Securing clip and system for installation of flooring elements comprising such a securing clip

1. A securing clip for installation of flooring elements on a supporting element having a guiding groove for engagement with the securing clip, the securing clip having a cross section of a double-flange T type with an upper flange, a web and a lower flange, the upper flange being adapted to be engaged on its both sides with neighboring flooring elements, wherein the upper flange ( 2 ′) comprises at least two parts ( 2 a ′, 2 b ′) located on the opposite sides of the web ( 3 ′) and the lower flange ( 4 ′) comprises lips ( 5 ′) extending beyond each end the web ( 3 ′) in the direction along the web ( 5 ′), the lips ( 5 ′) being blocked in the guiding groove ( 6 ), characterized in that the securing clip is made of a single piece of an elastic sheet material that has been repeatedly bent so that:

the lower flange ( 4 ′) consists of a lower wall ( 4 d ′), two side walls ( 4 b ′) and two upper walls ( 4 g ′) that are parallel to the lower wall ( 4 d ′), and

the lower wall ( 4 d ′) is formed by a central section of the sheet material,

the side and upper walls ( 4 b ′, 4 g ′) are formed by the sections of the sheet material adjoining the central section on its both sides,

the web ( 3 ′) consists of two sections of the sheet material adjoining on both sides the sections of the upper walls ( 4 g ′), with the sections forming the web ( 3 ′) being shorter than the sections forming the lower flange ( 4 ′), and

the parts of the upper flange ( 2 ′) being formed by the two opposite border sections of the sheet material.

2. The securing clip according to claim 1 , characterized in that the upper flange ( 2 ′) comprises four parts ( 2 a ′, 2 a ″, 2 b ′, 2 b ″), the first pair ( 2 a ′, 2 a ″) of said parts being located on one side of the web ( 3 ′) and the other pair ( 2 b ′, 2 b ″) of said parts being located on the other side thereof, wherein said two sections of the web ( 3 ′) are divided into two parts, adjoining on both sides the sections of the upper walls ( 4 g ′).

3. The securing clip according to claim 1 , characterized in that one of the upper walls ( 4 g ′) of the lower flange ( 4 ′) is provided with means for enhancing the blocking of the lips ( 5 ′) of the lower flange ( 4 ′) in the guiding groove ( 6 ).

4. The securing clip according to claim 3 , characterized in that the blocking enhancing means are constituted by free corners ( 8 ′) of the upper wall ( 4 g ′) that have been bent towards the upper flange.

5. The securing clip according to claim 1 , characterized in that the external edges extending along the web ( 3 ′) of all the parts of the upper flange ( 2 ′) are bent away from the lower flange ( 4 ′).

6. The securing clip according to claim 1 , characterized in that it is made of steel.

7. A system for installation of flooring elements, the system comprising at least one securing clip ( 1 ′) according to claim 1 and at least one supporting element ( 7 ) comprising a guiding groove ( 6 ) for engagement with the at least one securing clip ( 1 ′), the dimension of the lower flange ( 4 ′) of the securing clip ( 1 ′) measured across the web ( 3 ′) being smaller than the width of the opening ( 6 ′) of the guiding groove ( 6 ), and the dimension of the lower flange ( 4 ′) of the securing clip ( 1 ′) measured along the web ( 3 ′) being greater than the width of the opening ( 6 ′) of the guiding groove ( 6 ).

8. The system according to claim 7 , characterized in that the supporting element ( 7 ) is a joist comprising a longitudinal guiding groove ( 6 ) at its side adjoining the flooring elements, the opening ( 6 ′) of the guiding groove ( 6 ) being bordered on both sides by longitudinal blocking flanges ( 6 ″).

9. The system according to claim 8 , characterized in that the joist is a profiled element made of plastic material.