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Title:
A SUPPORT BASE AND A TILE JOINT
Document Type and Number:
WIPO Patent Application WO/2021/058874
Kind Code:
A1
Abstract:
The invention relates to a support base (1) for attaching a tile (10, 100) to a wall structure. The support base (1) having a gripper (2) protruding from the front surface (11) comprising a first gripper arm (20) protruding from the support base (1) to a first direction; a first locking part (21) extending from the first gripper arm (20) to a second direction transverse to the first direction; a second locking part (22) extending from the first gripper arm (20) to a third direction transverse to the first direction on an opposite side of the first gripper arm (20) than the first locking part (21). The first locking part (21) and the second locking part (22) are arranged to lock the tile (10, 100) to the support base (1).

Inventors:
LASANEN JARKKO (FI)
JOKELA JOUNI (FI)
Application Number:
PCT/FI2020/050629
Publication Date:
April 01, 2021
Filing Date:
September 25, 2020
Export Citation:
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Assignee:
LASANEN INCORPORATED OY (FI)
International Classes:
E04F13/08; E04F13/076; E04F13/09; E04F13/12; E04F13/14
Domestic Patent References:
WO1992008857A11992-05-29
Foreign References:
EP0484524A11992-05-13
US4890433A1990-01-02
EP1918481A22008-05-07
EP0287391A21988-10-19
Attorney, Agent or Firm:
PRIMROSE OY (FI)
Download PDF:
Claims:
CLAIMS

1. A support base (1) for attaching a tile (10, 100) to a wall structure, the support base (1) having a front surface (11) and a back surface (12), which the back surface (12) is arranged to be attached to the wall structure, the support base (1) comprises a gripper (2) protruding from the front surface (11), characterized in that the gripper (2) comprises: a first gripper arm (20) protruding from the support base (1) to a first direction; a first locking part (21) extending from the first gripper arm (20) to a second direction transverse to the first direction; the first locking part (21) is arranged to connect a back surface of the tile (10, 100) to the front surface (11) of the support base (1) and to lock the tile (10, 100) to the support base (1), the gripper (2) further comprises: a second locking part (22) extending from the first gripper arm (20) to a third direction transverse to the first direction on an opposite side of the first gripper arm (20) than the first locking part (21); the second locking part (22) is arranged to connect together with the first locking part (21) the back surface of the tile (10, 100) to the front surface (11) of the support base (1) and to lock the tile (10, 100) to the support base (1).

2. A support base (1) according to claim 1,characterized in that the gripper (2) further comprises: a second gripper arm (200) protruding from the support base (1) to a first direction; a first locking part (201) extending from the second gripper arm (200) to a second direction transverse to the first direction; the first locking part (201) of the second gripper (200) is arranged to connect the back surface of the tile (10, 100) to the front surface (11) of the support base (1) and to lock the tile (10, 100) to the support base (1) together with the first locking part (21) of the first gripper (20).

3. A support base (1) according to claim 2,characterized in that the first locking part (21) of the first gripper arm (20) and the first locking part (201) of the second gripper arm (200) are arranged to extend towards each other; or the first locking part (21) of the first gripper arm (20) and the first locking part (201) of the second gripper arm (200) are arranged to extend away from each other.

4. A support base (1) according to claim 2 or 3, characterized in that the gripper (2) further comprises: a second locking part (202) extending from the second gripper arm (200) to a third direction transverse to the first direction on an opposite side of the second gripper arm (200) than the first locking part (201); the second locking part (202) is arranged to connect together with the first locking part (201) the back surface of the tile (10, 100) to the front surface (11) of the support base (1) and to lock the tile (10, 100) to the support base (1).

5. A support base (1) according to any previous claim, characterized in that the first gripper arm (20, 200) comprising a first surface (20a) and a second surface (20b) opposite to the first surface (20a), said first locking part (21, 201) protruding from the first surface (20a) and said second locking part (22, 202) protruding from the second surface (20b).

6. A support base (1) according to any previous claim, characterized in that the first locking part (21) extending from the first gripper arm (20) by forming at least one bend in the first gripper arm (20) and protruding at least in the second direction and/or the first locking part (201) extending from the second gripper arm (200) by forming at least one bend in the second gripper arm (200) and protruding at least in the second direction; or the second locking part (22) extending from the first gripper arm (20) by forming at least one bend in the first gripper arm (20) and protruding at least in the third direction and/or the second locking part (202) extending from the second gripper arm (200) by forming at least one bend in the second gripper arm (200) and protruding at least in the third direction; or the first locking part (21) extending from the first gripper arm (20) by forming at least one bend in the first gripper arm (20) and protruding at least in the second direction and the second locking part (22) extending from the first gripper arm (20) by forming at least one further bend in the first gripper arm (20) and protruding at least in the third direction and/or the first locking part (201) extending from the second gripper arm (200) by forming at least one bend in the second gripper arm (200) and protruding at least in the second direction and the second locking part (202) extending from the second gripper arm (200) by forming at least one further bend in the second gripper arm (200) and protruding at least in the third direction.

7. A support base (1) according to claim any previous claim, characterized in that the first locking part (21) is provided through bending the first gripper arm (20) to the second direction and/or the first locking part (201) is provided through bending the second gripper arm (200) to the second direction; or the second locking part (22) is provided through bending the first gripper arm (20) to the third direction and/or the second locking part (202) is provided through bending the second gripper arm (200) to the third direction; or the first locking part (21) is provided through bending the first gripper arm (20) to the second direction and the second locking part (22) is provided through bending the first gripper arm (20) to the third direction and/or the first locking part (201) is provided through bending the second gripper arm (200) to the second direction and the second locking part (202) is provided through bending the second gripper arm (200) to the third direction.

8. A support base (1) according to claim any previous claim, characterized in that the first gripper arm (20) and/or the second gripper arm (200) extending from the front surface (11) of the support base (1) in an angle (a) which is less than 90°.

9. A support base (1) according to claim any previous claim, characterized in that the first locking part (21) extending from the first gripper arm (20) to the second direction such that an angle between the second direction and a direction (A) orthogonal to the front surface (11) of the support base (1) is less than 90°; or the second locking part (22) extending from the first gripper arm (20) to the third direction such that an angle between the third direction and a direction (A) orthogonal to the front surface (11) of the support base (1) is less than 90°; or the first locking part (201) extending from the second gripper arm (200) to the second direction such that an angle between the second direction and a direction (A) orthogonal to the front surface (11) of the support base (1) is less than 90°; or the second locking part (202) extending from the second gripper arm (200) to the third direction such that an angle between the third direction and a direction (A) orthogonal to the front surface (11) of the support base (1) is less than 90°.

10. A support base (1) according to any previous claim, characterized in that the support base (1) further comprises at least one side gripper (3) arranged to be connected to a top or bottom surface of the tile (10, 100), the side gripper (3) protruding from the front surface (11) of the support base (1).

11. A support base (1) according to claim 10, characterized in that the side gripper (3) having a first gripper surface (3a) and a second gripper surface (3b) opposite to the first gripper surface (3a), and the first gripper arm (20) of the gripper (2) having a first surface (20a) and a second surface (20b) opposite to the first surface (20a), the first gripper surface (3a) of the side gripper (3) extending transverse relative to the first surface (20a) of the first gripper arm (20).

12. A tile joint for connecting tiles (10, 100) to a support base (1), which the support base (1) is attachable to a wall structure,characterized in that the tile joint comprises: a gripper (2) protruding from a front surface (11) of the support base (1), the gripper (2) having a first gripper arm (20) protruding from the support base (1) to a first direction and a first locking part (21) extending from the first gripper arm (20) to a second direction transverse to the first direction; and a tile (10, 100) having a front surface (101), a back surface (102) and a first cavity (4) extending from the back surface (102) toward the front surface (101); the gripper (2) is connected to the tile (10, 100) for connecting the tile (10, 100) to the support base (1) such that the first gripper arm (20) being provided within the first cavity (4), the first locking part (21) being engaged with the first cavity (4) and the back surface (102) of the tile (10, 100) being provided against the front surface (11) of the support base (1), the gripper (2) having a second locking part (22) extending from the first gripper arm (20) to a third direction transverse to the first direction on an opposite side of the first gripper arm (20) than the first locking part (21) and said second locking part (22) being engaged with the first cavity (4).

13. A tile joint according to claim 12, characterized in that the gripper (2) further comprising a second gripper arm (200) protruding from the support base (1) to a first direction and a first locking part (201) extending from the second gripper arm (200) to a second direction transverse to the first direction, the second gripper arm (200) being provided within the first cavity (4) together with the first gripper arm (20) and the first locking part (201) being engaged with the first cavity (4); or the tile (10, 100) comprising a second cavity (40) and the second gripper arm (200) being provided within the second cavity (4) and the first locking part (201) being engaged with the second cavity (40).

14. A tile joint according to claim 12 or 13,characterized in that the gripper (2) having a second locking part (202) extending from the second gripper arm (200) to a third direction transverse to the first direction on an opposite side of the second gripper arm (200) than the first locking part (201) and said second locking part (202) being engaged with the first cavity (4); and/or the tile (10, 100) comprising a second cavity (40) and the gripper (2) having a second locking part (202) extending from the second gripper arm (200) to a third direction transverse to the first direction on an opposite side of the second gripper arm (200) than the first locking part (201) and said second locking part (202) being engaged with the second cavity (40).

15. A tile joint according to any of claims 12-14, characterized in that the first cavity (4) having a first cavity portion (41) and the first locking part (21) of the first gripper arm (20) being provided within the first cavity portion (41); and/or the first cavity (4) having a second cavity portion (42) and the second locking part (22) of the first gripper arm (20) being provided within the second cavity portion (42); and/or the second cavity (40) having a first cavity portion (401) and the first locking part (201) of the second gripper arm (200) being provided within the first cavity portion (401); and/or the second cavity (40) having a second cavity portion (402) and the second locking part (202) of the second gripper arm (200) being provided within the second cavity portion (402); or the first cavity having a first cavity portion (41) and a second cavity portion (42) and the first locking part (21) of the first gripper arm (20) being provided within the first cavity portion (41) and the first locking part (201) of the second gripper arm (200) being provided within the second cavity portion (42).

16. A tile joint according to any of claims 12-15, characterized in that the tile joint having the first gripper arm (20) provided to the first cavity portion (41) having a first side surface (41a) and a second side surface (41b) opposite to the first side surface (41a) such that the first locking part (21) forming a connection with the first side surface (41a) and the first gripper arm (20) forming a connection with the second side surface (41b).

17. A tile joint according to any of claims 12-16, characterized in that the second cavity portion (42, 402) extending from the first cavity portion (41, 401) transversely relative to the first cavity portion (41, 401).

18. A tile joint according to any of claims 12-17, characterized in that tile joint further comprising a first side gripper (3a) protruding from the front surface (11) of the support base (1) and having a gripping part (30), the gripping part forming a connection with a first side surface of the tile (10, 100).

19. A tile joint according to claim 18, characterized in that the tile joint further comprising a second side gripper (3b) protruding from the front surface (11) of the support base (1) and having a gripping part (30), the gripping part forming a connection with a second side surface of the tile (10, 100) such that the tile (10, 100) is arranged between the first side gripper (3a) and the second side gripper (3b).

20. A tile joint according to any of claims 12-19, characterized in that the first gripper arm (20) protruding from the front surface (11) of the support base (1) to the first direction and the first cavity (4) extending from the back surface (102) of the tile (10, 100) toward the front surface (101) of the tile (10, 100) in a direction of the first direction.

21. A tile joint according to any of claim 12-20, characterized in that the tile joint being formed between the support base (2) according to any of claims 1-11 and the tile (10, 100).

Description:
A SUPPORT BASE AND A TILE JOINT

FIELD OF THE INVENTION

The present invention relates to a support base for attaching a tile to a wall structure, and more particularly to a support base as defined in the preamble of the independent claim 1.

The present invention relates also to a tile joint for connecting tiles to a support base, and more particularly to a tile joint as defined in the preamble of the independent claim 12.

BACKGROUND OF THE INVENTION

It is known that tiles can be attached together by adding mortar between the tiles such that after a first tile mortar is provided on a top surface of the first tile and then another tile is placed above the first tile such that mortar connects the tiles together. It is also known from the prior art that support plates are used for connecting tiles to wall structures. The support plates have grippers protruding from the support plates which are used to connect adjacent tiles to the support plate. The tiles are arranged to the support plates such that grippers are provided between two tiles and the gripper forms connection with mortar provided between the tiles.

One problem with prior art is that the connection between adjacent tiles or a tile and a support plate is not always possible through sides of the tiles because of special places to provide tiles, such as to corners or headers.

BRIEF DESCRIPTION OF THE INVENTION

An object of the present invention is to provide a support base and a tile joint for special tiles such as corner tiles, stretcher reveals and header tiles but also to normal brick tiles.

The objects of the invention are achieved by a support base and a tile joint which are characterized by what is stated in the independent claims. The preferred embodiments of the invention are disclosed in the dependent claims.

The invention is based on the idea of providing an attachment for all kinds of tiles to be attached to a wall structure. The wall structure means in this connection any kind of wall structure, also for example a substructure or a subframe. The invention is further based on the idea of forming a form locking connection between tiles and a support base. The form locking connection provides a mechanical connection between the tiles and the support base. According to the invention a support base for attaching a tile to a wall structure has a front surface and a back surface which the back surface is arranged to be attached to the wall structure. The support base comprises a gripper protruding from the front surface of the support base. The gripper comprises a first gripper arm and a first locking part. The first gripper arm protruding from the support base to a first direction and the first locking part extending from the first gripper arm to a second direction transverse to the first direction. The first locking part is arranged to connect a back surface of the tile to the front surface of the support base and to lock the tile to the support base.

According to an embodiment of the invention the gripper further comprises a second gripper arm protruding from the support base to a first direction and a first locking part extending from the second gripper arm to a second direction transverse to the first direction. The first locking part of the second gripper is arranged to connect the back surface of the tile to the front surface of the support base and to lock the tile to the support base together with the first locking part of the first gripper.

According to an embodiment of the invention the first locking part of the first gripper arm and the first locking part of the second gripper arm are arranged to extend towards each other. Alternatively, the first locking part of the first gripper arm and the first locking part of the second gripper arm are arranged to extend away from each other.

According to an embodiment of the invention the gripper further comprises a second locking part extending from the first gripper arm to a third direction transverse to the first direction on an opposite side of the first gripper arm than the first locking part. The second locking part is arranged to connect together with the first locking part the back surface of the tile to the front surface of the support base and to lock the tile to the support base. Alternatively, or in addition the gripper further comprises a second locking part extending from the second gripper arm to a third direction transverse to the first direction on an opposite side of the second gripper arm than the first locking part. The second locking part is arranged to connect together with the first locking part the back surface of the tile to the front surface of the support base and to lock the tile to the support base.

According to an embodiment of the invention the first gripper arm comprises a first surface and a second surface opposite to the first surface, said first locking part protruding from the first surface and said second locking part protruding from the second surface.

According to an embodiment of the invention the first locking part extending from the first gripper arm by forming at least one bend in the first gripper arm and protruding at least in the second direction. Alternatively, or in addition, the first locking part extending from the second gripper arm by forming at least one bend in the second gripper arm and protruding at least in the second direction. Alternatively, or in addition the second locking part extending from the first gripper arm by forming at least one bend in the first gripper arm and protruding at least in the third direction. Alternatively, or in addition the second locking part extending from the second gripper arm by forming at least one bend in the second gripper arm and protruding at least in the third direction. Alternatively, the first locking part extending from the first gripper arm by forming at least one bend in the first gripper arm and protruding at least in the second direction and the second locking part extending from the first gripper arm by forming at least one further bend in the first gripper arm and protruding at least in the third direction. Alternatively or in addition the first locking part extending from the second gripper arm by forming at least one bend in the second gripper arm and protruding at least in the second direction and the second locking part extending from the second gripper arm by forming at least one further bend in the second gripper arm and protruding at least in the third direction.

According to an embodiment of the invention the first locking part is provided through bending the first gripper arm to the second direction. Alternatively, or in addition the first locking part is provided through bending the second gripper arm to the second direction. Alternatively, or in addition the second locking part is provided through bending the first gripper arm to the third direction. Alternatively, or in addition the second locking part is provided through bending the second gripper arm to the third direction. Alternatively, or in addition the first locking part is provided through bending the first gripper arm to the second direction and the second locking part is provided through bending the first gripper arm to the third direction. Alternatively, or in addition, the first locking part is provided through bending the second gripper arm to the second direction and the second locking part is provided through bending the second gripper arm to the third direction.

According to an embodiment of the invention the first gripper arm and/or the second gripper arm extending from the front surface of the support base in an angle which is less than 90°. According to an embodiment of the invention the first locking part extending from the first gripper arm to the second direction such that an angle between the second direction and a direction orthogonal to the front surface of the support base is less than 90°. Alternatively, or in addition the second locking part extending from the first gripper arm to the third direction such that an angle between the third direction and a direction orthogonal to the front surface of the support base is less than 90°. Alternatively, the first locking part extending from the second gripper arm to the second direction such that an angle between the second direction and a direction orthogonal to the front surface of the support base is less than 90°. Alternatively, or in addition the second locking part extending from the second gripper arm to the third direction such that an angle between the third direction and a direction orthogonal to the front surface of the support base is less than 90°.

According to an embodiment of the invention the support base further comprises at least one side gripper arranged to be connected to a top or bottom surface of the tile, the side gripper protruding from the front surface of the support base.

According to an embodiment of the invention the side gripper comprises a gripping part arranged to form a connection with the top or bottom surface of the tile.

According to an embodiment of the invention the side gripper having a first gripper surface and a second gripper surface opposite to the first gripper surface, and the first gripper arm of the gripper having a first surface and a second surface opposite to the first surface, the first gripper surface of the side gripper extending transverse relative to the first surface of the first gripper arm.

According to the invention a tile joint for connecting tiles to a support base being attachable to a wall structure comprises a gripper and a tile which the gripper protruding from a front surface of the support base. The gripper having a first gripper arm protruding from the support base to a first direction and a first locking part extending from the first gripper arm to a second direction transverse to the first direction. The tile having a front surface, a back surface and a first cavity extending from the back surface toward the front surface. In the tile joint the gripper is connected to the tile for connecting the tile to the support base such that the first gripper arm being provided within the first cavity, the first locking part being engaged with the first cavity and the back surface of the tile being provided against the front surface of the support base. According to an embodiment of the tile joint the gripper further comprising a second gripper arm protruding from the support base to a first direction and a first locking part extending from the second gripper arm to a second direction transverse to the first direction. The second gripper arm being provided within the first cavity together with the first gripper arm and the first locking part being engaged with the first cavity. Alternatively, the tile comprising a second cavity and the second gripper arm being provided within the second cavity and the first locking part being engaged with the second cavity.

According to an embodiment of the tile joint the gripper having a second locking part extending from the gripper arm to a third direction transverse to the first direction on an opposite side of the first gripper arm than the first locking part and said second locking part being engaged with the first cavity. Alternatively, or in addition, the gripper having a second locking part extending from the second gripper arm to a third direction transverse to the first direction on an opposite side of the second gripper arm than the first locking part and said second locking part being engaged with the first cavity. Alternatively or in addition, the tile comprising a second cavity and the gripper having a second locking part extending from the second gripper arm to a third direction transverse to the first direction on an opposite side of the second gripper arm than the first locking part and said second locking part being engaged with the second cavity.

According to an embodiment of the tile joint the first cavity having a first cavity portion and the first locking part of the first gripper arm being provided within the first cavity portion. Alternatively, or in addition, the first cavity having a second cavity portion and the second locking part of the first gripper arm being provided within the second cavity portion. Alternatively, or in addition, the second cavity having a first cavity portion and the first locking part of the second gripper arm being provided within the first cavity portion. Alternatively, or in addition, the second cavity having a second cavity portion and the second locking part of the second gripper arm being provided within the second cavity portion. Alternatively, the first cavity having a first cavity portion and a second cavity portion and the first locking part of the first gripper arm being provided within the first cavity portion and the first locking part of the second gripper arm being provided within the second cavity portion.

According to an embodiment of the tile joint, the tile joint having the first gripper arm provided to the first cavity portion having a first side surface and a second side surface opposite to the first side surface such that the first locking part forming a connection with the first side surface and the first gripper arm forming a connection with the second side surface such that a form locking connection is formed between the tile and the support base.

According to an embodiment of the tile joint the second cavity portion extending from the first cavity portion transversely relative to the first cavity portion.

According to an embodiment of the tile joint, tile joint further comprising a first side gripper protruding from the front surface of the support base and having a gripping part, the gripping part forming a connection with a first side surface of the tile for forming the form locking connection between the tile and the support base.

According to an embodiment of the tile joint, the tile joint further comprising a second side gripper protruding from the front surface of the support base and having a gripping part, the gripping part forming a connection with a second side surface of the tile such that the tile is arranged between the first side gripper and the second side gripper and the form locking connection is formed between the tile and the support base.

According to an embodiment of the tile joint the first gripper arm protruding from the front surface of the support base to the first direction and the first cavity extending from the back surface of the tile toward the front surface of the tile in a direction of the first direction.

An advantage of the invention is that the same support base can be used for many kinds of tiles in many places of a building. A further advantage of the invention is that by attaching the tiles from the back surface of the tile to the support base, the attachment action of tiles is more efficient because of a pushing movement.

BRIEF DESCRIPTION OF THE DRAWINGS

The invention is described in detail by means of specific embodiments with reference to the enclosed drawings, in which

Figure 1 shows a support base according to the invention;

Figure 2 shows a tile joint according to the invention;

Figure 3 shows one example of a support base according to the invention;

Figure 4 shows the support base shown in figure 3 as seen from side;

Figure 5 shows another example of a support base according to the invention;

Figure 6 shows the support base shown in figure 5 as seen from side;

Figure 7 shows tile joints according to the invention;

Figure 8 shows another example of a tile joint according to the invention;

Figure 9 shows another example of a support base and a tile joint according to the invention;

Figure 10 shows still another example of a support base according to the invention;

Figure 11 shows another example of the tile joint according to the invention; and

Figure 12 shows still another example of the tile joint according to the invention.

DETAILED DESCRIPTION OF THE INVENTION

Figure 1 shows a support base 1 according to the invention as seen from side. The support base 1 has a front surface 11 and a back surface 12, which the back surface 12 is arranged to be attached to the wall structure. The support base 1 is also attachable to adjacent support bases from its top and bottom edges. The support base 1 comprises a gripper 2 protruding from the front surface 11. One support base 1 may comprise multiple grippers 2 although figure 1 shows only one gripper 1 for the sake of clarity. This also applies to all embodiments of the invention. The gripper 2 comprises a first gripper arm 20 protruding from the front surface of the support base 1 to a first direction. The gripper is preferably made by punching it from the support base 1 and bending it into a desired shape. The gripper 2 further comprises a first locking part 21 extending from the first gripper arm 20 to a second direction transverse to the first direction and a second locking part 22 extending from the first gripper arm 20 to a third direction transverse to the first direction on an opposite side of the first gripper arm 20 than the first locking part 21. In other words, the gripper comprises in this embodiment of the invention at least two locking parts 21, 22 such that at least one of the locking parts is arranged to provide a locking connection with the tile while the other locking part may act as a spring to counterforce the first locking part. The spring force ensures that the first locking part will not escape from its cavity within the tile. The second locking part will also serve as a guide when installing the tile to the support base 1. Further, the at least two locking parts 21, 22 are provided on different sides of the first gripper arm 20 so as to tie the tile with the locking in two different directions. The first locking part 21 and the second locking part 22 are arranged to connect a back surface 102, 202 of the tile 100, 200 to the front surface 11 of the support base 1 and to lock the tile 100, 200 to the support base 1 such that the front surface 101, 201 of the tile is facing away from the support base 1.

Figure 1 shows also a tile 100 in a separated position before forming a tile joint with the support base 1. The tile 100 comprises at least one first cavity 4 having a first cavity portion 41 and a second cavity portion 42. The first cavity 4 is formed to receive the first gripper arm 20 of the gripper 2 together with the first locking part 21 within the first cavity portion 41 and the second locking part 22 within the second cavity portion 42. The first cavity 4 may also be formed such that there is a separate cavity portion for the first locking part 21 or the first cavity 4 may be formed so that the whole gripper 2 is provided within the same cavity portion having a form so as to provide a locking connection with the first and second locking parts 21, 22.

The first gripper arm 20 is arranged to protrude from the support base

I to the first direction. The angle a between the first gripper arm 20 and the front surface 11 of the support base 1 is preferably less than 90°. The first locking part 21 is arranged to extend from the first gripper arm 20 in the second direction. In the embodiment shown in figure 1 an angle between the second direction and a direction A orthogonal to the front surface 11 of the support base 1 is less than 90°. When the first locking part 21 is provided in connection with the tile 100, the effect of the first locking part 21 extending toward the front surface 11 of the support base 1 is that it pulls the tile toward the support base 1. However, the second locking part 22 may also be provided such that it extends toward the front surface

II of the support base 1, but it is enough that at least one of the locking parts is providing a pulling force toward the front surface 11 of the support base 1. The angle a being a smaller of the angles between the front surface 11 of the support base 1 and the first gripper arm 20. Thus, the first gripper arm 20 may protrude from the front surface 11 of the support base 1 for example upwards or downwards at the angle a.

Figure 2 shows a tile joint according to the invention in which the support base 1 shown in figure 1 and the tile 100 shown in figure 1 are connected together for forming the tile joint. The first gripper arm 20 and the first locking part 21 are provided in the first cavity portion 41 and the second locking part 22 is provided within the second cavity portion 42 such that the gripper 20 is inside the first cavity 4 and the back surface 102 of the tile 100 is arranged against the front surface 11 of the support base 1.

Figure 3 shows one example of a support base 1 according to the invention which shows two grippers 2 protruding from the support base 1. As shown in figure 3 the grippers 2 are formed by punching a plate-like support base 1 and bending the grippers 2 such that first and second locking parts 21, 22 are formed. For the sake of clarity, the support base 1 shown in figure 1 is illustrated without forms other than the grippers 2. The grippers 2 comprise the first gripper arms 20 having a first surface 20a and a second surface 20b. The first surface 20a of the first gripper arm 20 is arranged in an angle less than 90° relative to the front surface 11 of the support base 1, and in a preferable embodiment of the invention the angle between the first surface 20a of the gripper 2 and the front surface 11 of the support base 1 is between 20-70° and more preferably between 30-60°. When the support base 1 is attached to a wall structure in a position as it is shown in figure 3 a tile is mounted on the support base 1 by moving it obliquely towards the support base 1.

Figure 4 shows the support base 1 shown in figure 3 as seen from side in which it can be seen that the second locking part 22 is provided in this example such that it extends from the first gripper arm 20 in an angle towards the front surface 11 of the support base 1. In the embodiment shown in figure 4 the first gripper arm 20 is also provided to extend from the front surface 11 of the support base 1 in an angle which is 45°. The first locking part 21 extends from the first gripper arm 20 substantially parallel to the front surface 11 of the support base 1 and forms a further bend in a direction away from the front surface 11 of the support base 1.

Figure 5 shows another example of a support base 1 according to the invention in which the first gripper arm 20 extending into the first direction is bent for forming the second locking part 22. The first locking part 21 is extending from the second locking part 22 and is formed by bending the gripper 2 toward the second direction from the end of the second locking part 22 thereby forming an integral structure with the second locking part 22. In this example the first locking part 21 is slightly extending toward the front surface 11 of the support base 1. These are better seen in figure 6 which shows the support base 1 shown in figure 5 as a side view. In other words, the figures 5 and 6 show the same features shown in different viewing angles.

Figure 7 shows tile joints according to the invention in which three tiles 10, 100 are provided in connection with the support bases 1 for forming the tile joints. The tiles 10, 100 are provided in connection with the support bases 1 such that the back surfaces 102, 202 of the tiles 10, 100 are against the front surface 11 of the support bases 1 and the front surface 101, 201 of the tiles 10, 100 faces away from the wall structure 300. The tiles 10, 100 having first and second side surface 103, 104, 203, 204 such that when the tiles 10, 100 are connected to the support bases 1 the first side surface 103 of the first tile 10 is facing toward the second side surface 204 of the second tile 100.

Figure 8 shows another example of a tile joint according to the invention in which a corner tile 100 is connected to the support base 1. The support bases 1 are connected together such that the corner tile 100 can be attached to the support bases 1. In this example the corner tile 100 comprises multiple cavities 4 for the grippers 2 protruding from the front surfaces 11 of the support bases 1. In case of corner tiles, the connection between the support base 1 and the tile 100 is very advantageous through the back surface 102 of the tile 100 since the side surfaces 103, 104 of the tile 100 are not facing each other. The angle between the first gripper arm 20 and the front surface 11 of the support base 1 is more critical with the corner tiles 100 because of assembling. The angle between the first gripper arm 20 and the front surface 11 of the support base 1 is preferably 45°.

Figure 9 shows another example of a support base 1 and a tile joint according to the invention which differs from the example shown in figure 8 such that the support base 1 further comprises side grippers 3. The side grippers 3 comprise a gripping part 30 for forming contact with the tile 100. The side grippers 3 having a first gripper surface 3a and a second gripper surface 3b opposite to the first gripper surface 3a. The first gripper surface 3a of the side gripper 3 extending transverse relative to the first surface 20a of the first gripper arm 20. The tiles 100 comprise a back surface 102 and a front surface 101. In case of a corner tile 100 the back surface 102 is formed of two portions having for example an angle of 90° between the two portions of the back surface 102. Therefore, the first side 103 and the second side 104 of the corner tile 100 are not facing each other. The tile 100 further comprises a top surface 105 and a bottom surface. Figure 9 shows the top surface 105 of the tile 100. The side gripper 3 is arranged to be connected to the top surface 105. Similarly, another side gripper is arranged to be connected to the bottom surface of the tile.

Figure 10 shows still another example of a support base 1 according to the invention comprising the side grippers 3. The side grippers are arranged in connection with the support base 1 such that the second gripper surfaces 3b are facing each other, i.e. that the grippers 3 are provided such that a tile 100 to be arranged in connection with the support base 1 is provided between the side grippers 3 while the gripper 2 is provided within the tile 100. Figure 11 shows a tile joint according to the invention in which the tile comprises a first cavity 4 and a second cavity 40 such that the first gripper arm 20 is provided within the first cavity 4 and the second gripper arm 200 is provided within the second cavity 40. The first locking part 21 of first gripper arm 20 and the first locking part 201 of the second gripper arm 200 are facing towards each other but in separate cavities 4.

Figure 12 shows a tile joint according to the invention in which the tile comprises a first cavity 4 such that the first gripper arm 20 and the second gripper arm 200 are provided within the same first cavity 40. The first locking part 21 of first gripper arm 20 and the first locking part 201 of the second gripper arm 200 are facing away from each other. The grippers shown in figures 11 and 12 may be similar to any of the gripper embodiments shown in figures 1-10.

The invention has been described above with reference to the examples shown in the figures. However, the invention is in no way restricted to the above examples but may vary within the scope of the claims.