巴西专利BR112015011235B1 MECHANICAL LOCKING SYSTEM FOR FLOOR PANELS

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专利摘要:
mechanical locking system for floor panels. the floor panels (1b, 1c) provided with a mechanical locking system comprising a separate material in order to reduce snap resistance during vertical displacement.
公开号:BR112015011235B1
申请号:R112015011235-8
申请日:2013-11-21
公开日:2021-07-20
发明作者:Darko Pervan
申请人:Ceraloc Innovation Ab；
IPC主号:

专利说明:

TECHNICAL FIELD
[001] The invention relates in general to the field of mechanical locking systems for floor panels and building panels especially floor panels with mechanical locking systems, which can be locked by a vertical displacement. FIELD OF APPLICATION OF THE INVENTION
[002] The embodiments of the present invention are particularly suitable for use on floating floors, which are formed from floor panels that are mechanically joined with a locking system integrated with the floor panel, i.e., factory assembled, which are made of one or more upper layers of varnish, decorative laminate, powder-based surfaces or decorative plastic material, an intermediate core of a wood fiber-based material or plastic material and preferably a smaller balance layer on the back side of the core . The following description of known technique, problems of known systems and objectives and features of the invention, therefore, as a non-restrictive example, is intended for this field of application and in particular in paper-based laminated flooring or paper-free formed as panels rectangular floor tiles with long and short sides adapted to be mechanically joined on both long and short sides. The long and short sides are mainly used to simplify the description of the invention. Panels can be square and can have more than four sides, which are not parallel or perpendicular to each other.
[003] It should be emphasized that the embodiments of the invention can be applied to any floor panel preferably on the short sides and can be combined with all types of known locking system on the long edges, where the floor panels are adapted to be joined using a mechanical locking system connecting the long edges in a vertical and/or horizontal direction. Embodiments of the invention can also be used to join building panels, which preferably comprise a board material, such as wall panels, ceilings, and furniture components and the like. BACKGROUND OF THE INVENTION
[004] Floating floor panels such as laminate floor panels are generally mechanically joined by means of so-called mechanical locking systems. These systems comprise locking means, which lock the panels horizontally and vertically on all edges.
[005] The main advantages of floating floors with mechanical locking systems are that they are easy to install. Several versions of locking systems are in use in the market and there is a continuous demand for improvements related to production and function costs. DEFINITION OF SOME TERMS
[006] In the following text, the visible surface of the installed floor panel is called "front side", while the opposite side of the floor panel, facing the subfloor, is called "rear side". The edge between the front and rear side is called the "join edge". By "horizontal plane (HP) or principal plane" is meant a plane, which extends parallel to the outside of the surface layer. The immediately juxtaposed tops of the two adjacent joining edges of the two joined floor panels define a "vertical plane (VP)" perpendicular to the horizontal plane. By "horizontally" is meant parallel to the horizontal plane and by "vertically" parallel to the vertical plane. By "upwards or upwards" is meant towards the front side and by "downwards or downwards" is meant towards the rear side. By "internally" is meant essentially horizontally towards the inside of the panel and by "outside" is meant essentially horizontally and away from the inner part of the panel. By "strip panel" is meant a panel comprising a strip and a locking element. By "folding panel" is meant a panel with a locking groove configured to cooperate with a locking element for horizontal locking which is adapted to be tilted and displaced vertically during locking. KNOWN TECHNIQUE AND IT'S PROBLEMS
[007] The description of the known technique below is in applicable parts also used in the embodiments of the invention.
[008] For the mechanical joining of long sides comes as short sides in the vertical and horizontal direction can be used various methods and locking systems. One of the biggest parts of the methods used is the angle press method and one of the most used locking systems is a system made of one piece with the core. Long sides are installed by slanting. The panel is then moved into a locked position along the long side. The short sides are locked by horizontal pressure.
[009] An alternative method is the so-called slope-slope method where long and short sides are locked with slope.
[0010] Recently, a new and simpler method has been developed where all floor panels can be joined with just a slant of the long edges. This installation method is generally referred to as "folding" installation. An example of such a known "folding" installation method is shown in figures 18 and 19 of WO 03/16654. A problem with this method is that a flexible snap-fit tab, disposed on one edge of a first panel, must be pressed inward by a sharp top edge of an adjacent edge of a second panel.
[0011] WO 2006/043893 (Valinge Innovation AB), Figure 13d depicts a folding locking system comprising a flexible tongue on the folding panel that locks against a rigid tongue formed on the edge of the adjacent strip panel. The flexible tongue has an inclined sliding surface on its outer and lower part which during folding slides against the rigid tongue and presses the flexible tongue inward into a sliding groove. The size of the sliding surface is limited by the thickness of the flexible tongue. It is not possible to increase this thickness as such increase will also increase the thickness of the displacement groove and this will negatively impact the strength of the locking system. SUMMARY OF THE INVENTION
[0012] An object of certain embodiments of the present invention is to provide an improved mechanical locking system, which can be locked by vertical folding, comprising a flexible tongue with an external flexible snap-fit tab connected to an edge of a folding panel .
[0013] More specifically, the goal is to provide a vertical snap-in locking system, which creates less snap-in resistance during locking.
[0014] The above objectives of certain embodiments of the invention are achieved completely or partially by mechanical locking systems and floor panels as described herein. Further embodiments of the invention are evident from the claims, description and drawings.
[0015] A first aspect of the invention comprises a set of floor panels that are mechanically connectable to one another at a first and a second edge of a first and a second floor panel respectively, wherein the upper edges of said first and second floor panels edges in a connected state define a vertical plane. The first edge is provided with a designed tongue formed in one piece with the core of the first floor panel. Said projected tongue extends beyond the vertical plane. The second edge is provided with a separate flexible tongue comprising an inner part, which is connected to a retaining groove in the second edge, and an outer flexible snap-in tab which extends upwards and in the connected state in a cavity under the projecting tongue. to lock the first and second floor panels together in a vertical direction. The first edge comprises a strip with a locking element. The second edge comprises a locking groove, which is open to a rear side of the second floor panel that faces a subfloor. A locking surface of the locking element is configured to cooperate, in the connected state, with a locking surface of the locking groove to lock the first and second floor panel together in a horizontal direction, which is at right angles to the first and second edge. The first and second floor panels are mechanically connected by a vertical displacement towards each other, wherein the flexible engagement tab and the projecting tongue are configured to cooperate during said displacement so that at least a part of the engagement flap soft fitting, in a first stage, is resiliently displaced to the second edge by the projecting tongue, and that flex fitting tab, in a second stage, is displaced to the first edge to obtain the connected state.
[0016] The invention provides the advantages that the flexible snap tab can be displaced by an inclined guide surface located on a rather soft tongue of the same material as the core, and such displacement can be done without contact with the hard panel surface higher.
[0017] The projecting tongue is preferably arranged above the strip. The projecting tongue can be arranged in the vertical plane and extends from the vertical plane.
[0018] The separate flexible tongue with the snap-in tab requires a smaller retaining groove as compared to the displacement groove shown in WO 2006/043893 (Valinge Innovation AB), figure 13d. A smaller retaining groove makes the connection stronger since the distance between the retaining groove and the locking groove can be increased.
[0019] The designed tongue preferably comprises an inclined or rounded guide surface on its upper and outer part.
[0020] The projecting tongue and the snapping tab is preferably configured so that the initial contact, during said vertical displacement, between the projecting tongue and the engaging tab is at an upper part of the engaging tab. Initial contact at the top decreases the force required to move the snap tab, or a portion of the snap tab. Decreased strength makes it easier to connect floor panels.
[0021] There may be a gap between the tops of the projecting tongue and the second edge.
[0022] There may be a space between the top of the strip and the second edge.
[0023] The designed tongue preferably comprises a locking surface on its underside that is slanted and in locked position in contact with the flexible engagement tab.
[0024] The locking surface of the projecting tongue is preferably arranged above the strip.
[0025] The flexible tongue can be glued into the retaining groove.
[0026] The retaining groove may comprise a top wall and a bottom wall and an inner wall extending between the top and bottom wall. A glue is preferably provided on the top, bottom and inner wall. The flexible tongue can be glued to the top, bottom and inside walls.
[0027] The locking surface of the locking element and/or the locking surface of the locking groove preferably extend in an essentially vertical direction or at an angle in a range from about 0 to about 45 degrees with the vertical plane . BRIEF DESCRIPTION OF THE DRAWINGS
[0028] The present invention, by way of examples, will be described in more detail with reference to the accompanying schematic drawings, which show embodiments of the present invention.
[0029] Figures 1-5 illustrate known systems.
[0030] Figures 6a-6c illustrate a first embodiment of the invention.
[0031] Figures 7a-b illustrate a second embodiment of the invention.
[0032] Figures 8a-b illustrate a third embodiment of the invention. DETAILED DESCRIPTION
[0033] For ease of understanding, various locking systems in the figures are shown schematically. It should be emphasized that improved or different functions can be achieved using combinations of the preferred modalities.
[0034] A known "folding" installation method is described in figures 1-4. Locking of short edges 1b, 1c occurs with a scissor-like movement where a flexible tongue 30 is moved inward gradually from one edge to the other edge when a long side of a panel 1c in a row is connected by slanting to an adjacent panel 1st in a previously installed row. A flexible snap-fit tab 33, which in most cases is made of a plastic section, during folding is curved horizontally along the joint. A part of the snap tab during folding is pressed inward as shown in figure 1 and other parts are in contact with the adjacent edge, figure 2, or in a fully unlocked position as shown in figure 4. The horizontal locking occurs when a locking element 8 located on a strip 6 in a first panel 1b, hereinafter referred to as a strip panel, cooperates with an adjacent second panel 1c, hereinafter referred to as a fold panel, such that the locking element 8 is inserted into a locking groove 14.
[0035] Figures 5a and 5b show that the flexible tongue 30 can be connected to an edge of the folding panel 1c or the strip panel 1b.
[0036] From a production perspective it is an advantage if the flexible tongue 30 is connected to a folding panel 1c because it is easy to insert such a flexible tongue into a retaining groove 32. There is no projecting strip 6 and the insertion of the Flexible pawl can be made with insertion equipment comprising rather simple guide devices which guide the pawl into the retaining groove 32. A problem with such a flexible pawl 30, as shown in Figure 5a, is that the locking system is difficult to lock, as the snap-in tab must be pressed inward by a sharp top edge.
[0037] Figures 6a-6c show an embodiment of the invention. A strip panel 1b comprising a strip 6 and a locking element 8 which cooperates with a locking groove 14 in a fold panel 1c for horizontal locking of two adjacent edges of the fold panel 1c and the strip panel 1b is provided. The strip panel comprises a projecting tongue 10 with an inclined or rounded guide surface 11 and a lower locking surface 12. The folding panel 1c comprises a flexible tongue 30 in a retaining groove 32, which is open to the vertical plane. VP The flexible tongue 30 has an inner portion 34 connected to the retaining groove 32 and a flexible engagement tab 33 with a sliding surface 35 extending outwardly and upwardly. The sliding surface 35, which is preferably located on an upper part of the flexible engaging tab, cooperates with the guide surface 11 during a vertical displacement of the folding panel 6c and causes a pressing force to bend the flexible engaging tab 33 inward toward the retaining groove 32 as shown in figures 6a-6b. The snap tab 33 snaps back to its initial position and into the cavity 31 when the edges 1b, 1c are aligned horizontally and the lower locking surface 12 at the bottom of the projecting tongue 10 locks against the upper part of the tab. fitting 33 as shown in figure 6c. Flexible snap-on tab 33 and projecting tongue 10 lock the edges vertically parallel to the vertical plane VP. The locking element 8 and the locking groove 14 lock the edges in a horizontal direction perpendicular to the vertical plane VP. The strip 6 and the projecting tongue 10 form a cavity 31 which in the connected state accommodates an outer part of the flexible engagement tab 33. The projecting tongue is preferably arranged above the strip in the vertical plane and extends from the vertical plane. The locking surface of the projecting tongue is preferably disposed above the strip.
[0038] The slanted guide surface 11 facilitates easy locking as the flexible fitting may not be in contact during locking with the sharp upper edge of the panel surface. The guide surface can be used to facilitate a locking even in the case where there may be a contact during folding between the top edge and the flexible snap-on tab 11.
[0039] The lower locking surface 12 can be slanted and locking can be done with a pre-tension so that the snap-in tab 11 in the locked position is pressed against a lower part of the projecting tongue 10.
[0040] Figure 7a shows that there may be a space S1 between the upper part of the tongue 10 and the adjacent panel edge. The vertical locking is performed with an upper contact point A between the projecting tongue 10 and the flexible snap-on tab 33, and a lower contact point B between the strip 6 and a lower edge of the folding panel 1c. The snap tab can be flexible or rigid depending on the design and material composition. Polymer materials are preferred and the flexible tongue can comprise a number of different materials, for example on the inside or on the snap-in tab. The flexible tongue 30 may comprise a knee joint 36 with increased flexibility that facilitates the bending and/or displacement of the engagement tab. The locking groove 14 and the retaining groove 32 are preferably displaced horizontally, in order to obtain a strong locking system, and preferably with a distance D1 which is at least 30% of the tread thickness T. locking groove 14 and the inner part of retaining groove 32 are preferably also vertically displaced by a distance D2.
[0041] Figure 7b shows that there may be a space S2 between the upper part of the strip 6 and the lower edge of the adjacent folding panel 1c. The vertical locking, in this mode, is performed with a lower contact point B between the projecting tongue 10 and the flexible snap-on tab 33, and an upper contact point A between a projecting tongue 10 and an upper part of the folding panel 1c which overlaps the projected tongue.
[0042] Figure 8a shows a mode where the upper edges of the panels are in contact with each other and the guide surface 11 extends downwardly from the panel surface. The knee joint 36 comprises a flexible material 37 that is softer than the inner part 34 and the engaging tab 33. The flexible tongue 30 comprises an inner portion 34 which comprises a lower portion 34a located under the flexible engaging tab 33.
[0043] Figure 8B shows a mode where the retaining groove 32 comprises glue 38 and the flexible tongue 30 is glued in the retaining groove. This provides a stronger locking system and cracks C extending primarily between retaining groove 32 and locking groove 14 can be avoided. The lower part of the flexible tongue 30 can be located in essentially the same horizontal plane as the lower and outer part 39 of the folding panel 1c. The retaining groove may comprise a top wall and a bottom wall and an inner wall extending between the top wall and the bottom wall. The glue is preferably provided on the top, bottom and inside wall. The flexible tongue is preferably glued to the top, bottom and inside wall.

权利要求:
Claims (11)
[0001]
1. A set of floor panels that are mechanically connectable to each other at a first and a second edge of a first and a second floor panel (1b, 1c) respectively, wherein the upper edges of said first and second edges in a connected state define a vertical plane (VP): the first edge is provided with a projecting tongue (10) formed in one piece with the core of the first floor panel, said projecting tongue (10) extends beyond the vertical plane (VP ), the second edge is provided with a separate flexible tongue (30), the first edge comprises a strip (6) with a locking element (8), the second edge comprises a locking groove (14), which is open for a rear side of the second floor panel that faces a subfloor, and a locking surface of the locking element is configured to cooperate, in the connected state, with a locking surface of the locking groove for locking the first and second panels. standing up iso to each other in a horizontal direction, which is at right angles to the first and second edge, characterized in that the flexible tongue comprises an inner part (34) which is connected to a retaining groove (32) in the second edge, and an outer flexible snap-on tab (33) extending upwards and in the connected state in a cavity (31) under the tongue designed to lock the first and second floor panel together in a vertical direction, wherein an upper contact point (A) between the projecting tongue (10) and an upper part of the second floor panel that overlaps the projecting tongue and a lower contact point (B) between the projecting tongue (10) and the snap-fit tab (33) are configured to provide vertical locking, wherein the first and second floor panel are mechanically connected by a vertical displacement towards each other, wherein the snap-fit tab (33) and tongue projected (10) are set to cooperate during said displacement so that at least a part of the flexible engaging tab (33), in a first stage, is resiliently displaced inwardly into the retaining groove (32) of the second edge by the projecting tongue ( 10), and that the flexible snap-on tab (33), in a second stage, is moved to the first edge to obtain the connected state, in which a space (S2) is provided between the upper part of the strip (6) and the second edge, so that there is no vertical interlock between the upper part of the strip and the lower edge of the second edge, and wherein the projecting tongue (10) is arranged in the vertical plane and extends from the vertical plane.
[0002]
2. Set of floor panels according to claim 1, characterized in that the projecting tongue (10) comprises an inclined or rounded guide surface (11) in its upper and outer part.
[0003]
3. Set of floor panels, according to claim 1 or 2, characterized in that the projecting tongue (10) is arranged above the strip (6).
[0004]
4. Set of floor panels, according to any one of the preceding claims, characterized in that the projecting tongue (10) comprises in its lower part a locking surface (12) which in the connected state is configured to cooperate with the flexible snap tab (33).
[0005]
5. Set of floor panels according to claim 4, characterized in that the locking surface (12) of the lower part of the projecting tongue is inclined.
[0006]
6. Set of floor panels according to claim 4 or 5, characterized in that the locking surface (12) of the lower part of the projecting tongue (10) is arranged above the strip (6).
[0007]
7. Set of floor panels, according to any one of the preceding claims, characterized in that the projecting tongue (10) and the snap-in tab (33) are configured so that the initial contact, during said vertical displacement , between the projecting tongue and the snap-in tab is at an upper part of the snap-in tab.
[0008]
8. Set of floor panels, according to any one of the preceding claims, characterized in that the flexible tongue (30) is glued to the retaining groove (32).
[0009]
9. Set of floor panels according to any one of the preceding claims, characterized in that the retaining groove (32) comprises an upper wall and a lower wall and an inner wall extending between the upper and lower wall .
[0010]
10. Set of floor panels according to claim 9, characterized in that a glue is provided on the top, bottom and inside wall.
[0011]
11. Set of floor panels, according to claim 9 or 10, characterized in that the flexible tongue is glued to the upper, lower and internal wall.

类似技术:

公开号 | 公开日 | 专利标题

BR112015011235B1|2021-07-20|MECHANICAL LOCKING SYSTEM FOR FLOOR PANELS

US9453347B2|2016-09-27|Mechanical locking system for floor panels

US9538842B2|2017-01-10|Mechanical locking system for building panels

EP3014034B1|2019-10-02|Building panel with a mechanical locking system

CA2839681C|2020-06-23|Mechanical locking of floor panels with a glued tongue

JP6139661B2|2017-05-31|Floating floor system, floor panel, and installation method thereof

US7124549B2|2006-10-24|Interconnectable panel for use primarily as flooring

US20150089896A2|2015-04-02|Mechanical locking system for floor panels

PT1863984E|2012-02-06|Flooring system comprising mechanically connectable floorboards

BR112014000516B1|2020-12-08|construction panels provided with mechanical locking system

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CN104854286B|2018-04-13|

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JP6313778B2|2018-04-18|

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