DE202006007411U1 - Tongue and groove flooring panel has curved tongue and groove surfaces with flattened areas to reduce strain during assembly - Google Patents

Abstract

The tongue and groove flooring panel (1) has a tongue (2) which fits into a groove (3) in the opposing edge of a similar adjacent panel. The tongue has a curved lower face (4) with a flat (10) on it. The groove is defined by a flange (5) with a corresponding concavity (17) to receive the tongue, also with a flat (18).

Description

The The invention relates to a panel, in particular for glueless laying of laminate flooring, consisting from a rectangular panel of wood-based material with on opposite Edges provided profiles of a tongue and groove connection with at least an undercut, wherein at the bottom of the spring a projecting, convex arched Range and at the top of the lower groove cheek a corresponding Trough is provided.

panels of the type mentioned are by angling their profiles together connected. The convex arched The area of the spring slides in the correspondingly concave area the top of the lower groove cheek in the manner of a hinge. In the surface The sliding parts are often depressions for formation provided by so-called dust chambers, in which the abrasion the surfaces should collect. These depressions often complicate the Einwinkelvorgang as well a good fit of the connecting parts.

Of the Invention is based on the object, the profiles of the tongue and groove connection be designed so that the process of Einwinkelns is optimized and that nevertheless sufficient space remains for dust chambers.

According to the invention this Task solved by that on that side of the convexly arched portion of the spring, the facing away from the free end of the spring, a recess in the surface and / or in the top of the lower groove cheek on the free groove cheek end facing side a recess is provided.

at this construction according to the invention can the convex curvature remain fully preserved in the front area of the spring underside and slides in the form-fitting angle in the appropriately trained Trough of the top of the lower groove cheek. This can be an optimal Angling the profiles done without the continuous curvature of the Profile is disturbed in the active area required for the angle. A first dust chamber can in a conventional manner between the front free end of the spring and the rear groove end present stay while a second dust chamber between those areas of the spring and groove parts, which only immediately before completion of the Einwinkelvorgangs in contact with each other come.

Preferably becomes the in the spring surface provided recess by a flattening of the arched area the spring formed. Such a flattening can be manufacturing technology easy to manufacture and does not form in said profile area impurity for the Einwinkelvorgang.

Of the convex arched Area of the spring can be formed substantially circular arc be, with the depression, seen in cross section, from the bottom Vertex of the arched Range extends from the free end of the spring away.

Preferably the flattening has the shape of a secant in cross section, through which a segment of the circular Profile is cut off.

The Secant runs appropriate at an angle from about 100 ° to 110 ° to the Vertical, preferably at an angle of 106 °. Thereby is guaranteed that is the rear area adjacent to the flat the spring in the connected state of the profiles in the concave depression the groove applies and a good connection of the profiles in horizontal Direction causes.

The second dust chamber can also be formed by additionally or only one Recess is formed in the top of the lower groove cheek. Preferably, this is on the upper side of the lower groove cheek provided trough substantially circular arc-shaped, while the trained in this, additional Deepening, seen in cross-section, from the lower vertex the trough from the free end of the groove cheek extends.

The Deepening is expedient in cross section circular arc is formed, wherein the radius of the recess is smaller than that the hollow is.

The The invention is illustrated in the drawing by an embodiment and described in detail below with reference to the drawings:

It demonstrate:

1 the profiles of two opposing plate edges to be joined together,

2 a state during the angle of the profiles and

3 the finished interconnected profiles.

The panels according to the invention each consist of a rectangular plate 1 made of wood-based material, preferably made of MDF or HDF material. At opposite edges is the respective plate 1 equipped with profiles of a spring-groove connection, being on one side of the plate 1 the feather 2 and on the other side of the plate 1 the groove 3 is trained.

The plates should be laid glueless in a conventional manner and thereby provide an intimately firm cohesion not only in the vertical direction but also in the horizontal direction. This is achieved by a corresponding undercut provided on the profiles. It is at the bottom of the spring 2 a projecting, convexly curved area 4 provided with one on the upper side of the lower groove cheek 5 provided trough 6 comes to the intervention. The hollow 6 is according to the configuration of the convexly curved area 4 the spring corresponding concave arched.

In the construction shown in the drawing, the lower groove cheek 5 a piece opposite the upper groove cheek 7 in front. While the concave curvature of the trough 6 the groove up to the upper groove cheek 7 extends, is the front end of the spring 2 through a vertical section 8th shortened so that in the finished connected state of the plates 1 in the inner area of the groove 3 a dust chamber 9 arises.

On the side of the convex arched area 4 the feather 2 that the free, with the vertical section 8th provided end of the spring 2 is turned away, is a depression 10 provided in the form of a flattening.

The convex arched area 4 the feather 2 is formed in cross-section substantially circular.

In 1 The drawing is a vertical line 11 entered exactly through the lower vertex 12 of the convex arched area 4 the spring runs.

As in particular from 1 can be seen, the flattening extends from the lower vertex 12 of the arched area 4 from the free spring end away obliquely upwards. In cross section, this flattening has the shape of a secant, that is, at this point of the circular arched area 4 the feather 2 a circle segment is milled away.

In the embodiment shown in the drawing, the secant forms to that through the lower vertex 12 the feather 2 running vertical line 11 an angle 16 of about 106 °.

As in particular from 3 shows, due to this structural design between the flattening and the groove bottom 13 a second dust chamber 14 formed to absorb the remaining abrasion that is not in the after angle between the vertical section 8th at the spring end and the Nutende resulting dust chamber 9 arrives, can serve.

As in particular from 2 shows, lies during the Einwinkelvorgangs the surface 15 of the convex arched area 4 over its length between the lower vertex 12 and through the vertical section 8th formed front spring end fully on the concave arched groove bottom 13 on, so that a gentle, positively guided angle of the profile parts can be done. The at the rear end of the groove 2 provided flattening lies during the angle in an inactive region of the spring, so that thereby the Einwinkelvorgang is not adversely affected. Due to the formation of the flattening is that person's area of the spring, which must be inserted to connect two plates through the slot opening, slightly narrower, thereby facilitating the insertion of the spring into the groove.

As an alternative to this embodiment, it is also possible, exclusively or additionally, in the upper side of the lower groove cheek 5 a depression 18 provide, in the assembled state of the panels either alone the second dust chamber 14 or together with the depression formed by the flattening 10 the feather 2 the second dust chamber 14 forms.

In 1 is in the area of the groove 3 the same vertical line 11 registered as in the area of the spring 2 , In the assembled state, the two lines 11 congruent as in 3 can be seen.

The line 11 through the groove area runs exactly through the lower vertex 17 in the lower groove cheek 5 provided trough 6 , The hollow 6 is formed substantially circular arc-shaped.

The one in the hollow 6 trained deepening 18 extends, seen in cross-section, from the lower vertex 17 the hollow 6 out to the free end of the groove cheek 5 out. The depression 18 is also approximately circular arc-shaped in cross-section, but the radius of the recess 18 much smaller than that of the trough 6 ,

1

plate

2

feather

3

groove

4

arched area the feather

5

lower cheek

6

trough

7

upper cheek

8th

vertical section

9

first dust chamber

10

deepening

11

vertical line

12

lower Vertex of the spring

13

groove base

14

second dust chamber

15

Surface of the domed range

16

angle

17

lower Vertex of the trough of the lower groove cheek

18

deepening

Claims (8)

Panel, in particular for glue-free laying of laminate flooring, consisting of a rectangular panel ( 1 ) of wood-based material with provided on opposite edges profiles of a tongue and groove connection with at least one undercut, wherein at the bottom of the spring ( 2 ) a projecting, convexly curved area ( 4 ) and on the upper side of the lower groove cheek ( 5 ) a corresponding trough ( 6 ), characterized in that on that side of the convexly curved region ( 4 ) the feather ( 2 ), the free end of the spring ( 2 ), a depression ( 10 ) in its surface and / or in the top of the lower groove cheek ( 5 ) on the side facing the free Nutwangenende a recess ( 18 ) is provided. Panel according to claim 1, characterized in that the recess ( 10 ) in the arched area ( 4 ) the feather ( 2 ) is formed by a flattening. Panel according to claim 1 or 2, characterized in that the convexly curved area ( 4 ) the feather ( 2 ) is formed in cross-section substantially circular arc-shaped and that the recess ( 10 ), viewed in cross section, from the lower vertex ( 12 ) of the arched area ( 4 ) extends away from the free spring end. Panel according to claim 2 or 3, characterized that the flattening in cross section has the shape of a secant. Panel according to claim 4, characterized in that the secant is at an angle ( 16 ) from about 100 ° to 110 ° to the vertical ( 11 ) runs. Panel according to claim 5, characterized in that the secant is at an angle of about 106 ° to the vertical ( 11 ) runs. Panel according to one of claims 1 to 6, characterized in that at the top of the lower groove cheek ( 5 ) provided trough ( 6 ) is formed substantially circular arc-shaped and that the recess ( 18 ), viewed in cross section, from the lower vertex ( 17 ) of the trough ( 6 ) from the free end of the groove cheek ( 5 ) extends. Panel according to claim 7, characterized in that the recess ( 18 ) is formed in a circular arc in cross-section, wherein the radius of the recess ( 18 ) smaller than the trough ( 6 ).