DE202019101603U1 - Detachable connection of building panels for the installation of a mosaic surface covering - Google Patents

Abstract

A releasable connection (10; 10 '; 10 ") of at least two panel-shaped building panels (1, 2) to one another for mounting a mosaic surface covering (100), of which both the first building panel (1) and the second building panel (2) have lateral connection profiles (3, 4; 5, 6) which, when laid, mesh with one another on a substrate (20) in such a way that the laid building panels (1, 2) are vertical both in a laying plane (E) and in a laying plane (E) Direction (Z) are secured against shifts to each other,
in that the connecting profile (3) has a profiled groove (11) and a locking arm (16) projecting beyond an abutment edge (13), whereas the connecting profile (4) opposite the connecting profile (3) has a spring (12) compatible with the groove (11) ),
wherein the profiled groove (11) of the connecting profile (3) comprises a trapezoidal groove (14) recessed from the abutment edge (13), the groove flank (15) of which transitions stepwise into the abutting edge (13) via a step (17),
wherein in the trapezoidal groove (14) in the installed state of the building panels (1) protrudes a projection (18) of the connecting profile (4),
wherein the remaining mutually parallel connecting profiles (5, 6) are mirror-symmetrical to each other such that on the connecting profile (5, 6) via a abutment edge (19) projecting projection (25) is arranged, which in the installed state of the building panels (1 , 2) in one of the spring (12) lying, opposite to the abutment edge (19) recessed groove (21) engages or against a between the abutment edge (19) and the step (17) lying step (22) presses, so that the connection (10; 10 ', 10 ") in direction ( Z) is lockable.

Description

The invention relates to a detachable connection of at least two plate-shaped building panels with each other for mounting a mosaic surface covering, of which both the first building panel and the second building panel include lateral connection profiles which mesh when laid on a substrate.

A detachable connection of the plate-shaped building panels for mounting a mosaic floor is in US 17 87 027 shown. The construction panels forming a herringbone pattern each have four simple tongue and groove profiles, which are not incorporated all over the circumference, and require left and right hand design. With the connection no satisfactory locking of the building panels can be achieved in laying level. In addition, joints of varying width may occur when using the parquet. When laying such a floor covering, the unwanted distances must always be corrected and eliminated.

The object of the invention is to design a plate-shaped building panel for creating a mosaic surface covering, in particular floor panel of the type mentioned, which is made of wood and / or wood material or of other materials, such as plastic, and with which a mosaic surface covering create in simple click-laying and disassemble as needed.

• - am Verbindungsprofil ist ein über eine Stoßkante ragender Vorsprung angeordnet, welcher im verlegten Zustand der Baupaneele in eine an der Feder liegende, gegenüber der Stoßkante zurückversetzte Nut eingreift oder gegen eine zwischen der Stoßkante und der Abstufung liegende Stufe drückt, so dass die lösbare Verbindung auch in senkrechten Richtung verriegelbar ist.

This object is achieved by a novel building panel in which the one connecting profile comprises a profiled groove and a locking arm projecting beyond an abutment edge, whereas the second connecting profile opposite the connecting profile comprises a tongue compatible with the groove,
wherein the profiled groove of the connection profile comprises a trapezoidal groove recessed with respect to the abutting edge, the groove flank of which transitions stepwise into the abutting edge via a step,
wherein a projection of the connection profile protrudes into the trapezoidal groove in the laid state of the building panel,
and wherein the other, mutually parallel connection profiles are mirror-symmetrical to each other and are characterized by the following structure and properties:

• - On the connection profile projecting over a joint edge projection is arranged, which engages in the laid state of the building panels in a recessed spring against the abutting edge groove or presses against a lying between the abutting edge and the step level, so that the detachable connection also can be locked in the vertical direction.

Of great advantage is that the connection profiles according to the present invention provide a lock at the same time in a laying plane and in a vertical direction and can be easily installed.

It is also advantageous that with the mutually mirror-symmetrical connection profiles a universal connection can be created.

It is advantageous that the protrusion lying on the spring of the connection profile may comprise a lip facing away from the underside, which hook-like manner engages in a laid on the connection profile of the Gegenpaneels groove bottom in the installed state of the building panel, wherein the groove bottom adjoins the projection of the connection profile. The hook-like arrangement improves the stability of the connection and secures the lock.

Furthermore, the projection of the connection profile may have an inclined support surface for surface contact with the step on the connection profile of the counter panel.

The building panels according to the invention can be laid directly or via a special film on a flat surface "floating" or glued to the substrate.

At the mutually mirror-symmetrical connection profiles can each be arranged in the direction of underside pointing, partially rounded projection, the rounded portion is adapted to a concave portion of the locking arm of the Gegenpaneels.

At the said concave portion of the locking arm and the spring can be supported with its rounded projection.

The building panel may be a trim panel, in particular a floor panel. The building panel can also be used to cover walls, ceilings or building facades. According to the principle of the invention also furniture panels or inner panels can be made on sea yachts or passenger ships.

In the following description, the term "building panel" is replaced by the term "floor panel" which is not to be understood as limiting floor installation.

The floor panels according to the invention may be made of wood, wood material, plastic or metal, in a solid or multi-layered design. In addition, the floor panels can be made of solid wood or of so-called HDF laminate (high density fiberboard) or of MDF laminate (medium density fiberboard) or of other wood-based plastic combinations.

The invention is particularly directed to execution of solid wood and wood-based material. The wooden floors are generally durable and durable. The solid wood grants all the positive qualities: air ionization, microclimate regulation indoors, protection against electrostatic charge and against dust suit, also has an anti-allergic effect.

Finally, the invention relates to a building panel set for forming a mosaic surface covering, consisting of a plurality of building panels of the type mentioned above.

• 1 ein Fussbodenpaneel mit Verriegelungsmitteln in Form einer Feder und einer profilierten Nut, in einem schematischen Querschnitt;
• 2 das Fussbodenpaneel gemäß 1 mit zueinander spiegelsymmetrisch angeordneten Verriegelungsmitteln, die mit der Feder und der Nut kompatibel sind, in einem schematischen Querschnitt;
• 3 drei mit der Feder eines Fussbodenpaneels an ihrer Schmalseite zusammengefügte Gegenpaneele, in einer schematischen perspektivischen Ansicht;
• 4 zwei zueinander parallel angeordnete Fussbodenpaneele mit dazwischen liegenden, miteinander verbundenen Gegenpaneelen, in einer schematischen perspektivischen Ansicht;
• 5 eine schachbrettartige Anordnung von verlegten Fussbodenpaneelen und Gegenpaneelen, in einer vereinfachten, perspektivischen Ansicht;
• 6 das Gegenpaneel vor dem Eindrücken mit seiner Schmalseite in ein Verbindungsprofil des Fussbodenpaneels, in einer schematischen perspektivischen Ansicht;
• 7 das Fussbodenpaneel und Gegenpaneel gemäß 6, nach dem Verbinden, in einer schematischen perspektivischen Ansicht;
• 8 einen nächsten Montageschritt zur Bildung eines Schachbrettmusters, indem ein zweites, geneigtes Gegenpaneel über eine Nut- Feder-Verbindung (Click-Verbindung) in das Verbindungsprofil des ersten Gegenpaneels hineingreift, in einer schematischen perspektivischen Ansicht;
• 9 die miteinander verbundenen Fussbodenpaneele gemäß 8, in einer schematischen perspektivischen Ansicht;
• 10 vier an das Fussbodenpaneel mit ihren Schmalseiten angeschlossene Gegenpaneele, in einer perspektivischen Ansicht;
• 11 einen weiteren Montageschritt zur Bildung des Schachbrettmusters, welcher ein zweites, in die Schmalseiten der Gegenpaneele eingreifendes, geneigtes Fussbodenpaneel darstellt;
• 12 ein rechteckiges Modul, zusammengesetzt aus zwei parallel zueinander liegenden Fussbodenpaneelen und vier Gegenpaneelen, in einer perspektivischen Ansicht;
• 13 einen ersten Montageschritt zur Bildung eines Fischgrätmusters, indem in die profilierte Nut des Fussbodenpaneels ein Gegenpaneel mit seiner Schmalseite hineingedrückt ist, in einer perspektivischen Ansicht;
• 14 einen zweiten Montageschritt zur Bildung des Fischgrätmusters, indem ein gegenüber des Fussbodenpaneels geneigtes, zweites Fussbodenpaneel derselben Ausmaße, vor dem Absenken auf den Untergrund, ebenso in einer perspektivischen Ansicht;
• 15 einen dritten Montageschritt zur Bildung des Fischgrätmusters, indem das zweite, abgesenkte Fussbodenpaneel unter Ausübung einer Kraft gegen das Gegenpaneel drückt, in einer perspektivischen Ansicht;
• 16 einen weiteren Montageschritt zur Bildung des Fischgrätmusters, indem ein zweites Gegenpaneel mit seiner Schmalseite mit dem ersten Fussbodenpaneel und mit seiner Feder mit dem ersten Gegenpaneel verbunden ist, in einer perspektivischen Ansicht;
• 17 ein vergrößertes Detail einer ersten lösbaren Verbindung des Fussbodenpaneels mit dem Gegenpaneel, in einem Schnitt durch die Verbindungsprofile;
• 18 ein vergrößertes Detail einer zweiten Verbindung des Fussbodenpaneels mit dem Gegenpaneel, in einem Schnitt durch die Verbindungsprofile;
• 19 ein vergrößertes Detail einer dritten Verbindung des Fussbodenpaneels mit dem Gegenpaneel, in einem Schnitt durch die ineinandergreifende Verbindungsprofile;
• 20 eine vergrößerte Darstellung der Verbindungsprofile gemäß 1,
• 21 eine vergrößerte perspektivische Darstellung des Fussbodenpaneels gemäß 6;
• 22 ein Fischgrätmuster mit zueinander senkrecht angeordneten Fussbodenpaneelen und Gegenpaneelen, in einer Draufsicht auf die Flachseite eines Fussbodens und
• 23 ein Fussbodenpaneel in einer Parallelogramm-Ausführung, in einer Draufsicht auf seine Flachseite.

Further advantages and features of the invention are explained in more detail in the following embodiments with reference to the drawing. The figures show:

• 1 a floor panel with locking means in the form of a spring and a profiled groove, in a schematic cross section;
• 2 the floor panel according to 1 with mutually mirror-symmetrically arranged locking means which are compatible with the spring and the groove, in a schematic cross section;
• 3 three with the spring of a floor panel at its narrow side joined counter panel, in a schematic perspective view;
• 4 two mutually parallel floor panels with interposed, interconnected counter-panels, in a schematic perspective view;
• 5 a checkered arrangement of installed floor panels and counter panels, in a simplified, perspective view;
• 6 the Gegenpaneel before pressing with its narrow side in a connecting profile of the floor panel, in a schematic perspective view;
• 7 the floor panel and counter panel according to 6 after joining, in a schematic perspective view;
• 8th a next assembly step for forming a checkerboard pattern by a second, inclined Gegenpaneel engages via a tongue and groove connection (Click connection) into the connection profile of the first Gegenpaneels, in a schematic perspective view;
• 9 according to the interconnected floor panels 8th in a schematic perspective view;
• 10 four counter panels connected to the floor panel with their narrow sides, in a perspective view;
• 11 a further assembly step for forming the checkerboard pattern, which is a second, in the narrow sides of the Gegenpaneele engaging, inclined Fußbodenpaneel;
• 12 a rectangular module, composed of two mutually parallel floor panels and four counter-panels, in a perspective view;
• 13 a first assembly step for forming a herringbone pattern by a counter panel is pressed with its narrow side in the profiled groove of the floor panel, in a perspective view;
• 14 a second mounting step for forming the herringbone pattern, by a second floor panel of the same dimensions inclined to the floor panel, before lowering onto the ground, as well as in a perspective view;
• 15 a third assembly step of forming the herringbone pattern by the second lowered floor panel pressing against the counter panel by applying a force, in a perspective view;
• 16 a further mounting step for forming the herringbone pattern by a second Gegenpaneel is connected with its narrow side to the first floor panel and with its spring to the first Gegenpaneel, in a perspective view;
• 17 an enlarged detail of a first releasable connection of the floor panel with the Gegenpaneel, in a section through the connecting profiles;
• 18 an enlarged detail of a second connection of the floor panel with the Gegenpaneel, in a section through the connecting profiles;
• 19 an enlarged detail of a third connection of the floor panel with the Gegenpaneel, in a section through the interlocking connection profiles;
• 20 an enlarged view of the connection profiles according to 1 .
• 21 an enlarged perspective view of the floor panel according to 6 ;
• 22 a herringbone pattern with mutually perpendicularly arranged floor panels and counter panels, in a plan view of the flat side of a floor and
• 23 a floor panel in a parallelogram design, in a plan view of its flat side.

The same or similar elements may be provided in the following figures with the same or similar reference numerals. Furthermore, the figures of the drawing, the description and the claims contain numerous features in combination. It is clear to a person skilled in the art that these features are also considered individually or that they can be combined to form further combinations not described here in detail. The invention expressly extends to such embodiments, which are not given by combinations of features of explicit back references of the claims, whereby the disclosed features of the invention, as far as is technically feasible, can be combined with each other arbitrarily. The exemplary embodiments illustrated in the figures therefore have only descriptive character and are not intended to limit the invention in any way.

• - Die „Sichtfläche“, anders Trittfläche genannt, entspricht der sich nach der Verlegung ergebenden Oberseite der Baupaneele bzw. deren Nutzschicht;
• - Die „Unterseite“ entspricht einer der Sichtfläche gegenüberliegenden Basisfläche des Baupaneels;
• - Das „Verbindungsprofil“ ist die auf eine durch die Sicht- und Basisflächen begrenzte und von deren Kanten ausgehende profilierte Fläche des Baupaneels, die in die seitliche profilierte Fläche des Gegenpaneels lösbar hineingreift;
• - „Stoßkante“ bzw. „Stoß“ bezieht sich in vorliegendem Fall auf zwei senkrecht zur Sicht- bzw. Basisfläche gerichtete, miteinander in Kontakt stehende Flächen der Verbindungsprofile, insbesondere der Nutzschicht;
• - „Gegenpaneel“ bezieht sich auf das Baupaneel, beispielsweise Fussbodenpaneel, das mit dem anderen zusammenwirkt und sich durch denselben Aufbau auszeichnet; In vorliegendem Fall sind die Gegenpaneele auch mit Bezugszeichen 1 und 2 bezeichnet;

For better understanding of the embodiments, the following terms are explained as used in connection with the drawings:

• - The "visible surface", otherwise called tread, corresponds to the resulting after installation top of the building panels or their wear layer;
• - The "bottom" corresponds to one of the visible surface opposite base surface of the building panel;
• - The "connection profile" is on a limited by the viewing and base surfaces and emanating from the edges profiled surface of the building panel, which removably engages in the lateral profiled surface of the Gegenpaneels;
• - "edge" or "shock" refers in the present case to two perpendicular to the visual or base surface directed, mutually contacting surfaces of the connection profiles, in particular the wear layer;
• - "counter panel" refers to the building panel, for example floor panel, which interacts with the other and is characterized by the same structure; In the present case, the counter-panels are also denoted by reference numerals 1 and 2 designated;

Terms such as "top", "top", "bottom", "bottom", "below", "above", "left", right "etc. refer to the building panels laid on a horizontal surface, as in the drawing is shown.

The 1 . 2 . 20 and 21 each show a building panel 1 or. 2 , hereinafter referred to as floor panel, which in the present case of a wear layer 7 and a soil layer 8th made of solid wood and an intermediate core layer 9 is composed of wood material. The wear layer 7 is made of hardwood, such as oak, birch or beech. The wear layer 7 has a tread 30 which has been subjected to a surface treatment with a special wax-based solution.

The rectangular floor panel 1 . 2 (see. 21 ) has two longitudinal connection profiles arranged at its periphery 3 . 4 as well as two perpendicular to the connection profiles 3 . 4 directed, so running on the narrow sides of the floor panel connecting profiles 5 . 6 on. In the 21 are only two mutually perpendicular connection profiles 4 and 5 visible. The floor panel 1 . 2 can also be seen in plan view of its flat side (tread 30 ) be square. In the following, however, only elongated, not square floor panels 1 . 2 and their installation described.

In 1 and 20 are the connection profiles 3 . 4 shown in detail. The connection profile 3 has a profiled groove 11 on which one of over a bumper 13 protruding locking arm 16 limited, however, the connection profile 4 has a spring 12 on, not just the groove 11 , but also to the lying on the narrow side connection profile 5 . 6 is adjusted.

At the profiled groove 11 is one opposite the abutting edge 13 recessed groove bottom 32 a smaller, approximately trapezoidal groove 14 introduced, which is like a stairway on a groove edge 15 , a gradation 17 and a tilted step 22 to the left edge 13 followed. A second, lower groove flank 33 is on a lower surface 34 (see. 18 ) one on the spring 12 arranged projection 18 adjusted, with an upturned lip 23 is limited.

The locking arm 16 ends with an upturned lip 35 which has a concave, rounded section 29 in a sloping groove bottom portion 36 the groove 11 passes. The lip 35 the locking arm 16 fits in a lower groove 37 at the connection profile 3 . 4 (see. 19 ) and in a lower groove 38 of the connection profile 5 . 6 (see. 17 ) into it. It is important that the two connection profiles 5 . 6 are arranged mirror-symmetrically to each other.

The spring 12 of the connection profile 4 has a rounded, downward pointing projection 31 on which is between the surface 34 of the projection 18 and the groove 37 extends.

The two connection profiles 5 . 6 each include one over a bumper edge 19 protruding projection 25 , which has a groove bottom 24 in a downward, a rounding off 28 having projection 27 passes. The rounding off 28 closes again to the said groove 38 on.

17 . 18 and 19 each provide a detachable connection 10 . 10 ' . 10 " the above-described floor panels 1 . 2 dar. With one of the tread 30 opposite bottom U become the floor panels 1 . 2 on a flat surface 20 laid.

That's how it shows 17 a connection 10 in which the lead 25 of the connection profile 5 . 6 with a support surface 26 against the inclined step 22 the counter panel from below and at the same time with the projection 27 against the concave section 29 the locking arm 16 presses from above. Thus, the floor panels are releasably connected to each other on their narrow and long sides, as well as in the 3 and 4 you can see. The abutment surfaces 13 . 19 the massive wear layer 7 define a separation plane TE , This is the connection 10 both in a laying plane e as well as in a vertical direction Z locked.

The lead 25 of the connection profile 5 . 6 but also in a groove 21 of the other connection profile 4 (see. 18 ) are pressed in, with the lip 23 of the projection 18 at the spring 12 against the groove bottom 23 presses the Gegenpaneels and thus a hook-like connection 10 ' forms, so the connection 10 ' is sufficiently secured in all directions of a three-dimensional coordinate system before the shifts to each other.

The connection 10 " two floor panels 1 about their connection profiles 3 and 4 , so in the present case on their long sides, the shows 19 , The lead 18 of the connection profile 4 reaches into the groove 32 the Gegenpaneels, however, the rounded projection 31 the feather 12 relies on the rounding off 29 (on the locking arm 16 ). The abutment surfaces 13 . 19 contact each other to form the parting plane TE , The connection 10 " is also both in a laying plane e as well as in a vertical direction Z locked.

A method of forming a mosaic panel 100 is based on the 5 to 16 described. It shows the 5 schematically a checkerboard module 39 , which is composed of alternately arranged panel fields and can be extended as desired.

At the beginning of the assembly ( 6 and 7 ) is on the connection profile 4 the flat on the ground 20 lying floor panel 1 a counter panel 2 with its narrow side 41 pressed until a flat tread 30 achieved. The two floor panels 1 . 2 are rectangular.

In a second assembly step, the counter panels 2 and others individually first in an inclined position (cf. 8th ) with the spring 12 of the connection profile 4 in the groove 11 of the connection profile 3 inserted and then with its narrow side 41 by pivoting down into the side connection profile of the floor panel 1 pushed in until part of the panel field, as in 10 represented, is laid. With a right, first inclined floor panel 1 (see. 11 ), which with its connection profile 3 in the connection profile 5 or 6 on the narrow side of the Gegenpaneele 2 placed and then against the ground 20 is pressed, becomes a square panel field 40 (see. 12 ) educated.

Around a floor covering in the form of a herringbone pattern (mosaic surface covering 100 ) according to 22 To be able to transfer is first in the connection profile 3 a first floor panel 1 a first counter panel 2 with its narrow side, ie with its connection profile 5 or 6 dented, as it is in 13 you can see. The connection profiles 3 of the floor panel 1 and the counter panel 2 point into the interior of the resulting panel field.

In another assembly step (see. 14 and 15 ) is in a tilted position a second floor panel 1 with his pen 12 in the groove 11 of the elongated connection profile 3 of the first floor panel 1 placed and then swung down to the second floor panel 1 with its narrow side in the connection profile 3 of the counter panel 2 while exercising the power F along the second floor panel 1 locks. The installation of further floor panels 1 and counter panels 2 for the formation of the herringbone pattern takes place in the same way. As the 16 shows the laid floor panels are connected to each other so that the movements or displacements in laying and vertical direction are excluded.

A floor panel 1 according to 23 is characterized by the fact that its narrow sides 41 at a sharp angle β are arranged to the longitudinal side, for example 45 °. The relocation such floor panels is done in the same manner as described above.

LIST OF REFERENCE NUMBERS

1; 2

building panel

3, 4

connection profile

5; 6

Connection Profile; mirror-symmetrical

7

wear layer

8th

soil layer

9

core layer

10, 10 ', 10 "

connection

11

profiled groove

12

feather

13

Bumper edge (v. 3 . 4 )

14

trapezoidal groove

15

Groove flank (v. 14 )

16

Locking arm (v. 1 )

17

Gradation (v. 3 )

18

head Start

19

Bumper edge (v. 5 . 6 )

20

underground

21

groove

22

step

23

Lip (v. 18 )

24

Groove bottom (v. 5 . 6 )

25

head Start

26

Support surface (v. 25 )

27

Projection (v. 5 . 6 )

28

rounding off

29

concave section

30

tread

31

head Start

32

Groove bottom (v. 14 )

33

Groove flank (v. 14 )

34

Area (v. 18 )

35

Lip (v. 16 )

36

groove bottom

37

Groove (v. 4 )

38

groove

39

chessboard module

40

Paneelfeld

41

narrow side

100

Mosaic surface covering

e

laying plane

F

force

β

sharp angle

TE

parting plane

U

bottom

Z

Direction (vertical)

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 1787027 [0002]

Claims (9)

A releasable connection (10; 10 '; 10 ") of at least two panel-shaped building panels (1, 2) to one another for mounting a mosaic surface covering (100), of which both the first building panel (1) and the second building panel (2) have lateral connection profiles (3, 4; 5, 6) which, when laid, mesh with one another on a substrate (20) in such a way that the laid building panels (1, 2) are vertical both in a laying plane (E) and in a laying plane (E) Direction (Z) are secured against shifts to each other, in that the connecting profile (3) has a profiled groove (11) and a locking arm (16) projecting beyond an abutment edge (13), whereas the connecting profile (4) opposite the connecting profile (3) has a spring (12) compatible with the groove (11) ), wherein the profiled groove (11) of the connecting profile (3) comprises a trapezoidal groove (14) recessed from the abutment edge (13), the groove flank (15) of which transitions stepwise into the abutting edge (13) via a step (17), wherein in the trapezoidal groove (14) in the installed state of the building panels (1) protrudes a projection (18) of the connecting profile (4), wherein the remaining mutually parallel connecting profiles (5, 6) are mirror-symmetrical to each other such that on the connecting profile (5, 6) via a abutment edge (19) projecting projection (25) is arranged, which in the installed state of the building panels (1 , 2) in a lying on the spring (12), with respect to the abutting edge (19) recessed groove (21) engages or against a between the abutment edge (19) and the step (17) lying step (22) suppressed, so that the Connection (10; 10 '; 10 ") in the direction (Z) is lockable. Compound (10 ') after Claim 1 , characterized in that on the spring (12) of the connecting profile (4) arranged projection (18) comprises a bottom (U) facing away from lip (23), which in the installed state of the building panels (1, 2) like a hook in an am Connecting profile (5, 6) of the other building panel incorporated groove bottom (24) engages, wherein the groove bottom (24) adjoins the projection (25) of the connecting profile (5, 6). Compound (10; 10 '; 10 ") after Claim 1 , characterized in that the projection (25) of the connection profile (5, 6) comprises an inclined support surface (26) for surface contact with the step (22). Connection (10; 10 '; 10 ") according to one of Claims 1 to 3 , in which a partially rounded projection (27) pointing in the direction of the underside (U) is arranged on the connecting profile (5, 6) of the building panel, the rounded portion (28) of which is a concave portion (29) of the locking arm (16). the connection profile (3) of the other building panel corresponds. Connection (10; 10 '; 10 ") according to one of Claims 1 to 4 , characterized in that in the projection (25) outgoing spring (12) comprises a rounded, on the underside (U) directed projection (31). Connection (10; 10 '; 10 ") according to one of Claims 1 to 5 , characterized in that the spring (12) with its projection (31) in the installed state of two adjacent building panels on the said concave portion (29) of the locking arm (16) is supported. Connection (10; 10 '; 10 ") according to one of Claims 1 to 6 , characterized in that at least two building panels (1, 2) to be joined together are perpendicular to each other or at a sharp angle (β), forming parallelograms, to be arranged in the laying plane (E). Connection (10; 10 '; 10 ") according to one of Claims 1 to 7 , characterized in that the angle (β) is 60 ° or 45 °. Building panel set consisting of a plurality of building panels (1, 2) according to Claim 1 to form a mosaic surface covering (100).

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