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CN-122029330-A - Mechanical locking device for building panels

CN122029330ACN 122029330 ACN122029330 ACN 122029330ACN-122029330-A

Abstract

A set of building panels (1, 1',1 "), such as floor panels, comprises similar or substantially identical building panels (1, 1', 1"). Each building panel (1, 1',1 ") has a first mechanical locking device (10) configured to lock a first edge (2 a) of one building panel (1, 1', 1") horizontally and vertically to a second edge (2 b) of an adjacent building panel (1, 1',1 "), wherein the first edge (2 a) and the second edge (2 b) are preferably long edges of the building panels (1, 1', 1"), and a second mechanical locking device (10 ') configured to lock a third edge (2 c) of one building panel (1, 1',1 ") horizontally and vertically to a fourth edge (2 d) of an adjacent building panel (1, 1', 1"), wherein the third edge (2 c) and the fourth edge (2 d) are preferably short edges of the building panels (1, 1',1 "). Each mechanical locking device (10, 10') comprises a locking strip (15) comprising a locking element (16) configured to cooperate with a locking groove (32). Each locking element (16) has an impact surface (22) and each locking groove includes an impact surface (38).

Inventors

  • A. NELSON

Assignees

  • 瓦林格创新股份有限公司

Dates

Publication Date
20260512
Application Date
20241011
Priority Date
20231013

Claims (17)

  1. 1. A set of building panels, such as floor panels, comprising similar or substantially identical building panels, wherein each building panel (1, 1',1 ") comprises a first mechanical locking device (10) configured to lock a first edge (2 a) of one building panel (1, 1', 1") horizontally and vertically to a second edge (2 b) of an adjacent building panel (1, 1',1 "), wherein the first edge (2 a) and the second edge (2 b) are preferably long edges of the building panel (1, 1', 1"), and a second mechanical locking device (10 ') configured to lock a third edge (2 c) of one building panel (1, 1',1 ") horizontally and vertically to a fourth edge (2 d) of an adjacent building panel (1, 1', 1"), wherein the third edge (2 c) and the fourth edge (2 d) are preferably short edges of the building panel (1, 1',1 "), Wherein each mechanical locking means (10, 10') comprises a locking strip (15) at one of the first (2 a) and second (2 b) edges and at one of the third (2 c) and fourth (2 d) edges, the locking strip extending from the respective edge in a direction away from the respective edge, Wherein each locking strip (15) comprises at its outermost portion a locking element (16) extending in a direction perpendicular to the direction of extension of said locking strip (15), Wherein each locking element (16) is configured to cooperate with a locking groove (32) arranged in the other of the first edge (2 a) and the second edge (2 b) and in the other of the third edge (2 c) and the fourth edge (2 d) such that adjacent building panels (1, 1',1 ") are locked in the horizontal direction in the assembled position, Wherein each locking element (16) comprises an impact surface (22) extending from an outer surface (20 b) of the locking element (16) at an acute angle (beta) with respect to a horizontal plane in a direction towards a rear face (6 b) of the building panel (1, 1',1 "), Wherein each locking groove (32) comprises an impact surface (38) extending from an inner surface (36 b) of the locking groove (32) at an acute angle (phi) with respect to the horizontal plane in a direction towards the rear face (6 b) of the building panel (1, 1 ') and being configured to cooperate with the impact surface (22) of the locking element (16) in an assembled position when a force acting at least partly in a vertical direction is applied to at least one of the building panels (1, 1'), Wherein the first mechanical locking device (10) and the second mechanical locking device (10 ') are configured to be assembled together by a pivoting movement or by a snap-fit assembly by a substantially horizontal displacement of building panels (1, 1',1 ") assembled to adjacent building panels (1, 1', 1").
  2. 2. The set of building panels as claimed in claim 1, wherein the impact surface (22) of the locking element (16) is arranged at an acute angle (β) in the range of 40 ° to 70 ° with respect to the horizontal plane.
  3. 3. The set of building panels as claimed in claim 1 or 2, wherein the impact surface (38) of the locking groove (32) is arranged at an acute angle (Φ) in the range of 40 ° to 70 ° with respect to the horizontal plane.
  4. 4. A set of building panels as claimed in any one of claims 1-3, wherein the impact surface (22) of the locking element (16) is substantially parallel to the impact surface (38) of the locking groove (32).
  5. 5. A set of building panels as claimed in any one of claims 1-3, wherein the impact surface (22) of the locking element (16) is not parallel to the impact surface (38) of the locking groove (32).
  6. 6. The set of building panels as claimed in any one of the preceding claims, wherein the building panels (1, 1',1 ") have a thickness in the range of 3-6 mm.
  7. 7. The set of building panels as claimed in any one of the preceding claims, wherein the building panels (1, 1',1 ") have a thickness in the range of 3-4.5 mm and the impact surface (22) of the locking element (16) is arranged at an acute angle (β) in the range of 40-60 ° with respect to the horizontal plane.
  8. 8. The set of building panels as claimed in any one of claims 1-6, wherein the building panels (1, 1',1 ") have a thickness in the range of 4.5-6 mm and the impact surface (22) of the locking element (16) is arranged at an acute angle (β) in the range of 40-70 ° with respect to the horizontal plane.
  9. 9. The set of building panels as claimed in any one of the preceding claims, wherein the locking element (16) further comprises a locking surface (18), the locking surface (18) being configured to cooperate with a locking surface (34) of the locking groove (32) in which the locking element (16) is arranged in an assembled position.
  10. 10. The set of building panels as claimed in claim 9, wherein the locking surface (18) of the locking element (16) is substantially parallel to the locking surface (34) of the locking groove (32).
  11. 11. The set of building panels as claimed in claim 9 or 10, wherein the locking surface (18) of the locking element (16) is arranged at an acute angle (a) in the range of 40 ° to 60 °, preferably about 50 °, with respect to the horizontal plane.
  12. 12. The set of building panels as claimed in any one of the preceding claims, wherein the mechanical locking device (10, 10') further comprises an upper locking tongue (27) extending from the respective edge at one of the first edge (2 a) and the second edge (2 b) and at one of the third edge (2 c) and the fourth edge (2 d) in a direction away from the respective edge, the upper locking tongue being configured to be received in and cooperate with an upper tongue groove (42) arranged in the other of the first edge (2 a) and the second edge (2 b) and in the other of the third edge (2 c) and the fourth edge (2 d).
  13. 13. The set of building panels as claimed in claim 12, wherein the height (h 1) of the upper locking tongue (27) is larger than the height (h 2) of the upper tongue groove (42) in order to form a Tight Seal (TS) between adjacent building panels (1, 1',1 ").
  14. 14. The set of building panels as claimed in claim 13, wherein the difference between the height (h 1) of the upper locking tongue (27) and the height (h 2) of the upper tongue groove (42) is in the range of 0.01-0.2 mm, or in the range of 0.01-0.1 mm, or in the range of 0.01-0.05 mm.
  15. 15. The set of building panels as claimed in any one of the preceding claims, wherein at least the base plate (7) of the building panel (1, 1',1 ") comprises a thermoplastic material, preferably the base plate (7) comprises 10-50wt.% or preferably 20-40wt.% thermoplastic material.
  16. 16. The set of building panels as claimed in any one of the preceding claims, wherein each building panel (1, 1',1 ") comprises a single layer of base plate (7), wherein the impact surface (22) of the locking element (16) and the impact surface (38) of the locking groove (32) are arranged in the base plate (7).
  17. 17. The set of building panels as claimed in any one of the preceding claims, wherein the first mechanical locking device (10) and the second mechanical locking device (10') are of the same type of locking device.

Description

Mechanical locking device for building panels Technical Field The present application relates to the field of building panels, such as floor panels, wall panels, furniture parts or the like. More particularly, the application relates to the field of mechanical locking devices for such building panels. Background Building panels, such as floor panels, may often comprise mechanical locking means for assembling the building panels with similar or substantially identical building panels such that the building panels are locked together in the assembled position. The mechanical locking means may lock adjacent building panels in a horizontal and/or vertical direction. For applications or material choices, for example for luxury vinyl tile (LVT tile), stone plastic (polymer) composite board or solid polymer core board (SPC board), or expanded polymer core board (EPC board), also known as waterproof core board or wood plastic composite board (WPC board), it may be advantageous to use a mechanical locking device that is formed in one piece with the floor panel. Such locking systems are described in publications WO 2021/20661 or WO 2023/106988 and provide a secure locking of the panels and a quick and simple installation of the panels. It has been found that mechanical locking means for this type of installation and for this type of building panels or the like can be improved when, for example, subjected to vertical pressure. Accordingly, there is room for improvement in the art. US 20170254096 A1 discloses a panel with a long side locking system forming a sliding locking system on the long side. The three sets of mating locking surfaces are configured to provide a strong press fit between the locking element and the locking groove. Thus, the panels may be tightly fixed to each other, thereby preventing displacement along the long sides. US 20170067261A1 discloses a panel with complementary locking mechanisms of a second pair of edges, which are joined to each other by a downward vertical movement. In one example, the locking mechanism includes a lower latch mechanism that includes a female latch element and a male latch element. Disclosure of Invention It is an aim of embodiments of the present invention to provide improvements over the known art. In a first aspect of the invention a set of building panels, such as floor panels, is provided comprising similar or substantially identical building panels, wherein each building panel comprises a first mechanical locking device configured to lock a first edge of a building panel to a second edge of an adjacent building panel horizontally and vertically, wherein the first edge and the second edge are preferably long edges of the building panel, and a second mechanical locking device configured to lock a third edge of a building panel to a fourth edge of an adjacent building panel horizontally and vertically, wherein the third edge and the fourth edge are preferably short edges of the building panel. Each mechanical locking means comprises a locking strip extending from the respective edge at one of the first and second edge and at one of the third and fourth edge in a direction away from said edge, wherein each locking strip comprises a locking element at its outermost portion, which locking element extends in a direction perpendicular to the direction of extension of the locking strip. Each locking element is configured to cooperate with a locking groove arranged in the other of the first and second edges and the other of the third and fourth edges such that adjacent building panels are locked in the assembled position in the horizontal direction. Each locking element comprises an impact surface extending from an outer surface of the locking element towards the back side of the building panel at an acute angle relative to the horizontal plane. Furthermore, each locking groove comprises an impact surface extending from an inner surface of the locking groove towards the back side of the building panel at an acute angle with respect to the horizontal plane and configured to cooperate with the impact surface of the locking element in the assembled position when a force acting at least partly in the vertical direction is applied to at least one building panel. The force acting at least partly in the vertical direction may be a force generated by a load exerted on the building panels in the assembled position. During normal use, for example when installed in a room, this force may act on the at least one building panel in the assembled position. The force may be applied on a back side of at least one building panel opposite to a back side of said at least one of the building panels. Each first mechanical locking means and each second mechanical locking means may comprise a locking strip at one of the first and second edges and at one of the third and fourth edges, the locking strip extending from the respective edge in a direction away from the respective edge. Each first mech