Technical field
[0001] The utility model relates to a system for leveling tiles and finds application in
construction.
Prior art
[0002] Known from
WO/2018/136171 is an assembly and method for aligning and leveling tiles. That assembly includes
a retainer and a tensioning key. The retainer consists of a base and a locking plate
vertically connected to that base. At the point of connection between the base and
the retainer plate there is a weakened section designed to tear-off and detach the
plate from the base. On both sides of the locking plate is installed a guide, which
is solid and has a cylindrical shape for inserting the tensioning key. The tensioning
key has a head consisting of two identical arches located at a distance from each
other forming a groove in which the retainer is place, and the two arches are connected
to a single handle. The inner diameter of each arch corresponds to the outer diameter
of the guide (6). On the outer surface of each arch, bevels are shaped to engage the
tensioning key to the tiles.
[0003] The known system is too complex and impractical in real-world conditions and requires
the installer to have special qualification. The outer surface of the arches is difficult
to manufacture. If adhesive mixture enters between the base of the retainer and the
lower part of the tile, there is a risk of premature rupture of the locking plate,
as there will be no elastic buffer to offset these altered differences in surface
heights.
Summary of the utility model
[0004] The mission of the utility model is to create a tile leveling system that has a simplified
construction, is lightweight and reliable in operation.
[0005] The mission is fulfilled by a tile leveling system that includes a retainer and a
tension key. The retainer comprises a base and a locking plate mounted vertically
to the base, and a weakened tear zone is formed at the place of connection of the
base with the locking plate. A guide is mounted on both sides at the top of the locking
plate, having a cylindrical shape for inserting the tensioning key. The tensioning
key has a head made up of two identical arches spaced apart from each other, wherein
a groove is formed in which the latch is placed, the two arches being connected to
a common handle. The inner diameter (d) of each arch corresponds to the outer diameter
of the guide.
[0006] According to the utility model, stabilizing arms are formed at the bottom of the
locking plate, on which ribs are longitudinally positioned. Transverse ribs are formed
on the outer surfaces of the arches.
[0007] On the outer surfaces of the arches there are sections protruding outwards. An opening
is formed in the guide. The thickness of the retainer plate corresponds to the distance
between the two arches and is functionally dependent on the width of the joint between
tiles. The distance from the center of the guide opening to the base is functionally
dependent on the thickness of the tiles.
[0008] In another embodiment, a transition section is formed in the uppermost part of the
locking plate wherein around the circumference of the retainer plate, on both sides
of its vertical axes teeth are formed with inclination downwards to the base.
[0009] The base and the locking plate of the retainer are made of plastic material.
[0010] The utility model system has a simple and lightweight design. When working with it,
smooth and precise pressure is exercised thanks to the longitudinal locking ribs of
the locking plate, which engage the tiles. The teeth formed on both sides of the vertical
axis allow the key to be inserted on one or the other side of the retainer, which
is for the convenience of the worker. The teeth are tilted down to the base and serve
to provide a stepped and gradual tension of the key when rotated around the guide
by the worker, while preventing the key from turning in the opposite direction and
preventing it from slipping.
[0011] The guide of the locking plate allows for plasticity and deformation after the tensioning
key is mounted on it. The driver prevents premature rupture in the weakened area and
separation of the base and the fixing plate during installation. In addition, under
heavy tension (when the tiles are pressed stronger against each other) the base is
sufficiently elastic, so that the adhesive that is below the tiles and is stuck in
the joints is automatically pushed to the inside of the tile without filling the joint
with adhesive. The material of which the base is made allows it to deform and adhere
tightly to two adjacent tiles, which have a thickness difference of 0.5 to 1 mm. Thanks
to the ribs formed on the outer surface of the head of the tensioning key, a gradual
and smooth tension is achieved, without any risk of tearing and detachment of the
base and the fixing plate before the tiles are leveled.
Description of the drawings
[0012] The utility model is explained in the drawings where:
Figure 1 is a general view of the tile leveling system
Figure 2 is a general view of the tensioning key
Figure 3 is a front view of the retainer
Figure 4 is a side view of the retainer
Figure 5 is a general view of the system, with the retainer with teeth
Figure 6 is a front view of the retainer with teeth
Examples of embodiments of the utility model
[0013] As can be seen on the enclosed drawings, the tiles leveling system comprises a retainer
1 and a tensioning key 2. The retainer 1 comprises a base 3 and a vertically mounted
to the base 3 locking plate 4. At the point of connection of the locking plate 4 to
the base 3, the locking plate 4 is of reduced thickness D wherein a weak tearing zone
5 is formed to allow for easy separation of the base 3 from the locking plate 4. In
the lower part of the locking plate 4 are formed stabilizing arms on which are longitudinally
positioned the ribs 15. On both sides in the upper part of the locking plate 4 is
mounted a guide 6 of cylindrical shape for putting to the tensioning key 2. A through
hole 10 is made in the guide 6. The tensioning key 2 has a head 8, consisting of two
identical arches 17 placed at a distance from each other, wherein groove 21 is formed
to hold the retainer 1, whereas the two arches 17 are connected to a common handle
7. The inner diameter (d) of each arch 17 corresponds to the outer diameter of the
guide 6 and transverse ribs 13 are formed on each arch 17 to engage the tensioning
key 2 to the tiles. On the outer surfaces 11 of the arches 17 are provided protruding
sections 12. The thickness C of the locking plate 4 corresponds to the distance between
the two arches 17 and is functionally dependent on the width of the joint between
the tiles.
[0014] In another embodiment (fig. 5 and fig. 6), along the circumference of the locking
plate 4 there are teeth 19 formed on both sides of its vertical axis, separated by
a transitional section 18 formed at the top of the locking plate 4. The teeth 19 are
inclined downward to the base 3 and allow for inserting the key 2 on one or the other
side of the retainer 1, which is for the convenience of the worker. The teeth 19 serve
to exert a stepped and gradual tension on the key 2 as it is rotated about the guide
6 by the worker, while preventing the key 2 from rotating in the opposite direction
and preventing it from sliding.
[0015] The distance F from the center of the hole 10 of the guide 6 to the base 3 is functionally
dependent on the thickness of the tiles, whereby four variants are possible:
- for tiles with thickness between 3 mm and 7 mm
- for tiles with thickness between 8 mm and 12 mm
- for tiles with thickness between 13 mm and 17 mm
- for tiles with thickness between 18 mm and 22 mm
[0016] The base and locking plate are made of plastic material.
Application of the utility model
[0017] When using the tiles leveling system, adhesive mixture is first applied on the surface
where the tiles will be laid. The first tile is placed and a level is used to check
that it is horizontal. Between the adhesive mixture and the bottom of the tile 16
is inserted the base 3 with the locking plate 4 perpendicular to the surface of the
tiles, and the width of the joint is (between 1 and 4 mm) determined. After that,
on the other side of the locking plate 4 is placed a second tile 16 (see fig. 1 and
fig. 5) and then the tensioning key 2 is placed on the guide 6. Using the handle 7
and the tensioning key 2, pressure is exercised in the direction of the tile 16 until
the two adjacent tiles 16 are levelled against each other. For the worker's convenience,
the teeth 19 on both sides of the vertical axis allow the key 2 to be place on one
or the other side of the retainer 4 (fig. 5 and fig. 6), whereas the teeth 19 inclined
down to the base 3 ensure stepped and gradual tensioning of the key 2 while the worker
turns it around the guide 6 and in the same prevent the key 6 from returning in the
opposite direction and from sliding. A significant role in exercising such pressure
is played by the transverse ribs 13 of the tensioning key 2, which in contact with
the tile 16 achieves a double effect: precision tensioning and preventing the switch
2 from returning to its original position. This action prevents the subsequent displacement
of the tiles 16 relative to each other, both horizontally in the joint direction and
vertically in the direction of the levels. This is repeated with all subsequent tiles
16 laid. The configuration thus created between the key 2 and the locking plate 4
remains stationary for 7 to 24 hours, the time required for the initial adhesive mixture
to harden. After the adhesive has hardened, the locking plate 4, together with the
key 2, is removed by means of a rubber hammer, leaving only the base 3, which is detached
from the locking plate 4, in the tear zone 5, under the tiles 16.
1. Tiles levelling system comprising a retainer (1) and a tensioning key (2), wherein
the retainer (1) contains a base (insert) (3) and a locking plate (4) vertically mounted
on the base (3), whereas at the point of connection of the base (3) and the locking
plate (4) a weak tearing zone (5) is formed and on both sides in the upper part of
the locking plate (4) is installed a guide (6) of cylindrical shape to place the tensioning
key (2), whereas the tensioning key (2) has a head (8) consisting of two identical
arches (17), and between the two arches (17) a groove (21) is formed to hold the retainer
(1) and they are connected to a common handle (7), wherein the inner diameter (d)
of each arch (17) corresponds to the outer diameter of the guide (6) and the outer
surface (11) of each arch (17) allows the tensioning key (2) to engage the tiles,
characterized by that in the lower part of the locking plate (4) are formed stabilizing arms (14) on which
are longitudinally positioned ribs (15), wherein on the outer surfaces (11) of the
arches (17) are formed transverse ribs (13), and on the outer surfaces (11) of the
arches (17) are provided protruding sections (12), on the guide (6) is made a through
hole (10), and the thickness (C) of the locking plate (4) corresponds to the distance
between the two arches (17) and is functionally dependent on the width of the joint
between the tiles, whereas the distance F between the center of the hole (10) on the
guide (6) and the base (3) is functionally dependent on the thickness of the tiles.
2. Tiles levelling system according to claim 1, characterized by that in the uppermost part of the locking plate (4) is formed a transition section (18)
and on the circumference of the locking plate (4) on both sides of its vertical axis
are formed teeth (19) inclined down to the base (3).
3. Tiles levelling system according to claims 1 and 2, characterized by that the base (3) and the locking plate (4) are made of plastic material.