Source: https://patents.google.com/patent/EA032211B1/en
Timestamp: 2019-12-10 07:33:33
Document Index: 56375963

Matched Legal Cases: ['arts 33', 'arts 33', 'art 30', 'art 30', 'art 30', 'arts 30', 'art 30', 'art 30', 'art 30', 'art 306', 'art 30', 'art 306']

EA032211B1 - Set of building panels with a mechanical locking system - Google Patents
Set of building panels with a mechanical locking system Download PDF
EA032211B1
EA032211B1 EA201690068A EA201690068A EA032211B1 EA 032211 B1 EA032211 B1 EA 032211B1 EA 201690068 A EA201690068 A EA 201690068A EA 201690068 A EA201690068 A EA 201690068A EA 032211 B1 EA032211 B1 EA 032211B1
EA201690068A
EA201690068A1 (en
2014-06-26 Application filed by Велинге Инновейшн Аб filed Critical Велинге Инновейшн Аб
2016-05-31 Publication of EA201690068A1 publication Critical patent/EA201690068A1/en
2019-04-30 Publication of EA032211B1 publication Critical patent/EA032211B1/en
The invention relates to a set of essentially identical panels (1, 1 '), such as building panels, equipped with a mechanical locking system containing a displaceable tongue (30) located in the groove (40) for displacement with the first hole, on the first edge panels (1). The displaceable tongue is adapted to interact with the first groove (20) under the tongue, which has a second opening on the second edge of the adjacent second panel (1 ') for vertical locking of the first and second edges. The height of the first hole is greater than the second height of the second hole.
The invention relates to a set of essentially identical panels (1, D), such as building panels, equipped with a mechanical locking system containing a sliding tongue (30) located in the groove (40) for displacement with the first hole, on the first edge of the first panel (one). The displaced tongue is configured to interact with the first groove (20) under the tongue, which has a second hole on the second edge of the adjacent second panel (G) for vertically locking the first and second edges. The height of the first hole is greater than the second height of the second hole.
032211 Β1
The present invention relates to a set of panels, for example building panels, flooring panels, wall panels, ceiling panels, furniture components and the like, which have a mechanical locking system.
Building panels equipped with a mechanical locking system comprising a movable and resilient tongue, interacting with a groove for this tongue for vertical locking, are known and described, for example, \ ¥ O 2006/043893 and \ UO 2007/015669. The tongue is a separate part, made, for example, of plastic and inserted into the groove for displacement at the edge of the panel. The tongue is pushed into the groove for displacement during the vertical assembly of the panels and spring into the groove of the adjacent panel when these panels reach the locked position.
A panel lock system is also known, comprising a tongue that is movable along the edge of the panel (see, for example, \ ¥ 0 2009/116926) and interacts with a tongue groove for vertical locking. The tongue is a separate part and is equipped with many protrusions, which first correspond to the recesses of the groove under the tongue. The panels can be assembled by vertical movement, and the tongue is shifted to a position in which the protrusions no longer correspond to the recesses to provide vertical locking.
Further, a lock system is known comprising a tongue provided with, for example, a wedge element. Two adjacent panels are locked by moving the tongue along adjacent edges (see, for example, \ ¥ 0 2008/004960).
Although the present description relates to flooring panels, the methods and problems described therein also apply to other applications, such as panels intended for other purposes, such as wall panels, ceiling panels, furniture elements, etc.
A disadvantage of the known systems is that the lock system containing the slide tab requires a rather thick panel so that the lock system meets the strength requirements.
The above description of the various known aspects is their characteristic given by the applicant and not the recognition that any of the solutions described is considered a prototype.
The objective of some variants of the present invention is to improve the above technologies and prior art. In particular, in embodiments of the present invention, the strength of the known lock system is increased.
Another objective of the variants of the present invention is the creation of thinner panels with a lock system containing a movable tab.
At least some of these and other objects and advantages, which will be apparent from the present description, are achieved thanks to the first aspect of the invention, which relates to a set of essentially identical panels provided with a mechanical locking system containing a sliding tongue, which is located in the groove for displacement on the first edge of the first panel and in the first groove under the tongue on the second edge of the adjacent second panel. The offset tongue is configured to interact with the first tongue groove to lock the first and second edges in the vertical direction. The offset groove forms a first hole, and the first tongue groove forms a second hole, wherein the height of the first hole is greater than the height of the second hole. At least a portion of the biased tab is preferably pushed into the groove for biasing during assembly of the first and second panels and springed to a position in which the outer portion of the biased tab interacts with the first tongue groove for locking in the vertical direction.
The height of the second hole may be in the range of from about 20% to about 75% of the height of the first hole, preferably in the range of from about 20% to about 50% of the height of the first hole.
The first hole and the second hole are preferably open horizontally, and the vertical height of the second groove is preferably greater than the vertical height of the first hole.
The maximum height of the groove for offset may be greater than the maximum height of the first groove under the tongue. The maximum height of the first tongue groove for the tongue may be in the range of about 20% to about 75% of the maximum height of the offset groove, preferably in the range of about 20% to about 50% of the maximum height of the offset groove.
The outer part of the biased tongue is preferably provided with a recess. A smaller opening of the first tongue groove and a smaller first tongue groove increase the strength of the locking system at the second edge with the first tongue groove. The deeper offset groove is preferably made at the edge, i.e. the first edge, and to create a groove for displacement remains more material or more durable material.
This recess may include a first surface of the recess and a second surface of the recess, which are located at an obtuse angle to each other. The first surface of the recess may be
- 1,032,211 by a first surface configured to interact with a first tongue groove, preferably at a second surface for locking in the vertical direction. The angle between the upper surface of the biased tongue and the first surface of the recess may be in the range of from about 5 ° to about 15 °, preferably in the range of from about 7 ° to about 8 °. The recess and the angle can give a useful effect, which is to increase the locking strength, since the first surface and the second surface can be located at an angle that in the locked position requires increased force to push the biased tongue into the groove for bias.
The biased tab preferably has an elongated shape, and the outer longitudinal edge of the biased tab is preferably straight along substantially the entire longitudinal length of the tab. At least one end of the longitudinal edge can be chamfered, located on the short edge of the displaced tongue, to facilitate the assembly of the first and second panels with an angular movement.
The recess preferably extends along substantially the entire longitudinal length of the displaced tongue.
The beneficial effect of embodiments of the present invention may be more pronounced for thin panels, for example, less than 6 mm thick. The panels may have a thickness in the range of about 3 mm to about 10 mm, preferably in the range of about 4 mm to about 8 mm, and preferably in the range of about 4 mm to about 6 mm.
The mechanical locking system may comprise a first locking strip at the first or second edge provided with a first locking element configured to cooperate for horizontal locking with the first locking groove on the other of the first and second edges.
Since the height of the first hole is greater than the second height of the second hole, the first locking strip is preferably located on the first edge, and the first locking groove is on the second edge. The outer and lower parts of the biased tongue preferably have a recess.
The panels may be rectangular, and the mechanical locking system may comprise a second locking strip at the third or fourth edge provided with a second locking element configured to cooperate for horizontal locking with a locking groove on another of the third or fourth edge of the adjacent third panel. This third or fourth edge is preferably provided with a second tongue configured to cooperate for vertical locking with a second tongue groove on another of the third or fourth edge of an adjacent third panel. Each edge provided with a locking groove is preferably provided with a lower edge surface configured to interact with the upper surface of the locking strip on an adjacent panel. The lower surface of the edge is thus preferably located in the same plane as the upper surface of the locking strip on the adjacent panel.
The upper surface of the first locking strip is preferably located in the same plane as the upper surface of the second locking strip. A mechanical locking system at the third and fourth edges is normally created up to a mechanical locking system at the first and second edges. If these upper surfaces are in the same plane or essentially in the same plane, the remains of the mechanical locking system at the third and fourth edges, in the corners of the panels, can be automatically removed. Such residues are usually thin and can break off over time, for example, during packaging, transport or assembly.
The mechanical locking system on the third and fourth edges can be made with the possibility of assembly by angular movement.
The mechanical locking system on the first and second edges can be made with the possibility of assembly by vertical movement.
According to a second aspect of the invention, there is provided a set of substantially identical panels provided with a mechanical locking system comprising a bias tab located in a groove for biasing on a first edge of a first panel and in a first groove for a tab on a second edge of a second panel. The biased tongue is configured to interact with the first tongue groove to lock the first and second edges in the vertical direction. The displaced tongue comprises at least two folding parts, wherein at least one of the folding parts is provided with a lower and / or upper friction joint at a distance from the innermost part in the groove for displacing the folding part. Distance can make it easier to fit the offset tab in the offset groove. At least a portion of the biased tab is preferably pushed into the groove for biasing during assembly of the first and second panels and springed to a position in which the outer portion of the biased tab interacts with the first tongue groove for locking in the vertical direction.
The offset groove may include an upper wall, a lower wall, and an inner wall extending between the lower and upper walls. The inner wall is preferably rounded
- 2 032211 or may have a flat portion provided with a rounded portion adjacent to the upper and / or lower wall. The rounded shape and the rounded section (s) increase the strength of the mechanical locking system.
The beneficial effect of this option may be important for thin panels, for example with a thickness of less than 6 mm. The panels may have a thickness in the range of from about 3 mm to about 10 mm, preferably in the range of from about 4 mm to about 8 mm.
The upper friction joint is preferably configured to interact with a flat portion of the upper wall. The upper friction joint may comprise a protruding portion of the bendable part that extends over the remaining parts of the biased tongue. The upper surface of the biased tab may be biased along the upper wall during assembly of the first panel and second panel. The lower surface of the biased tab is biased along the lower wall during assembly of the first panel and the second panel.
The lower friction joint is preferably configured to interact with a flat portion of the lower wall. The lower friction joint may comprise a protruding portion of the bendable part that extends beneath the rest of the biased tongue.
The innermost part of the bending part may have upper and / or lower chamfers. The upper and / or lower chamfers facilitate the insertion of the slide tab into the offset groove.
The displaced tongue may have an elongated shape, and the outer longitudinal edge of the displaced tongue is preferably straight and extends substantially along the entire longitudinal length of the displaced tongue. The chamfer can be made at least at one end of the longitudinal edge on the short edge of the displaced tongue to facilitate the assembly of the first and second panels with an angular movement.
The outer portion of the biased tongue may have a recess, preferably extending along substantially the entire longitudinal length of the tongue. The first surface of the recess is preferably configured to interact with the second surface of the first groove under the tongue for locking in the vertical direction.
The mechanical locking system may include a first locking strip at least on the first or second edge, provided with a first locking element configured to interact with the locking groove on the other of the first or second edge for locking in the horizontal direction.
The size of the groove for displacement at the first edge may be larger than the size of the first groove under the tongue at the second edge. The first locking strip is preferably located at the first edge, and the first locking groove at the second edge. The outer and lower parts of the biased tongue preferably have a recess.
The offset groove may have a first hole, and the first tongue groove may have a second hole, wherein the first height of the first hole is preferably greater than the second height of the second hole.
The mechanical locking system at the first and second edges can be made with the possibility of assembly by vertical movement.
According to a third aspect of the invention, there is provided a set of substantially identical panels provided with a mechanical locking system comprising a sliding tongue located in the groove for biasing at the first edge of the first panel and in the first groove for the tongue at the second edge of the second panel. The biased tongue is configured to interact with the first tongue groove to lock the first and second edges in the vertical direction. At least a portion of the biased tab is preferably pushed into the groove for biasing during assembly of the first and second panels and springed to a position in which a portion of the biased tab interacts with the first tongue groove for locking in the vertical direction. The biased tongue contains the first and third surfaces, and the first groove under the tongue contains the second and fourth surfaces. The first angle between the slide tab and the face of the second panel is larger than the second angle between the fourth surface and the face. The first surface of the displaced tongue is configured to interact with the second surface of the groove under the tongue at the first load on the mechanical locking system. The third surface of the displaced tongue is configured to interact with the fourth surface of the tongue groove under a second load on the mechanical locking system. The first load can correspond to the load under normal conditions, and the second load can correspond to an increased load when, for example, an armchair, sofa or bookcase is installed on the first and second panels. The first angle may have the advantage that a slight offset of the displaced tongue pushes the first and second panels towards each other in the required locked position, in which the face of the second panel is essentially in the same vertical position as the face of the first panels. The second angle may give the advantage that the third and fourth surfaces are capable of carrying a large load and that the pushing-out tongue is prevented from being pushed out of the first groove under the tongue. Another advantage of the second angle is that the height of the hole
- 3 032211 of the first tongue groove can be reduced. This reduced height may increase the strength of the mechanical locking system. The first angle may be in the range of from about 30 ° to about 45 °, and the second angle may be in the range of from about 10 ° to about 25 °. The difference between the first angle and the second angle can be in the range of from about 10 ° to about 35 °.
The mechanical locking system according to the first and second aspects may comprise first, second, third and fourth surfaces present according to the third aspect.
The mechanical locking system at the first and second edges can be configured to be assembled in a vertical movement.
The panels in the first, second or third aspects may be floor panels, wall panels, ceiling panels, furniture component, etc.
The core of the panels according to the first, second or third aspects may be wood based cores, preferably made of medium density fiberboard, high density fiberboard, structurally oriented board (SOD), wood-plastic composite, plywood or chipboard. The core may be a plastic core containing thermosetting plastic or thermoplastic, such as vinyl, PVC, polyurethane or PET. The plastic core may contain fillers. A thinner first tongue groove in a panel with a layered core, for example made of plywood, may be easier to place in a favorable position relative to the core layers.
The face of the panels according to the first, second or third aspects of the present invention preferably has a decorative layer, and the back face preferably has a balancing layer.
The edge of the panels according to the first, second or third aspects of the invention from which details of the locking system can be made, such as the first and second locking strips, the first and second locking elements, the first and second locking grooves and the first and second grooves for the tongue, may contain material core.
The following is a more detailed description of an example of the present invention with reference to the attached schematic drawings illustrating embodiments of the present invention.
FIG. 1A-1B is a known locking system with a movable tongue.
FIG. 2A-2C is a cross section of known locking systems with a separate and movable tongue.
FIG. 3A-3B are sections of a known locking system with a separate and movable tongue.
FIG. 4A-4B are sectional views of panels of embodiments of the present invention.
FIG. 5A-5B are sectional views of panels of an embodiment of the present invention.
FIG. 6A-6B are cross-sections of the long and short edges of panels according to an embodiment of the present invention.
FIG. 6C is a cross section of known panels.
FIG. 7A-7B are panels according to an embodiment of the present invention.
FIG. 8Α-8Ό is a displaceable tongue according to an embodiment of the present invention.
FIG. 9A is a cross section of known panels.
FIG. 9B-9C are cross-sections of embodiments of the present invention.
FIG. 10A-10B are cross-sectional views of embodiments of the present invention.
FIG. 11A-11C are cross-sections of embodiments of the present invention.
FIG. 12A-12B are cross-sectional views of embodiments of the present invention.
FIG. 13A-13C are cross-sectional views of embodiments of the present invention.
FIG. 14A-14B are cross-sectional views of embodiments of the present invention.
In FIG. 1A-1B show a known mechanical locking system for building panels, which comprises a sliding tongue 30 on a first edge of a first panel 1 and a first groove 20 for a tongue on a second edge of a second panel 1 ′. The biased tongue is configured to interact with the first tongue groove for locking in the vertical direction. The displaced tongue 30 is a separate part, made of plastic, for example, and inserted into the groove for displacement on the first edge of the first panel 1. The tongue is pushed into the groove for displacement during assembly of the first and second edges of the first and second panels. The biased tongue springs into the first groove 20 under the tongue on the second edge of the second panel 1 'when the panels come into the locked position. The third and fourth edges of the panels are equipped with a locking system that allows them to be assembled with the adjacent panel 1 by angular movement to simultaneously assemble the first and second edges and the third and fourth edges.
In FIG. 2A-2C and 3A-3B show cross-sections of different variants of the known biased tongue 30 during assembly of the first and second panels 1, 1 ′. The second panel 1 'with the first tongue groove 20 is offset relative to the second panel with a movable tongue 30 that is pushed into the groove 40 to be offset by the edge of the second panel. The biased tongue 30 springs back and enters the first groove 20 under the tongue when the panels have reached the assembled position, and locks the first and second panels vertically.
- 4 032211
Embodiments of the present invention are shown in FIG. 4A-4B, 5A-5B, 6A-6B, 7A-7B, 8Α-8Ό, 9B-9C, 10A-10B, 11A-11C, 12A-12B and 13A-13C. A mechanical locking system is formed at the first and second edges substantially identical to the first and second panels 1, 1 ′. A mechanical locking system is designed to lock the first edge of the first panel on the second edge of the second panel in the vertical and / or horizontal directions. One embodiment of a mechanical locking system allows the first and second panels to be assembled by vertical displacement of the second edge of the second panel relative to the first edge of the first panel. The mechanical locking system is preferably formed by mechanically cutting, for example, milling, drilling and / or sawing, the edges of the panels and has a sliding tongue 30, preferably made of plastic. The displaced tongue can be folding and can be provided with protruding folding parts, for example, as in the displaced tongues described in AO 2006/043896 and AO 2007/015669. The displaced tongue can also be adapted to be locked by movement along the first and second edges, for example, displaced tongues described in AO 2009/116926 and AO 2008/004960.
Options include a bias tab 30 located in the groove 40 for biasing on the first edge of the first panel 1. The bias tab 30 interacts with the first tongue groove 20, which is formed on the second edge of the second panel 1 ', to lock the first and second edges in the vertical direction. The first locking strip 6 with a vertically protruding first locking element 8 is formed on the first edge of the first panel. The first locking element 8 cooperates with the first locking groove 14 formed in the second edge of the second panel 1 'to lock the first and second edges in the horizontal direction. The lower surface of the second edge may be located in the same plane as the first upper surface of the first locking element. The lower surface of the edge can be configured to interact with the first upper surface to lock the first and second edges in the vertical direction. In FIG. 4A4B and 5A-5B show that the height 21 of the opening of the first groove 20 for the tongue is less than the height 41 of the groove 40 for offset. Preferably, the maximum height of the first tongue groove 20 is less than the maximum height 41 of the offset groove 40. The tongue groove and the offset groove may have a chamfer or fillet that is not included in the height of the hole or in the maximum height of the groove when measuring the height of the grooves. Such a first tongue groove creates an effect whereby the distance 23 between the lower side of the second panel and the bottom of the first tongue groove can be increased, and the distance 50 between the first tongue groove 20 and the locking groove 14 can be increased. The increased distance 50 between the tongue groove 20 and the locking groove 14 increases the strength of the locking system. To further increase the distance and strength, the bias groove and the biased tongue can be tilted, as shown in FIG. 4B and 5A-5B. The outer part of the biased tongue preferably has a recess 31, so this outer part can be shifted into the first groove 20 under the tongue.
With a smaller first tongue groove 20, the distance 43 between the face of the first panel and the offset groove 40 can be increased and / or the thickness of the locking strip 6 can be increased with the same or increased distance 50 between the first tongue groove 20 and the locking groove 14 for the same thickness of the first and second panels as shown in FIG. 5B.
The first locking groove may also be located on the first panel with a groove for offset. Such options are preferably provided with a removable and flexible tongue, which is attached to parts of the groove for biasing with adhesive. The interior of the flexible and displaceable tongue is preferably glued to the bottom surface of the displacement groove. This interior can also be glued to the upper and / or lower surfaces of the offset groove 40.
Options include a set of substantially identical panels comprising a first panel 1, a second panel 1 'and a third panel 1, as shown in FIG. 7A. Each panel may have a rectangular shape, and the mechanical locking system may comprise a second locking strip 16 on the third edge 5a provided with a second locking 18 and a second locking groove 24 on the fourth edge 5b, as shown in FIG. 6A and 7B. The second locking element 18 is configured to cooperate with the second locking groove 24 to lock the third and fourth edges in the horizontal direction. The mechanical locking system may comprise a second tongue 12 under the tongue on the third edge 5a and a second tongue 13 on the fourth edge 5b. The second tongue and the second tongue groove are configured to cooperate to lock the third and fourth edges 5a, 5b in the horizontal direction. The fourth edge 5b is preferably provided with a lower edge surface adapted to interact with the second upper surface of the second locking strip. The lower surface of the edge is thus located in the same plane as the second upper surface of the second locking strip on the adjacent panel.
In FIG. 7A shows the assembly process of the second panel 1 'with the first and third panels 1, 1. The second panel 1' is inclined, leaning on the fourth edge 5b of the second panel 1 ', to simultaneously lock the fourth edge 5b of the second panel 1' on the third edge 5a of the third panel 1 and a second edge 4b of the second panel 1 'on the first edge 4a of the first panel 1.
The first upper surface 9 of the first locking strip is preferably located in the same
- 5 032211 plane, as the second upper surface 19 of the second locking strip 16. The mechanical locking system on the third and fourth edges 5a, 5b is normally created before the mechanical locking system on the first and second edges 4a, 4b. If the first and second upper surfaces are in the same plane or essentially in the same plane, the remains of the mechanical locking system at the third and fourth edges 5a, 5b at the corners of the panel can be automatically removed. The residues are essentially thin and may subsequently break off, for example, during packaging, transport or assembly. In FIG. 7B shows an embodiment with a first angle 2a between the fourth edge 5b and the first edge 4a and with a second angle 2b between the third edge 5a and the second edge 4b. The remnants of the mechanical locking system on the fourth edge and in the first corner 2a are automatically removed when the mechanical locking system is formed on the first edge. The remnants of the mechanical locking system on the third edge and in the second corner 2b are automatically removed when the mechanical locking system is formed on the second edge.
In FIG. 6A shows a cross section of the third edge of the first panel 1 and the fourth edge of the third panel 1. The mechanical locking system on the third and fourth edges comprises a second tongue 13 on the fourth edge and a second groove 12 for the tongue on the third edge. The third edge is provided with a second locking strip 16 protruding from the third edge and having a second locking element 18, and the fourth edge is provided with a second locking groove. The second upper surface 19 of the locking strip 16 is in contact with the lower surface of the fourth edge for locking in the vertical direction. The shown mechanical locking system on the third and fourth edges is made with the possibility of assembly and locking with an angular movement. The second upper surface is located in the horizontal plane 60. In FIG. 6B shows a cross section of the first edge of the first panel and the second edge of the second panel. The first edge is provided with a first locking strip 6 protruding from the first edge with a locking element 8, and the second edge is provided with a first locking groove. The first upper surface 9 of the first locking strip is in contact with the lower surface of the second panel for locking in the vertical direction. Remains of a mechanical locking system on the third edge and in the second corner and on the fourth edge and in the first corner can be automatically removed if these first and second upper surfaces are in the same horizontal plane 60. Unremoved residues, such as residues 70 on the second corner, shown in FIG. 1B are substantially thin and can easily break off, for example, during packaging, transport, or assembly.
A known mechanical locking system at the first and second edges, as shown in FIG. 6C has a first upper surface 9 located in the lower horizontal plane 61 relative to the second upper surface at the third and fourth edges. For a known mechanical locking system, an additional operation is required to remove residuals. The present invention allows to increase the thickness of the first locking strip and, thereby, to arrange the first and second upper surfaces in the same horizontal plane 60, without reducing the distance 50 between the first locking groove 14 and the first groove 20 under the tongue. As a result, the strength of the mechanical locking system is increased.
In FIG. 8Ά-8Ό show a preferred embodiment of the displaced tongue 30. The displaced tongue comprises a plurality of folding parts 33. These folding parts have lower and upper friction joints 35 located at a distance from the innermost part of the folding part. This innermost part of the bending parts 33 has upper and lower chamfers 39. The tongue has an elongated shape, and the outer edge of the biased tongue is preferably straight along substantially the entire length of the tongue. The outer portion 38 of the biased tongue has a recess 31, which preferably extends along the entire length of the tongue. The first surface 81 of the recess is configured to interact with the first surface of the first groove under the tongue for locking in the vertical direction. A chamfer 37 is made on each longitudinal edge on the short edge of the displaced tongue to facilitate assembly of the first and second panels by angular movement. The tongue comprises a groove 34 on each folding member 33. At least a portion of the folding member 33 is pushed into the groove 34 during assembly.
The recess 31 may include a second surface 85 of the recess, which is located at an obtuse angle to the first surface 81 of the recess. The angle between the upper surface of the biased tongue and the first surface 81 of the recess may be in the range of from about 5 ° to about 15 °, preferably in the range of from about 7 ° to about 8 °.
The biased tongue is preferably made by injection molding, and in FIG. 8A shows the runners at the short ends of the biased tongue.
In FIG. 8C shows a bias tab 30 located in the groove 40 for biasing in position during assembly when the tab is pushed into the groove for biasing. The offset groove 40 includes an upper wall, a lower wall, and an inner wall extending between the lower and upper walls. The inner wall has a rounded shape. The inner wall, alternatively, may comprise a flat portion provided with a rounded portion adjacent to the upper and / or lower walls. The upper friction joint is configured to interact with a flat portion of the upper wall. The lower friction joint is made with the possibility of interaction
- 6 032211 vat with a flat section of the bottom wall. The upper surface of the displaced tongue can be made with the possibility of displacement along the lower wall during the assembly of the first and second panels.
In FIG. 9A shows another known mechanical locking system, and FIG. 9B-9C show an improved version of embodiments of the present invention. The biased tongue 30 has a recess on the outside, and the first tongue groove 20 is reduced. The thickness of the locking strip 6 is increased, and the bottom of the offset groove 40 has rounded corners. In FIG. 9C shows that the upper and lower outer parts of the biased tongue may be provided with recesses. In particular, for flooring panels made of soft material, for example, containing a plastic core, such as PVC, the joint is more durable if the upper and lower external parts of the displaced tongue are in contact with the first groove under the tongue.
Other embodiments of the present invention are shown in FIG. 10A-10B. The beneficial effect of the reduced first tongue groove 20 and the displaced tongue 30 provided with a recess on the outside in the embodiment of FIG. 10A is used to make the locking strip 6 thicker. In FIG. 10B shows an embodiment in which the bias groove 40 is provided with rounded corners, and the locking groove 14 and the locking element 8 have chamfered surfaces to further increase the strength of the locking system.
In FIG. 11A, an embodiment is shown which is of the type disclosed in ν/ 2011/127981, with an offset tongue 30 located on an edge of a panel provided with a locking groove. A recess at the outer edge of the displaced tongue is shown on the lower edge of the displaced tongue, but this recess can also be located on the upper edge of the displaced tongue.
In FIG. 11B-11C show an embodiment provided with a protruding portion 51 on the underside of the second edge. The protruding portion 51 is configured to cooperate with a recess 52 on the upper side of the first locking strip and with the first locking element 8. Such configurations can increase the thickness of the inside of the locking strip and increase the strength of the mechanical locking system.
In FIG. 12A-12B show an embodiment comprising a bias tab 30 configured to be locked by the bias element 31. The bias element may include a wedge-shaped element (not shown) that pushes the bias tab 30 into the first groove 20 under the tab for locking the first and second edges vertically. The biased element may be biased by pushing the biased element 32 into the groove 40 for bias along the second edge or by pulling the biased element along the second edge and out of the groove 40 for bias. In FIG. 12A shows an embodiment in the unlocked position, and in FIG. 12B shows an embodiment in the locked position.
In FIG. 13A-13C show a movable tongue comprising three parts: an inner part 30b, an outer part 30a, and a middle part 30c connected to each other. These parts are preferably made of plastic material. The outer and inner parts 30a and 30b are formed of a stiffer material than the middle part, which provides the main flexibility to the flexible tongue. The middle portion may be made of a material similar to rubber, and may also be used for friction coupling to prevent the flexible tongue from falling out of the groove 40 after being connected to the edge of the panel. The flexible middle portion 30c is preferably located at the bottom of the flexible tongue. The middle portion 30c comprises an upper portion 31a that is compressed during locking and a lower portion 31b that expands during locking. The outer portion 30a preferably protrudes outward from the vertical plane of the UR, which intersects the upper adjacent edges of the panels 1, 1 ′. This locking system allows locking with small horizontal sliding forces during locking. The vertical size of the tongue groove 20 may be less than half the vertical size of the groove 40 for offset. The inner part 30b includes a locking edge 32, which may be located in the upper or lower part of the flexible tongue.
A flexible tongue can also be formed of only two parts, preferably without a more rigid inner part 30b. The outer part 30a can be connected to the inner part 306, which can perform the same functions as the above middle part 30c, and flexibility can be achieved by compressing and expanding the upper and lower parts of the flexible inner part when the outer part is rotated inward. This reduces the groove for offset. Such a two-part tab can also be used to lock the panel in accordance with the principles shown in FIG. 2A-2C. The outer portion 30a may face downward when the flexible tab is located on the edge of the panel containing the strip 6 (strip panel), and the locking element 8 and the flexible inner portion 306 may be located at the top of the flexible tongue 30. The outer portion 30a may be directed upward, when the flexible tongue is connected to the edge of the panel containing the locking groove (patch panel), and the flexible inner part 306 may be located at the bottom of the flexible tongue 30.
In FIG. 14A and 14B show an embodiment of a mechanical locking system and its fragment on an enlarged scale. This mechanical locking system comprises a sliding tongue 30, which is located in the groove 40 for displacement on the first edge of the first panel 1, and the first groove 20 under the tongue on the second edge of the second panel 1 '. The biased tongue 30 is configured to interact with
- 7 032211 the first groove under the tongue. At least a portion of the biased tongue is preferably pushed into the groove to bias the first and second panels during assembly, and springed into a position in which a portion of the biased tongue 30 cooperates with the first groove 20 under the tongue for locking in the vertical direction. The biased tongue 30 comprises a first and third surface 81, 83, and the first tongue groove 20 comprises a second and fourth surface 82, 84. The first angle between the second surface 82 and the front side of the second panel 1 ′ is larger than the second angle between the fourth surface 84 and front side. The first surface of the displaced tongue is configured to interact with the second surface of the groove under the tongue at the first load on the mechanical locking system. The third surface of the displaced tongue is configured to interact with the fourth surface of the tongue groove under a second load on the mechanical locking system. The first load corresponds to the load under normal conditions, and the second load corresponds to an increased load when, for example, on the first or second panel are a chair, sofa or bookcase. In FIG. 14A-14B show a mechanical locking system under a first load. The first angle may give the advantage that a slight offset of the displaced tongue pushes the first and second panels together to the desired locking position, in which the front side of the second panel 1 'is essentially in the same vertical position as the front side of the first panel 1. The second angle may give the advantage that the third and fourth surfaces are able to carry a large load and prevent the pushing tongue from being pushed out of the first groove under the tongue. The first angle may be in the range of from about 30 ° to about 45 °, and the second angle may be in the range of from about 10 ° to about 25 °. The difference between the first and second angles may be in the range of from about 10 ° to about 35 °. The outer part of the biased tongue 30 is preferably provided with a recess 31 described above, and the tongue groove preferably has a lower height and depth than the bias groove.
1. A set of essentially identical panels (1, 1 '), such as building panels, equipped with a mechanical locking system comprising a sliding tongue (30) located in a groove (40) for displacement on the first edge of the first panel (1), and the first groove (20) under the tongue on the second edge of the adjacent second panel (1 '), while the displaced tongue is configured to interact with the first groove (20) under the tongue to lock the first and second edges in the vertical direction, in which the groove is for offset forms the first hole, and the first kana ka under the tongue forms a second hole, while at least a portion of the displaced tongue is pushed into the groove for displacement during assembly of the first and second panels, and springing into a position in which the outer part of the displaced tongue interacts with the first groove under the tongue to lock in the vertical direction, characterized in that the height (41) of the first hole is greater than the height (21) of the second hole, while the outer part (38) of the displaced tongue is made with a recess (31) located on the lower edge e of the displaced tongue, the upper surface of the displaced tongue is displaceable along the upper wall of the groove for displacement during assembly of the first and second panels, the lower surface of the displaced tongue is displaced along the lower wall of the groove for displacement during assembly of the first and second panels, the recess passes along substantially the entire longitudinal length of the tongue to be displaced, the recess (31) comprises a first recess surface (81) and a second recess surface (85) that are at an obtuse angle d yz other, and the first surface (81) recesses (31) adapted to engage with the first groove under the tongue for locking in the vertical direction.
2. The kit according to claim 1, in which the first hole and the second hole are open horizontally, while the height (41) of the first hole is a vertical height, and the height (21) of the second hole is a vertical height.
3. The kit according to claim 1 or 2, in which the maximum height of the groove (42) for offset is greater than the maximum height of the first groove under the tongue.
4. A kit according to any one of claims 1 to 3, in which the angle between the upper surface of the displaced tongue and the first surface (81) of the recess is in the range from about 5 to about 15 °, preferably in the range from about 7 to about 8 °.
5. A kit according to any one of the preceding paragraphs, in which the thickness of the panels is in the range from about 3 to about 10 mm, and preferably in the range from about 4 to about 8 mm.
6. Kit according to any one of the preceding paragraphs, in which a mechanical locking system
- 8 032211 contains a first locking strip (6) on the first or second edge, provided with a first locking element (8) configured to interact for horizontal locking with the first locking groove (14) on the other of the first or second edges.
7. The kit according to claim 6, in which the first locking strip is located on the first edge, and the outer and lower parts of the biased tongue (30) are provided with a recess (31).
8. The kit according to claim 6 or 7, in which the panels are rectangular, and the mechanical locking system comprises a second locking strip (16) on the third or fourth edge, equipped with a second locking element (18) configured to interact for horizontal locking with the second a locking groove (24) on the other of the third or fourth edges of the adjoining third panel (1 '' ').
9. The kit of claim 8, in which the first upper surface (9) of the first locking strip is located in the same plane (60) as the second upper surface (19) of the second locking strip.
10. The kit of claim 8 or 9, in which the mechanical locking system on the third and fourth edges is made with the possibility of assembly by angular movement.
11. A kit according to any one of the preceding paragraphs, in which the mechanical locking system on the first and second edges is configured to be assembled in a vertical movement.
12. A kit according to any one of the preceding claims, wherein the panels are flooring panels containing a core based on wood fiber, such as high density fiberboard, or a core containing thermosetting plastic such as PVC.
EA201690068A 2013-06-27 2014-06-26 Set of building panels with a mechanical locking system EA032211B1 (en)
EA201690068A1 EA201690068A1 (en) 2016-05-31
EA032211B1 true EA032211B1 (en) 2019-04-30
MX (1) MX2015017657A (en)
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