Search

CN-111655949-B - Panel

CN111655949BCN 111655949 BCN111655949 BCN 111655949BCN-111655949-B

Abstract

The invention relates to a panel (1) having at least one first edge pair of complementary form-locking retaining profiles (6, 7) on mutually opposite panel edges, one (6) of the retaining profiles having a locking groove (8) with a retaining strip (12) which projects on the free end of a lower groove wall (11) in the direction of the panel surface (4), the complementary retaining profile (7) being provided with a locking spring (9) which in the engaged state interacts with a retaining surface (12 b) of the retaining strip (12) and has a gap which comprises a height gap (Q) and a horizontal gap (P, P '), so that the retaining profiles (6, 7) can be moved perpendicularly to the panel surfaces (4, 4') and simultaneously in a direction parallel to the panel surfaces (4, 4 '), in which the spring underside (9 a) of the locking spring (9) can be placed horizontally on the retaining strip (12) of the locking groove (9) and then the spring underside (16) can be moved against the inner side (10 a) of the inner groove wall (10) of the panel (10) in an inwardly facing region (10 a) of the inner groove wall (10').

Inventors

  • H-J. Hannish
  • SCHAEFERS ELMAR DR

Assignees

  • 表面技术有限责任两合公司

Dates

Publication Date
20260505
Application Date
20181123
Priority Date
20171124

Claims (17)

  1. 1. A panel (1) has a panel core (3, 3 '), a panel surface (4, 4'), a lower panel surface (5) and a complementary, form-locking retaining profile (6 7) Wherein one of the retaining profiles (6) has a locking groove (8) with an upper groove wall (10) protruding distally and a lower groove wall (11) protruding distally farther than the upper groove wall (10) and with a retaining strip (12) protruding at the free end of the lower groove wall (11) in the direction of the panel surface (4) and having a free upper strip end (12 a) and at least one undercut retaining surface (12 b), wherein the retaining surface is oriented towards the panel core (3) and delimits one of the lower groove walls (11), A recess (11 a) located behind the retaining strip, wherein the complementary retaining profile (7) is provided with a locking spring (9) having at least one undercut abutment surface (15) which is oriented towards the panel core (3') and interacts with a retaining surface (12 b) of the retaining strip (12) in the assembled state, wherein the locking spring (9) has a spring underside (9 a) and a spring upper side (16), wherein the spring upper side (16) has a distal end (16 a) and a proximal end (16 b) and is linear or curved and is in relation to the panel surface (4), 4 ') is arranged obliquely so that the distal end (16 a) is farther from the panel surface (4, 4 ') and the proximal end (16 b) reaches the panel surface (4, 4 ') more closely, wherein in the assembled state a gap is present, which gap comprises a height gap (Q) and a horizontal gap (P, P '), so that the retaining profile (6, 7) is movable perpendicular to the panel surface (4, 4 ') and in a direction perpendicular to the panel edges (2, 2 ') and simultaneously parallel to the panel surface (4, 4 '), wherein the inner side (10 a) of the upper groove wall (10) is shaped linearly or curvilinearly in adaptation to the spring upper side (16) and is movable relative to the panel surface (4), 4') has an inclination angle α which enables the inclined spring upper side (16) and the inner side (10 a) of the upper groove wall (10) to touch in a downward manner in the state of being moved toward each other, characterized in that the retaining profile (6, 7) is configured such that the spring lower side (9 a) of a new panel can rest on the retaining strip (12) of the placed panel, and the retaining profile (6, 7) can then be moved toward each other by a movement of the new panel in a direction parallel to the panel plane, so that the panel edges can be locked almost horizontally, i.e. in the panel plane, a chamfer (12 c) is provided between the free upper strip end (12 a) of the retaining strip (12) and the retaining surface (12 b) of the lower part of the retaining strip, wherein the chamfer forms a free surface (12 d) with a distal upper end (12 e) and a proximal end and being shaped linearly or in a curved surface (12 d) relative to the panel surface (4), 4 ') has an inclination angle β, provided that in the splicing step the spring underside (9 a) of the locking spring (9) can be placed horizontally on the retaining strip (12) of the locking groove (8) and then the spring upper side (16) can be moved toward the inner side (10 a) of the upper groove wall (10), and that at the end of the splicing step mentioned the distal end (16 a) of the spring upper side (16) in the region of the panel core (3') touches the inner side (10 a) of the upper groove wall (10).
  2. 2. Panel according to claim 1, characterized in that a chamfer is provided between the spring underside (9 a) and the undercut abutment surface (15), which chamfer has a cross section which is at least 50% smaller than the chamfer (12 c) of the retaining strip (12).
  3. 3. Panel according to claim 1 or 2, characterized in that the height (T) of the free surface is ≡the height (S) of the retaining surface of the retaining strip (12).
  4. 4. A panel according to any one of claims 1 to 3, characterized in that the distal end (16 a) of the upper side (16) of the spring is located in the spliced state at a level between the free upper strip end (12 a) of the retaining strip (12) and the proximal end of the free face (12 d), or above the free strip end (12 a) by an amount corresponding to the height (T) of the free face.
  5. 5. Panel according to any one of claims 1 to 4, characterized in that the spring underside (9 a) is provided with a sliding surface which is arranged parallel to the panel surface (4') and which in the assembled state rests on a sliding region in the recess (11 a) of the lower groove wall (11), wherein the sliding region is arranged in that respect parallel to the panel surface (4).
  6. 6. Panel according to any one of claims 1 to 5, characterized in that the retaining strip (12) forms a bearing surface (12 f) on which the spring underside (9 a) can rest at least during the splicing process, and in that the locking spring (9) has a recess (14) open towards the lower panel surface (5) with a base surface (14 a).
  7. 7. The panel according to claim 6, characterized in that the bearing surface (12 f) of the retaining strip (12) and the base surface (14 a) of the recess (14) are parallel to each other and touch each other in the joined state, such that the bearing surface and the base surface act as sliding surfaces parallel to the panel surfaces (4, 4 ') under the framework of the existing gap (P, P').
  8. 8. Panel according to any one of claims 1 to 7, characterized in that the maximum height gap (Q) is in a proportional relationship Q/S with respect to the height (S) of the retaining surface (12 b) when the undercut retaining surface (12 b) of the locking groove (11) and the undercut abutment surface (15) of the locking spring (9) are in contact, the proportional relationship being in the range of 0.5-2.0, preferably in the range of 0.8-1.2.
  9. 9. -Panel according to any of the claims 1 to 8, characterized in that the inclination angle a of the inner side (10 a) of the upper groove wall (10) with respect to the perpendicular (L) on the panel surface (4, 4') lies in the range of 30 ° to 60 °.
  10. 10. The panel according to any one of claims 1 to 9, characterized in that the free face (12 d) of the retaining strip (12) is inclined by a free angle β with respect to a perpendicular (L) on the panel surface (4, 4'), and in that the free angle β is ≡ inclination angle α.
  11. 11. The panel according to claim 10, wherein the free angle β is in the range of 1.0 to 1.5 times the tilt angle α.
  12. 12. Panel according to any one of claims 1 to 11, characterized in that a distal second holding surface (23) oriented towards the panel core (3, 3') is provided on the holding strip (12), and the locking spring (9) has a proximal second abutment surface (24) adapted thereto.
  13. 13. The panel according to claim 11, characterized in that the second retaining surface (23) of the retaining strip (12) is arranged on a distal end of the free surface (12 d).
  14. 14. Panel according to any one of claims 1 to 13, characterized in that the panel surface (4, 4') has a chamfer (18) at least on the side of the locking groove (11) or on the side of the locking spring (9).
  15. 15. Panel according to any one of claims 1 to 14, characterized in that the panel (1, 32, 33, 34, 35) is of quadrangular construction and has a second edge pair, which is provided with complementary retaining profiles on mutually opposite panel edges, wherein the retaining profiles are identically configured to the retaining profiles (6, 7) of the first edge pair.
  16. 16. Method for laying and locking a panel of the type according to any one of claims 1 to 14, characterized in that the spring underside (9 a) of a new panel is placed on a retaining strip (12) of the panel already placed on the base and then the new panel placed in the panel plane is moved perpendicularly to the panel edges (2, 2') towards the placed panel until the spring underside (9 a) of the new panel exceeds the retaining strip (12) of the placed panel and sinks downwards into a recess (11 a) located behind the retaining strip (12).
  17. 17. A method for laying and locking a panel of the type according to claim 15, characterized in that a new quadrangular panel (32) of the type having two identical edge pairs is placed in a second panel row (D2) against the already existing panels (33, 34) of the first panel row (D1) and simultaneously against the already existing panels (35) in the second row in such a way that the new panel (32) is placed with the spring underside of the locking spring (32 b) against the retaining strips (33D, 34D) of the panels (33, 34) of the first panel row (D1) and with the spring underside of the adjacent locking spring (32 a) of the new panel against the retaining strips (35 c) of the already existing panels (35) in the second row, and that the new panel (32) is then moved in the diagonal direction, whereby the two adjacent locking springs (32 a, 32 b) of the new panel simultaneously engage, i.e. the spring (32 b) is placed with the spring underside of the retaining strips (33D, 34 b) of the first panel row (D1) and the other spring (32 b) is placed with the retaining strips (33D) of the other panel row (32 b) which engages against the retaining strips (32D) of the retaining strips (33D) of the other panel (32 b) already present in the second row (32 b) of the panel row (32 b) is placed against the retaining strips (33 b) of the panel (34 b) of the panel (b, 34 b is placed on the panel already in the panel, 35c) And sunk into the pockets respectively behind the retaining strips.

Description

Panel Technical Field The invention relates to a panel having a panel core, a panel surface, a lower panel surface and at least one first edge pair having complementary form-locking retaining contours on mutually opposite panel edges, wherein one of the retaining contours has a locking groove having an upper groove wall protruding distally and a lower groove wall protruding further distally than the upper groove wall and having a retaining strip protruding on the free end of the lower groove wall in the direction of the panel surface and having a free upper strip end and at least one undercut retaining surface, wherein the retaining surface is oriented toward the panel core and delimits a recess in the lower groove wall behind the retaining strip, wherein the complementary retaining contour is provided with a locking spring having at least one undercut abutment surface which is oriented toward the panel core and cooperates with the retaining surface of the retaining strip in the engaged state, wherein the locking spring has a spring lower side and a spring upper side, wherein the spring upper side has a distal end and a proximal end and is linear or is inclined with respect to the panel surface and is arranged at a distance from the panel surface in the direction of the linear or the linear upper side and is capable of moving in the direction of the linear or the linear upper side and the linear side is inclined with respect to the panel surface, wherein the complementary retaining profile is capable of moving in the horizontal direction and the linear or the linear upper side is located at a distance from the upper surface of the linear or the linear upper side and the linear side is located at a distance from the upper surface, and the linear surface is capable of being displaced, the inclination angle is such that the inclined spring upper side and the inner side of the upper groove wall touch in a state of being moved toward each other. Background Such prior art is known from DE 10 2014 114 250 A1. The document proposes a panel which is provided with a spring upper side inclined from the vertical and which, in the assembled state, has a gap inside the form-locking means. Due to the play, the mutual insertion and locking is somewhat simpler than in panels with form-locking means without play. Furthermore, due to the gap, the panels are suitable for use in floorings which are laid floatingly. In the case of floating installations, it is to be considered that the panels are constantly subjected to changes in environmental conditions, such as changes in temperature and air humidity. This change in environmental conditions results in a contraction or expansion of the panels which can be balanced by the gap inside the split locking device. The same applies for the panels provided as wall baffles/wall planks. The term "horizontal gap" relates to the horizontal application of the panels for floors. The gap, which is called a horizontal gap, can no longer be oriented horizontally in the wall planks, but is also advantageous here, since it can compensate for the shrinking or stretching action of the panels. In practice, the panels known from DE 10 2014 114 250 A1 are preferably used for thin floor or wall coverings, wherein the technology discards panel cores made of HDF or MDF (as is usual in laminated panels). Instead, panel cores for thin panels are in practice manufactured from plastic materials or from composite materials which are made from plastics which are fibre-reinforced and/or which comprise further fillers. Usually the locking devices must be produced accurately, whereby they fit into each other and they must also maintain their shape stability. The material of the panel core is exposed and unprotected here at the form-locking means. The thinner the panel, the more difficult it is to maintain shape stability. A small disadvantage may already result in the locking devices no longer being mutually adapted. Because panels with form-locking means are fragile, they must be handled carefully once they are removed from the package. In rough operating modes on construction sites, there is then always a risk of damage to the locking device. As mentioned, the known panels are preferably manufactured with a panel core made of plastic and generally have a smaller overall thickness than, for example, common laminated panels with a panel core made of MDF or HDF. Known panels with panel cores made of plastic are also manufactured in large numbers, for example in the format of 40 x 80cm or even 40 x 120 cm. In this case, the thinnest panels are now produced such that their total thickness is only 3.2mm. The handling of such large panels is problematic because when the panel is lifted by the operator from the base at one end and the locking means is to be positively engaged at the other end, a long lever is produced, wherein the base can be a floor as well as a wall. It is difficult to engage small form-locking means