigung der Feder 2 gering ist.Furthermore, it has proved to be advantageous if - in the connected state of the tongue and groove connection - in the region of the end face 31 of the groove 3 is formed between the spring 2 and the groove 3 to the second contact point 62 extending gap 8. This can ensure that the end face 21 of the spring rests in the area of the useful side 11 without gaps on the useful side 11 of the adjacent panel element according to the invention, wherein production-related tolerances can be compensated by the gap 8. Furthermore, it can be ensured that the tongue and groove connection rests in the region of the end face 21 of the spring 2 and normal forces can be transmitted to the useful side 11 in the frontal region of the spring 2 directly to the groove 3 and an underlying ground, so that no bending moments occur in the spring and the risk of damage to the spring 2 is low.

Wird das in Fig. 3 rechts dargestellte erfindungsgemäße Paneelelement nach unten im Uhrzeigersinn gedreht, so wirkt im Wesentlichen die Kontaktstelle 61 dieser Bewegung entgegen. In diesem Zusammenhang erscheint es vorteilhaft zu sein, wenn die erste Flanke 41 auf der dem Paneelelement abgewandten Seite des Verbindungselementes 4 angeordnet ist, da die erste Kontaktstelle 61 größer als die zweite Kontaktstelle 62 ausgebildet sein kann und daher bei einer vorgegebenen Beanspruchung geringere Spannungen auftreten. Die Kontaktstelle wirkt auch einer klimabedingten Dimensionsänderung der Feder entgegen.If the panel element according to the invention shown on the right in FIG. 3 is rotated clockwise downwards, the contact point 61 essentially counteracts this movement. In this context, it appears to be advantageous if the first edge 41 is arranged on the side facing away from the panel element of the connecting element 4, since the first contact point 61 may be formed larger than the second contact point 62 and therefore lower voltages occur at a predetermined stress. The contact point also counteracts a climate-induced dimensional change of the spring.

Eine besonders dauerhafte und belastbare Nut-Feder-Verbindung kann erreicht werden, wenn die Feder 2 mit der Nut 3 verklebt wird. Dazu kann im dem Gegenzug 12 zugewandten Bereich der Vertiefung 5 ein erster Leimkanal 71 ausgebildet sein. Bei der in Fig. 3 gezeigten Ausführungsform erstreckt sich der Leimkanal 71 über die gesamte Breite des Querschnitts der Vertiefung 5. In anderen Ausführungsformen kann auch ein Bereich der Vertiefung 5 vertieft ausgeführt sein und den Leimkanal 71 ausbilden.A particularly durable and resilient tongue and groove connection can be achieved when the spring 2 is glued to the groove 3. For this purpose, a first glue channel 71 may be formed in the region of the depression 5 facing the counter-pull 12. In the embodiment shown in Fig. 3, the glue channel 71 extends over the entire width of the cross section of the recess 5. In other embodiments, a portion of the recess 5 can be made recessed and form the glue channel 71.

Weiters kann die Nut 3 einen weiteren Leimkanal 72 aufweisen, wobei der weitere Leimkanal 72 im verbundenen Zustand der Nut-Feder-Verbindung angrenzend an die Stirnseite 21 der Feder 2 angeordnet ist. Eine Verklebung der Feder 2 mit der Nut 3 im Bereich des weiteren Leimkanals 72 bewirkt einen besonders hohen Widerstand gegenüber einer klimabedingten Dimensionsänderung der Stirnseite 21 der Feder 2. Weiters wird das Eindringen von Feuchtigkeit in den Bereich des Verbindungselementes 4 verhindert.Furthermore, the groove 3 may have a further glue channel 72, wherein the further glue channel 72 is arranged in the connected state of the tongue and groove connection adjacent to the end face 21 of the spring 2. An adhesion of the spring 2 with the groove 3 in the region of the further glue channel 72 causes a particularly high resistance to climate-related dimensional change of the end face 21 of the spring 2. Furthermore, the penetration of moisture into the region of the connecting element 4 is prevented.

Eine lange Haltbarkeit des erfindungsgemäßen Paneelelementes und der erfindungsgemäßen Verbindung kann erreicht werden, wenn die Seiten 13, 14, 15, 16 wenigstens bereichsweise mit einem hydrophoben Mittel behandelt, insbesondere besprüht, beschichtet od. dgl. sind.A long shelf life of the panel element according to the invention and of the compound according to the invention can be achieved if the sides 13, 14, 15, 16 are at least partially treated with a hydrophobic agent, in particular sprayed, coated or the like.

Claims (10)

  1. A panel element having a utilization side (11), a counter draw (12) opposite the utilization side (11), a first side (13) having a tongue (2), a second side (14) which is located opposite the first side (13) and has a groove (3) with a contour opposite to that of the tongue (2), the tongue (2) having a connecting element (4) which extends substantially normal to the utilization side (11) and whose cross-section has a first flank (41) and a second flank (42) opposite the first flank (41), the cross-section of the connecting element (4) having a center line (44) normal to the utilization side (11) and - viewed in the direction of utilization side (11) - the inclination of the first flank (41) and the second flank (42) each points from the center line (44) outwards in a first section (45) of the connecting element (4) and in a second section (46) the inclination of the first flank (41) points from the center line (44) outwards and the inclination of the second flank (42) points to the center line (44), the distance normal to the center line (44) being reduced between the first flank (41) and second flank (42), characterized in that the first flank (41) is arranged on the side facing away from the panel element of connecting element (4).
  2. The panel element according to claim 1, characterized in that the inclination of the first flank (41) and the inclination of the second flank (42) are substantially constant in the first section (45).
  3. The panel element according to claim 2, characterized in that in the first section (45) the first flank (41) has an inclination smaller than that of the second flank (42).
  4. The panel element according to any one of claims 2 and 3, characterized in that the inclination of the first flank (41) is substantially constant in the second section (46) and commensurates with the inclination of the first flank (41) in the first section (45).
  5. The panel element according to any one of claims 1 to 4, characterized in that the second flank (42) is rounded in the second section (46).
  6. The panel element according to any one of claims 1 to 5, characterized in that groove (3) has a recess (5) with a contour opposite to that of the connecting element (4) and, when groove (3) is connected with tongue (2) of another, similar panel element, a first contact point (61) is formed on the first flank (41) of the connecting element (4) and a second contact point (62) is formed on the second flank (42) of the connecting element (4).
  7. The panel element according to claim 6, characterized in that a glue channel (71) is formed in the region facing the counter draw (12) of recess (5).
  8. The panel element according to claim 7, characterized in that groove (3) has a further glue channel (72), the glue channel (72) bordering on the face side (21) of tongue (2) of the other similar panel element when groove (3) is connected with tongue (2) of the other similar panel element.
  9. The panel element according to any one of claims 6 to 8, characterized in that - when tongue (3) is connected with groove (2) of another similar panel element - a continuous gap (8) extending between tongue (2) of the other similar panel element and groove (3) up to the second contact point (62) has been formed in the region of the face side (31) of groove (3).
  10. The panel element according to any one of claims 1 to 9, characterized in that sides (13, 14, 15, 16) are at least partially treated, in particular sprayed, coated or the like, with a hydrophobic agent.
EP03735650A 2002-07-02 2003-06-18 Panel, in particular parquet floorboard or laminate floorboard Expired - Lifetime EP1518031B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0098502A AT414252B (en) 2002-07-02 2002-07-02 PANEL ELEMENT AND CONNECTION SYSTEM FOR PANEL ELEMENTS
AT9852002 2002-07-02
PCT/EP2003/006474 WO2004005648A1 (en) 2002-07-02 2003-06-18 Panel element and connecting system for panel elements

Publications (2)

Publication Number Publication Date
EP1518031A1 EP1518031A1 (en) 2005-03-30
EP1518031B1 true EP1518031B1 (en) 2007-08-29

Family

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EP03735650A Expired - Lifetime EP1518031B1 (en) 2002-07-02 2003-06-18 Panel, in particular parquet floorboard or laminate floorboard

Country Status (8)

Country Link
US (1) US7543418B2 (en)
EP (1) EP1518031B1 (en)
CN (1) CN100378280C (en)
AT (2) AT414252B (en)
AU (1) AU2003237961A1 (en)
DE (1) DE50308071D1 (en)
ES (1) ES2292975T3 (en)
WO (1) WO2004005648A1 (en)

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Also Published As

Publication number Publication date
ES2292975T3 (en) 2008-03-16
US20050204676A1 (en) 2005-09-22
ATE371783T1 (en) 2007-09-15
DE50308071D1 (en) 2007-10-11
AU2003237961A1 (en) 2004-01-23
WO2004005648A1 (en) 2004-01-15
AT414252B (en) 2006-10-15
CN1665998A (en) 2005-09-07
ATA9852002A (en) 2006-01-15
US7543418B2 (en) 2009-06-09
CN100378280C (en) 2008-04-02
EP1518031A1 (en) 2005-03-30

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